JPH04211972A - Recorder - Google Patents

Abstract

PURPOSE:To obtain a recorder capable of performing a sharp recording by improving the accuracy of a distance between a recording medium and a recording means. CONSTITUTION:In a recorder performing recording on a recording medium 1, the recorder is provided with a recording head 38 for making recording on the recording medium 1, a rotating body rotatably mounted, and a platen roller 8 capable of displacing toward the aforesaid recording head 38 and toward the peripheral surface of the aforesaid rotating body, and the aforesaid platen roller 8 is positioned to the aforesaid recording head 38.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a recording apparatus for recording images on a recording medium.

0002

[Prior Art] Recording devices such as printers, copying machines, and facsimiles print transferred images onto recording sheets such as paper or thin plastic plates by driving an energy generator in a recording head based on information. It is configured to record images consisting of dot patterns.

[0003]Hereinafter, an inkjet recording apparatus will be explained as an example of a recording apparatus.

[0004] The inkjet recording device used as this recording device has extremely low noise during recording.
High-speed recording is possible because high-density multi-discharge ports are easily formed. In addition, it has recently attracted attention because of its ease of color reproduction of color images.

Among these, the method of ejecting and flying ink droplets using thermal energy is capable of achieving the highest density of all recording methods because it is possible to form flow paths using thin film technology, and is therefore suitable for high-speed recording. ing.

An example of a recording head used in such an inkjet recording apparatus is a so-called full-line type recording head in which a plurality of ejection ports are formed over the entire recording width of recording paper.

Each of the plurality of ejection ports communicates with a common liquid chamber inside the recording head, and this common liquid chamber has a plurality of ink tanks (for example, Two ink supply tubes are connected, and during recording, ink is supplied from both ink supply tubes, and during recording head recovery operation, the ink tank, one ink supply tube, the recording head, the other ink supply tube, and again. The ink tank is configured to cause ink to flow in one direction in the order of the ink tanks.

[0008] However, with ink jet recording heads, there is a risk that ink ejection failure may occur due to ink evaporation or drying, ink leakage, dirt due to ink leakage, adhesion of dust, or the formation of bubbles in the ink supply path, resulting in a decrease in the quality of the recorded image. In order to prevent this ejection failure, it is necessary to perform a recovery operation of the print head, which is performed by emptyly ejecting ink from all the ejection ports of the print head during a printing operation or during non-printing, or by causing the aforementioned unidirectional flow of ink. In addition, it is necessary to seal the ejection ports while the print head is not in use, and for this purpose it is necessary to provide a capping means, and for this reason, the print head must be configured to be moved from its desired position during printing operation. .

[0009]

[Problems to be Solved by the Invention] On the other hand, as mentioned above, an inkjet recording device uses thermal energy to eject ink droplets from the ejection opening of the recording head, and makes the ink droplets adhere to the recording sheet for recording. , the distance from the ejection opening of the printhead to the recording paper in the ejection direction must be kept small and constant, and the distance between the recording position of the printhead and the conveyance path of the recording sheet must be stabilized with precision. There was a problem.

On the other hand, in the inkjet recording method described above, ink droplets are ejected from the ejection openings of the recording head, and the ink droplets are attached to the recording sheet to perform recording. Therefore, it is necessary to keep the distance from the ejection opening of the recording head to the recording paper passing surface small and constant in the ejection direction. Conventionally, a configuration is known in which a platen guide is brought into contact with a platen roller and a recording sheet recording line is brought immediately after the end of the platen guide. However, the recording paper is left on a curved sheet path, and if recording is performed after a certain amount of time has elapsed, the irregular shape of the sheet path will stick to the paper, resulting in paper transport and ejection after recording. This may cause trouble, or the paper may not curl after recording.
There were technical issues such as inconvenience in terms of appearance and organization.

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a recording apparatus that can improve the accuracy of the distance between the recording medium and the recording means and perform clear recording.

Another object of the present invention is to provide a recording apparatus that can improve the accuracy of the conveyance path of the recording medium and prevent troubles in conveyance of the recording medium.

Another object of the present invention is to provide an inkjet recording apparatus in which the distance between the ink ejection opening and the ink landing position on the recording sheet is kept small and stable, and the quality of the recorded image is kept good.

Another object of the present invention is to provide a recording apparatus that does not cause curling of the recording medium.

[0015]

[Means for Solving the Problems] A recording apparatus that records on a recording medium includes a recording head for recording on the recording medium, a rotating body that is rotatably provided, and a direction of the recording head and a circumference of the rotating body. A platen roller that can be displaced in a surface direction is provided, and the platen roller is positioned with respect to the recording head.

Furthermore, in an inkjet recording apparatus that records on a recording medium by ejecting ink onto the recording medium, the platen is movable between a recording position and a standby position, and in order to perform recording on the recording medium. It has an inkjet recording head that discharges ink and a flexible guide member, and the inkjet recording head is configured to press the flexible guide member against the platen at the recording position. shall be.

[0017]

[Operation] In the present invention, there are two parts: the recording head side and the rotating body.
Since the platen roller is positioned at a point, positioning accuracy is increased. Further, the first conveying force for the recording paper is obtained between the platen roller and the rotating body, and the second conveying force for the recording paper is obtained between the platen roller and the guide member on the recording head side.

[0018]

【Example】

(Example) Hereinafter, the present invention will be specifically explained based on Examples.

FIG. 1 is a central cross-sectional view of an embodiment of a facsimile machine that characteristically represents the present invention. FIG. 2 is a top plan view thereof, and FIG. 3 is a sectional view showing the open state. The facsimile machine of this embodiment is roughly divided into document transport system A,
Optical system B, power supply section C, electric circuit board D, recording paper transport system E
, a decal system F, a supply system G, and a recovery system H. Here, the document conveying system A and the optical system B constitute a document reading section that reads a document image. As a basic operation of a facsimile machine, when sending or copying,
When the original 2 is set, the original transport system A moves the original 2 to a row of rollers (rollers R1, R2, R3, R4) driven by a driving means (not shown) in order to read the original image of the original 2.
It is transported sequentially by Then, the document line information at the determined document reading line (main scanning line) position during transportation reaches the line CCD 100 by the condensing lens Le through the reflected optical path of the optical system B (lamp L1, mirrors M1 and M2), and is converted into an electrical signal. It is converted and the original information is read. During reception or copying, the recording paper conveyance system E sequentially conveys the recording paper 1 wound into a roll shape along the path shown in the figure by a drive means (not shown) by a row of rollers driven by a drive means (not shown). Ink is ejected from the ejection openings of the recording head 38 onto the recording paper recording line to perform recording. Ink is ejected from the ejection openings of the recording head 38 using thermal energy. This thermal energy is generated by an electrothermal transducer included in the recording head 38. Note that the power supply section C normally receives a general AC input, converts it into all necessary voltages and currents in the apparatus, and supplies the converted voltages and currents to each section. The electric circuit centered on the electric circuit board D controls the functional operation of each part of this device, centered on the microcomputer system, and also controls the connection and release of the transmission line and the input and output of image information signals. conduct. The supply system G supplies ink to the recording head, and the recovery system H performs cleaning and capping of the ejection opening surface necessary for the head.

As shown in FIG. 2, the roll recording paper 1 is located almost in the center of the apparatus, and on the left side there are the document conveyance system A,
An optical system B and a power supply section C are arranged side by side in the vertical direction. Further, on the right side thereof, an ink supply system G including a recording head 38, a recording head recovery system H, and an ink tank 86 is arranged in order from the top. Since the recording head 38, the recording head recovery system H, and the ink supply system G including the ink tank 86 are arranged in this order from the top, in this embodiment, even if the apparatus is tilted, the recording head 38 can be easily maintained. The ratio of pressure change from the ink tank 86 to the orifice surface is reduced (the pressure to each ejection port becomes uniform), and good recording is possible. This is because the distance between the orifice surface of the recording head and the ink tank can be increased even though the apparatus has been made smaller.

Each configuration and operation will be explained below.

First, the operation of conveying the recording paper will be explained step by step. A roll of recording paper 1 is loaded, and this recording paper 1 passes through a decurling system F for correcting curling, and is sandwiched between a driving conveyance roller 7 and a driven roller (platen roller) 8 that comes into contact with the conveyance roller 7. transported. Conveyance roller 7
is driven by a driving means (not shown), for example, a stepping motor is used as the driving source.

FIG. 4 is a perspective view showing the relationship of parts in the longitudinal direction around the driven roller 8 (platen roller). A first platen side plate 13a and a second platen side plate 13b, which are fixed to or integrally formed with the recording frame 19, pass through an opening 13c larger than the shaft diameter and support the driven roller 8 with play. . E-rings 29 and 30 are attached to both ends of the shaft portion of the driven roller 8 to prevent them from coming off. Furthermore, bearings 10a and 10b are disposed on both shaft portions, the coaxiality of the inner diameter and outer diameter being accurately defined, and the bearings 10a and 10b are fitted to the core of the driven roller 8 and are rotatable. On the other hand, the first platen side plate 13a and the second platen side plate 13b are
As shown in the figure, platen pressing shafts 12a and 1 are provided on the inner surface, respectively.
2b are fitted and slidably arranged. Then, due to the action of the springs 11a and 11b, the platen pressing shaft 12
One end of a, 12b is the bearing 10a of the driven roller 8,
It is configured to apply a contact pressing force to 10b.

Now, returning to FIG. 1, the recording head 38 is in the recording position, and at this time, the driven roller 8 has a pressing force that pushes the driven roller 8 against the conveying roller 7, and also against the recording head 38. By abutting the bearings 10a and 10b, they abut and are positioned in two directions. That is, as described above, the direction of the pressing force of the platen pressing shafts 12a, 12b on the driven roller 8 is the direction in which the driven roller 8 contacts the conveyance roller 7, and the direction in which the bearings 10a, 10b contact the recording head 38.
It is set in the direction in which it comes into contact with. At the same time, the flexible thin plate recording guide 14 guides the recording head 38 so that it rotates about the head shaft 36 and comes to the recording position.

In this way, the sheet path is aligned with the recording line position, and the recording head 38 discharges ink at the recording line position from the discharge opening during recording.

Next, the recording paper 1 is guided by the first curvature guide 15 and the first paper ejection guide 20, and the recording paper 1 is guided by the first paper ejection roller 2.
1 and the roller rows 17a to 17 that come into contact with the paper ejection roller 21.
g and the roller rows 18a to 18g and are guided and conveyed.

Note that the first paper ejection roller 21 receives driving force from the drive system of the same drive source as the transport roller 7, and the circumferential speed of the first paper ejection roller 21 is equal to the peripheral speed of the transport roller 7. It is set to be slightly faster.

FIG. 5 is a perspective view showing the relationship of parts in the longitudinal direction around the first paper ejection roller 21. As shown in FIG. Colo 17a~
17g and rollers 18a to 18g are the first curvature guide 15a
~15f are arranged alternately, each rotatably supported by a shaft 31 and a shaft 32, and both ends of the shaft puller are fixed with an E ring or the like. Further, the shaft 32 is regulated at both ends by a first paper discharge roller receiving side 9a and a second paper discharge roller receiving side 19b that are fixed or integrally formed with the recording frame 19, and in the horizontal direction, the shaft 32 is fitted with the diameter of the shaft 32. It is passed through a vertically-aligned hole to be regulated, and both sides are further prevented from getting wet with E-rings (not shown) or the like. In addition, the springs 16a to 16f shown only as representative 16a in the figure
A compressive force is generated between the recording chassis 19 and the first curvature guides 15a to 15f (see FIG. 1), and the rollers 17a to 17g and rollers 18a to 18g abut against the paper ejection roller 21 with a pressing force. As a result, when the recording paper 1 is pinched, a conveying force is generated. Then, the recording paper 1 passes between the two blades 22a and 22b of the cutter 22 that cuts the recording paper for each received page, is further guided by the upper paper discharge guide 23 and the rear paper discharge guide 24, and then is guided to the second paper discharge roller. 25 and the rollers 27a to 27g that come into contact with it
and guided and conveyed by rollers 28a to 28g. Further, the second paper ejection roller 25 receives a driving force from a drive system, and its circumferential speed is set to be slightly faster than the circumferential speed of the first paper ejection roller 21. Again, the first
Similar to the area around the paper discharge roller 21, rollers 27a to 27g and rollers 28a to 28g are arranged alternately with the second curvature guides 26a to 26f and are rotatably supported by shafts 33 and 34, respectively. The shaft 34 is prevented from coming off at both ends with an E-ring or the like, and the shaft 33 is fitted with the diameter of the shaft 33 in the horizontal direction of paper discharge roller receiving sides 19c and 19d, which are fixed to or integrally formed with the recording frame 19 at both ends. It is passed through the vertical hole and is regulated, and both ends are secured with E-rings, etc. The recording chassis 19 and the second curvature guides 26a to 26 are connected by the springs 35a to 35f.
A compressive force is generated between rollers 27a to 27 (see Fig. 1).
g and the rollers 28a to 28g contact the second paper discharge roller 25 with a pressing force, and when the recording paper 1 is nipped, a conveying force is generated. The recording paper that has been recorded in this way is ejected, and the paper is cut by a cutter page by page and sent to the ejection roller 3.
Further receiving the conveying force of 9, the tip is smoothly received and held by the stacker 40. As a result, the operator can take out the recording paper held in the stacker 40.

The recording paper conveyance system is constructed and operates as described above. Here, the state shown in FIG. 1 represents the time of recording,
When replacing the recording paper or having trouble transporting the recording paper, rotate the recording frame 1 with the hinge 19e of the recording frame 19 as the axis center.
9 can be opened and closed. That is, as shown in Figure 3,
It can be opened just at the recording paper conveyance path,
Each component is designed so that the upper side belongs to the recording frame 19 and the lower side belongs to the main body frame 63 side. FIG. 6 shows the assembled state of this recording frame 19 and its constituent parts.

As described above, in this embodiment, the recording head 38, the recording head recovery system H, and the ink supply system G are arranged in this order from the top. Then, the recording paper 1 on which recording has been performed by the recording head 38 is guided in the horizontal direction above the recording head 38, and then lowered and stored in the discharge stacker 40. The path for guiding the recording paper in the horizontal direction is in contact with the opening of the main body. Therefore, according to this embodiment, even if a paper jam occurs, it is easy to remove it, and even if a paper jam occurs, capping can be performed without damaging the head surface. Furthermore, even if ink leaks during capping, the recording paper will not be soiled.

Next, the driven roller 8 (platen roller 8)
The positioning will be explained below.

First, referring to FIG. 7, FIG. 7 shows the state of parts around the driven roller 8 when the main body of the apparatus is in a standby state. The recording guide 14 is arranged so as not to come into contact with the driven roller 8 when no external force is applied. Therefore, in the standby state, the recording paper 1
The angle of contact with the outer periphery of the driven roller 8 is smaller than in the printed state. At this time, the position of the driven roller 8 is such that the outer periphery of the driven roller 8 is pressed by the platen pressing shafts 12a, 12b and comes into contact with the conveyance roller 7, and the core metal of the driven roller 8 is provided on the platen side plates 13a, 13b. This is determined by contacting the through hole 13c which is 0.1 mm to several mm larger than the outer periphery of the core metal. The conveyance roller 7 and the driven roller 8 both have a core made of a rigid body such as iron, and a roller made of a flexible body such as rubber arranged around the outer periphery.

Next, referring to FIG. 8, FIG. 8 shows a state in which the recording head 38 is rotating clockwise about the head shaft 36 in order for the present apparatus to enter the recording state from the standby state. It is something. First, the head 3 is driven by the motor KM.
8 rotates as described above, the plurality of protrusions 38c provided on the recording surface of the head 38 come into contact with the tip of the recording guide 14, and the recording guide 14 begins to be elastically deformed. Here, the projections 38c provided on the recording surface of the head 38 become higher toward the corners. Therefore, recording guide 14
Then, the recording head 38 is elastically deformed and separated by the height of the protrusion (δ in the figure).

The reason why the projections 38c become higher toward the corners is to facilitate the removal of ink during a wiping operation of the recording surface of the head, which will be described later.

When the recording head 38 further rotates clockwise and moves to the recording state shown in FIG. 1, both ends of the recording surface of the recording head 38 touch the bearings 10a and 10b.
comes into contact with. This determines the distance between the recording surface of the recording head 38 and the platen roller (driven roller) 8. In this embodiment, the outer periphery of the bearings 10a and 10b is larger than the outer periphery of the driven roller 8, and the amount thereof is set to be a fraction of a millimeter smaller than the height δ of the projection of the recording head 38. There is. As a result, the guide 14 reliably contacts the outer periphery of the platen roller 8, and the recording paper can be conveyed. During recording, the conveyance roller 7 rotates clockwise, and its external force causes the platen roller 8 to rotate counterclockwise and move toward the recording head 38. Therefore, with the above configuration,
The platen roller 8 comes into contact with the guide 14 through the recording paper. Therefore, the springs 11a and 11b are not necessarily required, and the platen roller 8 can be brought into contact with its own weight alone.

Next, the structure of peripheral parts of the recording head 38 will be explained using the perspective view of FIG. The recording head 38 includes a head main body part 38f including a heat generating part, an electric component part, and a glass ink liquid chamber part, a filter front part 38d, a filter rear part 38e, and a head front plate 38c, which are arranged on the outside of the head main part, respectively. It is roughly structured. In addition, the front 38d of the filter and the back 38e of the filter have a front head ink connection part 38d1 and a rear head ink connection part 38e1. are sealed and connected. 38a is an imaginary chain double-dashed line in the figure that connects the straight lines in which the nozzles are lined up and the center lines of the nozzles, and a plurality of nozzles 38 are lined up so that an image can be formed over the entire width of the recording member in the main scanning direction. There is. Although it will be referred to as a nozzle 38a hereinafter, it actually has a hole several tens of microns in diameter, and the hole is connected to ink supply tubes 71 and 72. Here, the opposite ends of the ink supply tubes 71 and 72 are connected to a front supply pipe joint 84 and a rear supply pipe joint 85, which will be described later. Now, the surface on which the nozzle 38 is opened is denoted by 38b in the figure, and will be called the orifice surface. Here, the head front plate 38g is formed of metal or a molded member, and the space between the orifice surface 38b and the head front plate 38g is filled with silicone rubber or the like and is completely sealed. The filters 38d and 38e are for preventing dust in the ink from entering the nozzle portion. 37a and 37b are the front and rear parts of the head arm, and are made of engineered plastic, which is rigid and does not easily deform due to heat at high temperatures, or sintered metal, die-cast metal, etc., and are fixed to the inkjet head 38 with screws, etc., respectively. ing.

Head arm front 37a and head arm rear 3
7b is fixed to the head shaft 36 by screwing. Since the head shaft 36 and the inkjet head 38 are configured as described above, the head shaft 36 and the inkjet head 38 are fixedly mounted. The head shaft 36 is rotatably supported by a main body frame 56 via a bearing (not shown), and the head shaft 36 is connected to a drive system composed of gears, a belt KB, etc., and is further connected to a stepping motor KM. connected.

Next, the structure of the peripheral parts of the cap 41 is shown in FIG.
This will be explained using a perspective view of 0. Although the shape of the cap 41 will be described in detail later, the cap 41 is made of a flexible material such as silicone rubber that is resistant to mechanical creep and has a high permeability to gases such as water vapor. 42 is a cap keel made of a rigid material such as aluminum or stainless steel, and as shown in the cross-sectional view of FIG. 11, short shafts 46a, 46b, 46c, 46d, 4
6e is fixed to the cap keel 42 by screwing. The short shafts 46a to 46e are preferably made of a rust-resistant and rigid material such as stainless steel. In this embodiment, the short axes 46a to 46e
are screwed together, but they may also be joined by press-fitting, gluing, etc. Also, the cap keel 42 and the short shaft 46a~
e may be integrally formed by molding or the like.

Here, in forming the cap 41, first, as described above, the cap keel 42 and the short shafts 46a to 46 are formed.
e is combined, the combined cap keel 42 and short axes 46a to 46e are embedded in a mold with openings, and silicone rubber, which is the raw material for the cap 41, is injected or sandwiched, thereby forming the cap 41 into a cap keel 42.
It is made by baking and integrally molding. here,
It goes without saying that the shape of the mold described above matches the external shape of the cap 41. Now, 60 is a recovery frame made of rust-resistant and rigid material such as stainless steel, and the four sides are bent to increase the rigidity of the recovery frame (60
a to 60d). The recovery frame 60 includes short shaft bearings 61a and 61b that receive the short shafts 46a to 46e.
, 61c, 61d, and 61e are fastened with screws (not shown) or the like. Note that the frame 60 of the bearings 61a to 61e
The method of joining may be welding or adhesion. Further, as described later, the short shaft 46a has an elongated hole, and the short shaft 46b
・C and d are fitted into so-called stupid holes, and the short shaft 46e is fitted for positioning. In other words, the outer diameters of each of the short shafts 46a to 46e are the same, and the inner diameter portion 61e1 of the short shaft bearing 61e and the outer diameter of the short shaft 46e are made to have diameters that fit together exactly, so that they cannot slide against the stainless steel short shaft 46e. The short shaft bearings 61a to 61e are made of a polyacetal resin with good dynamic properties.

In contrast to the short shaft bearing 61e, the short shaft bearing 61a
As shown in FIG. 11, an elongated hole 61a1 is formed in the longitudinal direction of the cap 41. The elongated hole portion 61a1 is formed so that its widthwise dimension fits with the short shaft 46a. Short shaft bearings 61b, 61c, 61d
The diameters of the holes 61b1, 61c1, and 61d1 are 0.1 mm to 1 m based on the outer shape of the short axes 46b to 46d.
It is made large in the range of m. Next, the short shafts 46a to 46
As shown in the figure, the compression springs 47a to 47e are attached to the outside of the short shaft stop 56a from the back side of the recovery frame 60.
〜56e and tighten the screws.

As a result of being screwed, the compression springs 47a to 4
7e, the cap keel and the short shaft bearings 61a to 61e are sandwiched and compressed. The movement of the cap 41 at this time will be described in detail later.

Next, 50 and 52 are a first wiper and a second wiper, respectively, and are made of a flexible material such as rubber with good wear resistance. The straightness of the straight portions 50a and 52a is strictly controlled to ensure that there are no edges or debris. Further, the first wiper 50
The second wiper 52 is fixed to the wiper stay 49 and to the second wiper stay 51 with screws (not shown) or the like. 1st
Both the wiper stay 49 and the second wiper stay 51 are made of rust-resistant and rigid metal such as stainless steel.

Further, the first wiper stay 49 and the second wiper stay 51 are attached to the recovery frame 6 as shown in FIG.
It is fixed to 0 with a screw. At this time, the protrusion 41a of the cap 41 and the wiper tip 50a, which will be described later,
52a is arranged so that the parallelism is accurate. Furthermore, the protrusion 41a, wiper tips 50a and 52a,
Also referred to later as a two-dot chain line α in FIG. 10, which is an imaginary line connecting the mounting surface of the wiper stays 49 and 51 of the recovery frame 60 and the center lines of the respective boss portions 59a1 and 59b1 of the front cam gear 59a and rear cam gear 59b. It is arranged so that the parallelism is precisely accurate. Further, as shown in FIG. 10, the height of the tip 52a of the second wiper relative to the recovery frame 60 is higher than the height of the tip 50a of the first wiper relative to the recovery frame 60. For this configuration, the heights of the above-mentioned flexible parts such as rubber of the first wiper 50 and the second wiper 52 may be changed, or the heights of the flexible body parts of the first wiper stay 49 and the second wiper stay 51 may be changed. You can change the height of the part. Next, 54 is a recovery frame bearing, and the recovery frame shaft 55 shown in FIG.
a so that it fits in the lateral direction. Although the recovery frame shaft 55 is fixed to the main body frame 63 here, the recovery frame shaft 55 may be rotatably supported by the main body frame 63. The material of the recovery frame bearing 54 is made of polyacetal resin with good sliding performance, and is fixed to the recovery frame 60 with screws. At this time, the fixed position of the recovery frame bearing 54 to the recovery frame 60 is such that the center of the elongated hole 54a in the depth direction is located at the center of the recovery frame 60 in the direction of the arrow β in FIG. Also here, the short shaft bearing 6
The center of the hole 61c1 of 1c is also indicated by the arrow β as shown in the figure.
direction, and is located at the center of the recovery frame 60. Further, the center of the hole 61b1 of the short shaft bearing 61b and the center of the hole 61d1 of the short shaft bearing 61d are located symmetrically in the direction of arrow β with 61c1 as the center. Furthermore, the short shaft bearing 61
The center of the elongated hole portion 61a1 in the direction of arrow β and the short shaft bearing 6
The center of the hole 61e1 of 1e is similarly located symmetrically in the direction of the arrow β with the hole 61c1 as the center. Now, hole 61
Distance between center of a1 and center of hole 61b1, hole 61b1
It is desirable that the four distances described above be equal: the distance between the center of the hole 61c1 and the center of the hole 61c1, the distance between the center of the hole 61c1 and the center of the hole 61d1, and the distance between the center of the hole 61d1 and the center of the hole 61e1. . Next, reference numeral 62 denotes a recovery frame shaft, which is disposed across both side plates of the main body frame 63. The recovery frame shaft 62 is rotatably supported around a bearing (not shown) disposed on the main body frame 63. Furthermore, idler gears 57a and 57b are fixed to this recovery frame shaft 62 so as to be located inside both main body frames 63 and outside of a cap guide front 48a and a cap guide rear 48b, which will be described later. Idler gear 57
The means for fixing a and 57b to the recovery frame shaft 62 is a parallel pin or a spring pin (both not shown), due to the integration of the recovery frame shaft 62 into the main body frame 63.
It is fixed with an E-type retaining ring. Further, as shown in the figure, an outer idler gear 58 is fixed to the recovery frame shaft 62 with the main body frame 63 in between, using a D cut portion formed at the end of the recovery frame shaft 62 to prevent rotation. Next, cam gears 59a and 59b are arranged to mesh with the idler gears 57a and 57b. The cam gears 59a and 59b are located outside the cap guides 48a and 48b and inside the main body frame 63, and the cam gear shaft 7 is fixed to the main body frame 63.
It is rotatably supported around 0a and 70b. Here, the gears 57a, 57b, 59a, 59b are modules,
The number of teeth is equal. Furthermore, the gear 58 and the gears 57a and 57
b, 59a, and 59b have the same number of teeth. Here, the gear 58 is connected to a stepping motor CM.

The structure of the number of teeth mentioned above is as follows:
When the cam gears 59a and 59b rotate once, the rotation angle and rotational position of the gears are detected by a microswitch slit type sensor (not shown) or the like by connecting gears that rotate exactly once. Cam gear 5
Boss portion 59a1 of 9a and boss portion 59b of cam gear 59b
This is to detect the position of position 1. Therefore, if a gear, timing pulley, etc. that rotates once in synchronization with one rotation of the cam gears 59a and 59b is present in the drive system, if the position of the gear, timing pulley, etc. is detected, the present embodiment can be used. Similarly, the gears 57a, 57b, 59a, and 59b do not have to have the same number of teeth. Cap guides 48a and 48b are also fixed to the recovery frame 60. The cap guides 48a and 48b are made of polyacetal resin with good sliding performance. The cap guides 48a and 48b have grooves 48a that fit in the boss portions 59a1 and 59b1 of the cam gears 59a and 59b in the transverse direction.
1, 48b1 are formed, and they fit together as shown in FIG. Here, the boss portion 59a1 and the boss portion 59b
1 are arranged at positions exactly opposite to each other.

Since the configuration is as described above, when the outer idler gear 58 rotates, the image shown in FIG. 11 (center sectional view)
The recovery frame 60 performs a swinging motion about the recovery frame axis 55 in the direction indicated by the arrow x shown in FIG.

Now, the parts around the recovery frame 60 are constructed as described above. Therefore, in FIG. 10, the recovery frame 60 is defined by the two-dot chain line α and the recovery frame axis 5.
5. Here 2
The dotted chain line α and the head axis 36 are arranged so that their parallelism is accurate. Although the recovery frame 60 is positioned by the plane formed by the two-dot chain line α and the recovery frame axis 55, it is not fixed by the component,
In FIG. 10, the recovery frame 60 has a degree of freedom in the direction of the arrow θ and in the direction of the curved arrow γ.

Next, the recovery frame 60 of the first cap guide 48a and the second cap guide 48b is moved in the direction of arrow θ in the figure.
The arrangement position will be explained in detail using FIG. 12. Both the first cap guide 48a and the second cap guide 48b are formed with U-shaped hole-shaped portions 48a1 and 48b1, and the intervals between the U-shaped holes are formed with high precision. Said U-shaped hole 48a
The spacing of 1.48b1 is indicated by an arrow in the figure. Then, the first cap guide 48a and the first cap guide 48a and the second A two-cap guide 48b is disposed on the recovery frame 60.

Next, the first head arm 37a and the second head arm 37b have circular protrusions, 37a1 part, 37
b1 portions are formed at the front head arm 37a and the rear head arm 37b, respectively. The circular protrusions 37a1 and 37b1 are arranged such that the ink ejection opening of the nozzle portion 38a is located at the center of the circular protrusions. Further, the diameters of the circular protrusions 37a1 and 37b1 are formed to fit exactly into the interval between the U-shaped hole-shaped portions of the cap guides 48a and 48b.

Now, since the configuration is as described above, the capping recovery frame 60 is connected to the cam gear 59a.
・If it rises due to the rotation of 59b, the cap guide 4
The circular protrusions 37a1 and 37b1 of the head arms 37a and 37b are inserted into the U-shaped holes 48a1 and 48b1 of 8a and 48b.
are guided respectively, and the nozzle part 38a and the cap 41
The protrusions 41a are exactly opposite to each other.

In this embodiment, the recovery frame 60 is moved in the θ direction and the γ direction (
Fig. 10). Therefore, in this embodiment, the U-shaped hole portions 48a1 and 48b1 and the protrusion portions 37a1 and
Even if there is a slight positional shift when 37b1 is fitted, the projections 37a1 and 37b1 will fit into the U-shaped holes 48a1 and 4.
As long as the recovery frame 60 contacts the slope 48c of the frame 8b1, the recovery frame 60 can be displaced in the horizontal direction while being guided by the slope 48c and the holes 48a1 and 48b1, and the two can be reliably fitted together.

Furthermore, positioning of the cap 41 and the head front plate 38c, which will be described later, is also necessarily performed. Furthermore, even if the recovery frame 60 approaches the nozzle orifice surface 38b with an inclination, the protrusion 41
a and the nozzle portion 38a approach each other while maintaining their opposing positional relationship.

Next, the cap 41, the cap keel 42,
The shapes and operations of the valve 43, valve cover 44, and waste ink tube 45 will be explained using FIGS. 11 to 16.

FIG. 11 is a diagram showing the state immediately after the head 38 and the cap 41 are in contact, FIG. 12 is a diagram showing the state where the head 38 and the cap 41 are separated, and FIG. 13 is a diagram showing the state where the cap 41 is separated.
FIG. 14 is a diagram showing a state in which the head is moving in the direction of the head 38.
15 shows a state in which the protrusion 41a presses and seals the nozzle 38a and the spring 47 is elastically deformed, FIG. 15 shows a state in which the cap 41 is separated from the head 38, and FIG. 16 shows a standby state. FIG. Also, in each figure, (
A) is a side view viewed from the side plate direction, (B) is a cross-sectional view in the transverse direction, and (C) is a cross-sectional view in the longitudinal direction. However, in Figure 12 (A
) is a similar side view, and (B) is a longitudinal sectional view.

First, in FIG. 11, FIGS. 11(A), 11(B), and 11(C) are diagrams showing the state at the moment when the cap 41 contacts the head front plate 38C. The cap 41 has not yet been deformed. In FIG. 11(B), the cross-sectional shape of the cap 41 will be described in detail. cap 4
The side portions of No. 1 are formed with an inclination such that the distance between the side portions increases as the distance increases toward the upper side in FIG. 11(B). The slanted side surface section is connected to the curved section a in the figure, and the thickness of the section a is thinner than the other parts as shown in the figure. In this embodiment, part a has a curved shape that changes smoothly, but it may have an edge shape that changes suddenly. In the case of edge shape,
The wall thickness of the edge portion is reduced. Similarly, Figure 1
1(C), the lateral cross-sectional shape of the cap 41 is also formed to open outward as it goes upward in the drawing.

The cross-sectional shape of the cap 41 in the short direction is as follows:
The thickness of the cap 41 that contacts the head front plate 38c is made thicker than the portion of the cap 41 that contacts the head front plate 38c in the longitudinal cross-section of the cap 41 shown in FIG. 11(B). This is because in the present embodiment described above, the cap 41 is accurately positioned with respect to the head 38 in the transverse direction, but the longitudinal direction is not accurately positioned. If the positioning is performed accurately with respect to the head 38, it is not necessary to configure it as in this embodiment. Now, returning to FIG. 11(C), the shape of the side surface of the cap 41 is connected to a curved portion b that smoothly changes as in FIG. 11(B), and b
The wall thickness of the part is thinner. Furthermore, in this example,
In both the shape of the cap 41 shown in FIG. 11(B) and FIG. 11(C), the thickness changes smoothly such that it becomes thinner as it goes downward in the figure. Now, returning to FIG. 11(B), in the sealed space of the cap 41, a protrusion 41a integrally molded with the cap 41 is provided. The protrusion 41a is located at the nozzle part 3.
R-shaped portion 41 of protrusion 41a is located opposite to 8a.
It is located at a position where the vertex of c is located. The length of the protrusion 41a in the longitudinal direction is longer at both ends than the entire length of the nozzle portion 38a. Next, a through hole 41b is formed in the cap 41, and the through hole 41b in the cap 41 also communicates with a through hole 41b formed in the cap keel 42. A valve 43 is provided in the through hole 41b. Even if no pressure is applied to the valve 43, since the valve 43 is formed of a flexible member, a sealed state from the atmosphere can be created. Here valve 43
The reason why the cap keel 42 can function as a valve is because the cap keel 42 is made of a rigid member as described above, and the flatness of the contact surface of the cap keel 42 with the valve 43 is made with high accuracy. It's for a reason.

Next, a valve cover 44 is placed around the valve 43, and a cap keel 42 and a valve cover 44 are placed around the valve 43.
4 are sealed and fixed. Furthermore, the valve cover 44
is connected to the waste ink tube 45 in a sealed manner. The cap 41 is changed from the state shown in FIG. 11 to the state shown in FIG.
As the cam gears 59a and 59b in A) rotate in the direction of arrow d in the figure, they begin to approach the recording head 38. As the cam gears 59a and 59b move, the side surface of the cap 41 begins to move in the direction of arrow C in FIGS. 11(B) and 11(C) while maintaining contact with the head front plate 38c. This movement is because the side surface of the cap 41 is formed to open as it goes upward. Now, the reason why the cap 41 moves in the direction of arrow c is not only due to the shape of the cap 41 as described above, but also because the pressure in the sealed space of the cap 41 increases due to the volume reduction in the sealed space of the cap 41. It's also because we start. As the pressure within the sealed space of the cap 41 increases, the valve 43 begins to open, and the atmosphere within the sealed space and waste ink (not shown) begin to flow from the valve 43 toward the waste ink tube 45. FIG. 13 shows the state when the cam gears 59a and 59b are further rotated in the direction of arrow d.

In FIG. 13(B), the side surface of the cap 41 comes into contact with the rising portion at the edge of the head front plate 38c, and movement in the direction of arrow c in FIG. 11 is stopped. As described above, the side surface portion of the cap 41 in the width direction shown in FIG. 13(C) is formed thicker than the side surface portion in the longitudinal direction. Movement will stop. In this embodiment, as described above, the wall thickness of the side surface of the cap 41 in FIG. 13(C) is changed; If it is formed as thin as the thickness, it will come into contact with the rising part of the edge of the front plate 38c, and the same function as this embodiment can be realized.

Now, in FIG. 13(B), the cap 4
A portion of the side surface portion 1 shown in the rear portion a that abuts the edge of the head front plate 38c receives bending stress and deforms as shown in the figure. The thick portion of the side surface of the cap 41, including the surface that comes into contact with the head front plate 38c, receives a buckling load, and the portion a is bent and deformed, so that it does not buckle. The above content is shown in Figure 13 (C
), the side surface portion of the cap 41 will undergo similar deformation, including the deformation of portion b. Here, in FIG. 13(C), the compression spring 47a has not yet begun to deform.

In FIG. 13(B), the pressure in the sealed space created by the cap 41 becomes higher than the pressure in the state shown in FIG. The atmosphere and the aforementioned waste ink are sent to the waste ink tube 45.

When the cam gears 59a and 59b further rotate in the direction of arrow d, the cap 41 further moves toward the head 3.
8, the protrusion 41a of the cap 40 comes into contact with the nozzle 38a. At this point, the cap 40 is hardly deformed except for the protrusion 41a. When the cam gears 59a and 59b further rotate in the direction of the arrow d, the compression spring 47a begins to deform, and the reaction force of the compression spring 47a becomes the pressing force of the protrusion 41a of the cap 41 against the nozzle portion 38a. It works. Note that from FIG. 11 to FIG. 16, only the compression spring 47a is shown in the figures, but the other compression springs 47b, 47c, 4
7d and 47e also move in the same way as the compression spring 47a. Here, the time during which the protrusion 41a presses the nozzle 38a is approximately several seconds required for circulating the ink liquid within the head 38. At this time, the pump operates to circulate the ink liquid.

In the above-mentioned embodiment, an example was shown in which the cap 41 and the protrusion 41a were integrally molded from an elastic member such as rubber, but the present embodiment is not limited to this, and the cap 41 and the protrusion 41a are separately molded. It can also be the body. Also cap 41
Even if the entire body does not have elasticity, for example, at least the portion that contacts the head ejection port surface 38c has elasticity in a suitable length, and the upper portion thereof may be rigid.

Now, as mentioned above, the compression spring 47a deforms and the boss portions 59a1 and 59b of the cam gears 59a and 59b
FIG. 14 shows the state where 1 is located at the uppermost position. In FIG. 14, there is almost no change in the volume of the closed space formed by the cap 41, the valve 43 is only in a state of sealing off the atmosphere, and the pressure within the closed space and the pressure of the atmosphere are in equilibrium. From the state shown in FIG. 14, the cam gears 59a, 59b are
The state of each part when rotated in this direction is shown below. Here, the rotation direction of the cam gears 59a and 59b is determined by the boss portion 59a1.
・It is necessary to move from the top to the bottom or from the bottom to the top in the diagram of 59b1, and for example, even if the cam gears 59a and 59b rotate in the opposite direction to the direction of the arrow e in FIG. The actions described occur similarly. In FIG. 15, the volume of the sealed space of the cap 41 increases again, and the pressure inside the sealed space becomes negative relative to the atmosphere, and the valve 43 becomes closed as shown in the figure. Therefore, in order to compensate for the volume reduction of the sealed space of the cap 41, the nozzle portion 3 of the recording head 38 is
The ink is discharged from the nozzle 8a, and the ink in the nozzle portion 38a is refreshed.

Finally, FIG. 16 shows the state of peripheral parts including the cap 41 in a standby state in which the apparatus shown in this embodiment is not performing operations such as recording and recovery. In this figure, the cam gear has stopped rotating. In FIG. 16(B), the pressure within the sealed space of the cap 41 and the atmospheric pressure are in equilibrium. At this time, no external force is acting on the valve 43 to open it or close it, but due to the shape of the valve 43,
The water vapor in the closed space of the cap 41 is no longer released to the atmosphere.

FIG. 17 shows another embodiment of the guide member according to the present invention. Each of the first cap guide 48a and the second cap guide 48b has a V-shaped hole portion 48a2.
・48b2 is formed, and the intervals between the V-shaped holes are formed with high precision.

Next, the first head arm 37a and the second head arm 37b have angular protrusions 37a3 and 37b, respectively.
3 is formed, and the width of the angular protrusion is formed to fit exactly into the interval between the V-shaped holes.

When the projection of the cap 41 comes into contact with the nozzle portion 38a of the head, the first head arm 37
a2 angular protrusion 37b3 and second head arm 37b2
Each tip of the angular protrusion 37b3 is a V-shaped hole-shaped portion 4.
8a2 and 48b2.

With this configuration, the V-shaped hole 48
Even if there is a slight positional deviation when a2 and 48b2 and the angular projections 37a3 and 37b3 are fitted together, the recovery frame 60 can be displaced in the directions of arrows θ and γ in FIG. 48a2 and 37a3 and 48b
2 and 37b3 can be reliably fitted.

FIG. 18 shows another embodiment of the guide member according to the present invention. Each of the first head arm 37a4 and the second head arm 37b4 has a U-shaped hole forming portion 37a5.
・37b5 is formed, and the intervals between the U-shaped holes are formed with high precision.

Next, each of the first cap guide 48a and the second cap guide 48b has a circular protrusion 48a3.
48b3 is formed, and the width of the circular protrusion is formed to fit exactly into the interval between the U-shaped holes.

When the projection of the cap 41 comes into contact with the nozzle portion 38a of the head, the first head arm 3
U-shaped hole forming part 37a5 of 7a4 and second head arm 37
The tips of the U-shaped hole forming portion 37b5 of b4 are arranged so as to fit into the circular protrusions 48a3 and 48b3, respectively.

With this configuration, the circular projections 48a3 and 48b3 and the U-shaped hole forming portions 37a5 and 37
Even if there is a slight misalignment when b5 is fitted,
Since the recovery frame 60 is movable in the directions of arrows θ and γ in FIG. 10, it is possible to reliably fit 48a3 and 37a5 and 48b3 and 37b5.

Next, the ink supply and recovery system will be described. This unit consists of an ink tank, an ink tube, a pump, etc., and has the functions of holding ink, supplying ink normally to the recording head, and preventing clogging of nozzles when air bubbles form in the conduit. If it occurs, it has a function to remove it.

FIG. 19 is a conceptual diagram illustrating an embodiment of the present invention. In this FIG. 19, 38 is a recording head, 7
6 is an ink pump, 86 is an ink cartridge having an ink tank and a waste ink absorber, and 87 is an air opening called a breather.

Initial supply of ink to the recording head 38 is performed as follows. That is, the ink pump 76 is operated with the cap 41 in close contact with the recording head (as shown in FIG. The ink is circulated in the direction shown by arrow E from
Fill the inside of the pipes, including the inside of the recording head, with ink. At this time, some ink also flows out of the cap 41, but this is returned to the ink cartridge 86 through the waste ink tube 45, and collected in the built-in waste ink absorber 96.

After the initial supply of ink is completed, the recording head 3
8 is ready for ejection, but since the ink pump used in this example is a type of pump that does not block the flow path when stopped, ink is supplied to both the front and rear of the head ink connection portion 38d and 38e during ejection. It is carried out from

When the amount of ink decreases due to ejection, the same amount of air as the amount of decrease must enter the tank, and the breather 87 serves as an air opening for this purpose. This breather 87 has check valves arranged inside it in both directions that open with a very small pressure difference, and will open even if a slight negative or positive pressure occurs in the tank, essentially functioning as an air hole. , to suppress the intrusion and evaporation of dust.

Reference numeral 92 denotes an ink-out detection section, and 94 inside the tank
This is the part that detects when there is no ink, and the detection is performed as follows. In other words, since the float chamber 90 is exposed to the atmosphere through the breather 87 that is common to the ink tank 94,
The internal liquid level and the floating float 89 show the same water level 91a as the ink liquid level 91 in the ink tank 94. Therefore, a sensor 88 that detects the interruption of the light beam is placed at an appropriate location in the lower part of the float chamber 90, and the ink liquid level 91 is
In other words, as the water level 91a of the detection unit decreases, the float 89 lowers and blocks the light beam of the sensor 88, thereby detecting the absence of ink.

Next, the recovery operation will be described. The recovery operation is an operation to remove bubbles and clogging that prevent normal ejection, and is performed in conjunction with the recovery system according to the recovery sequence described later, but the recovery operation is exactly the same as the initial supply of ink. In other words, the ink pump 76 is operated with the cap 41 in close contact with the recording head 38 (this state is shown in FIG. 14), the ink is circulated along the path shown by arrow A, and air bubbles are collected into the ink tank. and release it outward from the breather. In addition, clogging in the nozzle can be removed by releasing the contact between the protrusion 41a in the cap 41 and the nozzle 38a and driving the pump. At this time, pressurized ink also flows into the float chamber 90, but the ink does not enter the breather 87 because the float 89 rises and comes into close contact with the upper surface of the float chamber 90, blocking the flow path to the breather 87. do not have.

FIG. 20 is a perspective view of a supply and recovery system embodying the configuration of this embodiment. In FIG. 20, reference numeral 73 denotes a base of this unit, and also serves as a base on which an ink cartridge 86, which will be described later, is mounted. Reference numeral 74 denotes a member called a joint plate formed by fixing various flow path connecting portions, and this joint plate 74 includes a cartridge guide 78 for positioning the ink cartridge 86 and a guide for guiding ink when the ink cartridge 86 is installed. Cartridge joints 79a, 79b, 79c are used to connect pipes to open the air to the atmosphere. A waste ink joint 81 that leads to the ink absorber 96, an air joint 80 that connects a breather that vents to the atmosphere with an air tube 83, and a first joint that sends ink to the recording head.
First and second supply pipe joints 84 and 85 connecting the second ink supply tubes 71 and 72, and an ink pump 76 driven by a pump motor 77 are coupled. The ink joint 79 connected to the ink tank 94 housed in the ink cartridge 86 in this way connects the first ink supply section 79a, the second ink supply section 79b, and the atmosphere communication connection section 79c, which supply ink during recording. It has a configuration in which three functions are centrally provided and connected to the first ink supply port 95a, the second ink supply port 95b, and the atmosphere communication port 95c, which have a corresponding relationship with the ink tank 94 side. There is.

[0080] Therefore, since the atmosphere communication part to the ink tank is achieved by a joint, the ink made of a hard resin material can store a large amount of ink without using an ink tank format using an ink bag. I was able to form a tank.

Furthermore, the first ink supply port 95a and the second ink supply port 95b are connected to the first ink supply section 79c and the second ink supply section 79b, and ink is supplied from both supply areas during recording. During the initial filling and recovery operations of ink, a path is configured in which the ink flows from the ink tank, passes through the print head via a pump, and returns to the ink tank.

In other words, as mentioned above, the tank, the supply path, and the atmosphere communication part are directly connected, so even though the ink tank is made of hard resin, it does not have the function of a sub-tank, which was conventionally necessary for stable supply. It is now possible to omit. In this example, these members are individually fixed to the joint plate 74, but they may be integrally formed with the joint plate.

Further, a flow path plate 75 provided with a flow path groove 75a serving as an ink flow path is coupled to the joint plate 74, and most of the piping and connections of the ink flow path are configured in this portion.

That is, by fixing the joint portion 79 attached to the joint plate 74 connected to the ink tank 94, the ink path 75a does not need to move in that portion. This makes it possible to do so.

[0085] Therefore, by simply joining the flow path plate in which the flow path is formed to the back surface of the joint plate 79, a part of the ink path from the ink tank 94 to the recording head can be constructed.

On the other hand, as will be described later, the ink tank 94 disposed within the ink cartridge 86 is housed with a degree of freedom within the housings 93a and 93b that constitute the cartridge 86.

By storing the ink tank side with a degree of freedom, when the cartridge is installed in the fixed joint part 79, the engagement state of the mounting part can be easily ensured, and the cartridge can be easily and securely engaged. Reliability of attachment can be ensured.

In this way, the joint plate 74 and the channel plate 75
By forming a flow path by joining the ink tank to the ink tank, the ink path from the ink tank could be constructed without complicated rotation.

As shown in FIG. 21, the ink cartridge 86 includes an ink tank 94 made of resin with good liquid contact, and a water-absorbing material such as felt or porous material that has excellent ink absorption and retention properties. The waste ink absorber 96 made of
It is stored in 3b. Supply of ink and release to the atmosphere are performed by connecting the cartridge 79 on the joint plate 74 side via a joint portion 95. In this way, the entire ink cartridge 86 is configured to be removable from the base 73 on the apparatus side.

FIGS. 22(a) and 22(b) show the structure of this part in more detail. FIG. 22(a) is a side cross-section of the ink cartridge showing a main part of the ink cartridge main body 86, and FIG. 22(b) is a side cross section of the ink cartridge showing a part of the joint portion 95 when connected to the cartridge joint portion of the supply system. It is shown separately. To prevent ink from leaking when the ink cartridge 86 is removed, the joint part 9 is
5 has a joint opening 95a by a spring 98.
There is a built-in metal ball 99 that is pressed by the ink cartridge, and when the ink cartridge is removed from the device, the metal ball 99 comes into close contact with the seal rubber 101 and the opening 95 of the joint part is closed.
It has a structure that seals a.

Further, as shown in FIGS. 22(a) and 22(b) and FIG. 23 showing a front cross section, the ink tank 94 has an inclined bottom surface. That is, the inclined surface 94 is such that the joint portion 95 collects the flow of ink from the rear.
a and an inclined surface 94b that collects the flow of ink from the side of the ink tank 94 to the joint portion 95. Ink is sent to the supply system through a lead-out pipe 100 that is bent to open at its deepest point. By forming the inclined surfaces 94a and 94b at the bottom of the ink tank in this way, all the ink can be collected near the outlet tube 100, making it possible to use the ink without wasting it. Furthermore, even if the device is installed with a slight inclination, ink can be taken out without wasting it. With this configuration,
The aforementioned waste ink absorber 96 is housed in the area within the resulting housing in a substantially U-shape. Note that 93c is a bottom support of the ink tank 94, and supports the rear portion of the inclined surface 94a.

Furthermore, in this embodiment, three flow paths, that is, two ink supply paths and one atmosphere release path, need to be connected at the joint portion 95, but it is necessary to ensure that this portion is connected. In order to achieve the connection, as shown in FIG. 23, the ink tank 94 is held within the housings 93a, 93b with a gap 97 so that it can move freely by an appropriate amount.

In particular, when connecting a plurality of joints, not only the degree of freedom in the vertical and horizontal directions but also the degree of freedom in the rotational direction is required. In this example, in order to obtain a degree of freedom in the rotational direction with respect to the central axis of the joint portion 95, a gap 97 (for example, about 1.0 mm in this example) is provided at both ends of the ink tank 94, and a gap 97a is provided above the gap 97a. (in this embodiment, for example, approximately 1.0 to 2.0 mm), and a flexible felt-like waste ink absorber 96 is used to hold the ink tank 9.
4, it is held rotatable by a certain amount. Note that 93d is a dowel that supports the front bottom surface of the ink tank 94. This makes it possible to perform a reliable connection without positional deviation. In addition, in this embodiment, the ink tank side joints 95a, 95b, 95c are approximately 0.5 m from the main body joints 79a, 79b, 79c.
Since the ink tank 94 is located at a height of approximately 0.
It will rise about 5mm and be connected to the main body joint. In addition, in this case, in order to prevent the ink tank 94 from moving due to vibrations and shocks and causing noise or damaging the casing, and to make effective use of space, a waste ink absorber 96 is installed as shown in FIG. The innermost part of the ink tank 94 is inserted into this part, and the remaining outer periphery is used to hold the waste ink absorber 94, so that the flexibility of the waste ink absorber 96 absorbs the shock and still maintains the degree of freedom. The structure is such that it can be done. In this way, the waste ink absorber is fitted into the deepest part of the ink tank 94 and held at the outer periphery,
Moreover, since it is made of a soft material such as felt, the ink tank can be protected from external impact and the ink tank can be prevented from wobbling as described above.

Next, the recovery sequence will be described. This operation is necessary for the recovery system and the supply system to work together to remove air bubbles and clogging in the flow path and maintain normal recording. Figure 25 is a flowchart of this operation, and Figure 26
(A) to (D) show schematic diagrams of the operation. Figure 26(A)
In (D), for ease of explanation, the unit consisting of the recording head 38, head arm, etc. will be referred to as the head unit 65, and the unit consisting of the cap 41, wipers 50, 52, recovery frame 60, etc. will be referred to as the cap unit 6.
Set it to 4. The head unit 65 is rotatable around the head shaft 36, and the cap unit 64 is rotatable around the recovery frame shaft 55. The recovery operation procedure will be explained below.

In the normal standby state, as described above, the relationship between the recording head 38 and the cap 41 is maintained in a sealed state as shown in FIG. 16, where the periphery of the cap is slightly bent. In the recovery operation, first, as shown in FIG. 13, the cam gears 59a and 59b rotate to press the protrusion 41a inside the cap 41 against the nozzle 38a at the tip of the recording head (the position of the cap unit at this time is the pressing position). call) (S22-1). Next, in this state, the ink pump 76 is operated to circulate the ink in the supply path (S22
-2) Remove bubbles from the pipeline. The protrusion 41a is connected to the nozzle 3.
The reason why the ink is pressed against the ink pump 8a is to prevent part of the ink from being circulated due to the pressure of the ink pump and flowing out from the nozzle, resulting in wasted waste ink.

Next, the cap unit 64 is lowered as shown by the arrow F in FIG. 26(A) (this state is called the retracted position) (S22-3), and the head unit 65 is further lowered as shown in FIG. 26(B). The middle arrow G and the cap unit 64 are shown in Figure 26.
(B) It rotates as indicated by the middle arrow H and reaches the wiping start position (S22-4). After this, the head unit 65 is
As shown in 6(C), the wipers 50 and 52 installed in the cap unit 64 rotate in the direction of arrow I in the figure to wipe off ink droplets, dust, etc. from the ejection orifice forming surface 38b of the recording head. (S22-5). Figure 26(C)
The middle arrow I indicates that the ejection port forming surface 38b of the recording head passes through the first wiper, but in this embodiment, since there are two wipers, the second wiper When the removal is completed, the cap unit 64 moves back to the retracted position as indicated by arrow J in FIG. 26(D), and the head unit 65 returns to its original position (S22-
7), the cap unit 64 finally rises to return to the normal standby state as shown in FIG. 1 (S22-8), and the recovery operation ends.

Cleaning in this embodiment will be further explained. As described above, the print head used in this embodiment is a so-called full line type in which ejection ports are formed over the entire print width of the print medium. However, when the ejection port forming surface becomes extremely long in this way, sufficient cleaning cannot be achieved by cleaning the ejection port surface once using one blade. This is due to the length
This is due to the fact that it is difficult to make the pressing force against the discharge port surface of the blade uniform over the entire width.

Therefore, in this example, the blades 50, 52
The reliability of cleaning is ensured by sequentially cleaning the discharge port surface using two blades.

Particularly during cleaning, it is important that the two blades independently contact the ejection orifice forming surface of the recording head to perform cleaning, thereby obtaining a so-called double-spraying effect. By sequentially arranging two blades in this way, the cleaning time is shorter than when cleaning is performed twice with one blade. Further, in this embodiment, the blade 50 that first contacts the recording head and the blade 52 that contacts the recording head subsequently have different sizes. This is because the length is set so that the tip of the blade comes into contact with the ejection port surface during the movement path of the print head in order for the print head to rotate around the head shaft 36. It is. Therefore, by driving the cap unit along with the rotating operation of the recording head, cleaning can be performed even if the lengths of the blades 50 and 52 are the same or have a length relationship opposite to that of this embodiment. I can.

[0100] Furthermore, by making the lengths of the plurality of blades that contact the rotating head 38 different, the length l of the blade tip that contacts the discharge port surface 38c of the head and/or the length l of the blade tip that contacts the discharge port surface 38c of the head can be changed. Contact angle θ0 of the contacting blades
(Fig. 27). Therefore, it is possible to change the force and contact area of each blade against the ejection port surface 38c, and it is possible to control the scattering of ink and foreign matter adhering to the ejection port surface 38c to the surroundings when scraping them off.

[0101] Furthermore, by increasing the contact amount of the blades and/or the contact angle θ0 of the blades contacting the discharge port surface 38c in the order in which they contact the head discharge port surface 38c, it is possible to scrape off more deposits first. The blade can be brought into light contact with the discharge port surface 38c, and the blade after scraping off the remaining deposits can be brought into sufficient contact with the discharge port surface 38c. Therefore, the deposits on the discharge port surface 38c can be reliably removed while preventing the deposits from scattering around the discharge port surface 38c.

Furthermore, while the first blade is wiping the discharge port surface 38c, the remaining blades act as a wall (FIG. 26(C)), and the deposits scraped off by the first blade are spread around the recovery device. This prevents the scattering from staining the recording paper and causing electrical shorts on the electronic circuit board.

[0103] For cleaning with a blade, it is not necessary to use two blades as described above, and more than two blades may be used. Alternatively, although the same material is used for both blades 50 and 52 in this embodiment, the same material or different materials with different characteristics may be used to enhance the cleaning effect.

Next, FIG. 28 shows the sequence at the start of printing.

The start of recording is performed as follows. First, in step S24-1, a print start signal is input to the print head which is in a standby state where the ejection port formation surface of the print head is merely covered by a cap as shown in FIG. Then, as shown in step S24-2,
The recording head and the cap are separated from each other as shown in FIG. 12, that is, the cap unit is retracted to the retracted position.

Next, while maintaining the state shown in FIG. 12, several to hundreds of preliminary ejections are performed from all the nozzles of the recording head, as shown in step S24-3.

[0107] As a result, the ejection state of the recording head can be made uniform among all the nozzles.

After the preliminary ejection is completed, the cap unit and head unit are moved and the process proceeds to step S24.
As shown in -4, the wiping operation start state shown in FIG. 26(A) is configured. Then step S24-5
As shown in FIG. 26, a series of wiping operations are performed as shown in FIGS. 26(B) to 26(D), and step S24-6
The recording head unit is further moved to a recording position as shown in FIG. 1, and that state is maintained. Thereafter, recording signals are sequentially input to achieve desired recording.

Next, the recovery operation performed by circulating ink will be described in more detail. This embodiment has an air bubble sensor 103 (for example, a transmission type sensor, etc.) shown in FIG. 19, and is capable of detecting air bubbles existing in the supply tube. Therefore, two types of recovery operations are possible: automatic recovery that is performed at predetermined intervals, and temporary recovery that is performed when bubble sensor 103 accidentally detects bubbles. The latter can be realized by having the bubble sensor 103, which makes it possible to reduce the accidental non-discharge that has occurred up to now and improve the reliability of the device. In particular, considering the safety of removing air bubbles, regardless of the amount of air bubbles, their location, etc., a considerable amount of extra circulation time or number of cycles is required to ensure that all air bubbles are removed. It was set. However, in this embodiment, bubble sensors 103a and 103a are installed on both the upstream and downstream sides of the ink flow direction during circulation with respect to the print head.
3b is provided. Therefore, when no bubbles are detected by both bubble sensors, the recovery operation is immediately stopped. In particular, if the signal from the bubble sensor 103b installed on the downstream side in the ink flow direction during circulation detects the removal (absence) of bubbles, after some time has elapsed (until the bubbles are discharged from the position of the sensor to the tank). time),
Since the ink pump is stopped, there is no need to take extra circulation time as in the conventional method, and as a result, the recovery sequence can be completed in a short time. Conversely, since recovery is stopped after bubble removal is detected, the reliability of bubble removal is increased. As a result, it is possible to reduce the amount of ink that was previously consumed by recovery, and it is also possible to avoid running out of ink when receiving FAXs and non-receiving conditions during the recovery operation.

FIG. 29 shows a block diagram of a recording section in an embodiment of the present invention.

101 is a microcomputer (CPU
), and controls the operation of the device by a program stored in the ROM 112 and data stored in the RAM 113.

Reference numeral 102 denotes an inkjet type print head, which receives data line by line from the CPU and then performs printing in response to a control (strobe) signal from the CPU.

Reference numerals 103, 104, and 105 are drivers for each pulse motor, which will be described later, and supply an appropriate current to drive the motors in response to a step command from the CPU.

Reference numerals 106, 107 and 108 are a motor for transporting the recording paper (W motor), a motor for moving the head (K motor), and a motor for moving the cap unit (C motor), respectively.

109 is a head position detection sensor; 11
0 is a sensor for detecting the cap position, and detects the position by turning on/off a micro switch, for example.

[0116] 103 is a bubble sensor.

Reference numeral 115 is an ink pump motor (P motor), which is a DC motor, and rotates when turned on. Reference numeral 114 is a driver (transistor circuit) that supplies a current to turn on the P motor according to a signal from the CPU.

Next, the operation at the time of recording will be explained with reference to the flowchart of FIG.

[0119] When the recording operation is started, first, the W motor is driven by the required number of steps to move the recording paper to a predetermined position (S26-2). Next, one line of black data is sent to the head 38 (S26-3
).

Next, move the cap to the retracted position (S2
6-4). Note that the C motor may be driven by a predetermined number of steps, or may continue to be driven until the sensor 110 detects that the cap 41 has moved to the retracted position (hereinafter referred to as head, The same applies to the movement of the cap).

Next, so-called dry ejection is performed by sending a predetermined number of strobe signals to the head 38 (S26-5).

Thereafter, the head 38 is moved to the recording position while performing a wiping operation. That is, the head 38 and the wiper (cap unit 64) are moved to the wiping start position, and (S26-6, S26-7) the head 38 is moved to the wiping start position.
The wiping is completed by advancing to the recording position as it is (S26-8).

[0123] After that, the cap 41 is returned to the retracted position (S26-9).

[0124] In the recording operation, data is sent to the head 38 line by line, a strobe signal is sent, one line is recorded (S26-10, S26-11), and the W motor is driven for one line. This is done by repeating feeding the recording paper (S26-12) until the end of the page.

[0125] After the recording of the last line is completed (S
26-13) and returns the head 38 to the standby state (S26
-14), return the cap 41 to the capping position (
S26-15, S26-16). Thereafter, the W motor is driven to eject the recording paper (S26-17), thereby ending the recording operation.

Next, the recovery operation will be explained with reference to FIG. When the device is in a standby state, the CPU checks the timer, t1, and air bubble sensor within the CPU at regular timing. t1 is a predetermined time T1 (for example, 2
4 hours), the recovery operation is started (S2
7-2).

[0127] Furthermore, even if t1 is not equal to T1, if the bubble sensor 103 is ON (bubbles present),
A recovery operation is started (27-3).

The recovery operation is performed as follows.

First, the C motor is driven to push the cap 41 and move it to a certain position.

Next, a P motor ON signal is output to rotate the P motor (S27-6).

After that, the output of the bubble sensor 103 is detected, and when the sensor output turns OFF, the counter t2 in the CPU starts counting (S27-7, S27
-8), when t2 reaches a predetermined value T2 (S27-9), t2 is cleared (S27-10).
Turn off the P motor (S27-11).

After that, the wiping operation begins.

First, the cap 41 is moved to the retracted position (S27-12). Next, after moving the head 38 to the wiping start position, the cap 41 is moved to the wiping position (S27-13, S27-14), and wiping is performed by moving the head 38 to the wiping end position (printing position). S27-15). After the cap 41 is returned to the retracted position (S27-16) and the head 38 is returned to the standby position (S27-17). It returns to the cap position and enters the standby state.

[0134] This completes the recovery operation.

[0135] In particular, the present invention is an inkjet recording system that is equipped with a means (such as an electrothermal converter or a laser beam) for generating thermal energy as the energy used for ejecting ink. This provides excellent effects in recording heads and recording apparatuses that animate changes in the state of ink.

[0136] For its typical configuration and principle, see, for example, US Pat. No. 4,723,129 and US Pat.
Preferably, it is carried out using the basic principles disclosed in the '796 specification. This method can be applied to both the so-called on-demand type and continuous type, but
In particular, in the case of the on-demand type, the electrothermal transducer placed corresponding to the sheet holding the liquid (ink) or the liquid path is required to respond to the recorded information and rapidly exceed nucleate boiling. By applying at least one drive signal that causes a temperature increase, the electrothermal transducer generates thermal energy that causes film boiling on the thermally active surface of the recording head, resulting in a drop in liquid in one-to-one correspondence to this drive signal. This is effective because it can form air bubbles within the (ink). The growth and contraction of these bubbles causes the liquid (ink) to be ejected through the ejection opening.
Form at least one drop. It is more preferable to use this drive signal in a pulse form, since the growth and contraction of bubbles can be carried out immediately and appropriately, so that ejection of liquid (ink) with particularly excellent responsiveness can be achieved. This pulse-shaped drive signal is described in U.S. Pat. No. 4,463,359 and U.S. Pat.
262 is suitable. Further, if the conditions described in US Pat. No. 4,313,124 concerning the temperature increase rate of the heat acting surface are adopted, even more excellent recording can be achieved.

[0137] In addition to the configuration of the recording head that combines ejection ports, liquid paths, and electrothermal converters (straight liquid flow path or right-angled liquid flow path) as disclosed in the above-mentioned specifications, The present invention also includes configurations using US Pat. No. 4,558,333 and US Pat. No. 4,459,600, which disclose configurations in which the heat acting portion is disposed in a bending region. In addition, for multiple electrothermal converters,
Japanese Patent Laid-Open No. 123670 of 1982 discloses a configuration in which a common slit is used as a discharge part of an electrothermal converter, and Japanese Patent Laid-Open No. 123670 discloses a configuration in which an opening for absorbing pressure waves of thermal energy corresponds to a discharge part. The present invention is also effective as a configuration based on 1959 No. 138461.

In particular, the present invention can be effectively applied to a full-line type recording head having a length corresponding to the width of the maximum recording medium on which the recording head can record. Such a recording head may have either a configuration in which the length is satisfied by a combination of multiple recording heads as disclosed in the above-mentioned specification, or a configuration as a single recording head formed integrally. However, the present invention can more effectively exhibit the above-mentioned effects.

[0139] In addition, a replaceable chip-type recording head that is attached to the apparatus main body enables electrical connection with the apparatus main body and ink supply from the apparatus main body, or a print head that is integrated into the print head itself. The present invention is also effective when a cartridge type recording head is used.

Further, it is preferable to add recovery means, preliminary auxiliary means, etc. for the recording head, which are provided as a configuration of the recording apparatus of the present invention, because the effects of the present invention can be further stabilized. Specifically, these include capping means, wiping means, pressurizing or suction means, preheating means for the recording head using an electrothermal transducer or a separate heating element, or a combination thereof. It is also effective to perform a preliminary ejection mode in which ejection is performed separately from printing in order to perform stable printing.

Furthermore, the recording mode of the recording apparatus is not limited to a recording mode for only mainstream colors such as black, but may also include a recording head that is configured integrally or a combination of multiple colors, or multiple colors of different colors or The present invention is also extremely effective for devices equipped with at least one of the following: , full color by color mixing.

[0142] In the embodiments of the present invention described above, explanations are made using liquid ink, but the present invention can be applied to ink that is solid at room temperature or ink that is in a soft state at room temperature. Can be used. In the above-mentioned inkjet devices, the temperature of the ink itself is generally adjusted within the range of 30°C to 70°C to keep the viscosity of the ink within a stable ejection range. It is sufficient if the ink is liquid. In addition, the temperature rise caused by thermal energy can be actively prevented by using the energy to change the state of the ink from a solid state to a liquid state, or an ink that solidifies when left standing is used to prevent evaporation of the ink. In any case, the ink may be liquefied by applying thermal energy in accordance with the recording signal and ejected as liquid ink, or the ink may already begin to solidify by the time it reaches the recording medium. The present invention is also applicable to the use of ink that is liquefied for the first time. In such a case, the ink is disclosed in JP-A-54-56847 or JP-A-60.
It may also be in a form where it is held as a liquid or solid in a porous sheet recess or through hole and faces an electrothermal converter, as described in Japanese Patent Publication No. -71260. In the present invention, the most effective method for each of the above-mentioned inks is to implement the above-mentioned film boiling method.

In addition, the inkjet recording apparatus according to the present invention may be used as an image output terminal for information processing equipment such as a computer, or as a reader, in addition to the facsimile machine having the transmitting and receiving functions shown in the embodiments. It may also take the form of a copying device or the like in combination with the above.

In this embodiment, a recording head having supply pipes at both ends and performing a recovery operation by circulation is used.
It goes without saying that the present invention may be applied to a type of recording head that has one supply pipe and recovers by suction from the front surface of the nozzle. It is also possible to reduce costs by forming the bubble sensor integrally with the structure of the head.

(Other Embodiments) Although the present invention has been explained using the above embodiments, for example, instead of using a spring and a platen pressing shaft as a means for biasing the driven roller, a plate spring or other elastic body may be used. Even if it is used, the idea of the present invention can be realized. In addition, regarding the structure in which the driven roller and the recording head are in contact with each other, it is also possible to do this by contacting a part of the recording head instead of over the entire width, or by providing another contact member on the recording head. By means of bringing the contact member into contact with the driven roller, etc.
It goes without saying that the present invention includes implementation means that are not related to the idea of the present invention.

[0146]

As explained above, according to the present invention, since the platen roller is positioned at two points: the recording head side and the rotating body, the positioning accuracy is improved. Further, the first conveying force for the recording paper is obtained between the platen roller and the rotating body, and the second conveying force for the recording paper is obtained between the platen roller and the guide member on the recording head side. Therefore, the first conveying force acts as a buffering force and the second conveying force does not affect load fluctuations, so that recording performance is improved. That is, according to the present invention, it is possible to simultaneously and easily position the recording line of the recording head and determine the contact line between the platen roller and the conveyance roller, thereby keeping the distance between the recording head and the platen roller small and constant. We can provide a recording device that can be determined by

Furthermore, since the distance between the recording head and the platen roller can be determined to be small and constant, it is possible to provide an inkjet recording apparatus that can form stable and good recorded images.

Further, according to the present invention, there is provided an inkjet recording apparatus that can perform high-quality recording without causing curling of the recording medium, and can convey the recording medium smoothly. I can do it.

As described in detail above, according to the present invention, it is possible to provide a recording apparatus that can perform clear recording.

[Brief explanation of the drawing]

FIG. 1 is a side sectional view of an axis device to which an embodiment of the present invention is applied.

FIG. 2 is a top plan view thereof.

FIG. 3 is a side sectional view showing the released state.

FIG. 4 is a perspective view of the vicinity of the platen roller.

FIG. 5 is a perspective view of a paper ejection roller.

FIG. 6 is a perspective view of a recording frame.

[Figure 7] Side view of the vicinity of the recording head

[Figure 8] Side view near the recording head

FIG. 9 is a perspective view of the recording head.

FIG. 10 is a perspective view of the vicinity of the cap.

FIG. 11 is a diagram showing a state immediately after the head and the cap come into contact.

FIG. 12 is a diagram showing a state in which the head and the cap are separated from each other.

FIG. 13 is a diagram showing a state in which the cap is moving toward the head.

FIG. 14 is a diagram showing a state in which the protrusion presses and seals the nozzle and the spring is elastically deformed.

FIG. 15 is a diagram showing a state in which the cap is separated from the head.

FIG. 16 is a diagram showing a standby state.

FIG. 17 is a diagram showing another embodiment of the guide member according to the present invention.

FIG. 18 is a diagram showing still another embodiment of the guide member according to the present invention.

FIG. 19 is a schematic diagram schematically showing a configuration example of an ink supply path of an inkjet recording apparatus according to the present invention.

FIG. 20 is a perspective view showing an example of the configuration of an ink supply means of an inkjet recording apparatus according to the present invention.

FIG. 21 is an exploded perspective view showing an example of the configuration of an ink cartridge installed in an inkjet recording apparatus according to the present invention.

FIG. 22 is a partially cutaway sectional view showing a side surface of an example of the configuration of an ink cartridge.

FIG. 23 is a partially cutaway sectional view showing the front of one configuration example of an ink cartridge.

FIG. 24 is a cross-sectional view showing a top portion of an example of the configuration of an ink cartridge.

FIG. 25 is a flowchart showing an example of a recovery sequence applicable to the inkjet recording apparatus according to the present invention.

FIG. 26 is a schematic side view showing the recovery operation in order.

FIG. 27 is a schematic diagram showing the contact amount and contact angle of the tip of the blade in contact with the discharge port surface.

FIG. 28 is a flowchart showing an example of a sequence from a standby state to a recording state.

FIG. 29 is a block diagram of a recording section in an embodiment according to the present invention.

FIG. 30 is a flowchart showing operations during recording in an embodiment of the present invention.

FIG. 31 is a flowchart showing a recovery operation in an embodiment of the present invention.

[Explanation of symbols]

1 Recording paper 2 Manuscript 7 Conveyance roller 14 Recording guide 22 Cutter 38 Recording head 41 Cap 50 Wiper 52 Wiper 60 recovery frame 86 Ink cartridge

Claims (13)

[Claims] 1. A recording apparatus for recording on a recording medium, comprising: a recording head for recording on the recording medium; a rotating body rotatably provided; and displacement in the direction of the recording head and in the direction of the circumferential surface of the rotating body. with a possible platen roller;
A recording apparatus characterized in that the platen roller is positioned with respect to the recording head. 2. The recording apparatus according to claim 1, further comprising a pressing means for pressing the platen roller in the direction of the recording head and in the direction of the circumferential surface of the rotating body. 3. The recording apparatus according to claim 2, wherein the pressing means presses a bearing of the platen roller. 4. The recording apparatus according to claim 1, further comprising a guide plate between the platen roller and the recording head. 5. The rotating body is a drive roller, the platen roller is a driven roller, and the driven roller receives a force in the direction of the recording head due to rotation during recording of the drive. The recording device according to claim 1. 6. The recording apparatus according to claim 1, wherein the recording head is an inkjet recording head, and is a full-line type in which ejection ports are formed over the entire width of a recording area of a recording medium. . 7. The recording head is an inkjet recording head that ejects ink using thermal energy, and includes an electrothermal converter for generating the thermal energy. The recording device according to claim 1. 8. The recording apparatus according to claim 1, wherein the recording head is an inkjet recording head and is a facsimile machine having an original reading section. 9. A recording apparatus that records on a recording medium by discharging ink onto the recording medium, the platen is movable between a recording position and a standby position, and the ink is disposed on the recording medium in order to perform recording on the recording medium. and a flexible guide member, the inkjet recording head being configured to press the flexible guide member against the platen at the recording position. recording device. 10. The recording apparatus according to claim 9, wherein the inkjet recording head is configured to displace the platen when pressing the flexible guide member against the platen. 11. The inkjet recording head comprises:
10. The recording apparatus according to claim 9, wherein the recording apparatus is a full-line type in which ejection ports are provided over the entire width of a recording area of the recording medium. 12. The inkjet recording head comprises:
10. The recording apparatus according to claim 9, which ejects ink using thermal energy, and further comprising an electrothermal converter for generating the thermal energy. 13. The recording device according to claim 9, wherein the inkjet recording device is a facsimile device having a document reading section.