JPH0299358A - Recorder - Google Patents

Abstract

PURPOSE:To perform a high-quality recording by a method wherein a recording part and recording medium feed paths as a feed part are disposed approximately in a straight line, and said line is set at an angle of 50 degrees or less from a horizontal line. CONSTITUTION:Since a recording head 51 and recording paper feed paths 9, 11 are disposed approximately in a straight line, recording paper is fed flat and stable. Therefore, a recording can be performed using a recording head with a large number of nozzles, a failure caused by the contact of recording paper with the recording head 51 is eliminated, and a recording paper feed accuracy is also improved. Moreover, if a drying heater (heat board) is used as the feed path 11, this linear arrangement enhances the contact properties of the feed path heater 11 and the recording paper to improve a drying efficiency. Since the straight line made of the recording head 51 and the recording paper feed paths 9, 11 is set at an angle of 50 deg. or less from a horizontal line, an ink jetted out of a nozzle of the recording head 51 is discharged downwards nearly straight toward the recording paper without an adverse influence of a gravity. Thus, irregularities in density caused by an ink drip in a solid recording part is eliminated and, in this manner, a recording quality is remarkably improved.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a recording device that records equal information on a sheet-like recording medium using a recording head, and is particularly suitable for a liquid jet recording device. .

[Prior Art] Generally, as shown in FIG. 13, the recording section of a liquid jet recording apparatus such as a conventional inkjet printer has a recording paper 21 wound around a large-diameter platen roller, and the recording paper 21 is wound around the platen roller 7. The ink ejecting surface (hereinafter referred to as the nozzle surface) of the recording head 51 may be arranged almost vertically at a position facing the attached recording paper 21, or alternatively, as shown in FIG. A substantially flat platen 33 is arranged at a downstream position away from the paper 7, and a recording head 51 is placed on the platen 33 at a position facing the recording paper 21.
The nozzle surface was arranged almost vertically.

It also has a heater that dries the ink on the recording paper.
In this case, as shown in FIG. 14, the hot plate heater 11 was arranged in a curved manner along the back surface of the flat platen 33 between the recording head 51 and the paper discharge roller 12.

[Problems to be Solved by the Invention] However, in the conventional apparatus as described above, the recording head 5
Since the nozzle surface of No. 1 is arranged almost vertically, the ink drips downward due to gravity in solid black recording areas, causing density unevenness. was a serious drawback.

In addition, since the platen 7.33 basically has a curved surface shape with a curvature, in the case of a recording head with a large number of nozzles, the distance between the recording head and the recording paper will differ between the upper, middle, and lower nozzles. However, there were drawbacks such as difficulty in making stable recordings.

Further, in the case of the configuration shown in FIG. 14, the recording paper conveying section after recording by the recording head is curved, so that there is the following drawback.

(2) In the case of a recording head with a large number of nozzles, lifting of the recording paper is likely to occur, and the recording head may come into contact with the recording paper and stain it.

■ Also, the spur 1 that guides the recording paper to the paper output tray 1010
3 is required, but when the recording paper hits the spur, the feeding accuracy of the recording paper deteriorates, and the recording quality of graphic printers etc. deteriorates.

■Furthermore, in order to bring the heater for ink drying into contact with the recording paper, the paper feeding speed of the paper ejection roller 12 must be increased considerably, which also affects the paper feeding accuracy and deteriorates the recording quality. This will lead to

Furthermore, in the configuration shown in FIG. 13, since the platen roller has a large diameter, it is difficult to make the apparatus compact and the operability is poor. Also, when recording on thick recording paper such as postcards and envelopes, high recording quality cannot be obtained unless a large-diameter platen roller is used. Since the amounts differ, this also limits the types of recording paper that can be used.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to eliminate the above-mentioned drawbacks, improve the recording quality by eliminating density unevenness caused by ink dripping in solid black recorded areas, and provide support for recording heads with a large number of nozzles. In addition, it eliminates the contact of the recording paper with the recording head, improves the accuracy of recording paper feeding, improves the drying efficiency of the heater, and furthermore, combines high functionality into a compact design that is easy to operate and thick recording paper. The objective is to provide a recording device that can also handle

[Means for Solving the Problems] In order to achieve the above object, the present invention includes a feeding section that feeds a sheet-like recording medium, a recording section that records information on the fed recording medium, and a recording section that feeds a sheet-like recording medium. A recording device having a conveyance unit that conveys a front and rear recording medium, wherein the recording medium conveyance path of the recording unit and the conveyance unit before and after the recording unit is arranged almost in a straight line, and the angle from the horizontal line of the straight line is 50 degrees. It is characterized by the following settings.

Furthermore, in order to achieve the above object, the present invention includes a feeding unit that feeds a sheet-like recording medium, a recording unit that records information on the fed recording medium, and a recording unit that conveys the recording medium after recording. a conveying section; a discharge roller that discharges the conveyed recording medium;
A recording device having a stacker section for storing an ejected recording medium, wherein the recording medium conveyance path of the recording section and the conveyance section is arranged almost in a straight line, and the recording medium conveyance path of the recording medium is arranged at a predetermined angle in the discharge direction of the discharge roller with respect to the straight line. The recording medium discharged by the discharge roller is arranged so as to hit the stacker section at a predetermined angle.

Furthermore, in order to achieve the above object, the present invention includes a feeding unit that feeds a sheet-like recording medium, a recording unit that records information on the fed recording medium, and an ejecting unit that ejects the recording medium after recording. A recording device having a feeding section at the front side of the device, a recording section tilted upward at approximately the center of the device, and a discharging section at the rear and upper part of the device. It is characterized by

[Function] In the present invention, since the recording medium conveyance path of the recording unit and the conveyance unit before and after the recording unit is arranged almost in a straight line, it is possible to correspond to a recording unit with a large number of nozzles, and the flow of the recording medium to the conveyance unit is also possible. The adhesion is improved, the recording medium no longer comes into contact with the recording section, the recording medium feeding accuracy is also improved, and if the conveyance section downstream of the recording section is used as a heater, the drying efficiency is improved, and the above-mentioned straight line Since the angle from the horizontal line is set to 50 degrees or less, the nozzles of the recording section face downward, eliminating density unevenness in the solid black recording section due to ink dripping.

Further, in the present invention, the recording medium conveyance path of the recording section and the conveyance section after recording is arranged almost in a straight line, and the discharge direction of the discharge roller is made at a predetermined angle with respect to this straight line, so that the recording medium is discharged by the discharge roller. Since the recording medium is made to hit the stacker section at a predetermined angle, the adhesion of the recording medium to the conveyance path is greatly improved and lifting of the recording medium is eliminated. Since the recording medium is reliably discharged in close contact with the recording section, there is no possibility that the recording medium will come into contact with the recording section, and if a heater is used as the conveyance path, the drying efficiency will be dramatically improved.

Furthermore, in the present invention, the feeding section is arranged at the front side of the device, the recording section is arranged at an upwardly sloping position approximately in the center of the device, and the ejection section is arranged at the rear upper part of the device, so that the device can be made compact. This also improves operability.

Further, since the relatively straight recording medium conveying path as described above is used, even thick recording media can be stably fed, so that high-quality recording can be performed on these recording media as well.

[Example] Hereinafter, an example of the present invention will be described in detail with reference to the drawings.

FIG. 1 shows the overall appearance of a recording device according to an embodiment of the present invention, and FIG. 2 shows its internal structure. Further, FIG. 3 shows details of the paper feeding section.

A. Paper feed section In Fig. 1, 61 is a pressure plate for loading and picking up recording paper (paper), and 61 in Fig. 2 is a pressure plate.
It is pressed upward by pressure plate spring 2. A paper width regulating plate 63 regulates the width of the paper stacked on the pressure plate 61. 65 is a separation (paper feeding) roller, which is fixed to a separation (paper feeding) roller shaft 651. The presser roller 652 is separated (
One paper feeding roller 65 is provided on each side of the paper feeding roller 65, and the paper feeding rollers 65 can freely rotate on the separation roller 1liilh651. A pressure plate pressing cam 6 is attached to the end of the separation roller shaft 651.
61 is fixed, and a separation roller gear 662 is rotatably loosely fitted opposite to this cam 661. A spring clutch 663 shown in FIG. 3 is provided between the pressure plate pressing cam 661 and the separation roller gear 662. ing.

When the lock song 664 provided around the spring clutch 663 is locked (non-rotated) by the lock claw 665, the spring clutch 663 is turned off (rotational force is not transmitted), and the lock song 664 is turned off (non-rotating).
65 comes off from the lock ring 664 and lock ring 66
4 becomes free (rotatable), it becomes on (rotational force transmission) state. Here, the lock claw 66
5 is in a position where it is thrown away by a protrusion 57 of the carriage 5, which will be described later.

Further, the pressure plate 61 is formed with a cam receiver portion 611 shown in FIG. 3 at a position corresponding to the pressure plate pressing cam 661 described above. As a result, the pressure plate B is moved by the pressure plate pressing cam 861.
1 is pressed down, the recording paper is separated from the separating roller 65 and the presser roller 652, but when the pressing cam 661 is released from the cam receiver 611, the pressure plate 61
is pushed up by the pressure plate spring 62, and the recording paper is pushed up by the separation roller 65.
It is designed to be pressed against. A separation pad 66 shown in FIG. 2 for frictionally separating only one sheet of recording paper is provided on the downstream side of the pressure plate 61 in the paper feeding direction, and this separation pad 66 is connected to the separation roller 65 and It is biased toward the presser roller 652. The press roller 652 has a perfect circular shape, but the separation roller 65 has a substantially semicircular arc shape, and the radius of the separation roller 65 is slightly larger than the radius of the press roller 652. Therefore, the separation pad 66 is pressed against the separation roller 65 in the arc range of the separation roller 65, and the presser roller 66 is in pressure contact with the separation roller 65 in the other range.
52.

Here, the diameter of the separation roller 65 is approximately 20 to 30 mm. As a result, as shown in FIG.
The angle (X) from the point of contact with the separation roller 65 of the separation pad 66 to the point of contact with the separation roller 65 of the separation pad 66 is greatly reduced. Due to this angle, the pressure plate 61 and separation roller 6
5 sets the angle at which the leading edge of the picked up recording paper enters the separation pad 6G, so that separation performance is not impaired even if the separation pad pressure is small. With a conventional normal separation roller diameter (about 40n++n diameter), a separation pad pressure of about 3008g was required, but by using a small diameter (diameter 20 to 301m) as in this example, the separation pad pressure can be reduced to 50g. The recording paper can be separated from the front and back without any problem.

Therefore, when the recording paper is conveyed by the paper feed roller 7 shown in FIG. 2, the back tension received from the presser roller 652 and the separation pad 66 is reduced, making it possible to feed the paper stably. Further, changes in the feed amount that occur when the trailing edge of the recording paper comes off from the presser roller 652 and the separation pad 66 can also be suppressed.

B, llI Feeding Section As shown in FIG. 2, a pinch roller 81 is attached opposite the paper feeding roller rough. The pinch roller 81 is rotatably supported at both ends on the pinch roller stay 8, which is biased downward by a pinch roller spring 82 shown in FIG.

The pinch roller stay 8 is rotatable around a stay fulcrum 83 on the upstream side.

Reference numeral 9 denotes a paper guide, which guides the recording paper fed from the aforementioned paper feed section to between the paper feed roller 7 and the pinch roller 81. Reference numeral 10 denotes a paper pressing plate, which is used to suppress the floating of the recording paper between the recording heads even after the recording paper is removed from the pinch roller 81.

The paper feed roller 7 is rotationally driven in the paper feed direction by a motor (not shown) or the like. At this time, the driving force is transmitted to the roller 7 by one step of deceleration using a transmission device such as a gear, and the rotation of the motor described above corresponds to one line (the length of the print head in the paper feeding direction). The reduction ratio is such that it sends the signal. As a result, eccentric components of the motor itself and the motor gear, which cause image deterioration such as so-called single overlapping white stripes that occur at the joints of recording due to conventional paper feeding, are canceled. Further, since the speed from the drive motor to the paper feed roller 7 is reduced by one step, the transmission can be performed using the minimum number of transmission elements, and no extra error components are included.

Further, reference numeral 11, not shown in FIGS. 1 and 2, is a heating plate having a heat generation source on the lower back surface, and is used to promote fixing of the recording paper after recording. The temperature of this hot plate 11 is 40°C to 90°C
There is no practical problem within this range.

12 is a paper discharge roller, and a paper discharge pinch roller 13 is provided opposite to this paper discharge roller 12. The paper ejecting pinch roller 13 has a spur-like shape and is designed to press down on the recording surface side in a dotted manner to prevent the recording surface from being rubbed or smudged due to incomplete fixation (during solid black printing). I have to. In addition, the feed speed of the paper ejection roller 12 is set several percent faster than the feed speed of the paper feed roller rough, which is the main feed, to apply tension to the recording paper, and to keep the recording paper in close contact with the heating plate 11 and at the recording section. I try to maintain the flatness of.

Furthermore, the hot plate 11 is located above the recording element of the recording head 51 so that heat from the hot plate 11 is not directly applied to the recording element portion of the recording head 51. A recording element forms an image by forming droplets of recording liquid using, for example, thermal energy. Further, an appropriate interval is provided between the paper guide 9 and the heating plate 11, and a paper width sensor 53 (described later), which is a reflective photosensor provided on the carriage 5, is provided.
By performing the detection (see FIG. 4(A)) at the interval, false detection caused by reflection from the plate is prevented.

C6 recording unit mounting section 15 in Figs. 1 and 2 is a guide shaft, and this shaft 1
5, the carriage 5 reciprocates in the left and right sub-scanning directions,
Drive is transmitted to the carriage 5 from a motor 16 via a belt 19. A pulley 171 is arranged on a tension plate 17 whose rotational fulcrum is coaxial with the motor 16, and a constant tension is applied to the belt 19 by a tension spring 172 via the tension plate 17 and the pulley 171.

Further, the carriage 5 is rotatable in the vertical direction around the guide shaft 15, and the side (free end side) opposite to the part where the carriage 5 slides on the guide shaft 15 due to its own weight is above the pinch roller stay 8. is being forced to. The pressing portion 54 is a slider that slides on the pinch roller stay 8, and the slider 54 is made of a resin with particularly high sliding properties such as Teflon. carriage 5
A protrusion 55 is provided below the print head 51. This protruding portion 55 protrudes further forward by approximately 0.3 to 0.5 mm from the front surface (nozzle portion) of the recording head 51, and normally does not come into contact with the paper press plate 1O.

FIGS. 4A to 4D show details of the carriage 5 and recording head 51 described above. In FIG. 4(8), a part of the recording head 51 in which recording elements are arranged in the vertical direction (main scanning direction) has a convex portion 51 as shown in FIG. 4(B).
1 is provided, and when this convex portion 511 fits into a hole on the carriage 5, the position of the recording head is determined.

Further, a fixed lever 52 is mounted on the carriage 5 so as to be rotatable about a fulcrum 525, as shown in FIG. 5(B).

The fixing lever 52 has elastic parts 521, 522, and 523 for fixing the recording head 51, as shown in FIGS. , the elastic portion 522 is attached to the recording head 5
1 to the front, and the elastic part 523 is shown in the same figure (C).
As shown in (D), the recording head 51 is pressed against a fixed base 5-a on the carriage 5, which stands perpendicular to the guide shaft 15. Here, since the perpendicularity of the fixed base 5-a greatly affects the vertical line deviation during recording, the elastic force of the elastic portion 523 reliably acts on the fixed base 5-a, and the perpendicularity due to the tilting of the recording head 51 is In order to prevent the elastic part 523 of the fixing lever 52 from collapsing, a projection part 526 is provided at a position facing the elastic part 523, as shown in FIG. and the protrusion 526.

In addition, 524 in FIG. 4(C) is the fixed lever hook part, and the hook protruding from the carriage 5 bites the part 56.
The fixed lever 52 is locked. Reference numeral 527 in FIG. 4CD is a pawl within the fixing lever 52, and the recording head 51 is provided with a stepped portion 511 that engages with the pawl 527. Therefore, when replacing the recording head 51, by rotating the fixing lever 52 upward and opening it,
The recording head 51 is pulled upward by the claw 527,
The recording head 51 can be easily removed, and when installing a replacement recording head, the recording head can be easily and reliably installed by operating the fixing lever 51 downward. These elastic parts 521, 522, 523 attached to the fixed lever 52 and the hook parts 524, 52
6,527 is made by integral molding.

Further, in FIG. 4(A), reference numeral 53 denotes a paper width sensor for detecting the width of paper and the presence or absence of paper when the carriage 5 moves left and right with respect to the paper conveyance surface. The paper width sensor 53 is installed so that its detection position is near the printing element located at the most downstream position in the paper feeding direction of the printing element section of the printing head 51.

In addition, near the lower side of the portion of the carriage 5 that slides on the guide l1b15, there is a protrusion 57 for knocking off the lock claw 665 of the paper feed section shown in FIGS. 1 and 3. The protruding portion 57 of the carriage 5 pushes out the lock claw 665 at a position outside the recording area. Reference numeral 58 in FIG. 4 (8) is a cap positioning bin, which is used to position the carriage 5 when not recording when it is retracted to the position of a recovery system 150 (described later) and when capping the recording element surface of the recording head 51 with a cap 158. used.

D1 recovery system department FIG. 5 shows details of the recovery system 150 of FIG.

In FIG. 5, 156 is a cap for covering the recording element surface of the recording head 51, and this cap 156
A positioning lever 157 that engages with the above-mentioned cap positioning pin 58 (see FIG. 4(A)) on the carriage 5 is attached to the positioning lever 157. Furthermore, the cap 156 has an almost inverted guide groove 1 formed on the top plate of the recovery system 150.
A bottle 161 is protruded to be guided along the line 51,
When the cap 156 moves forward due to the left and right movement of the guide groove 151 and the carriage 5, the cap 156 moves to the cap guide Id.
+ It is moved back by a return spring (compression spring) 163 attached to the (bin) 162.

Reference numeral 20 denotes a pump using a piston 201 with a one-way valve, which is communicated with a cap 156 through a suction tube 202, and the other side is connected to a drain tube 203 to a drain liquid collection section (not shown) inside the ink cartridge 18. It is communicated by. This pump 20 sucks ink from the cap 16 when the cap 156 caps the recording element surface of the recording head 51 by the back-and-forth movement of the piston 201, and discharges the ink once to the above-mentioned drainage liquid collection section of the ink cartridge 18. do.

The drive source for the pump 20 at this time is a paper feed motor (not shown), and the rotation of this motor is transmitted to the pump 20 by a recovery system gear 72 attached to the opposite end of the paper feed roller 7. The recovery system gear 72 is equipped with a one-way clutch, and driving force is transmitted from the shaft of the paper feed roller rough to the recovery system gear 72 in the reverse direction with respect to the paper feed direction. The rotational movement of the recovery system gear 72 is converted into a linear movement by a conversion cam 192 that is slidably engaged on the tip end portion of the piston 201, and the pump 20 is pumped.

E. Explanation of Operation Next, the overall operation of the embodiment of the present invention having the above-mentioned configuration will be explained.

When not recording, the carriage 5 is the cap 1 of the recovery system 150.
51i and is in a standby state.

When recording data is received from a host computer or a data transfer device (not shown), the carriage 5 moves to the right in FIG. 1 due to the drive of the motor 19, and the recovery system 150
The lock claw 665 located on the opposite side is released by the protrusion 57. When this lock claw 665 is released, the lock ring 664 becomes free, and the rotation of the separation roller gear 662 can be transmitted to the separation roller shaft 651 and the pressure plate pressing cam 661. When the motor starts moving, the separation roller 65 and the pressure plate pressing cam 661 can be transmitted to each other. The lowering cam 661 begins to rotate.

After starting to operate the motor, the carriage 5 moves to a position where it does not interfere with the return of the lock pawl 665 to the position where it can return due to its own elasticity (the position where it engages with the lock ring 664), and waits.

Further, when the pressure plate pressing cam 681 starts to rotate, the pressure plate 61 rises as shown in FIG. 6(B), and as shown in FIG. 6(D).
As shown in the figure, the recording paper is pressed against the separation roller 651.
The recording paper is fed to the separation pad 66. Here, the recording paper is squeezed by the separation roller 651 and the separation pad 66, and only one of the recording sheets is fed between the paper feed roller 7 and the pinch roller 81 within one revolution of the separation roller 651. After that, when the claw of the lock ring 664 reaches the position of the lock claw 665 again, the lock ring 664
5 is prevented from rotating, and the driving of the separation roller 65 is stopped.

Normally, the paper feeding operation ends with one rotation of the separation roller 65, but if the length to the paper feed roller 7 is longer than the circumference of the separation roller 65 due to the configuration of the device, the separation roller 651
will be rotated only multiple times. In that case, the carriage 5 will wait at the position where the lock claw 665 is thrown off until the final rotation begins.

During the paper feeding operation described above, the paper feed roller 7 and the separating roller 65
When the leading edge of the recording paper is detected by a paper END sensor (not shown) located between them, the recording paper is fed by a predetermined amount from that position, and the paper feed roller 7 is stopped, thereby allowing paper feeding and recording. Complete cueing of paper.

Thereafter, the carriage 5 returns to the recovery system 150 side.

At this time, the paper width sensor 53 provided on the carriage 5 detects the paper width of the recording paper and the presence or absence of the recording paper, and if the paper feeding operation is performed normally, the paper width of the recording paper,
In other words, the size of the recording paper is detected, and recording is forcibly not performed outside the recording paper. If no recording paper is detected, it is determined that there is a paper feeding failure, a paper feeding error occurs, and the machine stops.

In this embodiment, the lock claw 665 of the carriage 5 is
In order to ensure that the locking claw 665
is repeatedly skipped.

After paper feeding is completed in this way, the carriage 5 is moved back and forth in the width direction of the recording paper (sub-scanning direction), and while the paper feed roller 7 is feeding the recording paper by the amount of one line printed by the recording head 51, the recording paper is Record information in the form of text and images on paper.

At this time, the size of the gap between the recording head 51 and the surface of the recording paper is such that the recording head 51 slides on the pinch roller stay 8. It is determined by the height of the slider 54 of the carriage 5, and since the pinch roller 81 is attached to the pinch roller stay 8, when a recording paper enters between the paper feed roller 7 and the pinch roller 81, it will be pinched by the thickness of the recording paper. The roller stay 8 moves toward the carriage 5. Therefore, even if the thickness of the recording paper changes, the pinch roller stay
moves, the recording head 51 is moved via the carriage 5.
The recording head 51 also moves the same distance and in the same direction, thereby maintaining a constant gap between the recording head 51 and the surface of the recording paper.

The recording paper recorded by the recording head 51 passes through a heat plate 11 for recording and fixing, and is fed between a paper discharge roller 12 and a paper discharge pinch roller 13.

After the trailing edge of the recording paper leaves the space between the paper feed roller 7 and the pinch roller 81, the recording paper is fed by the paper ejection roller 12 and the paper ejection pinch roller 13, and after the last line is recorded, it is transferred to the paper ejection tray 1010. sent to.

At this time, especially when the recording paper is a thick paper such as an envelope or a postcard, when the recording paper comes off from between the paper feed roller 7 and the pinch roller 81, the carriage protrusion 55 is moved onto the paper presser plate lO which protrudes toward the carriage side due to the thickness of the paper. Since the recording head 51 slides, the front surface of the recording head 51 does not need to directly rub against the surface of the recording paper.

The operations described above complete the recording of one sheet of recording paper, and the recording of the next page and subsequent pages is repeated in the same manner as described above.

F. Features and Functions (Part 1) As shown in FIG. 2, the paper guide 9 is a flat platen, and the hot plate 11 is a recording paper conveyance system, and these are configured almost linearly. In this way, the recording section 51 and the recording paper conveying systems 9, 11 before and after the recording section are formed substantially in a straight line, and the angle formed by this straight line from the horizontal line is approximately 50 degrees or less, as will be described later.

The example in FIG. 7 is a case where the guide plate 9 and the hot plate 11 are on the same plane, and the example in FIG.
is moved downward by a distance t. Which configuration is best depends on the actual drying method, etc., but in general, when taking into account folds at the edges of the recording paper, as shown in Figure 8, a hot plate (ordinary guide plate is fine) ) 11 should be set back slightly from the guide plate 9.

The angle of the recording paper conveyance system from the horizontal line varies depending on the number of nozzles in the recording head 51, and according to experimental results, it is 48
~64 nozzles allow up to about 50 degrees, but 128
Since the amount of ink ejected in one scan increases when it comes to the size of a nozzle, it is better to set the angle to about 45 degrees or less. In the case of color recording, the amount of ink is naturally larger than that in monochrome recording, so it is better to reduce the angle. Further, when considering operability, the angle is preferably 30° or more.

As mentioned above, since the recording head 51 and the recording paper conveyance system 9.11 before and after the recording head are made almost straight, the conveyance of the recording paper is flat and stable, which makes it possible to record with a recording head with a large number of nozzles. In addition, there is no possibility of the recording paper coming into contact with the recording head 51 and causing problems, and the accuracy of recording paper feeding is improved. Furthermore, the conveyance system 11 is equipped with a drying heater (hot plate).
Even in this case, since it is linear, the adhesion between the conveyance system heater 11 and the recording paper is improved, and the drying efficiency is improved. Furthermore, since the angle between the straight line between the recording head 51 and the recording paper transport system 9.11 and the horizontal line is set to 50 degrees or less, the ink emitted from the nozzles of the recording head 51 is ejected almost straight down toward the recording paper. Since there is no negative influence due to gravity, density unevenness due to ink dripping in solid black recorded areas is eliminated, and the recording quality is dramatically improved.

In the description of the embodiments above, the flat platen 9 (paper guide) of the recording section and the guide member (heat plate) for conveyance after recording are used.
Although 11 is made a separate member, it goes without saying that it may be constructed integrally with the same member.

In addition, as a heater for drying the ink on the recording paper, I would like to show a heating plate 11 that heats the recording paper from below to accelerate the drying of the ink. It may also be dried.

Furthermore, instead of a guide plate such as the paper guide 9 or the hot plate 11, a conveyor belt 4 or the like may be used, as shown in FIG. 9, for example. In the case of such a belt 4, it is convenient to use an electrostatic adsorption belt or the like because the recording paper will not float.

Furthermore, although the direction of movement of the recording paper has been described as being from the bottom to the top, it is easily possible to move the recording paper from the top to the bottom by reversing the configuration.

G. Features and Functions (Part 2) Figure 10 shows the paper output tray 1 in the embodiment of the present invention shown in Figure 1.
010 and the positional relationship between the recording paper conveyance system in detail. As shown in this figure, the paper guide (flat platen) 9 and the heating plate (guide plate) 11 are arranged almost in a straight line, and the paper ejection direction of the paper ejection roller 12 and paper ejection pinch roller 13 is relative to the heating plate 11. The recording paper 21 is arranged to be ejected at a predetermined angle α°, and a paper ejection tray 1010 for storing the ejected recording paper is attached at a predetermined angle β° with respect to the paper ejection direction by the paper ejection roller 12. There is. In the case of this embodiment, α=15° and β=8° are set as an example.

First, as described above, in the recording section, there is a paper guide 9 which is a flat platen and a hot plate 11 which is a guide plate after recording.
Since it is flat, no stress is generated on the recording paper 21,
The recording paper 21 can be fed flat and stably.

Next, the paper ejection roller 12 and the paper ejection pinch roller 13 move the recording paper 21 onto the heating plate l! Since the recording paper 21 is discharged upward at a predetermined angle α relative to the paper discharge roller 12, the recording paper 21 located upstream of the paper discharge roller 12 is pressed against the hot plate 11, which is a guide plate. Further, the recording paper 21 is placed at a predetermined angle β to the paper discharge tray 1010.

After that, the paper is guided to the paper discharge tray 1010 and stored therein. Therefore, here as well, the recording paper 21 is curved upward and is ejected while its rear end is pressed against the hot plate 11.

Note that the paper output tray 1010 has a base 10 fixed to the main body side.
10d and a base 1010a k: a tray part 1010c that is rotatably provided around a pin f010b, and the tray part 1010c can be folded when not in use as shown by the broken line. This is a pocket for receiving dust to prevent dirt from falling into the recording section, and is particularly effective when folding the tray section 1010c.

As described above, in this embodiment, the recording section and the recording section rear conveyance section are configured almost linearly, and the paper ejection roller 12 is disposed downstream of the recording section rear conveyance section at a paper ejection angle α°. The paper output tray 10 is placed at an angle of β° relative to the paper output angle α°.
10, the recording paper 21 is ejected while being pressed against the guide plate 11 of the post-recording conveyance section, which improves the adhesion of the recording paper 21 to the guide plate II, and the recording paper 51
Recording can be performed stably. If a heater 118 is attached to the guide plate 11 for drying after recording, the drying efficiency will be improved because of the good adhesion to the guide plate 11. Further, since the trailing edge of the recording paper 24 is discharged in close contact with the guide plate 11, the drying of the trailing edge of the recording paper 24 does not worsen.

H0 Features and Effects (Part 3) As shown in FIG. 2, in the embodiment of the present invention, the paper feed section 61 is arranged at the front side of the apparatus, the recording section 51 is arranged in the center of the apparatus at an upward rearward angle, and further downstream there is a recording section 61. Rear transport department! l. Since the paper ejecting section 1010 is arranged at the rear upper part of the apparatus, the recording apparatus can be made compact and very easy to operate.

Furthermore, with this layout, as shown in FIGS. 11 and 12, it is easy to install the optional paper feed device 30.
1 can be added, and operability will not deteriorate even when added. Note that 3 is a paper count for another paper feeding device provided at the bottom of the device. In addition, the recording section 51 and the post-recording conveyance section 11
By making the recording part 51 slanted, electrical equipment such as the power supply part 71 (see FIG. 2) or the ink cartridge 18 can be laid out behind it, and the space of the apparatus can be used effectively. As a result, as described above, ink dripping does not occur in the solid black recording area, which is very advantageous for inkjet printers.

[Effects of the Invention] As explained above, according to the present invention, since the recording medium conveyance path of the recording unit and the conveyance unit before and after the recording unit is arranged almost in a straight line, it is possible to cope with a recording unit with a large number of nozzles. This improves the adhesion of the recording medium to the conveying section, eliminating the possibility of the recording medium coming into contact with the recording section, improving recording medium feeding accuracy, and increasing drying efficiency when the conveying section downstream of the recording section is used as a heater. becomes better, and the angle of the above straight line from the horizontal line is 5
Since the angle is set to 0 degrees or less, the nozzles of the recording section face downward, eliminating density unevenness in the solid black recording section due to ink dripping.

Further, according to the present invention, the recording medium conveyance path of the recording section and the conveyance section after recording is arranged in a substantially straight line, and the discharge direction of the discharge roller is made at a predetermined angle with respect to this straight line, so that the discharge roller Since the ejected recording medium is made to hit the stacker section at a predetermined angle, the adhesion of the recording medium to the conveyance path is greatly improved and lifting of the recording medium is eliminated.
The conveyance after recording also ensures that the recording medium is ejected in close contact with the guide plate, which eliminates the risk of the recording medium coming into contact with the recording section, and when the conveyance path is heated, the drying efficiency is greatly improved. to improve.

Furthermore, according to the present invention, the feeding section is arranged at the front side of the device, the recording section is arranged at an upwardly sloping position approximately in the center of the device, and the ejection section is arranged at the rear upper part of the device.
It is more compact and has improved operability.

Furthermore, since the conveyance system is straight, thick paper and the like can be stably conveyed, making it possible to perform high-quality recording on them.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing the overall appearance of the device according to the embodiment of the present invention, FIG. 2 is a vertical cross-sectional view showing the internal structure of the device according to the embodiment of FIG. 1, and FIG. FIGS. 4(8) to 4(D) are perspective views of main parts showing the detailed structure of the paper feeding section of the embodiment, and FIGS. ) is a perspective view, same figure (8)
is a cross-sectional view of A- in the same figure (A), and (C) is a cross-sectional view of the same figure (Δ)
FIG. 5 is a perspective view of a main part showing the detailed configuration of the recovery system of the embodiment shown in FIG. 1. 6 (8) to (D) are longitudinal cross-sectional views showing the operation mode of the paper feed section and the conveyance section of the embodiment of FIG. 1, and FIGS. 7 and 8
Each of the figures is a schematic diagram showing an example of the arrangement and configuration of the conveying section in the embodiment of the present invention, FIG. 9 is a schematic diagram showing a modification of the conveying section in the embodiment of the present invention, and FIG. 1O is an embodiment of the present invention in FIG. 1. 11 and 12 are longitudinal sectional views showing a modification of the embodiment of the present invention shown in FIG. 1, and FIGS. 13 and 14 2A and 2B are vertical cross-sectional views showing the internal configuration of conventional examples, respectively. 5... Carriage, 7... Paper feed roller, 8... Binge roller stay, 9... Paper guide, 10... Paper press plate, 11... Heat plate, 118... Heater, 12 ... Paper discharge roller, 13... Paper discharge pinch roller, 15 ... Guide shaft, 18 ... Ink cartridge, 51 ... Recording head, 52 ... Fixed lever 54 ... Slider 55. 57... Projection portion, 61... Pressure plate, 63... Paper width regulating plate, 65... Separation roller, 66... Separation pad, 81... Pinch roller, 83... Ski fulcrum, 150 ... Recovery system, 156 ... Cap, 201 ... Piston, 1010 ... Paper ejection tray. Figure 3 (A) (A) (D) Figure 6 CD>(B') Figure 9 Figure 8

Claims (1)

[Claims] 1) A feeding unit that feeds a sheet-shaped recording medium, a recording unit that records information on the fed recording medium, and a conveyance unit that conveys the recording medium before and after recording. A recording apparatus having: a recording medium conveyance path of the recording unit and the conveyance unit before and after the recording unit is arranged approximately in a straight line, and the angle of the straight line from the horizontal line is set to 50 degrees or less. Characteristic recording device. 2) a feeding section that feeds a sheet-like recording medium, a recording section that records information on the fed recording medium, a conveying section that conveys the recording medium after recording, and the conveyed recording. A recording device including a discharge roller that discharges a medium and a stacker section that stores the discharged recording medium, wherein a recording medium conveyance path of the recording section and the conveyance section is arranged substantially in a straight line, A recording apparatus characterized in that the recording medium is arranged such that the discharge direction of the discharge roller has a predetermined angle with respect to the discharge roller, and the recording medium discharged by the discharge roller hits the stacker section at a predetermined angle. 3) A recording device having a feeding section that feeds a sheet-like recording medium, a recording section that records information on the fed recording medium, and an ejection section that discharges the recording medium after recording. The feeding section is disposed at the front side of the device, the recording section is disposed at an upwardly sloping position approximately in the center of the device, and the ejection section is disposed at the upper rear side of the device. Recording device. 4) The recording apparatus according to any one of claims 1 to 3, wherein the recording section has means for recording by forming droplets of recording liquid using thermal energy.