JPH07149012A - Recording apparatus - Google Patents

Abstract

PURPOSE:To suppress the generation of the oblique running or jamming of a sheet by shortening the unstable feed distance up to the feed means in a supply route by providing a plurality of the follower means pressed to the feed means to follow to the supply route and a feed route. CONSTITUTION:In a facsimile device, crescent-shaped supply rollers 10, 11 separate the uppermost recording sheets among the recording sheets P on cassettes 8, 9 to supply them and subsequently feed the recording sheets P so as to wind them round a feed roller 12. In this case, a lower guide 13 is provided to the lower part of the feed roller 12 and a first supply route E is constituted along with the feed roller 12 by the guide surface 13a of the lower guide 13. A reversal guide 15 is provided in opposed relation to the guide surface 13b and a second supply route F is constituted by guide surfaces 13b, 15a and a feed route G is constituted by the guide surface 15b of the reversal guide 15 and the feed roller 12 formed on the downstream side of the confluent point of the supply routes E, F and feed rolls 14, 16 are respectively provided to the feed routes E, G as follower means.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a recording device such as a copying machine or a printer.

[0002]

2. Description of the Related Art The structure of a conventional recording apparatus is shown in FIG. The plurality of recording papers 52a and 52b stacked and stored in the cassettes 51a and 51b mounted on the upper and lower sides are fed to the paper feeding paths 54a and 54b one by one from the uppermost side by the paper feeding rollers 53a and 53b. The recording paper 52b fed out from the paper feed path 54b is further conveyed by the feed roller 55. The paper feed path 54a,
A feed roller 56 is provided at the confluence of 54b, and the recording paper 52 fed from one of the cassettes 51a and 51b.
The a and 52b are conveyed by the feed roller 56.

Curved guides 57 and 58 forming a conveyance path 59 are provided on the downstream side of the feed roller 56 in the recording paper conveyance direction, and the recording paper 52 conveyed by the feed roller 56.
A and 52b are reversed and conveyed. The recording papers 52a and 52b conveyed between the guides 57 and 58 are conveyed to the recording unit 62 by the feed rollers 60 and 61. The recording unit 62 records an image on the recording papers 52a and 52b according to image information, and various recording methods such as an electrophotographic recording method, a laser beam method, and an inkjet method are used.

[0004]

Generally, the paper feed roller for feeding the recording papers has a poor conveyance accuracy due to friction between the laminated recording papers and is likely to cause skewing. In the above-mentioned conventional technique, since the paper feed path 54a is not provided with the feed roller, the unstable feeding distance by the paper feed roller 53a is long, and it is easy to increase the skew or the like. In particular, when the paper feed operation is performed by rotating the paper feed roller 53a once, the outer diameter of the paper feed roller 53a must be increased, and the size of the apparatus becomes large. Further, if the feed roller 63 shown by the alternate long and two short dashes line in FIG. 3 is provided in the paper feed path 54a, the number of parts increases and the manufacturing cost rises.

Further, since the transport path 59 is a transport path having a curvature, the recording papers 52a and 52b come into contact with the guides 57 and 58, but the guides 57 and 58 are constituted by fixed guide plates. However, since the frictional resistance is large, there is a possibility that the conveyance accuracy may be reduced, skew may occur, and noise may occur.

The object of the present invention is to solve the above-mentioned problems of the prior art and to maintain the conveyance accuracy of the sheets fed from a plurality of feeding paths with high precision to prevent the occurrence of skewing, noise and the like. To provide a recording device.

[0007]

The typical means of the present invention, which solves the problems of the prior art and is applied to the embodiments described below, is a recording method for recording an image on a sheet according to image information. And the first and second feeding paths provided on the apparatus main body side and the option side for feeding the sheet and the first and second feeding paths, and then guiding the sheet to the recording means. A conveying path for conveying the sheet, the conveying means for conveying the sheet mounted on the conveying path, and a plurality of driven means that are pressed by the conveying means and are driven by the first feeding means. It is characterized in that it is provided in each of the route and the transport route.

[0008]

According to the above-mentioned means, the plurality of driven means which are pressed and driven by the conveying means are provided in the first feeding path and the conveying path respectively, so that the feeding means is fed to the first feeding path on the apparatus main body side. The sheet is nipped and conveyed by the conveying means and the driven means and conveyed to the conveying path. Further, the sheet fed to the second feeding path on the option side is nipped and conveyed by the conveying means and the driven means and conveyed to the conveying path. The sheet guided to the transport path is nipped and transported by the transport means and the follower means provided in the transport path.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a recording apparatus according to the present invention will be described with reference to the drawings. In this embodiment, a facsimile apparatus will be used as the recording apparatus for description. FIG. 1 is an explanatory diagram showing a schematic configuration of a facsimile apparatus, and FIG. 2 is an explanatory diagram showing a configuration of a drive system for a conveying roller and a platen roller.

(Overall structure)

First, a schematic structure of a facsimile apparatus will be described with reference to FIG. The facsimile apparatus is equipped with a document reading section A for reading a document image and a recording section B for recording on a recording sheet according to image information.

First, the structure of the document reading section A will be described. In FIG. 1, reference numeral 1 is a document placing table on which a document is placed with its image side facing down. A document placed on the document table 1 is positioned by a slider 1a movable in the width direction. Reference numeral 2 denotes a pre-conveying roller, which pre-conveys the originals placed on the original table 1. A separation roller 3a cooperates with a separation pressing piece 3b that presses the separation roller 3a to separate and convey the pre-conveyed originals one by one. Reference numerals 4a and 4b denote document transport rollers and document transport rollers that transport the separated and transported document to the reading position. Reference numeral 5 denotes a contact sensor, which reads an original image that is conveyed while being sandwiched by the original conveying rollers 4a and the original conveying rollers 4b. Reference numerals 6a and 6b denote document discharge rollers and document discharge rollers, which convey the document after image reading and discharge it to a document discharge tray 7 formed on the upper surface of the apparatus. Further, an operation panel C provided with a numeric keypad and various function keys is provided on the upper surface of the document reading section A.

Next, the structure of the recording unit B will be described.
The recording section B has an apparatus main body side X and an option side Y which can be attached to and detached from the apparatus main body side. In FIG. 1, reference numerals 8 and 9 denote cassettes that can store a plurality of recording sheets P stacked therein. The cassettes 8 and 9 are mounted on the lower part of the apparatus from the left side of the drawing up and down.
Are mounted on the option side Y respectively. The cassettes 8 and 9 are case-shaped main body cases 8 for storing the recording sheets P.
An intermediate plate 8b9b for stacking recording sheets P in a and 9a is provided. The intermediate plates 8b and 9b are feeding rollers described later.
The pressure springs 8c and 9c arranged so as to face 10 and 11 are urged upward from the back surface. Denoted at 8d and 9d are separation claws for locking the leading end of the recording sheet P. Reference numerals 8e and 9e denote rear end regulating plates which regulate the longitudinal rear end position of the recording sheets P stacked on the middle plate 8b9b. 8f and 9f are side regulating plates, and the recording sheets P stacked on the middle plates 8b and 9b.
The widthwise end position of the.

Numerals 10 and 11 are feeding rollers for feeding the recording sheets P stacked and stored in the cassettes 8 and 9 to the separating claw 8
Only the uppermost one sheet is separated and fed by the cooperative action with d and 9d. The feeding rollers 10 and 11 have a half-moon shape, and contact with the recording sheet P to feed the circular arc surfaces 10a and 11a.
And a flat surface portion that faces the recording sheet P with a predetermined interval.
10b and 11b, the flat portions 10b and 11b face the recording sheet P in the feeding standby state. Further, at the time of feeding, the recording sheet P is fed out by rotating once by one rotation spring clutch or the like (not shown).

Reference numeral 12 denotes a conveying roller, which is the feeding roller 1 described above.
The recording sheet P separated and fed by 0 and 11 is conveyed so as to be wound. A lower guide 13 is provided below the carrying roller 12, and a guide surface 13 a facing the carrying roller 12 forms a first feeding path E together with the carrying roller 12. A transport roller 14 is provided on the guide surface 13a and is pressed against the transport roller 12 by a leaf spring 14a.

Reference numeral 15 is a reversing guide, and guide surfaces 15a, 15
b. The guide surface 15a faces the guide surface 13b formed on the lower guide 13, and these guide surfaces
13b and 15a form a second feeding path F that guides the recording sheet P fed from the option side Y to the conveying roller 12. The guide surface 15b is formed so as to face the transport roller 12, has a curvature larger than the transport roller 12 by a predetermined amount, and guides the recording sheet P to be reversed and transported. The guide surface 15b is formed on the downstream side from the confluence of the first feeding path E and the second feeding path F, and forms the feeding path G together with the feeding roller 12. Further, a transport roller 16 is provided on the guide surface 15b and is pressed against the transport roller 12 by a leaf spring 16a. Furthermore, the above-mentioned inversion guide
Reference numeral 15 is attached to the apparatus main body side X so as to be openable and closable, as shown by the chain double-dashed line in the figure.

Reference numeral D is a recording means for recording an ink image on the recording sheet P conveyed by the conveying roller 12. As a recording means in this apparatus, an inkjet recording method is used in which ink is ejected from a recording head to perform recording. That is, this recording head has a fine liquid discharge port (orifice), a liquid passage and an energy acting portion provided in a part of this liquid passage, and energy generation for generating droplet forming energy for acting on the liquid in the acting portion. Equipped with means.

As an energy generating means for generating such energy, a recording method using an electromechanical transducer such as a piezo element, electromagnetic waves such as a laser are irradiated to generate heat, and droplets are ejected by the action of the heat generation. There are a recording method using an energy generating means, a recording method using an energy generating means for heating a liquid and discharging the liquid by an electrothermal converter such as a heating element having a heating resistor.

Among them, the recording head used in the ink jet recording method for ejecting a liquid by thermal energy has a high density of liquid ejection ports (orifices) for ejecting recording liquid droplets to form ejection liquid droplets. Since they can be arranged, high resolution recording is possible. Among them, the recording head using the electrothermal converter as the energy generating means can easily be made compact, and has the advantages of the IC technology and the microfabrication technology, which have been remarkably improved in technology and reliability in the recent semiconductor field. This is advantageous because it can be used in two parts, high-density mounting is easy, and the manufacturing cost is low.

In this embodiment, a disposable type ink jet cartridge 17 in which a recording head and an ink tank are integrated is used. The ink jet cartridge 17 is mounted on a carriage 18 and a recording sheet P is attached.
Recording is performed by running in the width direction of. A platen plate 19 is provided so as to face the inkjet cartridge 17 and supports the recording sheet P from the back side at the recording position.

Reference numeral 20 denotes a platen roller, which is arranged on the upstream side of the platen plate 19 in the sheet conveying direction and has a recording sheet P.
Are transported to the platen plate 19. Reference numeral 21 is a pressing roller that presses the platen roller 20 and follows it. An upper guide 22 guides the recording sheet P conveyed by the conveying roller 12 between the platen roller 20 and the pressing roller 21. An edge sensor 23 detects the leading edge position of the recording sheet P. 2
Numerals 4 and 25 are feed rollers and spurs, which are arranged on the downstream side of the platen plate 19 in the sheet conveying direction, and convey the recording sheet P after recording is completed to the downstream side. The spur 25 is provided so as to face the feed roller 24, and is made of a material that does not transfer ink even when it comes into contact with the recording surface of the recording sheet P. A discharge roller 26 discharges the recording sheet P conveyed by the feed roller 24 to the recording sheet discharge tray 27. A spur 25 is also provided so as to face the discharge roller 26, and the recording sheet P is conveyed and discharged by the cooperation of both.

The option side Y is equipped with the cassette 9 and the feeding roller 11 as described above. A feed roller 29 is provided on the option frame 28, and the recording sheet P fed by the feeding roller 11 is conveyed to the second feeding path F formed on the apparatus main body X side. The positions of the feed roller 29 and the transport roller 16 are determined so that the distance from the feed roller 29 to the transport roller 16 is shorter than the shortest recording sheet length that can be stored in the cassette 9. As a result, the recording sheet P fed from the option side Y can be reliably transported to the transport path G.

(Structure of drive system)

Next, the structure of the drive system for the transport roller 12 and the platen roller 20 of the recording section B will be described with reference to FIG. The transport roller 12 has a rubber portion 12a and a cored bar portion 12b, which are integrally connected. Clutch gears 30 and 31 each having a built-in one-way clutch are attached to both ends of the core 12b.

The clutch of the clutch gear 30 is locked by the rotation in the direction of arrow H in the figure, and the conveying roller 12 integrally rotates in the direction of arrow I. Further, in the rotation in the direction opposite to the arrow H direction, the clutch becomes free, and only the clutch gear 30 idles while the transport roller 12 is stopped.

Similarly, the clutch of the clutch gear 31 is locked by the rotation in the direction of arrow J in the figure, and the conveying roller 12 is integrally rotated in the direction of arrow I. Also, in the rotation in the direction opposite to the arrow J direction, the clutch becomes free and the transport roller 12
Only the clutch gear 31 idles while is stopped.

A feeding motor 32 transmits rotation to the clutch gear 30 via the motor gears 33 and 34, and drives the feeding rollers 10 and 11 via a transmission system (not shown). 35
Is a platen motor, the motor gear 36, the platen gear
The platen roller 20 integrally connected to the platen gear 37 via 37 is rotated. In addition, the above platen motor
The rotation of 35 is also transmitted from the platen gear 37 to the clutch gear 31 via the gears 38, 39, 40.

Next, the recording operation of the above facsimile apparatus will be described with reference to FIGS. First, when a recording start signal is transmitted by a control unit (not shown) on the apparatus main body side X, the feeding motor 32 is started to feed the feeding roller.
While rotating 10 once, the conveying roller 12 is rotated in the direction of arrow I in FIG. 2 via the clutch gear 30. At this time, since the platen motor 35 is stopped, the platen roller 20 is stopped. Further, since the clutch of the clutch gear 31 becomes free, the transport roller 12 rotates in the direction of arrow I in FIG. 2 while the clutch gear 31 is stopped. Only the uppermost one of the recording sheets P is fed out from the cassette 8, passes through the first feeding path E formed by the peripheral surface of the conveying roller 12 and the guide surface 13a of the lower guide 13, and is conveyed to the conveying roller 12. Transport roller 14
It is sandwiched between and transported. Furthermore, the transport roller 12 and the transport roller
Recording means D while being sandwiched by 16 and reversing the conveyance path G
Be transported to.

On the option side Y, the recording sheet P is fed from the cassette 9 by the feeding roller 11 and is fed to the second feeding path F formed on the apparatus main body X side by the feed roller 29, similarly to the apparatus main body X side. Transport to. Then, it is nipped by the conveyance roller 12 and the conveyance roller 16 and conveyed to the recording means D while reversing the conveyance path G.

When the recording sheet P conveyed by the conveying roller 12 is conveyed by a predetermined amount after the leading edge is detected by the edge sensor 23, the recording sheet P abuts on the nip between the platen roller 20 and the pressing roller 21 and skew feeding is corrected. It Here, the driving of the feeding motor 32 is stopped and the rotation of the carry roller 12 is stopped. Next, the platen motor 35 is activated to rotate the platen roller 20, and at the same time the carrier roller 12 is rotated in the direction of arrow I in FIG. 2 via the clutch gear 31. At this time, since the feeding motor 32 is stopped, the feeding roller 10 is stopped. Further, since the clutch of the clutch gear 30 becomes free, the transport roller 12 rotates in the direction of arrow I in FIG. 2 while the clutch gear 30 is stopped. By driving the platen motor 35 by a predetermined amount, the leading end of the recording sheet P is conveyed onto the platen plate 19 at the recording position downstream of the platen roller 20.

Next, while the conveyance operation of the recording sheet P is stopped, the carriage 18 is moved and the ink jet cartridge 17 records the first line. Then 2
In preparation for the recording of the line, the platen motor 35 is driven again by a predetermined amount to rotate the platen roller 20 and the conveying roller 12 to convey the recording sheet P by a predetermined amount. The above operation is repeated to complete the recording for one page.

After the recording is completed, the platen motor 35 is driven to rotate the platen roller 20, and at the same time, the feed roller 24 and the discharge roller 26 are driven by the transmission means (not shown) to convey the recording sheet P and convey the recording sheet discharge tray 27. To discharge. If the next page is recorded, the recording operation described above is repeated.

According to the above construction, since the conveying rollers for pressing the conveying roller 12 are provided in the first feeding path E and the conveying path G respectively, on the apparatus main body side X, the feeding roller 10 reaches the conveying roller 12. It is possible to shorten the unstable conveyance distance up to, and to reduce the skew and jam of the recording sheet P.
Further, by pressing a plurality of rollers against the transport roller 12, the recording sheet P can be sufficiently wound around the transport roller 12, and the transport operation is stabilized. Therefore, the recording sheet P can be conveyed with high accuracy.

Further, since the conveying path G is formed by the peripheral surface of the conveying roller 12 and the guide surface 15b having a curvature larger than the conveying roller 12 by a predetermined amount, the inner wall of the conveying path G is the roller peripheral surface. The frictional resistance due to the guide surface during transportation can be made extremely small, and noise and the like can be prevented.

Further, since it is not necessary to increase the outer diameter of the carrying roller 12 more than necessary, it is possible to contribute to downsizing of the apparatus, and one carrying roller 12 for carrying the recording sheet P to the recording means D is provided. Therefore, the number of parts can be reduced and the manufacturing cost can be reduced.

Although the ink jet recording method is used as the recording means in the above-described embodiment, the electrothermal converter is energized according to a recording signal, and the thermal energy applied by the electrothermal converter causes the ink. More preferably, recording is performed by ejecting the ink from the ejection port due to the growth and contraction of bubbles generated in the ink by utilizing the film boiling.

With regard to its typical structure and principle, it is preferable to use the basic principle disclosed in, for example, US Pat. Nos. 4,723,129 and 4740796. This method can be applied to both the so-called on-demand type and continuous type, but in the case of the on-demand type in particular, it is arranged corresponding to the sheet or liquid path holding the liquid (ink). By applying at least one drive signal to the electrothermal transducer, which corresponds to the recorded information and gives a rapid temperature rise beyond nucleate boiling,
This is effective because heat energy is generated in the electrothermal converter to cause film boiling on the heat acting surface of the recording head, and as a result, bubbles in the liquid can be formed in a one-to-one correspondence with this drive signal. Due to the growth and contraction of the bubbles, the liquid is ejected through the ejection openings to form at least one droplet. It is more preferable to make this drive signal into a pulse shape because bubbles can be grown and contracted immediately and appropriately, so that particularly excellent liquid ejection can be achieved.

As the pulse-shaped drive signal, those described in US Pat. Nos. 4,463,359 and 4,345,262 are suitable. If the conditions described in US Pat. No. 4,313,124 of the invention relating to the rate of temperature rise on the heat acting surface are adopted, more excellent recording can be performed.

As the constitution of the recording head, in addition to the combination constitution of the ejection port, the liquid passage, and the electrothermal converter (the linear liquid passage or the right-angled liquid passage) as disclosed in the above-mentioned respective specifications. The present invention also includes configurations using US Pat. Nos. 4,558,333 and 4,459,600, which disclose configurations in which the heat acting portion is arranged in a bending region.

Further, JP-A-59-123670, which discloses a structure in which a common slit is used as a discharge portion of the electrothermal converter for a plurality of electrothermal converters, and an opening for absorbing a pressure wave of thermal energy are disclosed. Japanese Patent Laid-Open Publication No.
The effect of the present invention is effective even if the configuration is based on Japanese Patent Laid-Open No. 59-138461. That is, according to the present invention, recording can be surely and efficiently performed regardless of the form of the recording head.

Further, the present invention can be effectively applied to a full line type recording head having a length corresponding to the maximum width of a recording medium which can be recorded by the recording apparatus. Such a recording head may have a structure that satisfies the length by combining a plurality of recording heads or a structure as one recording head integrally formed.

In addition, even in the case of the serial type described above, when the recording head is fixed to the carriage or mounted on the carriage, it is possible to electrically connect to the apparatus main body and supply ink from the apparatus main body. A replaceable chip type recording head or the like may be used.

Further, it is preferable to add a recovery means for the recording head, a preliminary auxiliary means, etc., which are provided as a constituent of the recording apparatus of the present invention, because the effects of the present invention can be further stabilized. Specifically, these are capping means, cleaning means, pressurizing or suctioning means for the recording head, preheating means by electrothermal conversion type or other heating element or a combination thereof, and recording. It is also effective to perform a stable recording by performing a preliminary discharge mode in which another discharge is performed.

Regarding the type and number of recording heads mounted on the carriage, for example, only one recording head is provided corresponding to a single color ink, or a plurality of inks having different recording colors and densities are supported. And a plurality of them may be provided. That is, for example, the recording mode of the recording apparatus is not limited to a recording mode of only the mainstream color such as black, but may be a combination of a plurality of recording heads integrally formed, but a mixed color of different colors or a mixed color It is also applicable to a device with at least one of the full colors according to

In addition, although the ink is described as a liquid in the above-mentioned embodiments, it is an ink which solidifies at room temperature or lower and softens or liquefies at room temperature, or in the ink jet recording system. 30 inks
Generally, the temperature is controlled in the range of ℃ to 70 ℃ to control the temperature of the ink so that the viscosity of the ink is within the stable ejection range. good. In addition, it is possible to prevent the temperature rise due to thermal energy from being positively used as the energy for changing the state of the ink from the solid state to the liquid state, or to use ink that solidifies when left standing for the purpose of preventing ink evaporation. However, in any case, when heat ink is liquefied by applying heat energy according to the recording signal and liquid ink is ejected, or when the ink reaches the recording sheet, it begins to solidify. It is also applicable when using an ink that has the property of being liquefied for the first time by energy.

The ink in such a case is described in JP-A-54-5.
As described in Japanese Patent No. 6847 or Japanese Patent Laid-Open No. 60-71260, a mode in which it is opposed to the electrothermal converter in a state of being held as a liquid or a solid in the concave portion or through hole of the porous sheet. Also good. The most effective one for each of the above-mentioned inks is to execute the above-mentioned film boiling method.

Further, as a form of the above-mentioned recording device,
Not only a facsimile machine but also an image output terminal of an information processing apparatus such as a computer, a copy machine combined with a reader or the like may be used.

Although an example of using the ink jet recording method as the above-mentioned recording means has been described, the present invention is not limited to the ink jet recording method, and other thermal transfer recording method, heat sensitive recording method, Can also be applied to a recording method other than the impact recording method such as the wire dot recording method. Further, it is not necessary to limit to the serial recording method, and a so-called line recording method may be used.

[0049]

As described above, according to the present invention, a plurality of driven means, which are pressed and driven by the conveying means, are provided in the first feeding path and the conveying path, respectively. The sheet fed to the feeding path is nipped and conveyed by the conveying means and the driven means and conveyed to the conveying path. Therefore, the first
It is possible to shorten the unstable conveyance distance to the conveyance means in the feeding path, reduce the occurrence of skewed sheets, jams, etc., and it is possible to convey the sheet with high accuracy. Become.

Further, since the conveying path is formed by the peripheral surface of the conveying means and the guide surface having a curvature larger than the conveying means by a predetermined amount, the inner wall of the conveying path is the peripheral surface of the conveying means. The frictional resistance due to the surface can be made extremely small, and the generation of noise and the like can be prevented.

Furthermore, since it is not necessary to increase the outer diameter of the above-mentioned conveying means more than necessary, it is possible to contribute to downsizing of the apparatus, and since the conveying means for conveying the sheet to the recording means is sufficient at one place, the parts The number of points can be reduced and the manufacturing cost can be reduced.

[Brief description of drawings]

FIG. 1 is an explanatory diagram showing a schematic configuration of a facsimile apparatus.

FIG. 2 is an explanatory diagram showing a configuration of a drive system for a transport roller and a platen roller.

FIG. 3 is an explanatory diagram showing a configuration of a conventional recording apparatus.

[Explanation of symbols]

 A ... Original reading section B ... Recording section C ... Operation panel D ... Recording means E ... First feeding path F ... Second feeding path G ... Conveyance path 1 ... Original placing table 1a ... Slider 2 ... Preliminary conveyance roller 3a ... Separation roller 3b ... Separation pressing piece 4a ... Original conveyance roller 4b ... Original conveyance roller 5 ... Contact sensor 6a ... Original ejection roller 6b ... Original ejection roller 7 ... Original ejection tray 8, 9 ... Cassette 8a, 9a ... Main body case 8b, 9b ... Middle plate 8c, 9c ... Pressure spring 8d, 9d ... Separation claw 8e, 9e ... Rear end regulation plate 8f, 9f ... Side regulation plate 10, 11 ... Feed roller 10a, 11a ... Arc surface 10b, 11b ... Plane Part 12 ... Conveying roller 12a ... Rubber part 12b ... Core part 13 ... Lower guide 13a, 13b, 15a, 15b ... Guide surface 14, 16 ... Conveying rollers 14a, 16a ... Leaf spring 15 ... Reversing guide 17 ... Inkjet cartridge 18 … Carriage 19… Platen plate 20 ... Platen roller 21 ... Pressing roller 22 ... Upper guide 23 ... Edge sensor 24 ... Feed roller 25 ... Spur 26 ... Ejection roller 27 ... Recording sheet ejection tray 28 ... Option frame 29 ... Feed rollers 30, 31 ... Clutch gear 32 … Feed motor 33, 36… Motor gear 34, 38, 39, 40… Gear 35… Platen motor 37… Platen gear

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Atsushi Saito 3-30-2 Shimomaruko, Ota-ku, Tokyo Canon Inc. (72) Noriyuki Aoki 3-30-2 Shimomaruko, Ota-ku, Tokyo Canon (72) Inventor Akio Okubo 3-30-2 Shimomaruko, Ota-ku, Tokyo Canon Inc. (72) Inventor Shigeyuki Sugiyama 3-30-2 Shimomaruko, Ota-ku, Tokyo Canon Inc.

Claims (5)

[Claims] 1. A recording unit for recording an image on a sheet according to image information, first and second feeding paths provided on an apparatus main body side and an option side for feeding the sheet, and the first and second feeding paths. 1, a conveying path for guiding a sheet to the recording means after the second feeding path merges, a conveying means for conveying a sheet mounted on the conveying path, and a pressing means to be driven by the conveying means. A recording apparatus comprising: a plurality of driven means, wherein the driven means is provided in each of the first feeding path and the conveying path. 2. The recording apparatus according to claim 1, wherein the conveying path is provided with guide means having a curvature larger than the curvature of the conveying means by a predetermined amount. 3. The recording apparatus according to claim 1, wherein the recording apparatus is an inkjet recording system in which a recording unit ejects ink in accordance with a signal to perform recording. 4. The recording apparatus according to claim 3, wherein the recording apparatus includes an electrothermal converter for generating thermal energy for ejecting ink by the recording unit. 5. The recording apparatus according to claim 4, wherein the recording means causes the ink to be ejected from the ejection port by utilizing the film boiling generated in the ink by the thermal energy applied by the electrothermal converter. The recording device described.