JP2002326768A - Double-side image recording device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a double-side image recording device capable of positioning a sheet side edge at a double-side pass part in simple constitution without deteriorating carrying performance. SOLUTION: This device comprises the double-side pass part for reversing a sheet after completion of image recording for the first side to be re-introduced to an image recording part. It also has a sheet abutment part movable corresponding to width direction size of the sheet on the depth side to a sheet carrying direction of the double-side pass part or one side of the operator side.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an image recording apparatus such as a copying machine, a facsimile, a printer, etc., and more particularly to a double-sided image recording apparatus having a transport system for recording images on both sides of a sheet.

[0002]

2. Description of the Related Art Recently, ecology has become an important concept, and there has been an increasing demand for double-sided copying in a copying apparatus in order to reduce sheet consumption.

FIG. 4 shows a typical example of a conventional copying apparatus capable of double-sided copying, in particular, an image recording apparatus for forming a color image.

That is, the latent image formed on the photosensitive drum 100 is transferred a plurality of times onto a sheet carried on the transfer drum 101 by electrostatic force or the like, and then is fixed by the fixing roller 102. The completed sheet is guided to a discharge path by the flapper member 103.

After that, a plurality of sheets are accumulated on the intermediate tray 105 after being reversed by the reversing roller 104 on the way.

After a predetermined number of sheets are accumulated, the sheet is separated and fed one by one again by the pickup roller 106 and the separation roller 111 and is sent to the feeding section 109 as it is.

Thereafter, the copying of the second side is completed through the same image recording process as described above, the sheet is discharged out of the apparatus by the flapper member 103, and the double-sided copying is completed.

This method is a general two-sided copying method even in a monochrome copying apparatus, and has the advantage that the original on the first side and the original on the second side need to be replaced only once when copying a plurality of copies. There is. In addition, the configuration having the intermediate tray 105 can be arbitrarily selected as to the timing of re-feeding the sheets stored on the intermediate tray 105, so that the sheet acts as a buffer tray for timing adjustment that can re-feed sheets at free timing. .

However, since the sheets are temporarily accumulated on the intermediate tray 105 and are separated and fed one by one again by the pickup roller 106 and the separation roller 111, defective stacking, defective pickup, and defective stacked sheets are theoretically possible. There is a drawback in that a jam such as a conveyance failure due to sticking between the sheets may occur.

Therefore, as a method for solving this, an intermediate tray is not provided, and only a reverse pass and a double-sided pass are used.
There is a configuration in which normal feeding and re-feeding are alternately performed (alternate feeding) to perform double-sided copying.

An example is shown in FIG. That is, the sheet on which the image recording of the first side has been completed is conveyed to the double-sided path PH1 by the flapper member 103. Then, on the way, the reversing roller 1
After being reversed by 04, the sheet is conveyed to the two-sided path PH2, and a predetermined amount of the front end is held between the conveying rollers 120 to be on standby.

Next, the sheets stacked on the feed tray 112 are separated and conveyed one by one by the feed roller 110. The conveyed sheet is transported to the transfer drum 101 at a predetermined timing by the registration roller 113,
Adsorbed. Here, the sheet held by the conveying roller 120 and waiting is re-transmitted at a predetermined timing. Thereafter, a predetermined timing is set by the registration roller 113 in the same manner as the sheet fed from the feed tray 112,
The sheet is conveyed and attracted to the transfer drum 101.

The sheet on which image recording has been completed on the transfer drum 101 is conveyed by the post-fixing flapper member 103 to the first-side sheet to the double-sided pass PH1, and the sheet for which second-side image recording has been completed to the outside of the machine. You.

As described above, double-sided copying is performed by alternately performing image recording of the first side from the feeding tray 112 and image recording of the second side from the double-sided pass PH2.

The feature of this configuration is that the configuration is simplified because no intermediate tray is used, and the reliability of sheet conveyance is improved because the loading and re-feeding steps are not performed. This configuration is a unique method when an image recording unit for storing image information of a document is provided in a digital copying apparatus. In recent years, this configuration can be adopted as a background because the memory constituting the image storage unit is inexpensive. This makes it easier to equip the device with an image storage unit.

[0016]

However, a problem with this configuration is that when the image on the first side is fixed and the sheet is conveyed for image recording on the second side, a double-sided pass PH2 is required.
While the sheet is conveyed from the
A deviation of the lateral end position in the direction orthogonal to the sheet conveying direction (hereinafter, lateral registration deviation) occurs, and the position of the image on the first surface and the position of the image on the second surface do not match particularly in the forward direction. That is.

For this reason, various methods have conventionally been used to correct the lateral registration deviation.

In the case of the type having the intermediate tray 105 shown in FIG. 4, when the sheets are stacked on the intermediate tray 105, both ends of the sheets are suppressed by opening and closing the jogging plates provided on the rear side and the front side. In most cases, the edges of the sheets are aligned.

In the case of the type having no intermediate tray as shown in FIG. 5, since the sheet is basically always held between the rollers, the lateral end of the sheet is moved by the aforementioned jogging plate or the like. Cannot be aligned.

For this reason, the lateral end position of the sheet is detected by a movable photosensor or a fixed line sensor, and the image writing position is adjusted to the position of the sheet based on the detected data. In this case, since the position of the sheet in the lateral registration direction is not corrected, the amount of displacement of the lateral end of the sheet is large. The photosensitive drums 100 and the transfer drums 101 to be configured must also be lengthened in the front and rear directions (back and front directions), which leads to an increase in cost and an increase in the size of the apparatus.

When a mobile photosensor is used, a motor for moving the photosensor and complicated control for detecting the end of the sheet from the moving amount and changing the image position are required.

When a fixed line sensor or the like is used, the cost of the sensor is very high because the sensor itself is expensive.

Also, in some models, one end of one side is set as a reference position for sheets of all sizes, and all the sizes corresponding to the lateral ends of the sheets are adjusted by using a skew feeding roller for all sheet sizes. There is also a so-called one-sided reference transport that transports a sheet along a common abutting surface.

However, in the case of the one-sided reference conveyance, compared with the normal conveyance of the center (center) of the sheet,
The position of the roller in contact with (holding) the sheet is not uniform depending on the sheet size, and there is a case where a difference in the conveying force occurs at the back side of the sheet.

For this reason, there is a problem that the sheet is likely to be skewed and the like, and the horizontal registration during the double-sided conveyance can be performed relatively easily, but there remains a problem in the essential sheet conveyance ability.

The present invention has been made in order to solve the above-mentioned problems of the prior art, and has as its object a simple configuration,
It is an object of the present invention to provide a double-sided image recording apparatus capable of aligning a side edge of a sheet in a double-sided pass section without deteriorating transportability.

[0027]

According to the present invention, there is provided an image recording section for recording an image on a sheet, and an image recording section for recording an image on a first surface in the image recording section. A first feeding unit that conveys the sheet, a double-sided pass unit for turning over the sheet after the image recording of the first side is completed, and guiding the sheet to the image recording unit again; A double-sided image recording apparatus having a second feeding unit for feeding the recording sheet to a recording unit; And a movable sheet abutting portion.

It is preferable to provide a width shifting means for abutting a side edge of the sheet to the sheet abutting portion when the sheet is conveyed in the double-sided pass portion.

Preferably, the width shifting means is a skew feeding roller for feeding the sheet obliquely.

It is preferable that the width shifting means is a sweeping roller that conveys the sheet side edge in a direction in which the sheet side abuts against the sheet abutting portion.

[0031] The sheet abutting section has finished moving to a position corresponding to the sheet size before the sheet is conveyed to the double-sided path section and the sheet side edge reaches the sheet abutting section. Is preferred.

[0032] It is preferable that the sheet abutment section moves to a position corresponding to the sheet size after the sheet is conveyed to the double-sided path section and the sheet side edge reaches the sheet abutment section. is there.

After the sheet is conveyed to the double-sided pass section and the side edge of the sheet reaches the sheet abutting section, the sheet side abutment is moved by the width shifting means to the sheet abutting section. It is preferable to move to a position corresponding to the sheet size after starting to move toward.

It is possible to perform double-sided image recording by alternately feeding the first-side sheet by the first feeding means and feeding the second-side sheet by the second feeding means. It is suitable.

It is preferable that the sheet abutting section moves in accordance with sheet size information at the time of recording an image on the first side.

[0036]

Preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings. However, the dimensions of the components described in this embodiment,
The material, shape, relative arrangement, and the like are not intended to limit the scope of the present invention only to them unless otherwise specified.

FIG. 3 is a schematic sectional view of a double-sided image recording apparatus to which the present invention is applied. In this embodiment, a case where the present invention is applied to a full-color image recording apparatus that records a full-color image on a sheet on both sides will be described as an example.

The double-sided image recording apparatus includes an image recording unit 201 for recording an image on a sheet, a first feeding unit 202 for conveying a sheet for recording an image on the first side by the image recording unit 201, and A two-sided pass unit 203 for turning over the sheet after the image recording of the first side is turned over and guiding the sheet to the image recording unit 201 again, and a second unit for feeding the sheet on the two-sided pass unit 203 to the image recording unit 201. And a re-feed roller 56 as feeding means. The feeding of the first sheet by the first feeding unit 202 and the feeding of the second sheet by the re-feed roller 56 are alternately performed to record images on both sides.

More specifically, the present double-sided image recording apparatus has a digital full-color image reader section provided with a digital full-color image reader section at the upper part and an image recording section 201 at the lower part.

In the image reader section, the original 30 is placed on an original platen glass 31 and is exposed and scanned by an exposure lamp 32 so that a reflected light image from the original 30 is condensed by a lens 33 onto a full-color CCD sensor 34 to be colored. Obtain a decomposed image signal. The color-separated image signal is processed by a video processing unit (not shown) through an amplifier circuit (not shown) and sent to a printer unit.

In the image recording unit 201 of the printer unit, the photosensitive drum 1 serving as an image carrier is rotatably supported in the direction of an arrow.
Corona charger 2, laser exposure optical system 3, potential sensor 1
2. Four developing units 4y, 4c, 4m, 4B of different colors
k, the photosensitive drum light intensity detecting means 3, the transfer device 5, and the cleaning device 6 are arranged.

In the laser exposure optical system 3, an image signal from the reader unit is converted into an optical signal by a laser output unit (not shown), and the laser light converted into the optical signal is reflected by the polygon mirror 3a to form a lens 3b. And mirror 3c
Through the surface of the photosensitive drum 1.

In the printer section, the photosensitive drum 1 is rotated in the direction of the arrow, and the photosensitive drum 1 after the charge is removed by the pre-exposure lamp 11 is uniformly charged by the charger 2, and a laser exposure optical system is provided for each separation color. Laser light is irradiated from 3 to form a latent image.

Next, predetermined developing units 4y, 4c, 4m, 4B
By operating k, the latent image on the photosensitive drum 1 is developed, and a toner image based on a resin and a pigment is formed on the photosensitive drum 1. The developing units 4y, 4c, 4m, and 4Bk are eccentric cams 2.
By the operations of 4y, 24c, 24m, and 24Bk, the photosensitive drum 1 is selectively approached in accordance with each separation color.

On the other hand, from the sheet cassette 72 or 73,
Pickup roller 8 constituting first feeding section 202
2, 83 and the separation roller pairs 93, 94, 95, 96, the sheets are fed one by one, and the respective conveyance rollers 41, 42, 43 of the conveyance path 40, and the registration rollers 91
Is supplied to the transfer device 5. In the transfer device 5, the sheet is supplied to a position facing the photosensitive drum 1 via the electrostatic attraction roller unit 5g, and the toner image on the photosensitive drum 1 is transferred to the sheet.

In the present embodiment, the transfer device 5 includes a transfer drum 5a,
A transfer charger 5b, an attraction roller 5g opposed to an attraction charger 5c for electrostatically attracting a sheet, an inner charger 5d,
A transfer sheet 5f made of a dielectric material is integrally stretched in a cylindrical shape in a peripheral opening area of a transfer drum 5a having an outer charger 5e and rotatably supported by a shaft. In the machine of the present embodiment, a dielectric sheet such as a polycarbonate film is used as the sheet supporting sheet 5f.

As the transfer drum 5a rotates, the toner image on the photosensitive drum is transferred by the transfer charger 5b onto the sheet carried on the sheet carrying sheet 5f. A desired number of color images are transferred to the sheet conveyed by being electrostatically attracted to the sheet carrying sheet 5f in this way, and a full-color image is formed.

In the case of full-color image recording, when the transfer of the toner images of four colors is completed in this manner, the sheet is separated from the sheet supporting sheet 5f on the transfer drum 5a by the separating claw 8a, the separating push-up roller 8b and the separating charger 5h. And discharged to the discharge tray 10 via the fixing device 9.

On the other hand, after the transfer, the photosensitive drum 1 is subjected to an image recording process again after the residual toner on the surface is cleaned by the cleaning device 6.

To form an image on both sides of a sheet,
Immediately after the sheet passes through the fixing device 9, the conveyance path switching guide 19 is driven to guide the sheet once to the reversing path 21 via the conveying vertical path 20, and then the reversing roller 21 a is rotated in reverse.
With the trailing end at the time of feeding, the sheet is retreated in the direction opposite to the direction in which it is sent, and is conveyed to the double-sided horizontal path 22. Thereafter, an image is formed on the other surface again by the re-feed roller 56 in the above-described image recording step.

The fur brush 14 is opposed to the fur brush 14 via the sheet carrying sheet 5f in order to prevent scattering of powder such as toner on the sheet carrying sheet 5f and adhesion of oil on the sheet. The cleaning is performed by the action of the backup brush 15 which is to be performed and the backup brush 17 which faces the oil removing roller 16 via the oil removing roller 16 and the sheet supporting sheet 5f. Such cleaning is performed before or after image recording, and is performed at any time when a Jam (sheet) occurs.

In the present embodiment, the eccentric cam 25 is rotated to operate the cam follower 5i integrated with the transfer drum 5a, so that the sheet supporting sheet 5f
The gap between the transfer drum 5a and the photosensitive drum 1 can be set arbitrarily.
And the photosensitive drum 1 are spaced apart.

Next, a configuration for automatically recording an image on both sides of a sheet will be described.

The two-sided path portion 203 includes a vertical path 20, an inversion path 21 extending horizontally from the lower end of the vertical path 20 through a downwardly curved lower curved portion, and a convex path upward from the lower end of the vertical path 20. And a double-sided horizontal path 22 extending horizontally through the upper curved portion.

A vertical path roller 50 is disposed in the vertical path 20, and a reverse roller 21a is disposed in the reverse path 21. Further, the double-sided horizontal path 22 includes a double-sided horizontal path roller 5.
2. Further, double-sided horizontal path intermediate rollers 53, 54 and 55 are arranged, and a re-feed roller 56 as a second feeding means is arranged at the downstream end of the double-sided horizontal path 22.

Therefore, the sheet on which the image on the first side is fixed by the fixing unit 9 is conveyed to the vertical path roller 50 by the switching guide 19, and the sheet once guided to the reversing path 21 is rotated by the reversing roller 21a. The sheet is retreated in a direction opposite to the direction in which the sheet is fed, with the rear end at the leading end, and is conveyed to the two-sided horizontal path roller 52 of the two-sided path 22. After passing through the double-sided horizontal path rollers 52, the sheet is conveyed by double-sided horizontal path intermediate rollers 53 to 55.

As shown in FIG. 1 and FIG. 2, a sheet abutable on one side on the far side or the near side with respect to the sheet conveying direction of the two-sided horizontal path 22 according to the size in the width direction of the sheet. It has a sheet butting plate 58 as a part. The sheet is a center reference, and even if sheets of different sizes are conveyed such that their center lines are at the same position. The sheet abutting plate 58 moves according to the sheet size information at the time of image recording of the first side.

In the area where the sheet abutting plate 58 is disposed, as shown in FIG.
3, 54 and 55 are arranged. These two-sided horizontal path intermediate rollers 53, 54, and 55 are oblique feed rollers serving as width shifting means that are inclined obliquely by θ with respect to the sheet conveyance direction, and strike the sheet toward the sheet strike section 58.

The sheet abutting plate 58 is used for the double-sided horizontal path 22.
The sheet may be moved to a position corresponding to the sheet size before the sheet side edge reaches the sheet abutment plate 58, or the sheet side edge may be After reaching the abutment plate 58, it may be moved to a position corresponding to the sheet size. In the latter case, after the sheet side edge reaches the sheet abutment plate 58, the sheet side edge starts moving toward the sheet abutment plate 58 by the double-sided horizontal path intermediate rollers 53, 54, 55, and then the sheet size is reduced. It is preferable to move to a position corresponding to.

As shown in FIG. 1, the sheet butting plate 58 includes a butting surface portion 58a extending in the carrying direction and a rack portion 58b extending from the butting surface portion 58a in a direction orthogonal to the carrying direction. The portion 58b is guided and supported by the apparatus main body along a guide member 59a arranged in a direction orthogonal to the sheet conveying direction. The motor 59 is operatively connected to the rack 58b via a power transmission mechanism 58c.

The power transmission mechanism 58c converts the rotation of the motor 59 into a linear motion of the rack portion 58b. For example, a pinion (not shown) that meshes with rack teeth (not shown) of the rack portion 58b disposed on the center line N of the seat. Belt mechanism 5
The motor 59 is connected via 8d. Belt mechanism 58
d is a driving belt pulley 58e connected to the motor 59 via a gear train 59b, and a driven belt pulley 5 on the pinion side.
8f and a belt 58g wound around the belt 8f.

The power transmission mechanism 58c includes a belt 58
The rack portion 58b may be connected to the g to perform a linear motion, and the specific configuration is not particularly limited.

As the motor 59, a stepping motor is used. The reason for using the stepping motor is that the control of the number of pulses can be performed, and therefore, the accuracy of the movement amount of the rack 58b, that is, the abutting plate 58, is extremely high.

The movement of the sheet abutting plate 58 is performed by first detecting a home position by a detecting unit (not shown) provided on the rack unit 58b to know its own position and a sensor 58h for detecting the detecting unit.

Next, the sheet abutting plate 58 is moved according to the size information S of the conveyed sheet.
The driving of the motor 59 is controlled by the control means 58i, and the sheet is conveyed. Thereafter, the sheet abutting plate 58 guides the edge of the sheet, and conveys the sheet in a state where the edge of the sheet is uniformly aligned.

As a result, the position of the end of the sheet is always fixed, and the registration is performed once by the re-feed roller 56, and the re-feed roller is transferred to transfer the image on the second surface at a desired timing. By 56, the conveyance toward the transfer drum 5 of the image recording unit 201 is started, and the double-sided copy is completed.

According to the present invention, since the sheet abutting plate 58 is moved in accordance with the sheet size to align the side edges of the sheet, the two-sided horizontal path intermediate rollers 53, 54, 5
By just abutting and conveying the sheet in step 5, it is possible to prevent a lateral registration deviation during double-sided copying.

Further, since the moving structure of the sheet abutting plate 58 can be satisfied with the same function as the jogging plate used in the conventional intermediate tray or the like, the structure is not complicated and the cost is increased. Never.

Further, since the sheet can be conveyed on the second side at the time of double-sided copying by restricting the lateral registration of the sheet in advance, the position of the sheet in the image recording section 201 is guaranteed, and the sheet is positioned in front of the image recording section 201. There is no increase in the direction.

Further, since the sheet conveyance is all performed on the basis of the center, it is possible to adjust the lateral registration of the sheet at the time of double-sided copy while maintaining the conveyance stability of the normal sheet conveyance.

The sheet conveyed to the two-sided horizontal path 22 may come into contact with the sheet butting plate 58 or may be conveyed further toward the sheet butting plate 58 side.

For such a case, in the present embodiment, as shown in FIG. 1, the upstream side of the sheet abutting plate 58 in the transport direction is bent so that the opening is widened, and the sheet abutting plate 58 is disposed. Although the guide to the area can be performed, when the leading edge of the sheet is conveyed, the sheet abutting plate 58 is previously arranged to be wider than the position where the original sheet is to be abutted and aligned, and the three leading edges of the sheet are provided. Even if the sheet abutting plate 58 is moved to the original position at the timing when the sheet passes near the horizontal path intermediate roller 55, the effect is almost the same.

In this embodiment, the sheet is conveyed toward the sheet abutting plate 58 by the skew feeding roller. However, the sheet abutting plate 58 is conveyed during or after the sheet is conveyed. May be directly abutted against the abutting surface by a sweeping roller. Further, the sweeping roller is suitably made of a sponge-based material having a conveying force enough to allow the sheet to idle after the sheet abuts against the abutting surface.

[0074]

As described above, according to the present invention, the position of the sheet side edge is adjusted by moving the sheet abutting portion in accordance with the sheet size. Since the same function as that of the jogging plate can be satisfied, the configuration is not complicated, and the cost does not increase.

Further, since the sheet abutting portion is moved, it is possible to adjust the lateral registration of the sheet during double-sided recording while maintaining the sheet conveyance stability even if the sheet size changes. Therefore, double-sided recording can be performed with a configuration in which conveyance troubles such as skew and Jam are extremely small.

Further, since it is possible to convey the second side of the double-sided recording while regulating the lateral registration deviation of the sheet in advance, the sheet position in the image recording unit is guaranteed, and the image recording unit is large in the rearward and forward direction. There is no change.

Furthermore, an extremely stable double-sided image recording can be performed with a low-cost and simple configuration without requiring an expensive sensor or complicated control.

Further, by providing a width shifting means such as a skew roller or a sweeping roller, the sheet side edge can be surely aligned with the position along the sheet abutting member.

The present invention is particularly suitable for the case where a sheet is conveyed in a through-pass type, that is, a configuration not using an intermediate tray.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram near a sheet abutting plate of a two-sided image recording apparatus according to an embodiment of the present invention.

FIG. 2 is an explanatory diagram showing a relationship between a sheet butting plate and a skew feeding roller in FIG. 1;

FIG. 3 is a main cross-sectional view of a double-sided image recording apparatus to which the present invention is applied.

FIG. 4 is a diagram illustrating a transport path of a conventional intermediate tray type double-sided image recording apparatus.

FIG. 5 is a diagram illustrating a transport path of a conventional trayless duplex image recording apparatus without an intermediate tray.

[Explanation of symbols]

Reference Signs List 20 double-sided path 22 double-sided horizontal path 58 sheet butting plate (sheet abutting portion) 53, 54, 55 double-sided horizontal path intermediate roller (skew roller) 56 re-feeding roller (second feeding means) 58a butting surface 58b Rack unit 58c Power transmission mechanism 59 Motor 201 Image recording unit 202 First feeding unit

Claims (9)

[Claims] An image recording unit for recording an image on a sheet; a first feeding means for conveying a sheet for recording an image on a first surface in the image recording unit; A two-sided image having a two-sided pass unit for turning over the sheet after completion and leading it to the image recording unit again, and a second feeding unit for feeding the sheet on the two-sided pass unit to the image recording unit In the recording apparatus, a double-sided image recording characterized in that the double-sided pass unit includes a sheet abutting unit that is movable in accordance with the size in the width direction of the sheet, on one side on the back side or the front side with respect to the sheet conveying direction. apparatus. 2. A double-sided printing device according to claim 1, further comprising a width shifting means for abutting a side edge of the sheet to the sheet abutting portion when the sheet is conveyed in the two-sided pass portion. Image recording device. 3. A double-sided image recording apparatus according to claim 2, wherein said width shifting means is a skew feeding roller for feeding a sheet obliquely. 4. A double-sided image recording apparatus according to claim 2, wherein said width shifting means is a sweeping roller for conveying a sheet side edge toward said sheet striking portion. 5. The sheet abutting section finishes moving to a position corresponding to the sheet size before a sheet is conveyed to the double-sided path section and a sheet side edge reaches the sheet abutting section. The double-sided image recording apparatus according to any one of claims 1 to 4, wherein: 6. The sheet striking unit moves to a position corresponding to a sheet size after a sheet is conveyed to the double-sided pass unit and a sheet side edge reaches the sheet striking unit. The double-sided image recording apparatus according to any one of claims 1 to 4, wherein: 7. The sheet abutting portion is configured such that after a sheet is conveyed to the double-sided pass portion and a sheet side edge reaches the sheet abutting portion, the sheet side edge is moved to the sheet abutting portion by the width shifting means. 5. The double-sided image recording apparatus according to claim 2, wherein the apparatus moves to a position corresponding to the sheet size after starting to move toward the contact portion. 8. A two-sided image recording is performed by alternately feeding the first sheet by the first feeding means and feeding the second sheet by the second feeding means. The double-sided image recording apparatus according to any one of claims 1 to 7, wherein: 9. The double-sided image recording apparatus according to claim 1, wherein the sheet abutting section moves in accordance with sheet size information at the time of recording an image on the first side. .