JP2014114126A - Sheet cassette and image formation apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a sheet cassette and an image formation apparatus capable of ensuring first and second side restriction members are fixed or the fixing thereof is released by one operation and improving operability.SOLUTION: A sheet cassette 1 includes: a cassette main body 1a on which a sheet can be loaded; a first side restriction plate 2 and a second side restriction plate 4 movable in an interlocking manner in a direction of approaching or separating from each other for restricting both ends of the sheet loaded on the cassette main body 1a; and locking means (3, 5, 6, 19, and 20) integrally locking the first and second side restriction plates 2 and 4. This can ensure that the first and second side restriction plates 2 and 4 are fixed or the fixing thereof is released by one operation.

Description

  The present invention relates to a sheet cassette for storing sheets and an image forming apparatus including the sheet cassette.

  2. Description of the Related Art Conventionally, an image forming apparatus such as a copying machine or a printer that prints characters and images by feeding a sheet to an image forming unit includes a sheet feeding device for feeding a sheet as recording paper to the image forming unit. ing.

  In general, such a sheet feeding apparatus is provided with a sheet cassette for storing sheets and a sheet feeding unit such as a feeding roller for feeding sheets from the sheet cassette.

  Regarding the direction of attaching and detaching the sheet cassette to the image forming apparatus, there is a method called side loading in which the sheet cassette is attached and detached in the same direction as the sheet feeding direction. There is also a front loading type system in which a sheet cassette is attached and detached in a direction orthogonal to the sheet feeding direction. Generally, the direction in which the sheet cassette is attached / detached is the front of the image forming apparatus, and the operation of the image forming apparatus is performed on the front.

  The sheet cassette has a side regulation plate that regulates the position in the sheet width direction and a rear end regulation plate that regulates the rear end position of the sheet in the sheet feeding direction in order to accommodate a plurality of sheet sizes. ing.

  And the position of the sheet | seat accommodated is regulated by moving a side regulation board and a rear end regulation board according to the size of the sheet | seat accommodated. The left and right side restricting plates are provided with an interlocking mechanism so that when one of the first side restricting plates is moved, the other second side restricting plate is interlocked. For example, as the interlocking mechanism, each side restricting plate has a rack portion, the left and right rack portions are interlocked via a gear member, and the second side restricting plate is interlocked by moving the first side restricting plate. To do.

  The side regulating plate needs to be fixed so as not to be displaced at a position where the sheet is regulated. In the related art, there is a configuration in which a fixing means is provided only on the first side regulating plate and the second side regulating plate is held via a coupling mechanism.

  As an example of the configuration in which the fixing means is provided only on the first side regulating plate, a chevron shape (a jagged shape) is provided on each of the cassette body and the stopper provided on the first side regulating plate, and the first stopper is The cassette is fixed by energizing and engaging the angled shape on the cassette body side with a spring. In order to release the fixing in this structure, the operation lever is operated to move the stopper against the spring biasing force, and the engagement of the mountain shape is released to make the side regulating plate movable.

  However, in the configuration in which only the first side restricting plate is fixed, the position of the second side restricting plate is determined via the rack portion and the gear member, so the backlash of the meshing portion between the rack portion and the gear member is the same. The two-side restricting plate may be displaced. For this reason, if the position shift of the second side regulating plate occurs during sheet feeding, a shift occurs between the position of the image and the position of the sheet in the image forming unit, which may cause an image defect.

  Therefore, a configuration has been proposed in which the second side restriction plate is provided with fixing means similar to the first side restriction plate, and the first and second side restriction plates are provided with fixing means, and the respective fixing means are operated. Then, the first and second side regulating plates are fixed (see Patent Document 1).

JP 2006-137597 A

  As described in Patent Document 1, in the technique of fixing not only the first side regulating plate but also the second side regulating plate, the second side regulating plate is released when moving the side regulating plate, and the movement is finished. The complicated operation of fixing again at the time becomes necessary.

  Therefore, the number of operations increases and the operation becomes complicated, and if any of the side regulating plates is not fixed, the position of the unfixed side regulating plate is determined via the rack portion and the gear member. . Therefore, as in the configuration in which the fixing means is provided only on one side regulating plate, the position of the second side regulating plate may be shifted by the amount of backlash required for connecting the rack portion and the gear member.

  SUMMARY OF THE INVENTION An object of the present invention is to provide a sheet cassette and an image forming apparatus that can reliably fix and release the first and second side restricting members with a single operation and have good operability.

  In the sheet cassette, the cassette main body capable of stacking sheets, and the cassette main body and the cassette main body that are supported by the cassette main body and interlocked with each other in the direction of contact and separation to regulate both ends of the sheets stacked on the cassette main body. A movable first side restricting member and a second side restricting member, and locking means for integrally locking the first and second side restricting members are provided.

  According to the present invention, since it is possible to reliably fix and release both the first and second side regulating members with a single operation, it is possible to provide a sheet cassette and an image forming apparatus with improved operability. it can.

The top view which shows the structure of the sheet cassette which concerns on embodiment of this invention. (A), (b) is a perspective view which shows the structure of the 1st side regulation board in this embodiment. (A)-(d) is sectional drawing which shows operation | movement of the 1st and 2nd stopper in this embodiment. (A), (b) is detail drawing which shows the latching | locking part of the 1st and 2nd stopper in this embodiment. 1 is a cross-sectional view of an image forming apparatus equipped with a sheet cassette according to an embodiment.

  DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, exemplary embodiments of the invention will be described in detail with reference to the drawings. FIG. 5 is a cross-sectional view illustrating a schematic configuration of the image forming apparatus 100 including the sheet cassette 1 according to the embodiment of the present invention.

[Image forming apparatus]
In FIG. 5, reference numeral 100 denotes an image forming apparatus, and 101 denotes an image forming apparatus main body (hereinafter referred to as an apparatus main body). An automatic document feeder 120 and an image reading unit 130 that reads a document placed on the platen glass 120a by the feeder 120 are disposed on the upper part of the apparatus main body 101.

  Below the image reading unit 130, an image forming unit 102 that forms an image on the sheet S sent out from the sheet cassette 1 and a sheet feeding device 11 that feeds the sheet S to the image forming unit 102 are arranged. It is installed. Here, the image forming unit 102 is provided with a photosensitive drum 112, a developing device 113, a laser scanner unit 111, and the like.

  The sheet feeding apparatus 11 includes a plurality of sheet cassettes 1 that store sheets S such as OHT and are detachable from the apparatus main body 101, a feeding roller 15 that feeds the sheets S stored in the sheet cassette 1, and the like. ing. The sheet cassette 1 has a cassette body 1a (see FIG. 1) that can move in the mounting direction b (see FIG. 1) with respect to the apparatus main body 101, is detachable from the apparatus main body 101, and can stack sheets S.

  Next, an image forming operation of the image forming apparatus 100 having the above configuration will be described. First, the sheet cassette 1 is provided so that it can be pulled out in the front direction of FIG. 5, and a sheet such as paper or OHT forming an image is set by the user.

  When an image reading signal is output from the control unit 14 to the image reading unit 130, the image reading unit 130 reads an image. Image information read by the image reading unit 130 or image information transmitted from an external connection cable (not shown) is processed by the control unit 14. The control unit 14 is provided in the apparatus main body 101 and comprehensively controls each unit of the image forming apparatus 100.

  Thereafter, the laser beam corresponding to the electric signal is irradiated onto the photosensitive drum 112 from the laser scanner unit 111. At this time, the photosensitive drum 112 is charged in advance, and an electrostatic latent image is formed by irradiation with light. Then, the electrostatic latent image is developed by the developing device 113, whereby toner is formed on the photosensitive drum. An image is formed.

  On the other hand, when a feeding signal is output from the control unit 14 to the sheet feeding device 11, the feeding roller 15 rotates and the sheet S is sent out from the sheet cassette 1. Thereafter, the fed sheet S is sent to a transfer unit constituted by the photosensitive drum 112 and the transfer charger 118 in synchronization with the toner image on the photosensitive drum by the registration roller 117.

  Next, the sheet S thus sent to the transfer unit is conveyed to the fixing unit 114 after the toner image is transferred. Thereafter, the unfixed transfer image is fixed on the sheet S by being heated and pressurized by the fixing unit 114. Then, the sheet on which the image is fixed is discharged from the apparatus main body 101 to the discharge tray 119 by the discharge roller 116.

  When the sheet is fed by the sheet feeding device 11, the lifter (push-up plate) 8 (FIG. 1) is rotated upward by a lift-up mechanism (sheet lifting mechanism) (not shown), and the intermediate plate 22 (FIG. 1) The downstream end of the sheet placed in the sheet feeding direction is lifted to a height at which feeding can be performed. Accordingly, the sheet S is pressed against the feeding roller 15 with a predetermined pressure.

  Thereafter, the uppermost sheet S is fed by the rotation of the feeding roller 15. Thus, the sheet S fed from the feeding roller 15 is separated and conveyed one by one by the feed roller 16 and the retard roller 17, and sent to the registration roller 117.

[Sheet feeding device]
Next, the sheet feeding apparatus 11 including the sheet cassette 1 according to the present embodiment will be described. FIG. 1 is a plan view showing a sheet cassette 1 according to the present embodiment. In the present embodiment, as shown in FIG. 5, the sheet cassette 1 is arranged at four places, but these structures are substantially the same.

  The sheet cassette 1 is attached to the apparatus main body 101 so that it can be pulled out in a direction orthogonal to the sheet feeding direction (front-back direction in FIG. 5). In FIG. 1, an arrow a indicates a drawing direction in which the sheet cassette 1 is pulled out from the apparatus main body 101, and an arrow b indicates a mounting direction in which the sheet cassette 1 is mounted on the apparatus main body 101. An arrow d indicates the sheet feeding direction in which the sheet S stored in the sheet cassette 1 is fed.

  The sheet cassette 1 includes a box-shaped cassette main body 1a having an upper opening, and a handle portion 21 provided on the front side (lower side in FIG. 1) when the cassette main body 1a is attached to the apparatus main body 101. Yes. The sheet cassette 1 is arranged in a cassette main body 1a on which sheets can be stacked, and the first side as a first side regulating member that regulates the position of the side end portion in the width direction orthogonal to the sheet feeding direction d of the sheets. A restriction plate 2 and a second side restriction plate 4 as a second side restriction member are provided.

  Both side regulating plates 2 and 4 are supported by the cassette body 1a and can regulate both ends in the mounting direction b of the sheets stacked on the cassette body 1a (both ends in the width direction orthogonal to the sheet feeding direction d). In such a manner, they are configured to approach or separate by the same distance in conjunction with each other. That is, the first and second side regulating plates 2 and 4 are supported by the cassette body 1a so as to be movable in the width direction according to the position of the side edge of the sheet, and the both ends of the sheets stacked on the cassette body 1a are supported. In order to regulate, it is configured to be movable in conjunction with each other in the approaching and separating directions.

  In addition, the sheet cassette 1 stacks the sheet S with a trailing edge regulating plate 13 that regulates the position of the trailing edge that is the upstream edge (the left edge in FIG. 1) of the sheet S in the sheet feeding direction d. A plate 22 and a lifter 8 that pushes up the intermediate plate 22 are provided. The trailing edge regulating plate 13 is disposed in the cassette body 1a so as to be movable in the sheet feeding direction in accordance with the position of the trailing edge of the sheet.

  The rack part 2a is integrally provided on the first side restriction plate 2 as the first side restriction member, and the rack part 4a is integrally provided on the second side restriction plate 4 as the second side restriction member. In the cassette body 1a, two pinion gears (gear members) 7a and 7a are rotatably provided so as to mesh with the rack portions 2a and 4a. Thus, a rack and pinion mechanism as an interlocking mechanism is configured.

  By moving one of the first and second side regulating plates 2 and 4 in a direction (vertical direction in FIG. 1) perpendicular to the sheet feeding direction, the regulating plates 2 and 4 are separated from or approach each other. It can be moved by the same amount of movement.

  The sheet feeding device 11 includes a size detection unit that detects the size of the sheet S stored in the cassette body 1a. The size detection unit includes, for example, two size detection levers and a switch unit having, for example, four button switches. When an ON / OFF signal from the button switch of the switch unit is sent to the control unit 14, the control unit 14 determines the size of the sheet S stored in the cassette body 1a based on this signal.

  Then, when setting the sheet S in the sheet cassette 1, the first side regulating plate 2 is moved to a position that matches the width of the sheet S. Then, the pinion gears 7a and 7a are rotated by the movement of the first side restricting plate 2, and the second side restricting plate 4 is opposite to the first side restricting plate 2 through the pinion gear 7a and the rack portion 4a in accordance with the rotation. The first side regulating plate 2 moves in the same direction as the distance moved.

  As described above, after the first side regulating plate 2 and the second side regulating plate 4 are moved in accordance with the width of the sheet S, the sheet S is stacked on the lifter 8 and the sheet cassette 1 is mounted on the apparatus main body 101.・ Store. When the sheet cassette 1 is mounted on the apparatus main body 101, the lifter 8 raises the uppermost sheet to a position where the uppermost sheet can be fed by a lift-up mechanism (not shown), and stops to prepare for the start of feeding.

  Next, with reference to FIG. 2 (a), (b) and FIG. 3 (a)-(d), the structure of the 1st side control board 2, the 1st stopper 3, and the 2nd stopper 5 which concern on this embodiment. Will be described in detail. 2A and 2B are perspective views showing the configuration of the first side regulating plate in the present embodiment, and FIGS. 3A to 3D are operations of the first and second stoppers in the present embodiment. FIG.

  An operation lever 6 as a lock operation member is pivotally supported on the first side restricting plate 2 so as to be rotatable about the rotation center 6d. The cassette body 1 a below the operation lever 6 is provided with a first locking portion 19 for locking the first side regulating plate 2. The 1st latching | locking part 19 is a reference | standard part used as the reference | standard for fixing the 1st and 2nd side regulation plates 2 and 4, and is being fixed and provided in the cassette main body 1a.

  Further, the second side regulating plate 4 is provided with a second locking portion 20 for locking the second side regulating plate 4. The second locking portion 20 is supported by a support portion 4 b formed so as to extend from the rack portion 4 a of the second side regulating plate 4 and reach the lower portion of the operation lever 6. The rack portion 4a of the second side regulating plate 4 is formed long so as to extend from the second side regulating plate 4 and reach the lower part of the operation lever 6, and is provided with a second locking portion 20. This 2nd latching | locking part 20 is comprised as an extension part extended from the 2nd side control board 4 to the position (refer FIG. 1) adjacent to the 1st latching | locking part 19. As shown in FIG. In this way, the second locking portion 20 is supported by the support portion 4b that is integrally extended from the second side restriction plate 4, and the support portion 4b is extended from the rack portion 4a of the second side restriction plate 4. Is provided.

  A first stopper 3 is supported on the first side regulating plate 2 in a state of being biased downward by a stopper spring 9a. The first side regulating plate 2 is fixed by pressing the first stopper 3 against the first locking portion 19 provided in the cassette body 1a by the biasing force of the stopper spring 9a.

  A second stopper 5 is supported on the first side regulating plate 2 in a state of being biased downward by a stopper spring 9b. The second stopper 5 is pressed against the second locking portion 20 provided on the second side restricting plate 4 by the biasing force of the stopper spring 9b, so that the position of the second side restricting plate 4 is moved to the first side restricting plate 2. Held against.

  The side regulating plates 2 and 4 are moved toward and away from the side regulating plates 2 and 4 by the operating lever 6, the first locking portion 19, the second locking portion 20, the first stopper 3 and the second stopper 5. The locking means for integrally locking at a desired position) 4 is fixed. The first stopper 3 and the second stopper 5 are connected to the first locking portion (reference member) in conjunction with the turning operation of the operation lever (lock operation member) 6 at the contact / separation movement position moved together with the first side restriction plate 2. Part) 19 and the second engaging part (extension part) 20 constitute an unlocking member capable of simultaneously locking and releasing.

  As shown in FIGS. 3A and 3B, a hook 6 a is provided in the vicinity of the rotation center 6 d of the operation lever 6. A hook 6b is provided in the vicinity of the extension line of the rotation center 6d of the operation lever 6 as shown in FIGS. 3 (c) and 3 (d).

  When the operation lever 6 is rotated in the direction of arrow A, the hook 6a rotates while engaging with the engaging portion 3c of the first stopper 3, as shown in FIGS. 2 (b) and 3 (b). Thus, the first stopper 3 is raised, and the locking portion 3 a at the lower end of the first stopper 3 is separated from the first locking portion 19.

  Similarly, as shown in FIG. 2B and FIG. 3D, the hook 6b rotates while engaging with the engaging portion 5c of the second stopper 5 to raise the second stopper 5, 2 The locking portion 5 a at the lower end of the stopper 5 is separated from the second locking portion 20 provided on the second side regulating plate 4.

  As a result, the first side regulating plate 2 and the second side regulating plate 4 can be moved in the width direction orthogonal to the sheet feeding direction d.

  Thereafter, when the operation lever 6 is released by releasing the hand, the urging force of the stopper springs 9a and 9b is applied to the operation lever 6 via the engaging portion 3c of the first stopper 3 and the engaging portion 5c of the second stopper 5. By doing so, it is rotated in the direction of arrow B.

  For this reason, the 1st stopper 3 is pressed against the 1st latching | locking part 19 of the cassette main body 1a with the urging | biasing force of the stopper spring 9a, and the 1st side control board 2 is fixed to the cassette main body 1a. At the same time, the second stopper 5 is pressed against the second locking portion 20 of the cassette body 1a by the biasing force of the stopper spring 9b, and the second side restricting plate 4 is inserted into the cassette body via the first locking portion 19 as a reference portion. It is positioned with respect to the first side regulating plate 2 fixed to 1a.

  With the above configuration, the first side restricting plate 2 and the second side restricting plate 4 can be moved and fixed only by rotating the operation lever 6, so that it is very easy to perform the sheet The positional deviation in the width direction can be eliminated and the accuracy of the image writing position can be improved.

  Next, the structure of the stopper locking portion will be described in detail with reference to FIG. 4A and 4B are detailed views showing the locking portions 3a and 5a of the first and second stoppers 3 and 5 in the present embodiment. Since the structure of the latching | locking part 3a and the latching | locking part 5a and the structure of the 1st latching | locking part 19 and the 2nd latching | locking part 20 corresponding to these are respectively substantially the same, FIG. 4 (a), (b) Both will be described on the same drawing.

  The locking portion 3a at the lower end of the first stopper 3 is a first locking portion 19 provided in the cassette body 1a, and the locking portion 5a at the lower end of the second stopper 5 is a second locking portion 20 provided in the cassette body 1a. And the chevron shape (uneven shape) of each of them is engaged to engage with each other.

  As shown in FIGS. 4A and 4B, the first and second locking portions 19 and 20 have a sawtooth shape in which the vertical surface portions 19a and 20a and the slope portions 19b and 20b are combined. The locking portions 3a and 5a have a sawtooth shape in which the vertical surface portions 3d and 5d and the slope portions 3e and 5e are combined.

  The first locking portion 19 as the extension portion and the second locking portion 20 as the reference portion are each formed as a first sawtooth portion. The first stopper 3 and the second stopper 5 as locking release members have locking portions 3a and 5a as second sawtooth portions that can be locked with the first sawtooth portion.

  The locking portions 3a and 5a as the second sawtooth portions can move over the locking portions 19 and 20 in the direction of narrowing the interval between the side regulating plates 2 and 4, and can be moved. It is formed so that it cannot move in the direction of widening the interval between 2 and 4 (impossible to move).

  That is, when the first side regulating plate 2 and the second side regulating plate 4 are moved in the direction of narrowing the width, the first side regulating plate 2 is moved in the direction of the arrow B without operating the operation lever 6 (FIG. 2). (B), the operation which only pushes to Fig.4 (a)) is performed. Thereby, a force in the direction of arrow C (FIG. 4A) acts on the locking portion 3a of the first stopper 3 and the locking portion 5a of the second stopper 5, respectively.

  Therefore, the slope portions 3e and 5e of the first stopper 3 and the second stopper 5 are slid and pushed up with respect to the slope portions 19b and 20b of the first and second locking portions 19 and 20, respectively. Thereby, as shown in FIG. 4B, the locked state (locked state) between the first and second stoppers 3 and 5 and the locking portions 19 and 20 is released, so that the operation lever 6 is not operated. In addition, the width of the first side regulating plate 2 and the second side regulating plate 4 can be easily reduced.

  On the other hand, when the first side restricting plate 2 and the second side restricting plate 4 are moved in the direction of widening the width, the first side restricting plate 2 is moved in the direction of arrow A without operating the operation lever 6 (FIG. 2 ( Even if it pushes to b)), the 1st side regulation board 2 does not move. That is, since the vertical surface portions 3d and 5d of the first stopper 3 and the second stopper 5 are in contact with the vertical surface portions 19a and 20a of the first and second locking portions 19 and 20, the mutual engagement is not released. The side regulating plates 2 and 4 cannot be expanded.

  However, by applying the force in the direction of arrow A (FIG. 4A) to the first side regulating plate 2 while rotating the operating lever 6 in the direction of arrow A (FIG. 2B), the stopper The respective locking portions 3a and 5a of 3 and 5 are lifted off from the first and second locking portions 19 and 20, respectively (FIG. 4B). As a result, the lock between the first and second stoppers 3 and 5 and the first and second locking portions 19 and 20 is released, so that the first side regulating plate 2 and the second side regulating plate 4 The width can be increased.

  Thus, it can move without operating the operating lever 6 in the direction of narrowing the width of the side regulating plates 2, 4, and presses the operating lever 6 in the direction of widening the side regulating plates 2, 4. It can be moved by moving the first side regulating plate 2 while operating. Thus, the side regulating plates 2 and 4 can be easily moved by one operation.

  In addition, the operation lever 6 must be pressed in the direction in which the side regulating plates 2 and 4 are expanded. Therefore, it is possible to avoid the following inconvenience that is likely to occur when the sheet cassette 1 with the sheet S fully loaded on the intermediate plate 22 is strongly inserted into the apparatus main body 101. That is, in this case, the inertial force due to the acceleration when the sheet cassette 1 is inserted acts on the sheet S, and the inertial force acting on the sheet S becomes an impact when the insertion is completed, and the direction in which the side regulating plates 2 and 4 spread (arrows). A force is applied in the (A direction). However, since the lock between the first and second stoppers 3 and 5 and the first and second locking portions 19 and 20 is not released, it is possible to reliably prevent the inconvenience that the side restricting plates 2 and 4 spread unintentionally. can do.

  The sheet cassette 1 having a simple configuration as described above can be applied to an apparatus for feeding and conveying sheets, such as an image forming apparatus, a printer, and a FAX, in the same manner as a conventional sheet cassette. In addition, the present invention is not limited to a sheet cassette, and may be applied as a simple configuration for fixing a restricting member as long as it accommodates things and has a restricting member.

  DESCRIPTION OF SYMBOLS 1 ... Sheet cassette, 1a ... Cassette main body, 2 ... 1st side control member (1st side control board), 3, 5, 6, 19, 20 ... Lock means (lock release member (1st stopper)), lock Release member (second stopper), lock operation member (operation lever), reference portion (first saw tooth portion, first locking portion), extension portion (first saw tooth portion, second locking portion)), 2a , 4a ... rack portion, 3a, 5a ... second saw tooth portion (locking portion), 4 ... second side restricting member (second side restricting plate), 4b ... support portion, 7a, 7a ... gear member (pinion gear) DESCRIPTION OF SYMBOLS 100 ... Image forming apparatus 102 ... Image forming part S ... Sheet

Claims (6)

A cassette body capable of stacking sheets;
A first side regulating member and a second side regulating member which are supported by the cassette body and are movable in conjunction with each other in the direction of contact and separation in order to regulate both ends of the sheets stacked on the cassette body;
Locking means for integrally locking the first and second side regulating members,
A sheet cassette characterized by that. The locking means is
A lock operation member provided on the first side regulating member so as to be rotatable;
A first locking portion provided in the cassette body;
A second locking portion extended from the second side regulating member to a position adjacent to the first locking portion;
A locking release member that can be locked and released simultaneously with the first locking portion and the second locking portion in conjunction with the rotation operation of the locking operation member;
The sheet cassette according to claim 1. Each of the first locking portion and the second locking portion has a first sawtooth portion,
The locking release member has a second sawtooth portion that can be locked with the first sawtooth portion,
The second sawtooth portion is
It can move over the first sawtooth portion in the direction of narrowing the interval between the first and second side regulating members, and cannot move in the direction of widening the interval between the first and second side regulating members. Formed in the
3. A sheet cassette according to claim 2, wherein The first locking portion is fixed to the cassette body, and the second locking portion is supported by a support portion integrally extending from the second side regulating member.
3. A sheet cassette according to claim 2, wherein An interlocking mechanism that interlocks the first side restricting member and the second side restricting member is provided, and the interlocking mechanism includes a rack portion provided in each side restricting member and a gear member that meshes with the rack portion. The support portion is provided extending from the rack portion of the second side regulating member.
The sheet cassette according to claim 4, wherein A sheet cassette according to any one of claims 1 to 5,
An image forming unit that forms an image on a sheet fed from the sheet cassette,
An image forming apparatus.

Images