JP2009292589A - Sheet feeding device and image forming device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To restrain sheets with all sizes to be used with a single rear end restraining member with an inexpensive constitution, and obtain a stable feeding performance. <P>SOLUTION: This sheet feeding device has a loading platform 1, a feeding roller 5 for feeding a sheet loaded on the loading platform 1, an intermediate plate 4 for rotating the sheet loaded on the loading platform 1 in contact with or away from the feeding roller 5, and a rear end restraining plate 2 installed to the loading platform 1, movable forward and backward along the sheet feeding direction, and restraining the upstream end of the sheet in the sheet feeding direction. The loading platform 1 has a rail 8 for guiding the rear end restraining plate 2 in the sheet feeding direction. The rail 8 has guide grooves 8a, 8b engaged with a guide pin 2a provided to the rear end restraining plate 2 and guiding it along the sheet feeding direction. Regarding widths h1, h2 in a sheet loading direction of the guide grooves 8a, 8b, the width h2 of a second area on a downstream in the sheet feeding direction is made wider than the width h1 of a first area on an upstream in the sheet feeding direction. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a sheet feeding apparatus that feeds sheets one by one and an image forming apparatus including the sheet feeding apparatus.

  Conventionally, an image forming apparatus using an electrophotographic method forms an electrostatic latent image on the surface of a photosensitive drum by a laser beam emitted from an optical scanner in an image forming unit, and the electrostatic latent image is a developer. A visible image is developed with toner or the like. The image (toner image) developed on the photosensitive drum is transferred by a transfer roller to the sheet fed from the sheet feeding device. The sheet on which the image is transferred is heated and pressed by a fixing device, and is fixed to the sheet. The fixed sheet is discharged and stacked on a discharge tray by a pair of discharge rollers.

  Here, the sheet feeding apparatus will be described. The sheet feeding apparatus includes a stacking table on which sheets are stacked and a middle plate that supports the leading end side of the sheets. In response to the start signal of the image forming operation, the feeding roller starts to rotate, and in response to the rotation of the feeding roller, the substantially horizontal middle plate is pushed upward and tilted, and the sheets stacked on the middle plate are Abuts on the feeding roller. Then, the sheet is fed downstream by the rotation of the feeding roller, and only one sheet is separated by the feeding roller and the separation pad in contact therewith. The separated sheet is sent to the transfer unit where the photosensitive drum and the transfer roller face each other in the image forming unit. The feeding roller feeds the sheet and stops rotating after one or more rotations. At this time, a cam arranged coaxially with the feeding roller pushes the middle plate downward, and the sheets stacked on the middle plate are separated from the feeding roller, and in that state, the next image forming operation is awaited. . Sheet replenishment and setting to the sheet feeding apparatus are performed in this state.

  In the sheets stacked on the stacking base, the rear end, which is the end on the upstream side in the feeding direction, is regulated by the rear end regulating plate. The rear end regulating plate regulates the sheet so that the sheet does not shift later when the sheet is fed by the feeding roller. The rear end regulating plate is slidably provided along the slide rail provided on the stacking table according to the size in the sheet feeding direction. For this reason, in the rear end regulating plate, the force that regulates the movement of the sheet in the feeding direction is due to the sliding frictional force with the slide rail. Thus, the rear end regulating plate held so as to be movable can stably feed even various sizes of sheets.

JP 2004-224463 A

  In the conventional example, when the image forming operation is started, the substantially horizontal intermediate plate is pushed upward and tilted to bring the sheet into contact with the feeding roller. At this time, if the size of the sheet set on the loading table is large in the feeding direction, the upstream side in the feeding direction is along the substantially horizontal loading table, so that the trailing edge is substantially vertical by the trailing edge regulating plate. Regulated by

  On the other hand, when the size of the sheet in the feeding direction is small, the sheet pushed upward by the middle plate may be lifted from the stacking table by the stiffness of the sheet. As a result, the sheet tends to move upstream in the direction opposite to the feeding direction according to the inclination of the intermediate plate. For this reason, the trailing edge regulating plate is pushed back upstream in the feeding direction by the sheet, or the leading edge of the sheet regulated by the trailing edge regulating plate is displaced in the nip direction between the feeding roller and the separation pad.

  When the rear end regulating plate is pushed back upstream, the uppermost sheet does not reach the nip between the feeding roller and the separation pad, and a feeding failure such that the feeding roller cannot feed the sheet occurs. Also, if the leading edge of the sheet regulated by the trailing edge regulating plate is displaced in the nip direction between the feeding roller and the separation pad, a number of sheets that cannot be separated will enter the nip, resulting in poor feeding such as double feeding of sheets. appear.

  In order to cope with a sheet having a small size in the feeding direction as described above, Patent Document 1 discloses a manual tray portion that is inclined so that the sheet does not return to the upstream side in the feeding direction without restricting the trailing edge of the sheet. The structure which has is disclosed. However, in Patent Document 1, only a sheet having a small size in the feeding direction is fed from the manual feed tray unit, and a sheet having a large size in the feeding direction is fed from a main tray unit different from the manual feed tray unit. It is configured to do. Further, in Patent Document 1, both the feeding from the manual feed tray and the feeding from the main tray share the same feeding roller and separation pad. There was a problem that multiple sheets could not be fed.

  An object of the present invention is to restrict the sheets of all sizes to be used with a single rear end regulating member and obtain a stable feeding performance with an inexpensive configuration.

  In order to achieve the above object, a representative configuration of the present invention includes a sheet stacking table for stacking sheets, a feeding roller for feeding the sheets stacked on the sheet stacking table, and the sheet stacking table. A rotating member that rotates so as to contact or separate the sheet stacked on the sheet feeding roller, and a sheet feeding direction that is provided on the sheet stacking table and can be reciprocated along the sheet feeding direction. A sheet feeding device having a trailing edge regulating member that regulates the upstream end, wherein the sheet stacking base includes a rail that guides the trailing edge regulating member in a sheet feeding direction, A guide groove that engages and guides an engagement portion provided in the rear end regulating member is provided in the sheet feeding direction, and the width of the guide groove in the sheet stacking direction is set to a first area upstream of the sheet feeding direction. Against the sheet from the first region Characterized in that widening the second region of the feeding direction downstream side.

  According to the present invention, the width of the guide groove is made wider on the downstream side in the sheet feeding direction than on the upstream side in the sheet feeding direction, so that the trailing edge regulating member according to the reduction in the size in the sheet feeding direction Can tilt. As a result, even if the sheet is brought into contact with or separated from the feeding roller by the rotating member, the sheets of all sizes to be used can be regulated by the single rear end regulating member and can be stably fed. The feeding performance can be obtained and an inexpensive configuration can be taken.

  Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the drawings. However, the dimensions, materials, shapes, and relative arrangements of the components described in the following embodiments should be changed as appropriate according to the configuration of the apparatus to which the present invention is applied and various conditions. Therefore, unless specifically stated otherwise, the scope of the present invention is not intended to be limited thereto.

[First Embodiment]
The overall configuration of the image forming apparatus including the sheet feeding device will be described with reference to FIGS. 1 and 2. FIG. 1 is a schematic cross-sectional view illustrating an overall configuration of an image forming apparatus including a sheet feeding device. FIG. 2 is a perspective view illustrating a schematic configuration of the sheet feeding apparatus.

  In FIG. 1, A is an image forming apparatus main body, and B is a sheet feeding apparatus provided in the image forming apparatus main body A. An image forming unit C is provided in the image forming apparatus main body A, and forms an image by an electrophotographic method. The image forming unit C includes a photosensitive drum 10 that forms a toner image, an optical scanner 19 that irradiates the photosensitive drum 10 with light corresponding to an image signal, and a transfer roller 11 that transfers the toner image formed on the photosensitive drum 10 to a sheet S. Etc.

  In the image forming unit C, an electrostatic latent image is formed on the surface of the photosensitive drum 10 as an image carrier by the laser beam 20 emitted from the optical scanner 19, and the electrostatic latent image is developed with toner as a developer. To visualize it. The image (toner image) developed on the photosensitive drum 10 is transferred by the transfer roller 11 to the sheet S fed from the sheet feeding device B. The sheet S on which the image is transferred is heated and pressed by the fixing device 12 and is fixed to the sheet S. The fixed sheets S are sequentially discharged and stacked on the discharge tray 17 by the discharge roller pair 16.

  Here, the sheet feeding apparatus B will be described with reference to FIGS. 1 and 2. In the sheet feeding device B, the feeding roller 5 starts to rotate in response to the start signal of the image forming operation. Cams 18 are attached to both ends of the feeding roller 5. When the feeding roller 5 starts to rotate, the cams 18 attached to both ends of the feeding roller 5 remove the cam 4a of the middle plate (rotating member) 4, and the middle plate 4 is lifted upward by the spring 7. The sheet S stacked on the plate 4 contacts the feeding roller 5. Then, the sheet S is conveyed downstream by the rotation of the feeding roller 5, and only one sheet is separated by the feeding roller 5 and the separation pad 6 in contact therewith. The separated sheet S is sent by the conveying roller pair 13 to the transfer unit where the photosensitive drum 10 and the transfer roller 11 are opposed to each other in the image forming unit.

  The feeding roller 5 feeds the sheet S and stops rotating after one rotation or more. At this time, the cam 18 provided at the end of the feeding roller 5 pushes down the cam 4a at the end of the intermediate plate 4 downward. As a result, the sheet S stacked on the intermediate plate 4 is separated from the feeding roller, and in this state, the next image forming operation is awaited. The replenishment and setting of the sheet S to the sheet feeding apparatus can be performed in this state.

  The sheet feeding device has the feeding roller 5 and the intermediate plate 4 as described above. The feeding roller 5 is a feeding roller for feeding the sheets S stacked on the sheet stacking table 1. The intermediate plate 4 is a rotating member that rotates so that the sheets S stacked on the sheet stacking table 1 are brought into contact with or separated from the feeding roller 5.

  The sheet feeding apparatus further includes a side regulating plate 3 and a rear end regulating plate 2 as a rear end regulating member. The side regulating plate 3 is provided on the sheet stacking table 1 and is provided so as to be movable in the width direction of the sheet S in order to regulate the end portion in the width direction orthogonal to the feeding direction of the sheet S. The side regulating plate 3 regulates the sheet S so that it does not shift left and right (width direction) when the feeding roller 5 feeds it. Further, the rear end regulating plate 2 is provided on the sheet stacking table 1 and can be reciprocated in the sheet S feeding direction in order to regulate the sheet rear end which is the upstream end in the sheet S feeding direction. Is provided. The rear end regulating plate 2 regulates the sheet S so that it does not shift later when the feeding roller 5 feeds the sheet.

  The side regulating plate 3 and the rear end regulating plate 2 held so as to be movable as described above enable stable feeding even for sheets of various sizes.

  The sheet stacking table 1 has a slide rail 8 that guides the trailing edge regulating plate 2 in the sheet S feeding direction. The rail 8 and the rear end regulating plate 2 engaged with the rail 8 will be described in detail with reference to FIGS. FIG. 3 is a perspective view showing the shape of the rail engaging portion of the rear end regulating plate 2. FIG. 4 is a cross-sectional view showing the shape of the rail engaging portion of the rear end regulating plate 2.

  As shown in FIG. 3, the slide rail 8 provided on the sheet stacking table 1 is close to the feeding roller 5 so that one rear end regulating plate 2 can correspond to all sizes of sheets to be used. It extends. The rail 8 has guide grooves 8a and 8b that engage with and guide guide pins (engaging portions) 2a provided on the rear end regulating plate 2 in the sheet feeding direction. Here, the area that regulates the trailing edge of the large size sheet is defined as the first area upstream of the sheet feeding direction, and the area downstream of the first area in the sheet feeding direction is regulated of the trailing edge of the small size sheet. This is the second area. Of the guide grooves 8a and 8b of the rail 8, the guide groove 8a is the first region, and the guide groove 8b is the second region downstream of the first region. Then, the widths h1 and h2 of the guide grooves 8a and 8b in the sheet stacking direction become the second area downstream of the first area with respect to the width h1 of the guide groove 8a serving as the first area. The width h2 of the guide groove 8b is increased.

  More specifically, in the first region in which the groove width of the slide rail 8 regulates the rear end of the large size sheet, the width dimension of the guide groove 8a is made substantially the same as the guide pin 2a of the rear end regulating plate 2, and the rear end The restriction plate 2 is slidably held vertically. Further, in the second region for restricting the rear end of the small-sized sheet, the width dimension of the guide groove 8b is made wider than the guide pin 2a of the rear end restricting plate 2.

  In addition, the rear end regulating plate 2 has a pressurizing spring (biasing member) 2b that urges the rear end regulating plate 2 to tilt until the guide pin 2a comes into contact with the guide groove 8b and stops in the second region. ing. Here, the pressurizing spring 2 b is formed integrally with the rear end regulating plate 2.

  As a result, at the position where the small-size sheet is regulated, the rear end regulating plate 2 is tilted until the guide pin 2a of the rear end regulating plate 2 comes into contact with the wall on one side of the guide groove 8b by the force of the pressurizing spring 2b. The rear end regulating plate 2 is held in this posture.

  Further, as described above, by forming the spring 2b as the urging member integrally with the rear end regulating plate 2, an inexpensive configuration can be taken.

  The guide grooves 8a and 8b having different widths are smoothly connected by slopes. As a result, the position corresponding to the size and the tilt angle corresponding to the size can be set smoothly without catching or rattling the rear end regulating plate 2. In addition, this time, the large-size sheet and the small-size sheet have been described. However, depending on the size of the sheet, the width of several positions may be finely changed so that the inclination angle of the rear end regulating plate can be set according to the size. .

  As described above, the widths h1 and h2 of the guide grooves 8a and 8b are made wider on the downstream side (h2) in the sheet feeding direction than on the upstream side (h1) in the sheet feeding direction. The rear end restricting plate 2 can be tilted as the angle becomes smaller. Thereby, even if the sheet S is not stacked along the middle plate 4 due to its own stiffness, the force for pushing the rear end regulating plate 2 backward does not work. Further, the force by which the upper stacked sheet is pushed out to the nip between the feeding roller 5 and the separation pad 6 does not work. In other words, even if the sheet is brought into contact with or separated from the feeding roller 5 by the intermediate plate 4, sheets of all sizes to be used can be regulated by the single rear end regulating plate 2, and stable. The feeding performance can be obtained, and an inexpensive configuration can be taken.

  Further, as shown in FIG. 4, the rear end regulating plate 2 has a friction member 2c. The friction member 2c abuts on the guide groove 8b when the rear end regulating plate 2 is tilted, and prevents the rear end regulating plate 2 from moving upstream in the sheet feeding direction due to the frictional force thereof.

  The friction member 2 c is formed integrally with the rear end regulating plate 2. The friction member 2c has a weak frictional force when the trailing end regulating plate 2 is moved in the sheet feeding direction, and the frictional force is large when the trailing end regulating plate 2 is moved in a direction opposite to the sheet feeding direction.

  As a material of the friction member 2c, a method of obtaining a frictional force by an elastic member such as rubber or a method of obtaining a high frictional force by reducing a contact area by surface processing such as embossing is used.

  The rear end regulating plate 2 is tilted by the pressure of the spring 2b in the second region (the guide groove 8b having the width h2), and the guide pin 2a is held in contact with the guide groove 8b by the friction member 2c and the stopper portion 2d. The

  When the rear end regulating plate 2 is moved in the direction of arrow M in order to set the sheet, the frictional force of the friction member 2c becomes weak, and if it is about to be moved in the direction of arrow N during sheet feeding, the frictional force becomes large and difficult to move. . Thereby, an apparatus with good usability and feeding performance can be obtained.

  Further, as described above, by forming the friction member 2c integrally with the rear end regulating plate 2, a further inexpensive configuration can be taken.

  1, 5 and 6 are views showing a state where a small-sized sheet is set. FIG. 5 is a perspective view in which a small-size sheet is set, and FIG. 6 is a perspective view in a state in which the intermediate plate is raised when the small-size sheet is fed. 7 to 9 are views showing a state in which a large size sheet is set. FIG. 7 is a cross-sectional view of the image forming apparatus when the rear end regulating plate is set at the position of a large sheet. FIG. 8 is a perspective view in which a large-sized sheet is set. FIG. 9 is a perspective view showing a state in which the intermediate plate is raised when feeding a small-sized sheet.

[Second Embodiment]
In the first embodiment described above, the configuration in which a small-size sheet to a large-size sheet are stacked on one flat sheet stacking table is illustrated, but the present invention is not limited to this. In the second embodiment, in order to reduce the size of the product (image forming apparatus or sheet feeding apparatus), the sheet stacking base is placed in a portion protruding from the image forming apparatus main body (second sheet stacking base) and the apparatus main body. It is divided into a part that fits (first sheet stacking base). As a result, when a large size sheet is used, the sheet stacking table can be enlarged to stack the sheet, and when not used, the sheet stacking table can be decreased to reduce the installation area.

  Hereinafter, description will be made with reference to FIGS. 10 to 12. FIG. 10 is a perspective view of a sheet feeding apparatus having a foldable sheet stacking table. FIG. 11 is a cross-sectional view of the image forming apparatus with the sheet stacking table opened. FIG. 12 is a cross-sectional view of the image forming apparatus with the sheet stacking table folded.

  As shown in the figure, the sheet stacking table 21 for stacking small-sized sheets to large-sized sheets corresponds to the first sheet stacking table 21a fixed to the apparatus main body and the length in the sheet feeding direction. The second sheet stacking table 21b is movably provided in the apparatus main body so as to move. Here, the second sheet stacking base 21 b is a portion protruding from the image forming apparatus main body A, and is provided so as to be foldable and housed in the image forming apparatus main body A.

  A rail 22 for guiding the trailing edge regulating plate 2 in the sheet feeding direction is provided from the first sheet stacking table 21a to the second sheet stacking table 21b. Then, the width h2 of the guide groove 22a of the rail 22 provided on the first sheet stacking base 21a is made wider than the width h1 of the guide groove 22b of the rail 22 provided on the second sheet stacking base 21b. Yes.

  Here, the side regulating plate 3 is movably provided on the first sheet stacking base 21a. On the other hand, since the rail 22 is provided from the first sheet stacking table 21a to the second sheet stacking table 21b, the rear end regulating plate 2 has the first sheet stacking table 21a and the second sheet stacking table 21b. It is possible to move to both. Other configurations are the same as those of the above-described embodiment, and members having the same function are denoted by the same reference numerals and description thereof is omitted.

  By using the above configuration, even in the case of a sheet feeding device that opens and closes a sheet stacking base, a small-size sheet can be regulated by a rear end regulating plate that regulates a large-size sheet, as in the above-described embodiment. . For this reason, it is possible to obtain a stable feeding performance by changing the angle of the rear end regulating plate according to the size with an inexpensive configuration. Furthermore, the size can be further reduced as compared with the above-described embodiment.

[Other Embodiments]
In the above-described embodiment, the configuration in which the spring 2b is integrally formed as the urging member that urges the rear end regulating plate 2 is illustrated, but is not limited thereto. For example, as shown in FIG. 13, a cylindrical stopper 2 e that can come into contact with the upper surface of the sheet stacking table 1 may be integrated with the rear end regulating plate 2. In this case, the rotational force acts on the center of gravity of the rear end regulating plate without applying a rotational force such as the spring 2b. Even if comprised in this way, the effect similar to embodiment mentioned above is acquired, and it can be set as a cheaper structure.

  In the above-described embodiment, the printer is exemplified as the image forming apparatus. However, the present invention is not limited to this, and may be another image forming apparatus such as a scanner, a copier, and a facsimile machine. Alternatively, the image forming apparatus may be another image forming apparatus that combines these functions. The same effect can be obtained by applying the present invention to a sheet feeding apparatus used in these image forming apparatuses.

  In the above-described embodiment, the sheet feeding apparatus integrally included in the image forming apparatus is exemplified, but the present invention is not limited to this. For example, a sheet feeding device that is detachable from the image forming apparatus may be used, and the same effect can be obtained by applying the present invention to the sheet feeding device.

  In the embodiment described above, the sheet feeding apparatus that feeds a sheet such as a recording sheet as a recording target is exemplified, but the present invention is not limited to this. For example, the same effect can be obtained even if the present invention is applied to a sheet feeding apparatus that feeds a sheet such as a document to be read.

1 is a schematic cross-sectional view illustrating an overall configuration of an image forming apparatus including a sheet feeding device according to a first embodiment. 1 is a perspective view illustrating a schematic configuration of a sheet feeding apparatus according to a first embodiment. 1 is a perspective view of a sheet feeding apparatus according to a first embodiment. Sectional drawing which shows the shape of the rail engaging part of the rear-end regulation board which concerns on 1st Embodiment. The perspective view which shows the state which set the small sized sheet | seat to the sheet feeding apparatus which concerns on 1st Embodiment. The perspective view which shows the state which set the small sized sheet | seat to the sheet feeding apparatus which concerns on 1st Embodiment. 1 is a schematic cross-sectional view of an image forming apparatus according to a first embodiment. The perspective view which shows the state which set the large sized sheet | seat in the sheet feeding apparatus which concerns on 1st Embodiment. The perspective view which shows the state which set the large sized sheet | seat in the sheet feeding apparatus which concerns on 1st Embodiment. FIG. 7 is a perspective view of a sheet feeding apparatus having a foldable sheet stacking table according to a second embodiment. Sectional drawing of the image forming apparatus of the state which opened the sheet | seat stacking table concerning 2nd Embodiment Sectional drawing of the image forming apparatus of the state which folded the sheet | seat stacking table concerning 2nd Embodiment Sectional drawing of the principal part of the sheet feeding apparatus which concerns on other embodiment

Explanation of symbols

S ... sheets h1, h2 ... width 1 ... sheet stack 10 ... photosensitive drum 11 ... transfer roller 13 ... conveying roller pair 18 ... cams 1a, 1b ... groove 2 ... rear end regulating plate 2a ... guide pin 2b ... pressure spring 2c ... friction member 2d ... stopper 2e ... stopper 3 ... side regulating plate 4 ... intermediate plate 4a ... cam 5 ... feeding roller 6 ... separation pad 7 ... spring 8 ... slide rails 8a and 8b ... guide groove 21 ... sheet stacking base 21a ... 1st sheet stacking table 21b ... 2nd sheet stacking table 22 ... Rails 22a, 22b ... Guide grooves

Claims (8)

A sheet stacking table on which sheets are stacked, a feed roller for feeding the sheets stacked on the sheet stacking table, and a sheet stacked on the sheet stacking table is brought into contact with or separated from the feed roller A sheet having a rotating member that rotates, and a rear end regulating member that is provided on the sheet stacking table and that can reciprocate along the sheet feeding direction and regulates an upstream end in the sheet feeding direction. In the feeding device,
The sheet stacking base has a rail for guiding the trailing edge regulating member in a sheet feeding direction,
The rail has a guide groove that engages and guides an engagement portion provided in the trailing end regulating member in the sheet feeding direction, and the width of the guide groove in the sheet stacking direction is set on the upstream side in the sheet feeding direction The sheet feeding apparatus according to claim 1, wherein the second area on the downstream side in the sheet feeding direction is wider than the first area with respect to the first area. The sheet stacking base includes a first sheet stacking base fixed to the apparatus main body, and a second sheet stacking base movably provided on the apparatus main body so as to move in accordance with the length in the sheet feeding direction. And having
The rail is provided from the first sheet stacking table to the second sheet stacking table, and the first sheet stacking is performed with respect to a width of a guide groove included in the rail provided on the second sheet stacking table. The sheet feeding device according to claim 1, wherein a width of a guide groove included in a rail provided on the table is widened.   The width of the guide groove of the rail is substantially the same as the engaging portion of the rear end regulating member in the first region, and wider than the engaging portion of the rear end regulating member in the second region. The sheet feeding apparatus according to claim 1, wherein the sheet feeding apparatus is a sheet feeding apparatus.   The rear end regulating member includes a biasing member that biases the rear end regulating member to tilt until the engagement portion stops contacting the guide groove in the second region. The sheet feeding apparatus according to any one of 1 to 3.   The sheet feeding device according to claim 4, wherein the urging member is formed integrally with the rear end regulating member.   The trailing edge regulating member includes a friction member that abuts on the guide groove when the trailing edge regulating member is inclined and prevents the trailing edge regulating member from moving upstream in the sheet feeding direction. The sheet feeding apparatus according to claim 4 or 5.   The friction member is formed integrally with the trailing edge regulating member, and when the trailing edge regulating member is moved in the sheet feeding direction, the friction force is weakened, and the trailing edge regulating member is in a direction opposite to the sheet feeding direction. The sheet feeding apparatus according to claim 6, wherein the friction force increases when the sheet is moved to the position. An image forming apparatus comprising: an image forming unit that forms an image on a sheet; and a sheet feeding device that feeds the sheet to the image forming unit.
An image forming apparatus comprising the sheet feeding device according to claim 1 as the sheet feeding device.

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