Sheet storage device

Abstract

To provide a sheet storage device capable of suppressing adjustment of a cassette storage position.SOLUTION: A sheet storage device includes a case, a cassette, a guide mechanism, a cassette body, a cover, and a biasing member. The cassette is moved to a pull-out side in an inserting / removing direction, and gets out of the case. On the contrary, the cassette is moved to an insertion side opposite to the pull-out side in the inserting / removing direction, and is settled in the case. The guide mechanism guides the cassette to a position where the cassette is settled in the case. The cassette body is included in the cassette, and can store a sheet. The cover is included in the cassette, and is arranged on the pull-out side of the cassette body. The cover is relatively movable in the inserting / removing direction with respect to the cassette body. When the cassette is settled in the case, the cover can be brought into contact with the case. The biasing member is included in the cassette, and biases the cover to the insertion side toward the cassette body.SELECTED DRAWING: Figure 3

Description

Technical Field

[0001] Embodiments of the present invention relate to a sheet storage device.

Background Art

[0002] The sheet storage device has a cassette. The cassette is housed in an image forming apparatus and supplies sheets to the image forming apparatus. With the cassette housed in the image forming apparatus, the position of the cover of the cassette is adjusted. There is a need for a sheet storage device that can suppress the position adjustment of the cover.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] The problem to be solved by the present invention is to provide a sheet storage device that can suppress the position adjustment of the cover.

Means for Solving the Problems

[0005] The sheet storage device according to the embodiment includes a case, a cassette, a guiding mechanism, a cassette body, a cover, and a biasing member. The cassette moves in the pulling-out direction of the insertion and removal direction and exits the case. On the other hand, the cassette moves in the insertion side of the insertion and removal direction, which is the opposite side of the pulling-out side of the insertion and removal direction, and fits into the case. The guiding mechanism guides the cassette to a position where it fits into the case. The cassette body is included in the cassette and can store sheets. The cover is included in the cassette and is arranged on the pulling-out side of the cassette body in the insertion and removal direction. The cover is relatively movable in the insertion and removal direction with respect to the cassette body. The cover can contact the case when the cassette fits into the case. The biasing member is included in the cassette and biases the cover toward the cassette body in the insertion side of the insertion and removal direction.

Brief Description of the Drawings

[0006]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

Figure 9

Embodiments for Carrying Out the Invention

[0007] Hereinafter, the sheet storage device according to the embodiment will be described with reference to the drawings. FIG. 1 is a schematic configuration diagram of the image forming apparatus 1. For example, the image forming apparatus 1 is arranged in a workplace such as an office.

[0008] In the present application, the Z-direction, X-direction, and Y-direction in the orthogonal coordinate system are defined as follows. The Z-direction is the vertical direction, and the +Z side is the upper side. The X-direction and Y-direction are the horizontal directions. The X-direction is the left-right direction of the image forming apparatus 1. In the X-direction, the side approaching the center of the image forming apparatus 1 may be referred to as the inner side, and the side moving away from the center of the image forming apparatus 1 may be referred to as the outer side. The Y-direction is the front-rear direction of the image forming apparatus 1. The +Y side is the front side, and the -Y side is the rear side.

[0009] The image forming apparatus 1 performs a process of forming an image on the sheet S. The sheet S may be paper. The image forming apparatus 1 includes a case C, a scanner unit 2, an image forming unit 3, a sheet supply unit 4, a conveyance unit 5, a reversing unit 9, a tray 7, a control panel 8, and a control unit 6.

[0010] The case C is formed by a combination of components made of resin materials and components made of metal materials, etc. The case C constitutes the outer shape of the image forming apparatus 1. The case C houses the components of the image forming apparatus 1 inside.

[0011] The scanner unit 2 reads the image information of the copying object as the light and darkness and generates an image signal. The scanner unit 2 outputs the generated image signal to the image forming unit 3. The image forming unit 3 forms a toner image based on the image signal from the scanner unit 2 or from the outside. The toner image is an image formed of toner or other materials. The image forming unit 3 transfers the toner image onto the surface of the sheet S. The image forming unit 3 heats and presses the toner image on the surface of the sheet S to fix the toner image on the sheet S.

[0012] The sheet supply unit 4 supplies the sheets S one by one to the conveyance unit 5 in accordance with the timing at which the image forming unit 3 forms the toner image. The sheet supply unit 4 includes a cassette 20 and a pickup roller 11. The cassette 20 stores sheets S of a predetermined size and type. The pickup roller 11 picks up the sheets S one by one from the cassette 20. The pickup roller 11 supplies the picked-up sheet S to the conveying unit 5.

[0013] The conveying unit 5 conveys the sheet S supplied from the sheet supply unit 4 to the image forming unit 3. The conveying unit 5 includes a conveying roller 12 and a registration roller 13. The conveying roller 12 conveys the sheet S supplied from the pickup roller 11 to the registration roller 13. The conveying roller 12 abuts the leading edge of the sheet S in the conveying direction against the nip RN of the registration roller 13. The registration roller 13 aligns the position of the leading edge of the sheet S in the conveying direction by bending the sheet S at the nip RN. The registration roller 13 conveys the sheet S according to the timing at which the image forming unit 3 transfers the toner image to the sheet S.

[0014] The image forming unit 3 will be described. The image forming unit 3 includes a plurality of image forming sections F, a laser scanning unit 16, an intermediate transfer belt 17, a transfer section 18, and a fixing device 19. The image forming section F includes a photosensitive drum (photoconductor) D, a charger 14, and a developer 15. The image forming section F forms a toner image corresponding to the image signal on the charged photosensitive drum D. The plurality of image forming sections FY, FM, FC, FK form toner images using yellow, magenta, cyan, and black toners on the photosensitive drums DY, DM, DC, DK, respectively.

[0015] The charger 14 charges the surface of the photosensitive drum D. The developer 15 stores a developer containing yellow, magenta, cyan, and black toners. The developer 15 develops the electrostatic latent image on the photosensitive drum D in order to form toner images of each color on the photosensitive drum D.

[0016] The laser scanning unit 16 scans the charged photoreceptor drum D with a laser beam L to expose the photoreceptor drum D and form an electrostatic latent image. The laser scanning unit 16 exposes the photoreceptor drums DY, DM, DC, and DK of the image forming units FY, FM, FC, and FK for each color with separate laser beams LY, LM, LC, and LK.

[0017] The toner image on the surface of the photoreceptor drum D is primarily transferred to the intermediate transfer belt 17. The transfer unit 18 transfers the toner image primarily transferred onto the intermediate transfer belt 17 onto the surface of the sheet S at the secondary transfer position. The fixing device 19 heats and presses the toner image transferred onto the sheet S to fix the toner image onto the sheet S.

[0018] The reversing unit 9 reverses the sheet S to form an image on the back surface of the sheet S. The reversing unit 9 reverses the front and back of the sheet S discharged from the fixing device 19 by means of a switchback. The reversing unit 9 conveys the reversed sheet S toward the registration roller 13. The tray 7 places the sheet S on which an image has been formed and discharged. The control panel 8 is part of the input unit for the operator to input information for operating the image forming apparatus 1. The control panel 8 is also a display unit for displaying information. The control panel 8 has a touch panel and various hard keys. The control unit 6 controls the operations of each part of the image forming apparatus 1.

[0019] Figure 2 is a perspective view of the image forming apparatus 1. The cassette 20 is detachable from the case C of the image forming apparatus 1. The insertion / removal direction is the Y direction, which is the front-rear direction of the image forming apparatus 1. The cassette 20 moves to the pulling-out side in the insertion / removal direction and exits from the case C. The pulling-out side is the front side (+Y side) of the image forming apparatus 1. The cassette 20 moves to the insertion side in the insertion / removal direction and fits into the case C. The insertion side is the rear side (-Y side) of the image forming apparatus 1.

[0020] The cassette 20 is long in the X direction and short in the Z direction. Among the directions orthogonal to the Y direction, the X direction in which the dimension of the cassette 20 is the largest is the lateral direction, and the Z direction is the longitudinal direction. A plurality of cassettes 20 are mounted on the case C of the image forming apparatus 1. The plurality of cassettes 20 are mounted side by side in the Z direction. The widths of the plurality of cassettes 20 in the X direction are equal. The end faces on the +Y side of the plurality of cassettes 20 constitute the design surface of the image forming apparatus 1.

[0021] FIG. 3 is a plan view of the sheet storage device 10 in the embodiment. FIG. 3 shows a state immediately before the cassette 20 is received in the case C. The sheet storage device 10 includes a case C, a cassette 20, and a guiding mechanism 23.

[0022] The guiding mechanism 23 guides the cassette 20 to a position where it fits into the case C. The guiding mechanism 23 has a pin 24 and a retracting device 25. For example, one side in the X direction is the -X side. The pin 24 is disposed at the corner portions on the -X side and -Y side of the cassette 20. The pin 24 protrudes from the cassette 20 toward the -X side. The retracting device 25 is disposed outside the -X side of the cassette 20 and near the end on the -Y side of the cassette 20.

[0023] When the user of the image forming apparatus 1 stores the cassette 20 in the case C, the user pushes the cassette 20 toward the -Y side. When the cassette 20 moves to near the end on the -Y side of the case C, the pin 24 enters the retracting device 25. The retracting device 25 uses the restoring force of a biasing member disposed inside or the like to pull the pin 24 toward the -Y side. Thereby, the cassette 20 fits into the case C. The retracting device 25 assists the user in the operation of storing the cassette 20. The guiding mechanism 23 guides the cassette 20 to a position where it fits into the case C.

[0024] FIG. 4 is a side view of the sheet storage device 10 in a modified example of the embodiment. The guiding mechanism 23 of the modified example has a roller 26 and a groove 27. The roller 26 is attached to the cassette 20. The roller 26 is rotatable about a rotation axis parallel to the X direction. The groove 27 is formed on the +Z side surface of the case C and is recessed toward the -Z side. When the cassette 20 is in the position where it fits into the case C, the roller 26 drops into the groove 27. The guiding mechanism 23 of the modified example also guides the cassette 20 to the position where it fits into the case C.

[0025] As shown in FIG. 3, the cassette 20 includes a cassette body 21, a cover 30, a guide portion 31, and a biasing member 35. The cassette body 21 is formed by a combination of parts made of resin material and parts made of metal material, etc. The cassette body 21 has a sheet storage portion 22 capable of storing the sheet S. The sheet storage portion 22 opens on the +Z side. The sheet storage portion 22 can store the sheet S in a state where the thickness direction of the sheet S substantially coincides with the Z direction.

[0026] The cover 30 is formed separately from the cassette body 21 by a resin material or the like. The cover 30 is disposed on the +Y side of the cassette body 21 and covers the +Y side of the cassette body 21. The cover 30 is relatively movable in the Y direction with respect to the cassette body 21. The end portion of the cover 30 in the X direction protrudes outward in the X direction from the cassette body 21. When the cassette 20 fits into the case C, the cover 30 can abut against the case C at the end portion in the X direction. By both end portions of the cover 30 in the X direction abutting against the case C, the posture of the cover 30 is stabilized.

[0027] The cover 30 has a protrusion 37 at the end portion in the X direction. The protrusion 37 protrudes toward the -Y side. The cover 30 can abut against the tip portion on the +Y side of the case C by the tip portion on the -Y side of the protrusion 37. The protrusion 37 is formed of a rigid material such as resin material. The protrusion 37 is formed integrally with the cover 30. The protrusion 37 may be formed separately from the cover 30 and attached to the cover 30. The protrusions 37 are respectively disposed at both end portions in the Z direction at both end portions in the X direction of the cover 30.

[0028] The guide portion 31 guides the relative movement in the Y direction of the cassette main body 21 and the cover 30. The guide portion 31 has an engagement groove 33 and an engagement pin 32. Of the cassette main body 21 and the cover 30, the engagement groove 33 is provided on one of them, and the engagement pin 32 is provided on the other. In the example of the embodiment, the engagement groove 33 is provided on the cover 30, and the engagement pin 32 is provided on the cassette main body 21.

[0029] The engagement groove 33 extends in the Y direction. The engagement groove 33 is formed in the engagement member 34. The engagement groove 33 may be formed in the cover 30 itself. The engagement groove 33 is a long hole that penetrates the engagement member 34 in the Z direction. The engagement groove 33 may be a long groove that is recessed in the Z direction. The engagement member 34 having the engagement groove 33 is integrally formed with the cover 30. The engagement member 34 having the engagement groove 33 may be formed separately from the cover 30 and attached to the cover 30.

[0030] The engagement pin 32 has a substantially cylindrical shape. The engagement pin 32 projects in the Z direction from the cassette main body 21. The engagement pin 32 is integrally formed with the cassette main body 21. The engagement pin 32 may be formed separately from the cassette main body 21 and attached to the cassette main body 21. The engagement pin 32 is disposed inside the engagement groove 33.

[0031] A pair of guide portions 31 are arranged spaced apart in the X direction. By the pair of guide portions 31, the cassette main body 21 and the cover 30 are relatively movable only in the Y direction. The range of relative movement in the Y direction is restricted by the length of the engagement groove 33. By the pair of guide portions 31, the relative movement of the cassette main body 21 and the cover 30 in the X direction and the Z direction is suppressed. By the pair of guide portions 31, the inclination of the cover 30 in the Z direction is suppressed.

[0032] A pair of guide portions 31 are arranged only on one side in the Z direction of the cassette 20. Thereby, the relative movement in the Y direction of the cassette main body 21 and the cover 30 becomes smooth. On the other hand, a pair of guide portions 31 may be arranged on both sides in the Z direction of the cassette 20, respectively.

[0033] The biasing member 35 is a coil spring or the like. The biasing member 35 biases the cover 30 toward the cassette body 21 in the -Y direction. One biasing member 35 is disposed inside the pair of guide portions 31 in the X direction. One biasing member 35 is disposed at the central portions of the cassette 20 in the X and Z directions. Thereby, the posture of the cover 30 with respect to the cassette body 21 becomes stable. On the other hand, a plurality of biasing members 35 may be disposed at symmetric positions in the X and Z directions.

[0034] FIG. 5 is a side cross-sectional view of the cassette body 21 and the cover 30. The cover 30 has a through hole 38. The through hole 38 penetrates the cover 30 in the Y direction. The cassette body 21 has a recess 29 and a handle portion 28. The recess 29 is formed at substantially the same position as the through hole 38 in the X and Z directions. The recess 29 extends from the end face on the +Y side of the cassette body 21 in the -Y direction and further extends in the +Z direction. The handle portion 28 is formed between the portion where the recess 29 extends in the +Z direction and the end face on the +Y side of the cassette body 21. The handle portion 28 is formed integrally with the cover 30 as a part of the cover 30.

[0035] When the user of the image forming apparatus 1 pulls out the cassette 20 from the case C, the user puts a hand into the through hole 38 of the cover 30 and the recess 29 of the cassette body 21. The user bends the tip of the finger toward the +Z side and disposes the tip of the finger on the -Y side of the handle portion 28. When the user pulls the hand in the +Y direction, a force in the +Y direction acts on the handle portion 28 from the tip of the finger. That is, the user can access the handle portion 28 through the through hole 38 from the +Y side of the cover 30 and can apply a force in the +Y direction to the handle portion 28. Thereby, the cassette 20 is pulled out in the +Y direction. The handle portion may be a handle protruding inside the through hole 38 from the cassette body 21.

[0036] The operation of the sheet storage device 10 of the embodiment will be described. In the state of FIG. 3, the cassette body 21 and the cover 30 are in contact with each other. The protrusion 37 of the cover 30 is separated from the case C in the +Y direction.

[0037] FIG. 6 is an explanatory diagram of the first operation of the sheet storage device 10. The cassette 20 is drawn into the -Y side by the drawing device 25 (see FIG. 3) and shifts to the state shown in FIG. 6. In the state of FIG. 6, the protrusion 37 of the cover 30 is in contact with the case C. The cassette body 21 is biased toward the +Y side by the biasing member 35. The biasing force of the biasing member 35 is smaller than the drawing force of the drawing device 25. The drawing device 25 draws the cassette body 21 toward the -Y side against the biasing force of the biasing member 35. Thereby, the cassette body 21 is drawn from the cover 30 to the storage position away from the -Y side.

[0038] The cover 30 is biased toward the -Y side by the biasing member 35. Therefore, even if the storage position of the cassette body 21 varies, the cover 30 is arranged at the predetermined position shown in FIG. 6.

[0039] The image forming apparatus 1 shown in FIG. 2 has a plurality of cassettes 20. The covers 30 of the plurality of cassettes 20 are all arranged at the predetermined positions. The cover 30 has vertical lines VL at both ends in the X direction. The vertical line VL is a straight line parallel to the Z direction. The plurality of cassettes 20 are arranged side by side in the Z direction. The vertical lines VL of the covers 30 of the plurality of cassettes 20 are aligned in a straight line. Thereby, the deterioration of the appearance of the image forming apparatus 1 is suppressed.

[0040] As described in detail above, the sheet storage device 10 of the embodiment includes a case C, a cassette 20, a guiding mechanism 23, a cassette body 21, a cover 30, and a biasing member 35. The cassette 20 moves to the +Y side and exits the case C. On the other hand, the cassette 20 moves to the -Y side, which is the side opposite to the +Y side, and fits into the case C. The guiding mechanism 23 guides the cassette 20 to a position where it fits into the case C. The cassette body 21 is included in the cassette 20 and can store sheets. The cover 30 is included in the cassette 20 and is disposed on the +Y side of the cassette body 21. The cover 30 is relatively movable in the Y direction with respect to the cassette body 21. The cover 30 can contact the case C when the cassette 20 fits into the case C. The biasing member 35 is included in the cassette 20 and biases the cover 30 toward the -Y side against the cassette body 21.

[0041] Since the guiding mechanism 23 is composed of a plurality of parts, the storage position of the cassette body 21 varies. In particular, since the retracting device 25 is composed of a large number of parts, the variation in the storage position of the cassette body 21 becomes significant. In addition, since the cassette body 21 is composed of a large number of parts, the position of the cover 30 disposed on the +Y side of the cassette body 21 varies. On the other hand, in the embodiment, since the cover 30 is disposed at a predetermined position, deterioration in appearance is suppressed. Therefore, adjustment (alignment) of the position of the cover 30 can be suppressed.

[0042] FIG. 7 is an explanatory diagram of the second operation of the sheet storage device 10, FIG. 8 is an explanatory diagram of the third operation, and FIG. 9 is an explanatory diagram of the fourth operation. In FIGS. 7-9, the operations of the cassette body 21 and the cover 30 of the cassette 20 are exaggeratedly depicted.

[0043] The retracting device 25 (see FIG. 3) is disposed only on the -X side of the cassette 20 and retracts the cassette 20 to the -Y side. As shown in FIG. 7, the -X side of the cassette 20 is retracted to the -Y side prior to the +X side. The protrusion 37 on the -X side of the cover 30 contacts the case C prior to the protrusion 37 on the +X side.

[0044] From the state of FIG. 7, the cassette 20 is further drawn in the -Y direction. As shown in FIG. 8, the cover 30 rotates about the projection 37 on the -X side. The projection 37 on the +X side of the cover 30 abuts against the case C, and the cover 30 is disposed at a predetermined position. At this time, the -X side of the cassette body 21 moves away from the cover 30 in the -Y direction. The cassette body 21 rotates about the end on the +X side as a fulcrum.

[0045] From the state of FIG. 8, the cassette 20 is further drawn in the -Y direction. As shown in FIG. 9, the cover 30 stays at a predetermined position, and the cassette body 21 is drawn to the storage position. At this time, the +X side of the cassette body 21 moves away from the cover 30 in the -Y direction. Of the pair of guide portions 31, the guide portion 31 disposed on the -X side is defined as a first guide portion 31a, and the guide portion 31 disposed on the +X side is defined as a second guide portion 31b. The cassette body 21 rotates about the engagement pin 32 of the first guide portion 31a.

[0046] The dimensional difference in the X direction between the engagement groove 33 and the engagement pin 32 in the guide portion 31 is defined as an engagement dimensional difference. That is, the difference between the width in the X direction of the engagement groove 33 and the diameter of the engagement pin 32 is the engagement dimensional difference. Preferably, the engagement dimensional difference of the first guide portion 31a is smaller than the engagement dimensional difference of the second guide portion 31b. From FIG. 8 to FIG. 9, the cassette body 21 rotates about the engagement pin 32 of the first guide portion 31a. Since the engagement dimensional difference of the first guide portion 31a is small, the rotation center of the cassette body 21 does not shift, and rattling during rotation of the cassette body 21 is suppressed. Since the engagement dimensional difference of the second guide portion 31b is large, the cassette body 21 rotates smoothly. Thereby, even when the drawing device 25 is disposed only on the -X side of the cassette 20, the cassette 20 is smoothly drawn to the storage position.

[0047] The engagement groove 33 of the second guide portion 31b may be an arc centered on the engagement pin 32 of the first guide portion 31a instead of being a straight line parallel to the Y direction. Even in this case, the cassette body 21 can rotate smoothly about the engagement pin 32 of the first guide portion 31a.

[0048] (Appendix 1) A case, A cassette that moves to the insertion side in the insertion / extraction direction, which is opposite to the extraction side in the insertion / extraction direction, while moving to the extraction side in the insertion / extraction direction and coming out of the case, and fits into the case, A guiding mechanism that guides the cassette to a position where it fits into the case, A cassette body included in the cassette and capable of accommodating a sheet, A cover included in the cassette, arranged on the extraction side in the insertion / extraction direction of the cassette body, relatively movable in the insertion / extraction direction with respect to the cassette body, and capable of abutting against the case when the cassette fits into the case, An urging member included in the cassette that urges the cover toward the cassette body in the insertion side in the insertion / extraction direction, and having, A sheet storage device. (Supplementary Note 2) The guiding mechanism has a drawing-in device that draws in the cassette to the insertion side in the insertion / extraction direction, The sheet storage device according to Supplementary Note 1. (Supplementary Note 3) The urging force of the urging member is smaller than the drawing-in force of the drawing-in device, The sheet storage device according to Supplementary Note 2. (Supplementary Note 4) The cassette includes a guiding portion that guides the relative movement of the cassette body and the cover in the insertion / extraction direction, The guiding portion is, An engaging groove provided on one of the cassette body and the cover and extending in the insertion / extraction direction, An engaging pin provided on the other of the cassette body and the cover and arranged inside the engaging groove, and having, The sheet storage device according to Supplementary Note 1. (Supplementary Note 5) The cassette body and the cover are relatively movable only in the insertion / extraction direction, The sheet storage device according to Supplementary Note 4. (Supplementary Note 6) When the direction in which the cassette has the maximum dimension among the directions orthogonal to the insertion / removal direction is defined as the lateral direction, a pair of the guide portions are arranged to be separated from each other in the lateral direction, The sheet storage device according to Supplementary Note 4. (Supplementary Note 7) One of the biasing members is arranged inside the pair of guide portions in the lateral direction, The sheet storage device according to Supplementary Note 6. (Supplementary Note 8) The drawing-in device is arranged on one side in the lateral direction of the cassette, the dimensional difference in the lateral direction between the engagement groove and the engagement pin in the guide portion is defined as the engagement dimensional difference, Of the pair of guide portions, when the guide portion arranged on one side in the lateral direction is defined as the first guide portion and the guide portion arranged on the other side in the lateral direction, which is the side opposite to the one side in the lateral direction, is defined as the second guide portion, the engagement dimensional difference of the first guide portion is smaller than the engagement dimensional difference of the second guide portion, The sheet storage device according to Supplementary Note 6. (Supplementary Note 9) The cassette body is accessible from the pulling-out side in the insertion / removal direction of the cover, and has a pulling portion capable of applying a force to the pulling-out side in the insertion / removal direction. The sheet storage device according to Supplementary Note 1. (Supplementary Note 10) When the direction in which the cassette has the maximum dimension among the directions orthogonal to the insertion / removal direction is defined as the lateral direction, the cover can abut on the case at the tip of the protrusion arranged at the end in the lateral direction. The sheet storage device according to Supplementary Note 1.

[0049] According to at least one of the embodiments described above, there are provided a cassette body 21, a cover 30, and a biasing member 35. Thereby, adjustment of the storage position of the cassette 20 can be suppressed.

[0050] Although several embodiments of the present invention have been described, these embodiments are presented by way of example and are not intended to limit the scope of the invention. These embodiments can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the gist of the invention. These embodiments and their modifications are included in the scope and gist of the invention, as well as in the invention described in the claims and the equivalent scope thereof.

Explanation of Reference Numerals

[0051] C... case, 10... sheet storage device, 20... cassette, 21... cassette body, 23... guiding mechanism, 25... drawing-in device, 30... cover, 31... guide portion, 31a... first guide portion, 31b... second guide portion, 32... engagement pin, 33... engagement groove, 35... biasing member, 37... protrusion.

Claims

1. A case, A cassette that moves to the pulling side in the insertion / removal direction and exits from the case, while moving to the insertion side in the insertion / removal direction, which is opposite to the pulling side in the insertion / removal direction, and fits into the case, A guiding mechanism that guides the cassette to a position where it fits into the case, A cassette body included in the cassette and capable of accommodating a sheet, A cover included in the cassette, disposed on the pulling side in the insertion / removal direction of the cassette body, relatively movable in the insertion / removal direction with respect to the cassette body, and capable of abutting against the case when the cassette fits into the case, An urging member included in the cassette that urges the cover toward the cassette body in the insertion side in the insertion / removal direction, having a Sheet storage device.

2. The guiding mechanism has a pulling device that pulls the cassette to the insertion side in the insertion / removal direction, The sheet storage device according to claim 1.

3. The urging force of the urging member is smaller than the pulling force of the pulling device, The sheet storage device according to claim 2.

4. It includes a guide portion that guides the relative movement of the cassette body and the cover in the insertion / removal direction, The guide portion is An engaging groove provided on one of the cassette body and the cover and extending in the insertion / removal direction, An engaging pin provided on the other of the cassette body and the cover and disposed inside the engaging groove, having a The sheet storage device according to claim 1.

5. The cassette body and the cover are relatively movable only in the insertion / removal direction, The sheet storage device according to claim 4.

Images