JP2019026411A - Medium housing apparatus and image forming apparatus - Google Patents

Abstract

To prevent a medium from being damaged when setting the medium.SOLUTION: The medium housing apparatus includes: a medium placement unit having a placement surface Sp; and a regulating member 61 which is movably arranged in a predetermined direction with respect to the placement surface Sp and regulates a movement of a medium. The regulating member 61 includes a first engaging unit, the medium placement unit includes a second engaging unit on a surface opposite to the placement surface Sp, and, by engaging the first and second engaging units, the regulating member is positioned at a predetermined position on the placement unit. Since the first and second engaging units are engaged on the side opposite to the placement surface, the placement surface can be flattened. When a medium is set in a medium storage device, an end portion of the medium does not interfere with the first engaging unit, so that the medium is not damaged.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a medium accommodating device and an image forming apparatus.

  2. Description of the Related Art Conventionally, in an image forming apparatus such as a printer, a copier, a facsimile machine, a multifunction machine, etc., for example, a printer, a paper cassette as a medium storage device is detachably disposed on the main body of the printer, that is, the apparatus main body A sheet as a medium is stored in a sheet cassette in a stacked state.

  The paper cassette is provided with a pickup roller, a feed roller, and a separation roller, and the paper in the paper cassette is fed out by the pickup roller, separated one by one by the feed roller and the separation roller, and supplied to the paper conveyance path. The paper is fed and sent to the image forming unit, where an image is formed on the paper.

  The paper cassette is disposed on the paper placement portion for placing the paper, opposite to both ends in the paper width direction, that is, both edges in the paper placement portion, and moves in the paper width direction. A rear guide that is disposed to face the rear end in the longitudinal direction of the sheet, that is, the rear end, and that regulates movement in the longitudinal direction (backward movement) of the sheet.

  By the way, a positioning rack portion composed of a plurality of teeth arranged side by side in the longitudinal direction of the paper is formed on the surface on which the paper is placed in the paper placement portion, that is, the placement surface. A guide rack portion made up of a predetermined number of teeth is formed facing the portion, and the rear guide can be moved in the longitudinal direction of the paper by selectively engaging the teeth of the guide rack portion and the teeth of the positioning rack portion. A paper cassette that can be positioned is provided (see, for example, Patent Document 1).

JP 2007-223686 A

  However, in the conventional paper cassette, since the teeth of the positioning rack portion are exposed on the placement surface, the paper and the teeth of the positioning rack portion interfere when the paper is set in the paper cassette. In this case, the paper is damaged.

  An object of the present invention is to solve the problems of the conventional paper cassette and to provide a medium storage device and an image forming apparatus that do not damage the medium when the medium is set.

  For this purpose, in the medium accommodating device of the present invention, a medium placement unit having a placement surface on which a medium is placed and a medium placement unit that is movably disposed in a predetermined direction with respect to the placement surface described above, And a regulating member that regulates movement.

  The restricting member includes a first engaging portion.

  In addition, the medium placement portion includes a second engagement portion that is engaged with the first engagement portion on a surface opposite to the placement surface.

  Then, by engaging the first and second engaging portions, the restricting member is positioned at a predetermined position on the medium placing portion.

  According to the present invention, in the medium accommodation device, the medium placement unit having the placement surface on which the medium is placed, and the medium placement unit are arranged to be movable in a predetermined direction with respect to the placement surface. And a regulating member that regulates movement.

  The restricting member includes a first engaging portion.

  In addition, the medium placement portion includes a second engagement portion that is engaged with the first engagement portion on a surface opposite to the placement surface.

  Then, by engaging the first and second engaging portions, the restricting member is positioned at a predetermined position on the medium placing portion.

  In this case, since the first and second engaging portions are engaged on the side opposite to the placement surface, the placement surface can be made flat.

  Therefore, when the medium is set in the medium accommodating device, the end portion of the medium does not interfere with the first engaging portion, so that the medium is not damaged.

  Further, even when an external force is applied to the regulating member, a moment is generated in the direction in which the first and second engaging portions are engaged with each other, so that the engagement of the first and second engaging portions may be released. Absent. Therefore, the regulating member can be positioned with high accuracy.

It is principal part sectional drawing of the paper cassette in embodiment of this invention. 1 is a conceptual diagram of a printer in an embodiment of the present invention. It is a conceptual diagram of the paper cassette in the embodiment of the present invention. It is a figure which shows the connection state of the side guide in embodiment of this invention. It is AA sectional drawing of FIG. FIG. 10 is a first diagram for explaining the operation of the rear guide when setting paper in the paper cassette in the embodiment of the present invention. FIG. 10 is a second diagram for explaining the operation of the rear guide when setting paper in the paper cassette in the embodiment of the present invention.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. In this case, a printer as an image forming apparatus will be described.

  FIG. 2 is a conceptual diagram of the printer in the embodiment of the present invention.

  In the figure, reference numeral 10 denotes a printer, Cs denotes a housing, 13Bk, 13Y, 13M, and 13C denote black, yellow, magenta, and cyan image forming units. The image forming units 13Bk, 13Y, 13M, and 13C A photosensitive drum 31 is provided as an image carrier that is rotatably arranged.

  Reference numeral 33 denotes an LED head as an exposure device disposed above the respective photosensitive drums 31 so as to face the photosensitive drums 31. Each of the image forming units 13Bk, 13Y, 13M, 13C and the respective LED heads. 33 forms the image forming portion Q.

  Each of the image forming units 13Bk, 13Y, 13M, and 13C includes a charging roller 32 as a charging device and a developing roller 34 as a developer carrying member, which are rotatably disposed in contact with the photosensitive drums 31. A first toner supply roller 35 as a first developer supply member that is rotatably disposed in contact with the developing roller 34, and is rotatably disposed in contact with the first toner supply roller 35. And a second toner supply roller 36 as a second developer supply member.

  When the surface of the photosensitive drum 31 is uniformly charged by the charging roller 32 and exposed by the LED head 33, an electrostatic latent image as a latent image is formed on the surface of the photosensitive drum 31. Then, the second toner supply roller 36 supplies the toner as the developer supplied from the toner cartridge 37 as the developer accommodating portion to the development roller 34 via the first toner supply roller 35, and the development roller 34. However, when development is performed by attaching toner to the electrostatic latent image, a toner image as a developer image is formed on the photosensitive drum 31.

  In addition, a paper cassette 22 serving as a medium accommodating device that accommodates sheets P serving as media in a stacked state is detachably disposed in the main body of the printer 10, that is, in a lower portion in the apparatus main body. .

  The paper cassette 22 includes a paper placement unit 28 as a medium placement unit for placing the paper P, and in the paper placement unit 28, both ends in the width direction of the paper P, that is, both edges of the paper P A side guide 29 (FIG. 3) as a first restriction guide portion, which will be described later, is disposed so as to restrict the movement of the paper P in the width direction, and is rearward in the longitudinal direction of the paper P (the conveyance direction of the paper P). The rear guide 30 as a second restriction guide portion that is disposed to face the rear end of the sheet P, that is, the rear end of the sheet P and restricts the movement (rearward movement) of the sheet P in the longitudinal direction. Have

  A pickup roller 41 serving as a feeding member is placed on the paper placement unit 28 at the front end in the longitudinal direction of the paper cassette 22 (downstream in the transport direction of the paper P), that is, at the front end of the paper cassette 22. It is arranged in contact with the placed paper P. A feed roller 43 as a sheet feeding member is disposed adjacent to the pickup roller 41, and a separation roller 44 as a separation member is disposed in contact with the feed roller 43, and is fed out by the pickup roller 41. The sheets P are separated one by one by the feed roller 43 and the separation roller 44 and fed to a sheet conveyance path Rt1 as a first medium conveyance path.

  A pair of conveyance rollers m1 and m2 as first and second conveyance members and a pair of registration rollers m3 as third conveyance members are rotatably disposed on the sheet conveyance path Rt1. The paper P fed to the paper transport path Rt1 is transported by the transport roller pair m1 and m2, the skew is corrected by the registration roller pair m3, and supplied to the image forming unit Q.

  A transfer unit u1 is disposed below the image forming portion Q in the apparatus main body in order to transfer the toner image formed on each photosensitive drum 31 onto the paper P.

  The transfer unit u1 includes a driving roller R1 as a first roller rotatably disposed in the vicinity of the image forming unit 13C below the image forming unit Q, and the vicinity of the image forming unit 13Bk below the image forming unit Q. Is driven by a driven roller R2 as a second roller that is rotatably disposed in the motor, the driving roller R1 and the driven roller R2, and is driven in the direction of arrow A as the driving roller R1 rotates. A transfer belt 45 that conveys the paper P, and is arranged to face each of the photosensitive drums 31 via the transfer belt 45, and sequentially transfers the toner images of each color onto the paper P to form a color toner image. A transfer roller 46 serving as a transfer member, and a driven roller R2 through the transfer belt 45 so as to face the toner on the transfer belt 45. A cleaning blade 47 as a cleaning member for removing by taking, provided with a waste toner tank 48 or the like is accumulated toner removed by the cleaning blade 47.

  A fixing device 23 as a fixing device is disposed on the downstream side of the image forming portion Q in the paper transport path Rt1. The fixing device 23 includes a heating roller 25 serving as a first fixing member that is rotatably arranged, and a pressure roller serving as a second fixing member that is rotatably disposed in contact with the heating roller 25. 26, a halogen lamp 27 as a heating body disposed in the heating roller 25, and the like. In the fixing device 23, the color toner image on the paper P sent from the image forming unit Q is heated and pressed. Then, it is fixed on the paper P, and a color image is formed on the paper P.

  A pair of conveying rollers m4 as a fourth conveying member and a pair of discharge rollers m5 as a fifth conveying member are disposed on the downstream side of the fixing device 23 in the sheet conveying path Rt1, and are conveyed by the conveying roller pair m4. The sheet P thus discharged is discharged out of the apparatus main body from a discharge port 51 formed in the housing Cs via the discharge roller pair m5 and is stacked on the stacker 52.

  The printer 10 can perform printing on one side and both sides of the paper P. For this reason, the second medium transport path is provided downstream of the transport roller pair m4 in the paper transport path Rt1. The paper transport path Rt2 is branched and formed, and a transport roller pair m6 as a sixth transport member is disposed in the paper transport path Rt2. Further, a paper transport path Rt3 as a third medium transport path is formed on the upstream side of the transport roller pair m6 in the paper transport path Rt2, and is formed as a seventh to ninth transport member on the paper transport path Rt3. The conveying roller pairs m7 to m9 are disposed. The paper transport path Rt3 is joined to the paper transport path Rt1 on the upstream side of the transport roller pair m2 in the paper transport path Rt1.

  A switching guide 55 serving as a first switching member that switches the direction of guiding the paper P is disposed adjacent to the transport roller pair m4 on the downstream side of the transport roller pair m4 in the paper transport path Rt1, A switching guide 56 serving as a second switching member for switching the direction of guiding the paper P is disposed adjacent to the transport roller pair m6 on the upstream side of the transport roller pair m6 in the paper transport path Rt2. The switching guide 55 guides the sheet P discharged from the fixing unit 23 to the first position a for guiding the sheet P toward the discharge port 51 and the sheet P discharged from the fixing unit 23 to the sheet conveyance path Rt2. The switching guide 56 is placed in a second position b for the purpose of retracting the sheet P guided by the switching guide 55 to the medium retracting section q1 ahead of the pair of transport rollers m6 in the sheet transport path Rt2. The first position c and the second position d for reversing the sheet P retracted to the medium retracting section q1 and guiding it to the sheet transport path Rt3.

  When printing on one side of the paper P, the switching guide 55 is placed at the first position a, and the paper P discharged from the fixing device 23 is transported through the paper transport path Rt1 and is discharged from the discharge port 51 to the outside of the apparatus main body. And is loaded on the stacker 52.

  When printing on both sides of the paper P, first, the switching guide 55 is placed at the second position b and the switching guide 56 is placed at the first position c, and a color image is formed on the front side, and fixing. The paper P discharged from the container 23 is retracted to the medium retracting part q1 in the paper transport path Rt2. Subsequently, the switching guide 55 is placed at the first position “a”, the switching guide 56 is placed at the second position “d”, and the sheet P retracted by the medium retracting section q1 is reversed and guided to the sheet transport path Rt3. Then, it is transported through the paper transport path Rt3 and sent to the paper transport path Rt1. Then, a color image is formed on the back side, and the paper P discharged from the fixing device 23 is transported through the paper transport path Rt1, discharged from the discharge port 51 to the outside of the apparatus main body, and stacked on the stacker 52.

  Next, the paper cassette 22 will be described.

  FIG. 1 is a cross-sectional view of a main part of a paper cassette in the embodiment of the present invention, FIG. 3 is a conceptual diagram of the paper cassette in the embodiment of the present invention, and FIG. 4 shows a connected state of side guides in the embodiment of the present invention. FIG. 5 is a cross-sectional view taken along the line AA in FIG.

  In the figure, reference numeral 22 denotes a paper cassette. The paper cassette 22 is a cassette frame Fr as a medium containing frame having a box-like shape, and in the cassette frame Fr, in a predetermined direction with respect to the bottom wall Wb. In the embodiment, a pair of side guides 29 movably arranged in the direction of arrow B along the slit SL1 and a predetermined direction with respect to the bottom wall Wb in the cassette frame Fr, in the present embodiment, The rear guide 30 is provided so as to be movable in the direction of arrow C along the slit SL2.

  The cassette frame Fr includes the bottom wall Wb, a front wall Wf formed at the front end of the paper cassette 22, side walls Ws1 and Ws2, and a rear side in the longitudinal direction of the paper cassette 22 (upstream side in the transport direction of the paper P). , That is, a rear wall Wr formed at the rear end of the paper cassette 22.

  In the present embodiment, the paper placement unit 28 is formed by the bottom wall Wb. However, the actual paper placement unit 28 includes the rear half of the bottom wall Wb on the rear wall Wr side, and The bottom wall Wb includes a paper placement plate disposed on the front half of the front wall Wf side so as to be swingable separately from the bottom wall Wb. The paper P is placed on the rear half of the bottom wall Wb and the paper placement plate. Is done. The side guide 29 is disposed on the paper placement plate. The paper placement plate is tilted according to the remaining amount of the paper P in the paper cassette 22, and presses the uppermost paper P against the pickup roller 41 (FIG. 2).

  The side guide 29 is positioned corresponding to the size of the paper P set in the paper cassette 22 in the width direction of the paper P, that is, the paper size, and restricts movement of the paper P in the width direction. For this purpose, the side guides 29 are opposed to the paper placement unit 28 so as to be slidable in the width direction of the paper P, and opposed to both edges of the paper P, so that the support parts 29a. And a regulating surface Sa is formed on the surface of the rising portion 29b facing both edges of the paper P.

  The side guides 29 are connected to each other via a connecting portion 57 disposed below the bottom wall Wb. The connecting portion 57 is arranged so as to be rotatable with respect to the bottom wall Wb, and extended from the support portion 29a of each side guide 29 toward the pinion gear Pg, and pinions at positions facing each other. It consists of a rack Lk meshed with Pg. Accordingly, the side guides 29 can be moved in conjunction with each other, and the side guides 29 can be moved toward the center of the cassette frame Fr or moved toward the side walls Ws1 and Ws2.

  Then, the paper P is placed on the paper placement unit 28, the side guide 29 is moved, and the upright portion 29b is brought into contact with both edges of the paper P, thereby restricting the movement of the paper P in the width direction. .

  The rear guide 30 is positioned in accordance with the paper size of the paper P set in the paper cassette 22 in the conveyance direction of the paper P, and restricts the rearward movement of the paper P.

  For this purpose, the rear guide 30 is slidably disposed in the conveyance direction of the paper P with respect to the bottom wall Wb, and is movable with respect to the restriction member 61. As an operation member 62 movably disposed, a lock member 63 for selectively disabling the regulating member 61 with respect to the bottom wall Wb, a state holding member for holding the state of the lock member 63, and A pair of compression springs 64 as an urging member is provided.

  The restriction member 61 is formed of a hollow block having a predetermined size and height in the width direction and the conveyance direction of the paper P, and is opposed to the front surface portion Pf and the rear wall Wr formed to face the front wall Wf. And the bottom surface portion Pb formed in contact with the bottom wall Wb, and the back surface portion Pr formed by contacting the side walls Ws1 and Ws2, and the bottom surface portion Pb of the front surface portion Pf. A portion in contact with the rear end surface Sd (FIG. 7) of the paper P becomes a regulating surface Sb that regulates the backward movement of the paper P, and a bottom surface portion Pb becomes a sliding surface Sc that slides on the bottom wall Wb. Further, the surface on which the paper P is placed on the bottom wall Wb becomes the placement surface Sp.

  The upper side of the restriction member 61 is opened, and the operator can operate the operation member 62 through an opening 71 formed on the upper surface of the restriction member 61.

  The operating member 62 is swingably supported with respect to the restricting member 61 with the rotation shaft sh1 disposed on the side surface portions Ps1 and Ps2 of the restricting member 61 as a swing center. The operation member 62 has an L-shaped cross section, and extends upward from the rotation shaft sh1 on the back surface Pr side (the side opposite to the regulation surface Sb) in the regulation member 61. In the present embodiment, the plate-like lever 73 is formed as an operating portion, and is formed so as to be forward of the rotation shaft sh1 and at a predetermined angle with respect to the lever 73 in the present embodiment. Thus, it is formed integrally with the lever 73 so as to extend toward the front surface portion Pf, and includes a pair of arms 74 as a transmission member that transmits the movement of the lever 73 to the lock member 63. In the initial state of the operation member 62, as shown in FIG. 1, the lever 73 is extended in the vertical direction, and the arm 74 is extended in the horizontal direction.

  When the operator puts his finger on the lever 73 and tilts it forward (clockwise in FIG. 1) in the conveyance direction of the paper P, the operation is performed around the rotation shaft sh1 disposed between the lever 73 and the arm 74. The member 62 is rotated and the tip of the arm 74 is moved downward.

  Further, the lock member 63 places the restricting member 61 in a locked state in which it cannot move with respect to the bottom wall Wb and in an unlocked state in which it can move with respect to the bottom wall Wb.

  For this purpose, the lock member 63 is disposed adjacent to the front surface portion Pf below the tip of the arm 74 and extends through the bottom surface portion Pb and the slit SL2 of the bottom wall Wb. And a connecting member 76 that is placed at a lower position and transmits the movement of the arm 74 from the surface side of the bottom wall Wb that is the placement surface Sp side to the back surface side of the bottom wall Wb that is opposite to the placement surface Sp. In addition, an engagement portion Rc as an engagement portion is formed between the connecting member 76 and the bottom wall Wb on the back surface side of the bottom wall Wb.

  The connecting member 76 has an “H” shape, extends in the width direction of the paper P, is disposed so as to be in contact with the tips of the two arms 74, and receives the movement of the arms 74. Motion receiving portion 81 as a transmission member, and formed downward from the motion receiving portion 81 and extending through the bottom surface Pb and the slit SL2 of the bottom wall Wb, and the movement of the arm 74 is engaged. A motion transmission portion 82 as a second transmission member that transmits to Rc, and a guide rack portion 83 as a third transmission member that extends in the width direction of the paper P on the back surface side of the bottom wall Wb are provided.

  In addition, the positioning rack portion 84 is formed in a predetermined region on the back surface of the bottom wall Wb, in the present embodiment, in a range in which the regulating member 61 is moved according to the paper size of the paper P.

  In the present embodiment, the meshing portion Rc is formed by projecting toward the positioning rack portion 84 on the surface of the guide rack portion 83 that faces the positioning rack portion 84. A plurality of teeth 88 as first engaging portions and a plurality of second engaging portions formed on the surface of the positioning rack portion 84 facing the guide rack portion 83 so as to protrude toward the guide rack portion 83. The teeth 88 and 89 are engaged (engaged) on the regulating surface Sb side in accordance with the operation of the operation member 62 by the operator, and are selectively engaged in the present embodiment.

  The teeth 88 and 89 are formed on both sides of the motion transmitting portion 82 with a predetermined pitch in the longitudinal direction of the paper P and with a predetermined width in the width direction of the paper P.

  The guide rack portion 83 includes six teeth 88, and includes a portion immediately below the connecting member 76 and a portion formed so as to protrude forward from the portion immediately below the sheet cassette 22.

  When the connecting member 76 is placed in the upper position, the teeth 88 and 89 are engaged, the restricting member 61 is placed in a locked state where it cannot move with respect to the bottom wall Wb, and the connecting member 76 is placed in the lower position. When placed, the engagement of the teeth 88 and 89 is released, and the regulating member 61 is placed in an unlocked state in which it can move on the placement surface Sp.

  Further, the compression spring 64 is disposed with one end abutting against the motion receiving portion 81 and the other end abutting against the bottom surface portion Pb of the regulating member 61, The upper end of the arm 74 is pushed upward with a predetermined biasing force toward the upper side, that is, in a direction in which the tooth 88 is engaged with the tooth 89.

  Accordingly, in a state where the operation member 62 is not operated by the operator, the connecting member 76 is placed in the upper position, and the operation member 62 is placed in the initial state shown in FIG. As a result, the teeth 88 and 89 are engaged, and the regulating member 61 is placed in a locked state.

  When the operator tilts the lever 73 forward, the operation member 62 is rotated and the front end of the arm 74 is moved downward. As a result, the connecting member 76 is moved downward against the urging force of the compression spring 64 and placed at the lower position. As a result, the engagement of the teeth 88 and 89 is released, and the regulating member 61 is placed in the unlocked state.

  Next, the operation of the rear guide 30 when setting the paper P in the paper cassette 22 will be described.

  FIG. 6 is a first diagram for explaining the operation of the rear guide when paper is set in the paper cassette in the embodiment of the present invention, and FIG. 7 is when paper is set in the paper cassette in the embodiment of the present invention. FIG. 10 is a second view for explaining the operation of the rear guide.

  In the figure, 22 is a paper cassette, 30 is a rear guide, 61 is a regulating member, and P is paper.

  When setting the paper P in the paper cassette 22, the operator first places the paper P on the paper placement unit 28 so that the front end of the paper P abuts the medium reference surface set at the front end of the paper cassette 22. Put on.

  At this time, the regulating member 61 is placed behind the rear end of the paper P on the placement surface Sp. Then, as shown in FIG. 6, the connecting member 76 is placed in the upper position, the teeth 88 and 89 are engaged, and the regulating member 61 is placed in the locked state.

  Next, as shown in FIG. 7, the operator tilts the lever 73 forward, rotates the operation member 62, releases the engagement of the teeth 88 and 89, and places the regulating member 61 in the unlocked state. . Subsequently, the operator moves the restricting member 61 toward the paper P by continuing to push the lever 73 forward as it is.

  When the operator releases his / her finger from the lever 73 at the position where the regulating surface Sb of the regulating member 61 contacts the rear end surface Sd of the paper P, the connecting member 76 is directed upward by the urging force of the compression spring 64. Moved and placed in the upper position. As a result, the teeth 88 and 89 are engaged, and the regulating member 61 is placed in a locked state. In this manner, the regulating member 61 (rear guide 30) can be positioned on the paper placement unit 28 at a position corresponding to the paper size of the paper P.

  First, without placing the front end of the paper P against the medium reference surface, after placing the paper P on the paper placement unit 28, the lever 73 is tilted forward to place the regulating member 61 in the unlocked state. By continuing to push the lever 73 forward as it is, the paper P can be moved forward, and the front end of the paper P can be abutted against the medium reference surface.

  Thus, in this Embodiment, since the teeth 88 and 89 are engaged on the back surface side of the bottom wall Wb, the mounting surface Sp can be made flat.

  Therefore, when the paper P is set in the paper cassette 22, the rear end of the paper P does not interfere with the teeth 88, so that the paper P is not damaged.

  Even if an external force is applied to the restricting member 61, a moment is generated in the direction in which the teeth 88 and 89 are engaged with each other, so that the engagement of the teeth 88 and 89 is not released. Therefore, the rear guide 30 can be accurately positioned.

  In the present embodiment, in the rear guide 30, the lock member 63 is formed so as to extend through the bottom wall Wb, the meshing portion Rc is formed on the back surface side of the bottom wall Wb, and the teeth 88 and 89 are engaged. The engagement of the teeth 88 and 89 is released, but in the side guide 29 (FIG. 3), the lock member extends through the bottom wall Wb. And a meshing part can be formed in the back surface side of bottom wall Wb.

  In the present embodiment, the printer 10 is described. However, the present invention can be applied to an image forming apparatus such as a copying machine, a facsimile machine, and a multifunction machine.

  In addition, this invention is not limited to the said embodiment, It can change variously based on the meaning of this invention, and does not exclude them from the scope of the present invention.

22 Paper cassette 28 Paper placement part 61 Restriction member 88, 89 Teeth P Paper Sp Placement surface

Claims (9)

(A) a medium placement unit having a placement surface on which a medium is placed;
(B) having a regulating member that is movably arranged in a predetermined direction with respect to the mounting surface and regulates the movement of the medium;
(C) the restricting member includes a first engaging portion;
(D) The medium placing portion includes a second engaging portion that is engaged with the first engaging portion on a surface opposite to the placing surface.
(E) The medium accommodating device, wherein the regulating member is positioned at a predetermined position on the medium placing portion by engaging the first and second engaging portions.   The medium accommodation apparatus according to claim 1, wherein the restriction member includes an operation member for releasing the engagement of the first and second engagement portions on the placement surface side of the medium placement portion. (A) The restriction member includes a biasing member that biases the first engagement portion toward a direction in which the first engagement portion is engaged with the second engagement portion.
(B) The operation member includes an arm that moves the first engagement portion in a direction to release the engagement with the second engagement portion against the urging force of the urging member. 2. The medium accommodating device according to 2. (A) The operation member includes an operation unit formed integrally with the arm,
(B) The medium storage device according to claim 3, wherein the operation member is swung around a rotation shaft disposed between the arm and the operation unit when the operator operates the operation unit.   5. The medium according to claim 3, wherein the restriction member includes a connecting member that extends through the medium placement portion and transmits the movement of the arm from the placement surface side to the opposite side of the placement surface. Containment device.   The medium accommodation apparatus according to claim 5, wherein the connection member includes the first engagement portion on a side opposite to the placement surface. (A) The regulating member includes a bottom surface portion that comes into contact with the placement surface,
(B) The medium accommodating device according to any one of claims 3 to 6, wherein the urging member is a compression spring disposed between the arm and the bottom surface. (A) The restriction member includes a restriction surface for restricting movement of the medium,
(B) The operation portion is disposed on the side opposite to the restriction surface of the restriction member,
(C) The medium accommodating device according to claim 4, wherein the first engagement portion is engaged with the second engagement portion on a restriction surface side of the restriction member.   An image forming apparatus comprising the medium accommodating device according to claim 1.

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