JPH09142674A - Paper feeding cassette - Google Patents

Abstract

PROBLEM TO BE SOLVED: To bring an end fence in contact with the end of a paper sheet all the time and appropriately hold the paper sheet by forming a fence part into such a shape that its face in the paper sheet abuts on the rear end of the paper sheet all the time according to change in inclination angle on the baseplate of the paper sheet. SOLUTION: When the tip end of a baseplate 3 is pushed up by a spring 14 according to reduction in the number of paper sheets 4 and the residual number of the paper sheets 4 is reduced, the baseplate 3 is rotated further so that the rear ends of the paper sheets abut on a boundary part between a vertical extension part 10b and the bottom part 10a of an end fence member 10. However, the end fence 9 has an arc face 10c formed on the boundary part between the vertical extension part 10b and the bottom part 10a, and the arc face 10c is formed into an arc with a claw member 5b set as its center of the circle. When the paper sheets 4 are rotationally turned on the baseplate 3 by turning of the baseplate 3, the rear ends of the paper sheets 4 abut on this arc face 10c so that no clearance is formed in the end fence 9 and the rear end of the paper sheet 4. As a result, the paper sheet 4 is in an engagement state with the claw member 5b all the time.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a paper feed cassette, and more particularly, to a paper feed cassette for accommodating a plurality of paper sheets and separating and feeding the paper sheets one by one.

[0002]

2. Description of the Related Art In a facsimile apparatus, a copying machine, a printer, and the like, a plurality of sheets (recording sheets) are stored in a sheet cassette, and sheets are fed one by one from a sheet cassette by a sheet feed roller to record. Output.

In this paper feed cassette, particularly, one in which the paper to be stored is separated from the uppermost paper and fed one by one by a paper feed roller, a bottom plate for pushing the recording paper upward into the paper feed cassette and this An elastic member such as a compression spring for urging the bottom plate upward is housed. The bottom plate urged by the compression spring brings the recording paper into contact with the paper feed roller, and the paper feed roller causes the topmost recording paper. Are sent out one by one.

That is, the bottom plate is generally provided with arms having holes formed at both ends in the width direction thereof, and a pin penetrating the hole of the arm is attached to the inner surface in the width direction of the sheet feeding cassette. .

The bottom plate is supported in the paper feed cassette so as to be rotatable about this pin at a predetermined angle, and is rotated upward about the pin by the elastic member arranged below the bottom plate. , The paper in the paper feed cassette is in contact with the paper feed roller.

[0006] Claw members are attached to both corners of the upper end of the paper feed cassette on the side for feeding the above-mentioned paper, and the claw members improve the separation performance of the recording paper fed by the paper feed roller. .

Further, an end fence is provided at the rear end of the paper of the paper feeding cassette to prevent the paper on the pivotally inclined bottom plate from being displaced to the rear side.

This end fence has conventionally been generally
A plate-shaped one is used, and it is fixed to the bottom of the paper feed cassette by a ratchet method or screws that fit vertically into the slit formed on the bottom of the paper feed cassette according to the size of the paper in the paper feed cassette. It is fixed to the paper feed cassette by screwing.

However, if the plate-like member is simply fixed to the bottom surface of the paper feed cassette as an end fence, the paper in the paper feed cassette is sequentially fed out, and when the number of paper sheets decreases, the inclination of the bottom plate is reduced accordingly. The slope becomes steep, the distance from the end fence to the claw member becomes long, a gap is generated between the trailing edge of the paper, and the recording paper shifts toward the end fence due to the inclination of the bottom plate. As a result, the leading edge of the sheet comes off the claw member, and jamming or skewing of the recording sheet occurs.

Therefore, in the conventional end fence, an elastic member such as a leaf spring is attached to the paper side surface of the end fence so that no gap is generated between the rear end of the paper and the end fence. ing.

[0011]

However, in such a conventional paper feeding cassette, the plate-like end fence is fixed to the bottom surface of the paper feeding cassette by a ratchet system or a screw system. When changing the fixed position of the end fence according to the size of the paper stored in the paper cassette, remove the end fence from the slit or remove the screw to match the slit or screw hole at the position corresponding to the paper size. There was a problem that it was necessary to reattach it, and setting of the end fence was troublesome.

Further, since the positions where the slits and the screw holes are formed are fixed, it is impossible to delicately set the position of the end fence.

Furthermore, since a plate-shaped end fence is used, it is necessary to attach an elastic member such as a leaf spring to the end fence in order to prevent jams and skews from occurring when the amount of paper becomes small. There was a problem that the cost of the paper feed cassette was high.

Therefore, the invention according to claim 1 is simply
Further, there is provided a paper feed cassette having an end fence capable of finely adjusting the position and always contacting the trailing end of the paper regardless of the number of papers to appropriately hold the paper. Is intended.

According to a second aspect of the present invention, at least the lower end surface of the end fence on the paper side is formed in a predetermined arcuate shape, so that the trailing edge of the paper is always inexpensive and regardless of the number of paper sheets. It is an object of the present invention to provide a sheet feeding cassette provided with an end fence capable of abutting against a sheet and holding a sheet.

It is an object of the present invention to provide a paper feed cassette provided with an end fence that can be easily and steplessly moved to adjust its position.

[0017]

According to another aspect of the invention, there is provided a paper feed cassette in which a bottom plate on which a plurality of sheets of paper are placed is housed in a main body case so as to be rotatable about a predetermined fulcrum. At the same time, by being urged upward by an elastic member arranged at the bottom of the bottom plate, the tilting is performed with the front end portion of the sheet being lifted about the fulcrum, and the tilting of the bottom plate is accompanied. Then, the both corners of the front end of the paper are engaged with the claw members arranged at the front end of the paper, and the rear end of the paper is held by the end fence, and the uppermost paper of the inclined paper is Is a sheet feeding cassette that is separated and conveyed one by one by a sheet feeding roller, wherein the end fence includes a fence portion that holds a rear end portion of the sheet, and the fence portion in a direction substantially perpendicular to a bottom surface of the main body case. Push it so that it can be released A fixing member for fixing the position of the fence portion in the main body case so that the position of the fence portion can be adjusted, and the fence portion has a surface on the paper side according to a change in an inclination angle of the paper on the bottom plate. The above-mentioned object is achieved by being always formed in a shape that abuts on the rear end of the sheet.

Here, the fence portion holds the rear edge of the sheet whose front edge is inclined upward and its rear edge is inclined downward due to the inclination of the bottom plate, so that both corners of the edge of the sheet can be used as claw members. At least the surface on the paper side is formed in a shape that always abuts on the rear end portion of the paper regardless of the inclination angle of the paper.

That is, the bottom plate has an increasing inclination angle as the number of sheets of paper decreases, and generally, as the inclination angle of the bottom plate increases, the length of the sheet in the longitudinal direction becomes shorter, and the rear end portion of the sheet and the fence. There is a tendency to separate from the department. Therefore, the shape of the surface of the fence portion on the paper side is formed to correspond to the change in the length of the paper due to the change in the inclination angle.

The fixing member is formed such that the fence portion is pressed against the bottom surface of the main body case in a substantially vertical direction to fix the position, and the pressing force is released to move and adjust the position.

According to the above construction, the position of the end fence can be adjusted steplessly according to the paper size,
You can properly hold the rear edge of the paper, and
Even if the inclination angle of the paper changes due to the change in the number of paper,
The fence portion can always be brought into contact with the rear end portion of the sheet and the front end portion of the sheet can be engaged with the claw member, so that the separation performance of the sheet can be improved.

In this case, for example, as described in claim 2, in the fence part, the surface on the side of the paper is continuous with the vertically extending part which extends substantially vertically and the vertically extending part. And a circular arc portion formed at a lower end portion of the vertically extending portion and having an arc shape with a predetermined radius centered on a predetermined position on the sheet side.

Here, the vertically extending portion is a portion that holds the trailing edge of the sheet when the number of sheets is large and the inclination angle of the sheet is small. May have. The arcuate portion is a portion that holds the trailing edge of the sheet when the number of sheets is small and the inclination angle of the sheet is large, and when the inclination angle of the sheet changes on the bottom plate,
It is desirable that the sheet is formed in a shape corresponding to the arc shape drawn by the trailing edge of the sheet.

According to the above construction, the rear end of the paper can be always brought into contact with the paper-side surface of the fence section with a simple construction, and a paper feed cassette having a good separation performance can be easily and
It can be manufactured at low cost.

Further, in this case, for example, as described in claim 3, the fixing member is made of rubber having a predetermined rigidity and a predetermined coefficient of friction, and the foot comes into contact with a predetermined portion of the main body case. A member, a connecting member that connects the foot member and the fence portion, and that engages with the bottom surface of the main body case; and is interposed between the connecting member and the foot member, and the foot member is the main body case. And an elastic member that presses the connecting member against the bottom surface of the main body case.

Here, for example, the bottom of the paper feed cassette is
It has a double structure in which slits and the like that are long in the length direction of the paper are formed, and the foot member is fixed in position by abutting on the bottom surface under the paper cassette of the double structure, for example. The fence part is located on the bottom surface above the double-structured paper feed cassette, and the connecting member is a foot member that abuts the bottom bottom surface of the paper feed cassette and the fence part located above the bottom surface. And are engaged with, for example, the bottom surface above the paper feed cassette.

The elastic member is interposed between the connecting member and the foot member, and the foot member and the connecting member are pressed against the lower bottom surface and the upper bottom surface of the paper feed cassette, respectively.
Position the fence part in place. A spring or the like is used for the elastic member, and by releasing the biasing force of the elastic member,
The fence part can be moved.

According to the above construction, the end fence can have a simple structure, and the position of the fence can be adjusted by moving the fence easily and steplessly. The separation performance of the paper feed cassette can be further improved by bringing the rear end portion into more proper contact.

[0029]

Preferred embodiments of the present invention will be described below in detail with reference to the accompanying drawings.

Since the embodiment described below is a preferred embodiment of the present invention, various technically preferable limitations are attached, but the scope of the present invention is particularly limited in the following description. Unless specifically stated to limit the present invention, the present invention is not limited to these embodiments.

1 to 10 are views showing a paper feed cassette to which an embodiment of the paper feed cassette of the present invention is applied.

1 to 3, the paper feed cassette 1 is
The main body case 2 is formed in a box shape having an upper opening, and a bottom plate 3 is disposed on the front side (right side in FIG. 1) which is the paper feeding side in the main body case 2. The bottom plate 3 has a pair of arms 3a and 3b formed on both sides thereof,
It is rotatably supported by a pin (not shown) formed on the body case 2, and a plurality of sheets 4 (see FIGS. 6 and 10) are placed on the bottom plate 3 and the bottom surface 2a of the body case 2. .

A pair of claw members 5a and 5b are provided at the front end of the main body case 2, and the claw members 5a and 5b are provided.
b is engaged with both sides of the front end of the sheet 4 to separate the sheets 4 one by one.

On the rear side of the main body case 2, three slits 6a, 6b, 6c are formed over a predetermined length in the length direction of the paper 4 (feeding direction of the paper 4). That is,
The main body case 2 is integrally formed by pressing a sheet metal, and in this press working, the slit 6a,
The slits 6a, 6b and 6c are formed by notching the plate members 6b and 6c and pressing them downward. Therefore, as shown in FIG. 2 and FIG.
Below the slits 6a, 6b, 6c, the plate member pressed down by this press work is positioned as the foot portion 7 in a protruding state. A foot portion 8 that protrudes downward is formed at the front end portion of the main body case 2 in accordance with the downward protrusion amount of the foot portion 7.

An end fence 9 is attached to the portion where the slits 6a, 6b and 6c are formed.

As shown in FIGS. 4 and 5, the end fence 9 is provided with an end fence member 10, a fixed knob 11, a spring 12, a fixed foot member 13 and the like. As shown in FIG. The member can be disassembled.

The end fence member 10 is formed in a substantially L-shape with a bottom surface portion 10a protruding toward the paper 4 side.
The side surface is formed in a substantially vertical vertical extending portion 10b, and the bent portion between the vertical extending portion 10b and the bottom surface portion 10a has an arcuate arc surface 10c having a predetermined curvature.
Are formed. The arc surface 10c is formed, for example, in an arc shape with the claw members 5a and 5b as the centers of circles.

Further, the lower end portion of the back surface side of the end fence member 10 projects to the back surface side, and the lower end surface thereof is the bottom surface portion 10.
A fixing portion 10d formed in the same plane as the lower end surface of a is formed, and as shown in FIG.
A through hole 10e into which the fixed knob 11 is inserted is formed. Two cutout portions 10f are formed in the outer peripheral portion of the through hole 10e of the fixing portion 10d at positions facing each other. The cutout portion 10f communicates with the through hole 10e, and the upper and lower surfaces of the fixing portion 10d are connected to each other. It is formed in a penetrating state.

The fixed knob 11 is formed in a columnar shape, and a grip portion 11a for rotating the fixed knob 11 is formed on the upper end portion thereof, and the outer peripheral portion of the lower end portion of the fixed knob 11 is At the opposite side of the fixed knob 11,
A pair of projections 11b are formed and the projection 1
The protrusion 11b and the protrusion 90b are spaced apart by a predetermined distance from the 1b.
A pair of protrusions 11c are formed at positions deviated from each other.
The protrusion 11b and the protrusion 11c are formed in a size capable of penetrating the cutout portion 11f of the fixing portion 10d.

The fixed foot member 13 is formed in a plate shape by a member such as hardened rubber which is hard to slip (that is, has a predetermined friction coefficient) and has a predetermined hardness, and is formed into a plate shape. In the center of the upper surface, a pillar 1 that extends vertically
3a are formed.

Although not shown, the fixed knob 11 is also provided.
A hole through which the support column 13a can enter is formed on the lower end surface of the.

Therefore, as shown in FIG. 5, when the spring 12 is attached to the column 13a of the fixed foot member 13, the lower end of the spring 12 is held by the fixed leg member 13, and in this state, the column 13a is fixed to the fixed knob 11. When the fixing knob 11 is inserted into the through hole 10e of the fixing portion 10d of the end fence member 10, the spring 12 urges the fixing knob 11 upward.

As shown in FIGS. 1 to 3, the end fence 9 is attached to the slit 6b at the center of the slits 6a, 6b and 6c.

That is, in order to attach the end fence 9 to the sheet feeding cassette 1, first, the fixed foot member 13 is attached to the support column 13a, and the spring 12 is attached to the foot portion 7. The end fence member 10 is placed on the top, the fence part 10 is directed toward the rear end side of the sheet 4, and the through hole 10e of the fixing part 10d is provided on the pillar 1.
It is placed on the central slit 6b so that it is directly above 3a. In this state, when the protrusion 11b of the fixed knob 11 is aligned with the cutout portion 10f of the fixed portion 10d of the end fence member 10 and the fixed knob 11 is pushed downward, the protrusion 11b penetrates the fixed portion 10d and the slit 6b, When 11c comes into contact with the fixed portion 10d, the fixed knob 11 is rotated by about 90 degrees by the grip portion 11a, and as shown in FIG. 5, the projection 11b is formed on the bottom surface 2a having the slits 6a, 6b, 6c. Engage with.

In this state, the fixed knob 11 has the protrusion 11b.
The fixed portion 1 of the end fence member 10 by the protrusion 11c
0d and the bottom surface 2a are lightly sandwiched to prevent the fixing knob 11 from coming off. In this state,
Since the biasing force of the spring 12 is weak, the end fence 9
Can be lightly moved in the length direction of the paper 4 along the slit 6b.

Next, the fixing knob 11 is rotated to move the protrusion 1
1c is aligned with the cutout portion 10f of the fixing portion 10d, and the fixing knob 11 is pushed further downward, and when the protrusion 11c falls below the lower end surface of the bottom surface 2a, the fixing knob 11 is moved to approximately 90 degrees.
When rotated once, the projection 11c comes into contact with the lower end surface of the bottom surface 2a.

In this state, the end fence 9 is fixed in position by pressing the fixed foot member 13 against the foot portion 7 by the spring 12 and the projection 11b of the fixed knob 11 against the lower end surface of the bottom surface 2a. The fixed portion 10d of the end fence member 10 is connected and fixed to the fixed fixing knob 11, and the end fence member 10 is positionally fixed.

The bottom plate 3 is, as shown in FIG.
A spring 14 disposed below the arms 3a and 3b in front of the arms 3a and 3b urges the spring 1 upward,
By being urged upward by 4, the arm 3a, 3b is rotated about its center, and its front end portion is tilted while being raised upward.

Next, the operation of this embodiment will be described.

When the paper 4 is set in the paper feed cassette 1, a plurality of papers 4 are inserted between the bottom plate 3 and the claw members 5a and 5b as shown in FIG. The spring 14 is pushed down, and the bottom plate 3 pivots in a substantially horizontal direction by pushing down the front side around the arms 3a and 3b as indicated by the arrow in FIG.

At this time, as shown in FIG. 6, the end fence 9 has the vertically extending portion 1 of the end fence member 10.
0b contacts the rear end of the sheet 4 and holds the rear end of the sheet 4.

In this case, when the vertically extending portion 10b is not located at the rear end of the sheet 4, the position of the end fence 9 is adjusted so that the vertical extending portion 10b is located at the rear end of the sheet 4. Abut.

That is, in the fixed state, the end fence 9 has its fixed knob 1 as shown in FIG. 8 (a).
The upper projection 11c of 1 engages with the lower end surface of the bottom surface 2a in which the slits 6a, 6b, 6c are formed, and the spring 12
The projection 11c is pressed against the lower end surface of the bottom surface 2a by the urging force of and the fixed foot member 13 is pressed against the upper surface of the foot portion 7, whereby the end fence 9 is fixed.

Therefore, in order to adjust the position of the end fence 9, the grip portion 11a of the fixed knob 11 is grasped, and the fixed knob 11 is rotated approximately 90 degrees while pushing down the fixed knob 11 to rotate the projection 11c and the bottom surface 2a. Disengage the
As shown in (b), when the protrusion 11c of the fixed knob 11 is aligned with the cutout portion 10f of the fixed portion 10d of the end fence member 10 and the fixed knob 11 is moved upward by the spring 12, the end fence 9 by the spring 12 is moved. The fixation of is released, and the end fence 9 becomes movable.

At this time, the fixing knob 11 is prevented from coming off by the projection 11b on the lower side thereof abutting lightly on the lower end surface of the bottom surface 2a.

In this state, the end fence 9 is moved along the slit 6b, and the vertical extension portion 10b is brought into contact with the rear end portion of the sheet 4 to position the end fence 9. Fixing knob 11 with protrusion 11c
Is pushed down to below the bottom surface 2a, and is rotated by about 90 degrees. Here, when the pushing down of the fixed knob 11 is released, the fixed knob 11 is biased upward by the spring 12, the projection 11c engages with the bottom surface 2a, and the fixed foot member 13 is pressed against the foot portion 7, End fence 9
Is fixed.

Therefore, it is possible to easily and easily adjust the position of the end fence 9 without removing or re-tightening the screw and removing or inserting it from the slit as in the conventional case. Unlike the conventional case, the fixing position of the end fence 9 is not restricted by the screw holes or the slits, and the sheet 4 can be fixed at an appropriate position in accordance with the position of the rear end portion of the sheet 4. The rear end can be held in a more suitable position.

When the paper 4 is set in the paper feed cassette 1 as described above, the rear end of the paper 4 in the paper feed cassette 1 is held by the vertically extending portion 10b of the end fence 9, and the leading end of the paper 4 is held. The parts are regulated by the claw members 5a and 5b, and are appropriately separated one by one by the paper feed roller and sent out.

When the sheets 4 are sequentially fed out from the sheet feeding cassette 1, as shown by the arrow in FIG. 9, the tip of the bottom plate 3 is pushed up by the spring 14 as the number of sheets 4 decreases, and When the remaining number of sheets 4 becomes small, the bottom plate 3 further rotates around the arms 5a and 5b, and as shown in FIG. 10, the rear end portion of the sheet 4 has a vertical vertical extension portion 10b and a horizontal bottom portion. It abuts on the border of 10a.

However, the end fence 9 has an arc surface 10c at the boundary between the vertically extending portion 10b and the bottom portion 10a.
Is formed, and the arcuate surface 10c has the claw members 5a, 5b.
Is formed in an arc shape with the center of the circle as.

Therefore, even if the sheet 4 rotates on the bottom plate 3 as the bottom plate 3 rotates, the rear end of the sheet 4 contacts the arc surface 10c and the end fence 9 and the sheet 4 There is no gap at the end.

As a result, the rear end of the sheet 4 is always properly held by the end fence 9, and even if the inclination angle of the bottom plate 4 becomes large, the sheet 4 is displaced to the rear side and so-called backlash occurs. It can be prevented and is always engaged with the claw members 5a, 5b.

Therefore, even when the remaining number of sheets 4 becomes small, the sheet 4 is set to 1 by the claw members 5a and 5b and the sheet feeding roller.
The sheets can be appropriately separated and sent out, and the separation performance of the paper feed cassette 1 can be improved.

As described above, according to the present embodiment, the position of the end fence 9 can be adjusted easily and easily, and the position of the end fence 9 can be adjusted steplessly. Can be held at an appropriate position to improve the separation performance of the paper 4. Further, even when the paper 4 becomes small, the paper 4 can be formed by the arc surface 10c.
The rear end portion can be always held, backlash can be prevented, and the separation performance of the paper 4 can be further improved.

Although the invention made by the present inventor has been specifically described based on the preferred embodiments, the present invention is not limited to the above, and various modifications can be made without departing from the scope of the invention. It goes without saying that it is possible.

For example, in the above embodiment, in order to fix the end fence member 10, the bottom surface 2a of the sheet feeding cassette 1 is partially indented by pressing to form the foot portion 7, and the foot portion 7 is formed. 7 and the bottom surface 2a, the fixed foot member 1
3 and the spring 12 are housed, and the convex portion 1 of the fixed knob 11
Although 1c is pressed against the lower end surface of the bottom surface 2a, the method of fixing the end fence member 10 is not limited to the above method. For example, the spring 12 is housed inside the fixing knob 11, and the fixing knob 11 is By urging the spring 12 upward, the protrusion 11 is formed on the lower end surface of the bottom surface 2a.
You may make it engage c. This way,
The amount of protrusion of the foot portion 7 can be reduced, and the fixed foot member 13 can be eliminated.

[0067]

According to the paper feeding cassette of the first aspect of the invention, the end fence can be steplessly adjusted in position according to the size of the paper, and the rear end of the paper can be held appropriately. In addition, even if the inclination angle of the paper changes due to the change in the number of paper sheets, the fence part can always be brought into contact with the rear end of the paper and engaged with the claw member, improving the paper separation performance. Can be made.

According to the paper feeding cassette of the second aspect of the invention, with a simple structure, the trailing edge of the paper can be always brought into contact with the paper side surface of the fence portion, and the paper feeding with good separation performance can be achieved. The cassette can be manufactured easily and inexpensively.

According to the paper feeding cassette of the third aspect, the end fence can have a simple structure, and the position of the fence can be adjusted easily and steplessly. It is possible to bring the fence portion into contact with the rear end portion of the paper more appropriately, and to further improve the separation performance of the paper feed cassette.

[Brief description of the drawings]

FIG. 1 is a top view of a paper feed cassette to which an embodiment of the paper feed cassette of the present invention is applied.

FIG. 2 is a side sectional view of the paper feed cassette of FIG.

FIG. 3 is a sectional view taken along the line AA of FIG. 1;

FIG. 4 is an exploded perspective view of the end fence shown in FIG.

5 is a perspective view showing a state where the end fence of FIG. 4 is assembled.

6 is a side sectional view of the paper feed cassette in a state where a large number of papers are stored in the paper feed cassette of FIG.

FIG. 7 is a view showing the operation of the bottom plate in the state of FIG.

FIG. 8 is a diagram showing a fixed state (a) and a movable state (b) when adjusting the position of the end fence.

9 is a side cross-sectional view of the paper feed cassette in a state where the number of remaining sheets of paper in the paper feed cassette in FIG. 1 is small.

FIG. 10 is a view showing the operation of the bottom plate in the state of FIG.

[Explanation of symbols]

 1 Paper cassette 2 Main body case 2a Bottom surface 3a, 3b Arm 4 Paper 5a, 5b Claw member 6a, 6b, 6c Slit 7, 8 Foot part 9 End fence 10 End fence member 10a Bottom part 10b Fence part 10c Arc surface 10d Fixed part 10e Through hole 10f Cutout 11 Fixed knob 11a Grips 11b, 11c Protrusion 12 Spring 13 Fixed foot member 13a Strut 14 Spring

Claims (3)

[Claims] 1. A bottom plate on which a plurality of sheets of paper are placed is accommodated in a main body case so as to be rotatable around a predetermined fulcrum, and is upwardly moved by an elastic member arranged below the bottom plate. By being biased, the front end portion of the sheet is pivotally tilted about the fulcrum in a state of being lifted, and the claw member provided at the front end portion of the sheet is rotated by the pivotal inclination of the bottom plate. A paper feed cassette in which both corners of the front end of the paper are engaged, the rear end of the paper is held by an end fence, and the uppermost paper of the inclined paper is separated and conveyed one by one by a paper feed roller. There, the end fence is a fence portion that holds the trailing end portion of the paper, and the fence portion is releasably pressed in a substantially vertical direction on the bottom surface of the main body case to adjust the position of the fence portion. In the body case The fence part has a shape in which the surface on the paper side is always in contact with the rear end of the paper according to a change in the inclination angle of the paper on the bottom plate. A paper feed cassette characterized by being formed. 2. The fence portion is formed such that a surface of the paper sheet side is a vertical extension portion that extends substantially vertically and a lower end portion of the vertical extension portion that is continuous with the vertical extension portion, The sheet feeding cassette according to claim 1, further comprising: an arc portion formed in an arc shape having a predetermined radius centered on a predetermined position on the sheet side. 3. The fixing member is made of rubber having a predetermined rigidity and a predetermined coefficient of friction,
A foot member that comes into contact with a predetermined portion of the main body case, a connecting member that connects the foot member and the fence portion and engages with a bottom surface of the main body case, and an interposing member between the connecting member and the foot member. The sheet feeding cassette according to claim 1 or 2, further comprising: an elastic member that is mounted and presses the foot member against the main body case, and presses the connecting member against a bottom surface of the main body case.