KR20180049528A - Apparatus for preventing paper-jam - Google Patents

Abstract

The present invention relates to an apparatus for preventing paper jam. According to the present invention, the apparatus comprises a pressurization means that is installed in a feeding tray, and is in contact with a side portion of paper to be pressurized. According to the present invention, as an edge of paper accommodated in the feeding tray is pressurized to control a frictional force, one sheet of paper is fed at a time to prevent paper jam when using a printing machine or a copy machine.

Description

[0001] APPARATUS FOR PREVENTING PAPER-JAM [0002]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a printing machine or a copying machine, and more particularly, to a paper jam preventing device used in a printing machine or a copying machine.

Generally, a printing apparatus or a copying machine is provided with a paper feed tray for feeding paper, and a paper is placed on an upper portion of the paper feed tray. A roller or a feeder is disposed on one side of the paper feeder to press the paper and to rotate the roller or the feeder for printing or copying from the paper positioned at the uppermost position Is fed.

Japanese Patent No. 0868715 (hereinafter referred to as Patent Document 1) discloses a paper sheet delivery device for delivering paper sheets, such as banknotes, deposited in a storage section one sheet at a time.

The above-mentioned Patent Document 1 includes a first and a second delivery portion, each of which has a pickup roller attached to two or more independent independent shafts disposed on the left and right sides so as to be orthogonal to the conveying direction of the paper, And the first and second feeding parts are connected to each other by a plate-like or bar-shaped elastic supporting member, and the height position of the elastic supporting member is detected Even if the uppermost surface of the accumulated paper sheets has a height difference such as undulations or warpages, the pickup rollers on both the left and right sides can be brought into contact with the paper sheet to be fed.

However, in the patent document 1, when the force pressing the paper by the roller or the feeder is not constant, or when friction between the paper and the paper due to static electricity or other physical force occurs, the paper may not be fed one by one and plural sheets may be fed at a time Paper jams are caused.

KR 10-0868715 B1

SUMMARY OF THE INVENTION It is an object of the present invention to provide a paper jam prevention device for preventing jamming of paper fed from a paper feeder when using a printing machine or a copying machine.

Another object of the present invention is to provide a paper jam preventing device of simple structure so as not to interfere with the paper feeding by preventing the rotation of the pressing portion for pressing the side portion of the paper.

According to an aspect of the present invention, there is provided a paper jam prevention apparatus comprising: a paper jam preventing member disposed in a paper feed tray such that paper is disposed thereon, A paper support including a part; A support disposed on one side of the paper support; And a pressing part which is disposed on one side of the paper support so as to form an acute angle upward from the supporting part toward the paper and presses while abutting against the upper end of the side of the paper and is movable according to the movement of the supporting part The support portion includes a first support portion disposed below the paper support and extending from the pressurizing portion; A refracting portion disposed below the paper support and extending to be refracted from the first supporting portion; And a second support portion disposed below the paper support and extending from the refracting portion toward the outside of the container support, wherein the support piece is a through hole capable of moving through the first support portion or the second support portion, .

Preferably, each of the supporting portion and the pressing portion is provided, and each of the plurality of supporting portions or each of the plurality of pressing portions may be disposed to face each other about the paper support.

More preferably, the plurality of supports may be connected to each other by an elastic member.

More preferably, the paper support may further include an elastic guide portion extending downwardly and disposed between the plurality of support portions, a through hole through which the elastic member passes, and an elastic guide portion for guiding the elastic member.

More preferably, the elastic member may be a tension coil spring.

Preferably, the third support portion and the fourth support portion are disposed to face the first support portion and the second support portion with respect to the paper support, respectively; And a vertical pressing part which is arranged to face the pressing part with respect to the paper support and extends vertically upward from the third supporting part.

Preferably, a stopper extending from the refraction portion; And an elastic member positioned between the stopper and the support piece and penetrating the first support portion and the second support portion, respectively.

Preferably, the paper support further includes an avoidance groove formed to prevent interference with the pressing portion.

Preferably, at least some of the first support portion and the second support portion may be included in any imaginary plane.

More preferably, the first support portion and the second support portion may be included in a virtual plane parallel to the paper support.

Preferably, the pressing portion and the supporting portion may have a prismatic shape to prevent rotation.

Preferably, the pressing portion may further include a friction generating portion for generating friction with the paper on the outer surface.

More preferably, the friction generating portion may be an elastic material formed of rubber or silicone.

Preferably, the pressing portion may further include a handle portion that forms an obtuse angle at an end and extends away from the side of the sheet on a virtual plane of the sheet.

The paper support may further include a ground unit that removes static electricity between the paper sheets by moving electric charges existing on the paper sheet.

According to an aspect of the present invention, there is provided a paper jam prevention apparatus comprising: a paper jam preventing member disposed in a paper feed tray such that paper is disposed thereon, A paper support including a part; A support portion extending from the pressing portion and disposed on one side of the paper support; And a pressing part which is disposed on one side of the paper support so as to form an acute angle upward from the supporting part toward the paper and presses while abutting against the upper end of the side of the paper and is movable according to the movement of the supporting part A cross section of the support section includes a vertex at least a part of which has a curvature or at least a part of which is angled, and the support piece is formed with a through hole in a shape corresponding to the cross section of the support section so that the support section can be moved through the support section .

According to the present invention, by pressing the corners of the sheets of paper accommodated in the paper feeder to adjust the frictional force, one sheet of paper is fed at one time, thereby preventing paper jamming in the use of a printing machine or a copying machine.

Since the supporting part includes the first supporting part, the refracting part and the second supporting part and is supported by the supporting piece, it is easy to prevent rotation of the pressing part, and the supporting part can be easily manufactured by a simple structure.

Since the present invention can be manufactured in correspondence with the size and shape of the feeder, any printer or a feeder of the copying machine can be installed.

1 is a perspective view of a paper jam prevention device according to a first embodiment of the present invention.
2 is a front view of the paper jam prevention apparatus according to the first embodiment of the present invention.
3 is a perspective view of the paper jam preventing device according to the first embodiment of the present invention, viewed from the bottom.
4 is a plan view of the paper jam prevention device according to the first embodiment of the present invention.
5 (a) to 5 (b) are views showing rotation preventing means for preventing rotation of the support portion and the pressing portion in the paper jam prevention device according to the first embodiment of the present invention.
6 is a view showing a modification of the elastic member of the paper jam prevention device according to the first embodiment of the present invention.
7 is a front view of the paper jam prevention apparatus according to the second embodiment of the present invention.

Hereinafter, preferred embodiments according to the present invention will be described in detail with reference to the accompanying drawings. It should be noted that, in adding reference numerals to the constituent elements of the drawings, the same constituent elements are denoted by the same reference symbols as possible even if they are shown in different drawings. In the following description of the embodiments of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the difference that the embodiments of the present invention are not conclusive.

In describing the components of the embodiment of the present invention, terms such as first, second, A, B, (a), and (b) may be used. These terms are intended to distinguish the constituent elements from other constituent elements, and the terms do not limit the nature, order or order of the constituent elements. When a component is described as being "connected", "coupled", or "connected" to another component, the component may be directly connected or connected to the other component, Quot; may be " connected, "" coupled, " or " connected. &Quot;

≪ Embodiment 1 >

The paper jam prevention device according to the first embodiment of the present invention is applied to a paper feeder for continuously feeding paper, such as a printer, a copying machine, or a multifunction machine.

Hereinafter, a paper jam preventing apparatus according to a first embodiment of the present invention will be described with reference to the accompanying drawings.

FIG. 1 is a perspective view of a paper jam preventing device according to a first embodiment of the present invention, FIG. 2 is a front view of the paper jam preventing device according to the first embodiment of the present invention, FIG. 3 is a cross- FIG. 4 is a plan view of the paper jam prevention device according to the first embodiment of the present invention. FIG. 4 is a perspective view of the paper jam prevention device according to the first embodiment of the present invention.

1 to 3, the paper jam prevention apparatus according to the first embodiment of the present invention may include a paper support 100, a support unit 200, and a pressing unit 300. The paper support 100, the support portion 200, and the pressing portion 300 are installed inside the paper feed tray.

The paper support 100 may be disposed inside the paper tray so that the paper P is disposed on the upper side. And a support piece 110 protruding downward and supported from a feeder.

Although not shown in the drawings, the paper support 100 may further include a ground unit (not shown) according to the manufacturer's intention. The ground portion is installed in the paper support 100 to remove the static electricity between the paper sheets by moving the electric charge existing in the paper sheet P, thereby reducing the frictional force between the paper sheets.

Referring to FIGS. 1 to 4, the paper support 100 may be formed as a plate including a flat surface so that the paper P is placed on the paper support 100. The paper support 100 may include a support piece 110 and an elastic guide unit 130 on the lower side. The support piece 110 and the elastic guide part 130 may extend integrally with the paper support 100. However, the support piece 110 and the elastic guide part 130 may be provided under the paper support 100 in a separate structure. A concave avoiding groove 120 may be formed on the side of the paper support 100 to prevent interference with a pressing part 300, which will be described later. The supporting piece 110 may be formed with a through hole 111 so that the supporting piece 110 can be moved through a support portion to be described later.

The support unit 200 may be disposed on one side of the paper support 100. Referring to the drawings, it is preferable that the support portion 200 is disposed below the paper support 100. Although the support portion 200 is illustrated as being mounted on the paper support 100, it is also possible to directly mount the support portion 100 on the bottom surface of the paper feeder, (Not shown) may be formed to accommodate the support portion 200.

The supporting part 200 may include a first supporting part 210, a refracting part 220 and a second supporting part 230.

The first support portion 210 may extend from the lower side of the pressing portion 300.

The refracting portion 220 may extend from the first supporting portion 210.

The second support part 230 may extend from the refracting part 220 toward the outside of the container support 100.

The first support portion 210 and the second support portion 230 may be disposed parallel to each other and may penetrate the through hole 111 of the support piece 110 extending downward from the paper support 100. That is, the supporting part 200 can be supported by the supporting piece 110 by passing through the through hole 111. [ The through hole 111 of the support piece 110 may be in the form of a slit through which the first support portion 210 and the second support portion 230 can penetrate at a time and the first support portion 210 and the second support portion 230 may be slit- (Not shown) may be formed on the supporting piece 110 so as to penetrate through the supporting pieces 110, respectively.

The first support portion 210, the refraction portion 220, and the second support portion 230 may be disposed below the paper support 100. The first support part 210 and the second support part 230 support the pressing part 300 to be described later on the basis of the paper support 100 so as not to rotate.

The first support portion 210 and the second support portion 230 may be disposed so that at least some of them are included in any virtual plane. Also, the first support part 210, the refraction part 220, and the second support part 230 may be arranged to be located on the same virtual plane. Another substantially same plane including the first supporting portion 210 and the refracting portion 220 and the second supporting portion 230 may be parallel to the paper support 100. However, if the first supporting part 210, the refracting part 220 and the second supporting part 230 together with the pressing part 300 described later are prevented from rotating relative to the paper support 100, the shape, arrangement or parallelism Is not particularly limited. For example, the refracting portion 220 may not be included in a virtual plane including the first supporting portion 210 and the second supporting portion 230, but may be bent so as to protrude from the imaginary plane. Various forms can be provided accordingly.

5A to 5B are views showing rotation preventing means for preventing rotation of the support portion and the pressing portion in the paper jam prevention device according to the first embodiment of the present invention.

5A to 5B, in the first embodiment of the present invention, various rotation preventing means are provided to prevent rotation of the support unit 200 or the pressing unit 300 .

For example, referring to FIG. 5A, the supporting part 200 of the paper jam preventing device according to the first embodiment of the present invention is bent at least once, and the through hole 111 And the support portions 200 corresponding to both sides of the bent portion pass through the through holes 111 having different heights, so that rotation can be prevented.

5 (b), the pressing portion 300 of the paper jam preventing device according to the first embodiment of the present invention is formed in a prismatic shape, and the supporting portion 200 also has the same shape as the pressing portion 300 And can be extended to the pressing portion 300. [ The through hole 111 of the support piece 110 also has a shape corresponding to the outer surface of the prismatic support portion 200. The support portion 200 and the through hole 111 are engaged with each other, Can be prevented.

The anti-rotation means shown in FIGS. 5A and 5B are only examples for implementing the first embodiment of the present invention, and the present invention is not limited to the above-mentioned embodiments, and various changes and applications This is possible.

A pressing part 300 may be provided on one side of the paper support 100. Although not shown in the figure, a paper (P), which is provided on the other side of the paper support 100 and is rotated by a feeder, is pressed one by one from the paper P located on the uppermost side of the paper support 100, And friction to the printing machine or the copying machine or the multifunction machine. At this time, the paper can be elastically supported by an elastic member (not shown) on the lower side of the paper support 100 so that the upper surface of the feeder and the paper P come into contact with each other, It is also possible that an elastic member (not shown) is provided so that the upper surface of the paper P comes into contact with the feeder. This is not particularly limited in the present invention, but may be selected by the manufacturer.

As shown in FIGS. 1 to 4, a plurality of support portions 200 and pressing portions 300 may be provided. At this time, each of the plurality of supporting portions 200 or the plurality of pressing portions 300 may be arranged to be opposed to each other with the paper support 100 as a center.

The pressing portion 300 may be installed at one side of the paper support 100. The pressurizing unit 300 can press the paper P by contacting the side of the paper P accommodated in the paper feeder. The paper P is disposed above the paper support 100 and the pressing unit 300 can press the side of the paper P in the longitudinal direction or the width direction of the disposed paper P. [ In addition, since each of the sheets P composed of a plurality of sheets placed on the upper part of the feeder does not reach a thickness of 1 mm, the pressurizing unit 300 can press the plurality of sheets P, The pressure can be simultaneously applied.

The pressing portion 300 can be extended to the support portion 200. More specifically, the pressing portion 300 and the supporting portion 200 are prepared in the form of rods, respectively, and the ends of the pressing portion 300 and the supporting portion 200 can be extended and bent. The pressing portion 300 may be bent and extended from the supporting portion 200 upward to form an acute angle with the supporting portion 200. The pressing part 300 may be integrally formed with the supporting part 200 but the pressing part 300 and the supporting part 200 may be separated from each other according to the manufacturer's intention. A plurality of pressing portions 300 may be disposed. To be more specific, a plurality of pressurizing units 300 may be disposed so as to face each other with the paper P accommodated in the paper support 100 interposed therebetween. On the other hand, when a wall surface of the paper feeder guides the paper, the pressing portion 300 may be provided so as to face the wall surface of the paper feeder with the paper P therebetween.

The pressing portion 300 may further include a friction generating portion 310 disposed on the outer surface. The friction generating portion 310 is preferably made of an elastic material, and most preferably formed of rubber or silicon. The friction generating portion 310 is in contact with the side portion of the paper P and generates friction with the paper P.

A handle 320 may be provided at an end of the pressing portion 300. That is, one end of the pressing portion 300 may extend to the first supporting portion 210, and the other end of the pressing portion 300 may extend to the handle 320. The grip portion 320 may extend upward from the end of the pressing portion 300 or in a direction away from the paper P. [ The grip portion 320 forms an obtuse angle with the pressing portion 300 at an end and can extend to the side of the paper P on a virtual plane of the paper.

In order to replenish the paper P to the paper support 100, the pressing portion 300 must be pulled away from the side of the paper P on the imaginary plane of the paper P, And a handle 320 may be further provided. Although the friction generating part 310 is not shown on the outer surface of the grip part 320 because the friction generating part 310 is formed on the outer surface of the grip part 320 at the outer surface of the pressing part 300 Or may be extended. The user grips the handle 320 and presses the pressing unit 300 and the paper P or the pressing unit 300 and the paper support 100 in a state that the plurality of the grips 320 are converged toward the paper support 100. [ It is easy to fill the paper P into the paper support 100 after separating the paper 100 from the paper.

Referring to FIGS. 1 to 3, the plurality of support portions 200 facing each other may further include an elastic member 500 connected to pull each other. In detail, the elastic member 500 can connect each of the refracting portions 220 constituting the plurality of supporting portions 200. FIG. At this time, the paper support 100 may include an elastic guide part 130 extending downward, and the elastic guide part 130 may be formed with a through hole 131 through which the elastic member 500 passes. The elastic member 500 is preferably a tension coil spring. The pressing portion 300 described later can press the side portion of the paper P by the tensile force of the elastic member 500. [

6 is a view showing a modification of the elastic member of the paper jam prevention device according to the first embodiment of the present invention.

Referring to FIG. 6, the paper jam prevention apparatus according to the first embodiment of the present invention may further include a stopper 221 and an elastic member 510.

The stopper 221 may extend from the refracting portion 220 and is preferably provided in parallel with the supporting piece 110 so that the refracting portion 220 and the first supporting portion 210 or the refracting portion 220 and the second May be disposed corresponding to the point where the support portion 230 meets. Preferably, the stopper 221 is spaced apart from the paper support 100.

At this time, the elastic member 510 may be disposed between the support piece 110 and the stopper 221. That is, the elastic member 510 may be disposed on the outer surface of the first support portion 210 and the outer surface of the second support portion 230 so that the first support portion 210 and the second support portion 230 pass through. Further, the elastic member 510 is formed of a compression coil spring, so that the pressing portion 300 can press the side portion of the paper P by the force of opening between the supporting piece 110 and the stopper 221.

Hereinafter, the operation of the paper jam prevention device according to the first embodiment of the present invention will be described.

First, the user mounts the paper jam prevention device according to the first embodiment of the present invention in the paper feed tray.

The paper P is placed on the paper support 100 after the gripping portions 320 facing each other are gripped to open the plurality of pressing portions 300. The pressing portion 300 is rotated by the first supporting portion 210, the second supporting portion 230 and the through hole 111 even if the direction of the opening is changed when the user opens the space between the plurality of pressing portions 300. [ And the support part 200 can slide in parallel with the paper support 100 according to the arrangement of the support part 110 and the through hole 111. [

Then, when the user places the grip 320, the plurality of pressing portions 300 are brought close to each other by the elastic member 500, and the upper end of the side portion of the paper P is contacted and pressed.

At this time, the sheets of paper P which are in contact with the plurality of pushing portions 300 can be spaced apart from each other, whereby the frictional force between one sheet of paper P and another sheet of paper P adjacent thereto can be reduced.

Thereafter, when a printing machine, a copying machine or a multifunction machine is used by the user's selection, the paper P of the paper feed tray is supplied. That is, a roller (or a feeder) located on one side of the paper P disposed on the paper feeder presses one end of the paper P, and the roller rotates to cause friction between the roller and the paper P The topmost sheet of paper (P) received in the tray is fed.

Here, the paper P contained in the paper feeder is referred to as a first paper, a second paper, a third paper or the like from the top to the bottom, and the frictional force between the first paper and the roller is denoted by A, the frictional force between the first paper and the second paper The frictional force between the first paper and the friction generating part 310 is denoted by C and the frictional force between the second paper and the friction generating part 310 is denoted by D, ≫ B ". At this time, A is always larger than B or C or D, and C and D are almost similar in size. Therefore, even when the frictional force B between the first and second paper sheets increases due to the roller pressing the first paper sheet, the frictional force (C) 2 The paper is prevented from moving. Further, the frictional force B is reduced by the partial pressure between the first paper and the second paper due to the pressure of the pressurizing unit 300, and the paper support 100 has a ground portion (not shown) The frictional force B between the first paper and the second paper is also reduced so that feeding from the paper P located at the uppermost position is easy.

Thereafter, when the paper P accommodated in the paper feeder is consumed and reduced from its height h1 to h2, the plurality of pressing portions 300 are brought close to each other by the elastic member 500 (see Fig. 2). Even though the plurality of pushing portions 300 are moved close to each other, since the avoidance recesses 120 are formed in the paper support 100, interference between the pushing portion 300 and the paper support 100 is prevented. For example, even when there are two sheets of paper P disposed on the upper portion of the paper support 100, the pressing portion 120 is prevented from interference with the paper support 100 by the avoidance recesses 120, (120) can sufficiently press the edge of the paper (P).

≪ Embodiment 2 >

The paper jam prevention device according to the second embodiment of the present invention is applied to a paper feeder for continuously feeding paper, such as a printer, a copier, or a multifunction machine.

Hereinafter, a paper jam preventing apparatus according to a second embodiment of the present invention will be described with reference to the accompanying drawings. In the second embodiment of the present invention, the same components as those of the first embodiment are denoted by the same reference numerals, and a description overlapping with the first embodiment will be omitted.

7 is a perspective view of a paper jam preventing device according to a second embodiment of the present invention. 7, the vertical pressing portion 400 of the plurality of pressing portions 300 and the handle portion 420 extending therefrom are perpendicular to the upper surface of the bottom of the feeder W, Which is different from the first embodiment. At this time, the vertical pressing part 400 may be provided with a friction generating part 410 on its outer surface.

The second embodiment of the present invention is applied to a case where the paper P guides the paper P in a state where the paper P is positioned on the wall surface of the paper tray W.

Therefore, the vertical pressing part 400 and the grip part 420 are formed parallel to the wall surface of the paper tray W, thereby preventing interference with the paper tray W. At this time, since the vertical pressing part 400 and the grip part 420 are vertically extended from the bottom of the feeder, it does not press the paper P located on the relatively upper side among the arranged paper sheets P, The pressing portion 400 presses the entire edges of the disposed paper P as a whole and frictional force may be present at each edge of the paper P arranged with the friction generating portion 410. [

≪ Third Embodiment >

Hereinafter, a paper jam preventing apparatus according to a third embodiment of the present invention will be described. In the third embodiment of the present invention, the same components as those of the first embodiment or the second embodiment are denoted by the same reference numerals and the description overlapping with the first embodiment or the second embodiment will be omitted.

The paper jam prevention apparatus according to the third embodiment of the present invention differs from the first or second embodiment in that the cross section of the support section 200 is prevented from rotating and does not include the refraction section 250 have.

The support portion 200 may have a curvature at least in a section. Or the support portion 200 may include a vertically bent portion at least a part of which is angled. For example, the cross section of the support portion 200 may be semicircular or elliptical or a shape including a nip portion.

The through hole 111 may be formed in the support piece 110 in a shape corresponding to the end surface of the support part 200 so that the support part 200 can pass through the through hole.

Therefore, the support portion 200 can be prevented from rotating relative to the paper support 100.

The present invention is not limited to the above-described embodiment, and the above-described embodiments may be modified or integrated with each other. It will be understood by those of ordinary skill in the art that various changes in form and details may be made therein without departing from the spirit and scope of the present invention.

100: paper support 110:
111: through hole 120: avoiding groove
130: elastic guide part 131: through hole
200: Support part 210: First support part
220: refracting portion 221: stopper
230: second support part 240: third support part
250: refracting portion 260: fourth supporting portion
300: pressing portion 310: friction generating portion
320: handle portion 400: vertical pressing portion
410: Friction generating part 420: Handle part
500, 510: elastic member
P: Paper W: Feeder

Claims (16)

A paper support which is disposed inside the paper supply tray so as to place the paper thereon and includes a support piece projecting downwardly from the paper feeder;
A support disposed on one side of the paper support; And
And a pressing part which is disposed at one side of the paper support so as to form an acute angle upward from the support part toward the paper and presses while abutting against the upper end of the side of the paper and is movable according to the movement of the support part,
The support portion
A first support portion disposed below the paper support and extending from the pressing portion;
A refracting portion disposed below the paper support and extending to be refracted from the first supporting portion; And
And a second support portion disposed below the paper support and extending from the refracting portion toward an outer side of the container support,
Wherein the support piece has a through hole through which the first support portion or the second support portion can be moved.
The method according to claim 1,
Wherein a plurality of support portions and a plurality of pressing portions are provided, and each of the plurality of support portions or each of the plurality of pressing portions is arranged to be opposed to each other with respect to the paper support.
The method of claim 2,
Wherein the plurality of supports are connected to each other by an elastic member so as to be pulled to each other.
The method of claim 3,
The paper-
An elastic guide portion which extends downward and is disposed between the plurality of support portions, a through hole through which the elastic member passes, and guides the elastic member;
Further comprising a paper jam preventing device for jamming the paper jam.
The method of claim 3,
Wherein the elastic member is a tension coil spring.
The method according to claim 1,
A third support portion and a fourth support portion disposed opposite to the first support portion and the second support portion with respect to the paper support, respectively;
A vertical pressing portion which is disposed to face the pressing portion with the paper support in the center and extends vertically upward from the third supporting portion;
Further comprising a paper jam preventing device for jamming the paper jam.
The method according to claim 1,
A stopper extending from the refracting portion; And
An elastic member positioned between the stopper and the support piece and penetrating the first support portion and the second support portion, respectively;
Further comprising a paper jam preventing device for jamming the paper jam.
The method according to claim 1,
The paper-
Further comprising an avoidance groove formed to prevent interference with the pressing portion.
The method according to claim 1,
Wherein at least some of the first supporting portion and the second supporting portion are included in any imaginary plane.
The method of claim 9,
Wherein the first support portion and the second support portion are included in a virtual plane parallel to the paper support.
The method according to claim 1,
Wherein the pressing portion and the supporting portion are prismatic to prevent rotation.
The method according to claim 1,
The pressing portion
A friction generating portion for generating friction with the paper on the outer surface;
Further comprising a paper jam preventing device for jamming the paper jam.
The method of claim 12,
Wherein the friction generating portion is an elastic material formed of rubber or silicone.
The method according to claim 1,
The pressing portion
A handle portion forming an obtuse angle at an end and extending away from the side of the sheet on a virtual plane of the sheet;
Further comprising a paper jam preventing device for jamming the paper jam.
The method according to claim 1,
The paper-
A ground unit which removes static electricity between the sheets by moving charges present on the sheet;
Further comprising a paper jam preventing device for jamming the paper jam.
A paper support which is disposed inside the paper supply tray so as to place the paper thereon and includes a support piece projecting downwardly from the paper feeder;
A support portion extending from the pressing portion and disposed on one side of the paper support; And
And a pressing part which is disposed at one side of the paper support so as to form an acute angle upward from the support part toward the paper and presses while abutting against the upper end of the side of the paper and is movable according to the movement of the support part,
Wherein the cross section of the support portion includes a vertically bent portion at least a portion of which has a curvature or is at least partially angled,
Wherein the supporting piece has a through hole formed in a shape corresponding to an end surface of the supporting part so that the supporting part can move through the supporting part.

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