JP2001039550A - Sheet material loading device, image reading device, and image forming device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To perform a smooth feeding operation even of thin and light sheet material by providing at least one or more projections on a sheet material loading surface tilting so that the downstream in the conveying direction of the sheet material is lower than the upstream in the conveying direction of the sheet material. SOLUTION: When a document feeding tray 3 is installed in a state in which the downstream in the conveying direction of sheets is tilted downward, a plurality of openings are formed in a document loading surface 50 as a sheet material loading surface, roller members 100 as rotating members are arranged so as to projecting its part from each opening, and this is operated as a projection. Each roller member 100 rotatably supports both ends of a central shaft provided for each member on a support wall integrated with the document feeding tray 3. The lower edges of side regulating plates 51 provided on both sides of the tray 3 form a notch for preventing interference between the roller member 100 and the side regulating plates 51 when the side regulating plates are slid in the width direction of sheets.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an image forming apparatus such as a copying machine or a printer for forming an image on a recording medium or an image reading apparatus such as a scanner for reading an image of an original. The present invention relates to a sheet material stacking device for stacking sheet materials, and an image reading apparatus and an image forming apparatus including such a sheet material stacking device.

[0002]

2. Description of the Related Art FIGS.
This will be described with reference to FIG. First, FIG. 15 shows a cross-sectional view of a copying machine as a conventional image forming apparatus.

In FIG. 15, a copying machine 1 transports a document 2 from a document feed tray 3 to a predetermined position on a platen glass 4, scans a document image by an optical reading device 5, and then places the document image on a document discharge tray 6. Document feeder device (hereinafter, also simply referred to as ADF) for discharging the original 2 to
Seven.

The document feeder device 7 has a paper feed roller 8 for feeding the originals 2 on the original feed tray 3 one by one and a separation pad 9 for preventing double feeding of the originals 2. The document 2 is reliably separated one by one and fed to the nip portion of the pair of registration rollers 10 and 11 with the cooperation of.

The document 2 which has reached the nip portion between the pair of registration rollers 10 and 11 is sent to the entrance 14 of the transport belt 13 after synchronizing with the main body 12, and thereafter, is fed onto the platen glass 4 by the transport belt 13. It is transported to a predetermined position.

[0006] Then, the original 2 is scanned on the image by the optical reading device 5 and then discharged onto the original discharge tray 6 by the discharge rollers 15 and 16.

Next, the main body 12 will be described. The recording paper 20 is separated from the paper feed tray 21 one by one in cooperation with a paper feed roller 22 and a separation pad 23 and then fed to a nip portion between a pair of registration rollers 24 and 25.

The original image scanned by the optical reading device 5 is developed on the photosensitive drum 2 using toner powder.
The recording paper 20 is sent between the photosensitive drum 26 and the transfer charger 27 while being synchronized with the image on the transfer charger 6.
7, the image is transferred to the upper surface.

Thereafter, the recording paper 20 is transported to the transport belt 28.
Is fed to the nip between the heat fixing roller pairs 29 and 30 to fix the image, and then discharged onto the paper discharge tray 33 by the paper discharge roller pairs 31 and 32.

Next, the paper feed roller 8 and the separation pad 9 of the document feeder device 7 and the paper feed roller 22 on the main body side.
The detailed configuration of the separation pad 23 will be described using the document feeder device 7 as an example. This is the same on the main body side.

First, the paper feed roller portion of the conventional copying machine shown in FIG. 15 will be described in more detail with reference to FIG. FIG. 16 is a detailed cross-sectional view of the paper feed roller portion of the conventional copying machine shown in FIG.

In FIG. 16, reference numeral 40 denotes the document feed tray 3
A rocking plate having a document pressing member 41 for pressing the leading end of the upper document 2 against the paper feed roller 8.
The frame 43 is swingably supported in the direction B, and is urged in the direction A by a spring member (not shown). The urging force presses the leading end of the document 2 against the paper feed roller 8.

Reference numeral 44 denotes a separation pad holder which is supported by the frame 43 so as to be swingable in the C and D directions about a shaft 45 and is urged in the C direction by a spring 46. Due to this urging force, the separation pad holder 44 is pressed against the paper feed roller 8 via the separation pad 9 fixed on the separation pad holder 44.

When the paper feed roller 8 starts to rotate in the direction E, several sheets of the original 2 are fed to the nip entrance between the paper feed roller 8 and the separation pad 9, where the original 2 is moved by one.
The sheets are reliably separated one by one and fed to the registration roller pair.

As described above, the surface of the separation pad 9 and the paper feed roller 8
The friction coefficient between the original and the front side must be higher than the friction coefficient between the originals, and about μ = 1 or more is necessary in consideration of the type of paper used as the original, environmental conditions such as temperature and humidity. .

Next, referring to FIGS. 17 and 18, FIG.
5 will be described in more detail. FIG. 17 is a cross-sectional view of the paper feed tray portion of the conventional copying machine shown in FIG. 15, and FIG.
5 is a plan view of a paper feed tray section of the conventional copying machine shown in FIG.

The document stacking surface 50 of the document feed tray 3 has slide grooves 52 and 53 (FIG. 1) perpendicular to the document transport direction.
8) are provided, and the document side regulating plates 51, 5
1a and 51b can be slid in the width direction of the document while being linked with each other by a rack, a pinion, or the like. Thus, the position of the document 2 in the width direction is fixed to prevent skew.

As shown in FIG. 17, the document feed tray 3 is given an angle of .theta. From the horizontal, and when the document 2 is placed on the document loading surface 50 of the document feed tray 3, the document 2 A document pressing member 41 having its leading end portion held down on the upper surface of the paper feed roller 8 and the swinging plate 40 by sliding down the slope of the loading surface 50.
To reach the nip.

The swinging plate 40 holds the original 2 in the original feeding tray 3.
When it is not placed on the top, the swinging tip is lowered in the direction B in FIG. 16, and the paper detection position is shifted from the swinging plate 40 in the document width direction in the vicinity of the shaft 42 serving as the swinging center. When a sensor (not shown) detects that the leading end of the document 2 has slipped down on the document loading surface, the sensor 2
Is pressed against the paper feed roller 8.

The document loading surface 50 of the document feed tray 3 is made of a plate-like member made of a resin material, and is subjected to a graining process for aesthetic appearance.

[0021]

However, the above-described prior art has a problem that the sheet material may not be fed smoothly.

Hereinafter, this problem will be described with reference to the prior art described with reference to FIGS. 15 to 18 as an example.

In the above-mentioned prior art, since the member forming the document stacking surface 50 of the document feed tray 3 is a flat plate made of resin, the contact surface with the document 2 is wide, and the graining process for aesthetics is performed. Since the frictional resistance between the original 2 and the original loading surface 50 is higher than that of the smooth surface, the original 2
In the case of sheets and thin paper such as 52 g paper, for example, in FIG. 17, when a small angle θ is given, the document 2 may not slide down on the document loading surface 50.

This is due to the weight of the original 2. That is, when the component force parallel to the document stacking surface due to its own weight does not exceed the frictional resistance, the sheet material such as the document 2 may not slide down on the document stacking surface 50.

In this case, since the above-mentioned paper detection sensor does not detect the leading edge of the document, the ADF 7 does not operate, and the scanning is immediately performed by the optical reading device 5, so that the operability cannot be improved.

The present invention has been made in view of the above circumstances,
An object of the present invention is to provide a sheet material stacking device, an image reading device, and an image forming device capable of smoothly performing a feeding operation even with a thin and light sheet material.

[0027]

In order to achieve the above object, a sheet material stacking apparatus according to the present invention is arranged such that a downstream side of a sheet material conveying direction is inclined to a position lower than an upstream side of the sheet material conveying direction. A sheet material stacking device having a sheet material stacking surface for stacking sheet materials, wherein the sheet material stacking surface is provided with at least one or more protrusions.

Further, a side regulating member for regulating a position in the width direction of the sheet member is provided, and a sheet material loading surface of the side regulating member on which the sheet member is loaded has at least one protrusion. It is characterized by.

Also, at least one of the protrusions protrudes from an opening formed in the sheet material stacking surface and rotates about an axis in a direction substantially perpendicular to the sheet material conveyance direction as a central axis. It is the top of the moving member.

At least one of the protrusions is a top of a spherical member protruding from an opening formed in the sheet material stacking surface.

Further, the image reading apparatus according to the present invention is characterized in that it comprises image reading means for reading an image of the sheet material conveyed from the sheet material stacking device.

Further, the image forming apparatus according to the present invention is characterized by comprising an image forming means for forming an image on the sheet material conveyed from the sheet material stacking device.

[0033]

Preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings. However, the dimensions of the components described in this embodiment,
The materials, shapes, relative arrangements, and the like are not intended to limit the scope of the present invention only to them unless otherwise specified.

(First Embodiment) First, a first embodiment of a sheet material stacking apparatus according to the present invention will be described with reference to FIGS. However, in FIGS. 1 to 4, the same members as those of the above-described prior art shown in FIGS. 15 to 18 are denoted by the same reference numerals, and detailed description thereof will be omitted.

FIG. 1 is a sectional view of a first embodiment of a sheet material stacking apparatus according to the present invention, FIG. 2 is a plan view of the sheet material stacking apparatus shown in FIG. 1, and FIG. FIG. 4 shows a perspective view of the sheet material stacking device shown in FIG.
2 is a detailed sectional view of a roller member provided in the sheet material stacking device shown in FIG.

In FIG. 1, reference numeral 100 denotes a roller member as a rotating member, which has a central shaft 105 (see FIG. 4) as a shaft on both sides, and a support wall 104 formed integrally with the document feed tray 3. (See FIG. 4).

Reference numeral 101 shown in FIGS. 2 and 4 denotes an opening provided on the original document loading surface 50 as a sheet material loading surface, and protrudes the top of the roller member 100.

Also, reference numerals 102 and 103 shown in FIG. 4 denote cutouts provided in side regulating plates 51a and 51b as side regulating members shown in detail in FIG. 3, respectively. , Roller member 1
This is to prevent interference between 00 and the side regulating plates 51a and 51b.

Reference numeral 2 denotes an original as a sheet material, and a roller member 10 as a projection projecting from the original loading surface 50.
0 on top.

By adopting such a configuration, in the first embodiment of the sheet material stacking apparatus according to the present invention, the contact between the original 2 and the original feed tray 3 is achieved by a roller as shown in FIG. The line contact via the member 100 exists as many as the number of roller members (9 in FIG. 2 and the like), and the frictional resistance between the document 2 and the document feed tray 3 is significantly reduced as compared with the conventional example. .

However, the number of roller members used in the sheet stacking device according to the present invention is not limited to nine as described above, and may be any other number.

For this reason, even if only one or two originals having a small weight such as thin paper are placed, the original slides down to the paper feed roller 8 due to the inclination lowered toward the paper feed roller 8 and reaches the nip portion. be able to.

Even if the original has a very large frictional resistance or is a charged original, the original can slide down toward the paper feed roller 8 by rotating the roller member 100. This is particularly advantageous for a charged document.

This is because the original 2 and the original loading surface 50 do not directly touch each other, so that the influence of static electricity is much smaller than in the conventional example.

As described above, according to the first embodiment of the sheet material stacking apparatus according to the present invention, even when thin and light sheet materials are stacked, the sheet material is smoothly fed. be able to.

(Second Embodiment) Next, referring to FIGS. 5, 6, and 7, a second embodiment of the sheet stacking apparatus according to the present invention will be described.
An embodiment will be described. However, in FIGS. 5, 6, and 7, the same members as those of the above-described first embodiment shown in FIGS. 1 to 4 are denoted by the same reference numerals, and detailed description thereof will be omitted.

FIG. 5 is a sectional view of a second embodiment of the sheet stacking apparatus according to the present invention, FIG. 6 is a plan view of the sheet stacking apparatus shown in FIG. 5, and FIG. FIG. 6 is a perspective view of the sheet stacking device shown in FIG. 5.

In FIG. 5, reference numeral 111 denotes a document feed tray 3
Is a cylindrical recess provided on the original loading surface 50 as a sheet material loading surface, and a ball 110 as a spherical spherical member is rollably supported therein, and the recess 1
The opening of the ball 11 is smaller than the diameter of the ball 110 to prevent the ball 110 from coming off.

As shown in detail in FIGS. 6 and 7, the ball 110 can freely roll inside the concave portion 111, and the top of the ball 110 projects above the document loading surface 50.

By adopting such a configuration, in the second embodiment of the sheet material stacking apparatus according to the present invention,
As for the contact between the document 2 and the document feed tray 3, point contact exists via the balls 110 by the number of balls (six in FIG. 6 and the like), and the frictional resistance is further reduced as compared with the case of the first embodiment. Since the number of the components decreases, the effect exhibited in the first embodiment described above becomes more remarkable. However,
In the sheet material loading device according to the present invention, the ball 11
The number of 0s (rotating members) is not limited to six as described above, and may be any number of one or more.

Further, unlike the case of the first embodiment, the ball 110 can roll not only in the transport direction but also in the width direction of the document 2, so that the side regulating plates 51a and 51b are slid and the Even when correcting the position in the width direction or correcting the angle when placed obliquely, the moving load is very small, so that the user can set the document with a small force and with a good operation feeling. The additional effect is added.

(Third Embodiment) Next, FIGS.
A third embodiment of the sheet stacking device according to the present invention will be described with reference to FIG. However, in FIGS. 8 to 14, the same members as those of the above-described first embodiment shown in FIGS. 1 to 4 are denoted by the same reference numerals, and detailed description thereof will be omitted.

FIG. 8 is a perspective view of a third embodiment of the sheet stacking device according to the present invention, FIG. 9 is a sectional view of the sheet stacking device shown in FIG. 8, and FIG. FIG. 11 is a plan view of the sheet material loading device shown in FIG. 8, and FIGS. 11 to 14 are cross-sectional views of the sheet material loading device shown in FIG.

In the third embodiment of the sheet stacking apparatus according to the present invention described below, a sheet 222 is assumed as the sheet to be stacked.
In order to keep consistency with the description of the first embodiment and the like, the tray for loading 2 is also referred to as the document feed tray 3 for convenience. The same applies to the case where the sheet material loading surface on which the paper 222 is loaded is the document loading surface 50.

In FIG. 8, 200a and 200b are:
The position in the width direction of the sheet 222 shown in FIG.
As shown in detail in FIG. 9, a side regulating member for preventing skewing or the like during sheet transport is provided with an opening 203 on the document loading surface side on which the paper 222 is loaded and a central shaft 20 on the lower surface side.
An integrated support portion 204 for rotatably supporting the roller member 201 having 1a is supported by the document feed tray 3 for feeding paper 222 so as to be slidable in the W direction in FIG. I have.

Reference numeral 210 shown in FIG. 10 and the like denotes an opening portion of the document feed tray 3 provided on the document loading surface 50 as a sheet material loading surface.
This is for escape of the roller member 201 as a rotating member and the roller support portion 204 when 00b is slid in the W direction.

Reference numeral 206 shown in FIG. 11 and the like also denotes an opening as an opening provided on the original stacking surface 50 of the original feeding tray 3, and a supporting member integrally provided on the lower surface side of the original feeding tray 3. The top of the roller member 202, which is rotatably supported about the central axis 202 a, is set at a position protruding above the opening 206 by the portion 205.

FIG. 11 shows a state in which the sheet 222 as a sheet material is placed on the document feed tray 3 having the above configuration.
12, 13, and 14 show this.

11 and 12 show a state in which a sheet 222 such as A4 size paper is placed, and FIGS. 13 and 14 show a state in which a relatively small sheet such as a postcard is placed. Is shown.

FIGS. 11 and 13 show the case of the sheet 222 having a curl in a convex shape in the sheet width direction, respectively. FIGS.
22 is shown.

As is apparent from these figures, the paper 222
Has a concave curl in the width direction, even if both ends in the width direction are floating from the roller member 201, at least the vicinity of the center is supported by the roller member 202 as a rotating member.

When the paper 222 has a curl having a convex shape in the width direction, at least the vicinity of both ends is supported by the roller member 201 even if the center part is floating from the roller member 202.

The side regulating members 200a and 200a are also applicable to sheets 222 of different sizes such as A4 size and postcard.
If the position is adjusted in accordance with 0b to the paper width, the roller member 20
1 is always located at the widthwise end of the sheet 222, so that appropriate sheet support can be performed.

As described above, in the third embodiment of the sheet stacking apparatus according to the present invention, the side regulation for regulating the central portion in the sheet width direction of the document feed tray 3 and the position in the sheet width direction is performed. By providing the roller member rotatably on the member, the sheet 222 is always placed on the roller member regardless of the size of the sheet 222 and the curl shape in the width direction. Therefore, the frictional resistance between the rollers is significantly reduced, so that the paper can be smoothly inserted toward the paper feed roller 8.

As described above, in the first, second, and third embodiments of the sheet stacking apparatus according to the present invention, the downstream side in the transport direction of the document 2 and the sheet 222 is set to the upstream side. In the sheet material stacking device having the document mounting surface 50 inclined lower, an opening on the document mounting surface 50;
A rotatable roller member 100, a roller member 201, and a roller member 202 are provided.
1 and 202 are projected.

As a result, the contact between the original 2 or the sheet 222 placed on the sheet stacking device and the sheet stacking device becomes a line contact, and the frictional resistance is significantly reduced. Also, even if the paper has an extremely large friction coefficient, the roller members 100, 201 and 202
By rotating, the paper can surely slide down to the paper feed roller.

Further, by replacing the roller member with the ball 110 as a spherical member, for example, the movement resistance of the document 2 and the paper 222 in the transport direction as well as the paper width direction is significantly reduced. The load is reduced even when the position is corrected in the width direction by sliding the slider, and good operability is obtained. Even thin paper, one or two sheets, or an original or paper having an extremely large coefficient of friction can easily slide down to the nip portion of the paper feed roller simply by placing it on the paper feed tray.

Further, as shown in FIG.
2. In the sheet stacking apparatus having the document stacking surface 50 in which the downstream side in the conveyance direction 2 is inclined lower than the upstream side, an opening is provided at a substantially central portion in the width direction of the sheet material (paper 222) on the document stacking surface 50; Roller member 10 rotatable in the material transport direction
0, 201, and 202 are provided, the tops of the turning members protrude from the openings, and the side regulating members 200a and 200b for regulating the position in the sheet material width direction are also capable of turning in the sheet conveying direction. Roller member 201 as a member
To support.

With this configuration, when there is a concave curl in the width direction of the sheet material (paper 222), the center rotating member can support at least the sheet material surface, and conversely, when there is a convex curl The rotation member supported by the side regulating member can support the vicinity of the width direction end of the sheet material, and the sheet material can easily slide down to the paper feed roller nip portion.

On the other hand, the first, second, and third embodiments of the sheet material stacking apparatus according to the present invention described above are examples of use in the ADF, but the sheet material stacking apparatus according to the present invention is described. The device is not limited to the ADF device, but may be applied to a document feed tray such as a scanner, or may be applied to a paper feed tray on the image forming apparatus body such as a copier, a printer, and a facsimile. Needless to say.

The sheet material to be loaded on the sheet loading device according to the present invention may be a document from which an image is to be read or a recording medium such as a sheet on which the image is recorded.

That is, an image reading apparatus such as a scanner provided with the above-described sheet material loading apparatus is an embodiment of the image reading apparatus according to the present invention, and a copier, a printer, a facsimile, etc. provided with the above-described sheet material loading apparatus. Is an embodiment of the image forming apparatus according to the present invention.

In this case, the image reading means provided in the embodiment of the image reading apparatus according to the present invention includes an exposure apparatus and a CC.
Examples of the image forming unit included in the image forming apparatus according to the present invention include a bubble jet system, an ink jet system, and a system using an image carrier. Can be listed. Of course, other image reading means and image forming means can be applied as appropriate.

[0074]

As described above, according to the present invention,
In a sheet material loading apparatus having a sheet material loading surface in which the downstream side in the sheet material transport direction is inclined lower than the upstream side in the sheet material transport direction, for example, an opening is provided on the sheet material loading surface, and a top portion protrudes from the opening. As described above, by adopting the configuration including the rotating member as the protrusion, the contact state between the sheet material placed on the sheet material loading surface and the sheet material loading surface becomes a line contact. The frictional resistance with the material loading surface becomes very small, and as a result, a sheet material having a small weight such as thin paper has a thickness of 1 to 2 times.
Even when only the number of sheets is placed, the inclination of the sheet material loading surface makes it easy for the sheet material to slide down to the downstream paper feed roller portion, thereby facilitating the sheet material feeding operation. A material stacking device, an image reading device, and an image forming device can be provided.

Further, even with a sheet material having a very large coefficient of friction or a sheet material charged with static electricity, since the sheet material and the sheet material mounting surface are not in direct contact with each other, the rotation member may rotate. Accordingly, it is possible to provide a sheet material stacking apparatus, an image reading apparatus, and an image forming apparatus that can easily perform a sheet material feeding operation by facilitating a sheet material to reach a sheet feeding roller unit. it can.

Therefore, there is no need for the user to set the sheet material while paying attention so that the leading end of the sheet material reaches the sheet feeding roller portion, and the user can reliably place the sheet material only on the sheet material stacking device. A sheet material stacking device, an image reading device, and an image forming device capable of feeding a sheet material can be provided.

Also, since the projections are spherical members, the contact state between the sheet material and the sheet material loading surface is point contact, and further, the sheet material loading device capable of smoothly feeding the sheet material. An image reading device and an image forming device can be provided.

In addition, the spherical member can be rotated not only in the sheet material conveying direction but also in the sheet material width direction.
Even when correcting the position in the width direction of the sheet material or the state of being placed obliquely, the load at the time of operation can be reduced, and a sheet material stacking device capable of obtaining a comfortable operation feeling, An image reading device and an image forming device can be provided.

Further, for example, an opening is provided on the sheet material stacking surface and substantially at the center in the sheet material width direction as a protrusion, and a rotatable rotating member is supported so that the top portion protrudes from the opening. In addition, when the sheet member has a curl that is concave in the width direction, at least the pivot member at the center portion is formed by supporting the pivot member rotatably also on the side regulating member that regulates the side of the sheet material. A substantially central portion in the width direction of the sheet material can be supported, and when the sheet material has a curl that is convex in the width direction, at least the rotating members supported by the side regulating members are both ends in the width direction of the sheet material. Can support the vicinity of the sheet material, so the frictional resistance between the sheet material and the sheet material loading surface becomes very small regardless of the curl shape in the width direction of the sheet material and the presence or absence of curl, resulting in thin paper Even when the sheet material has a small weight and has curl, the inclination of the sheet material loading surface makes it easy for the sheet material to slide down to the downstream paper feed roller unit. A sheet stacking device, an image reading device, and an image forming device capable of performing a feeding operation smoothly can be provided.

[Brief description of the drawings]

FIG. 1 is a sectional view of a first embodiment of a sheet stacking device according to the present invention.

FIG. 2 is a plan view of the sheet material stacking device shown in FIG.

FIG. 3 is a perspective view of the sheet stacking device shown in FIG. 1;

FIG. 4 is a detailed sectional view of a roller member included in the sheet material stacking device shown in FIG.

FIG. 5 is a cross-sectional view of a second embodiment of the sheet stacking device according to the present invention.

FIG. 6 is a plan view of the sheet stacking device shown in FIG. 5;

FIG. 7 is a perspective view of the sheet material stacking device shown in FIG. 5;

FIG. 8 is a perspective view of a third embodiment of a sheet material stacking apparatus according to the present invention.

9 is a cross-sectional view of the sheet material stacking device shown in FIG.

FIG. 10 is a plan view of the sheet material stacking device shown in FIG.

FIG. 11 is a cross-sectional view of the sheet stacking device shown in FIG.

12 is a cross-sectional view of the sheet stacking device shown in FIG.

FIG. 13 is a cross-sectional view of the sheet material stacking device shown in FIG.

14 is a cross-sectional view of the sheet stacking device shown in FIG.

FIG. 15 is a sectional view of a copying machine as a conventional image forming apparatus.

FIG. 16 is a detailed sectional view of a paper feed roller unit of the conventional copying machine shown in FIG.

FIG. 17 is a cross-sectional view of a paper feed tray section of the conventional copying machine shown in FIG.

FIG. 18 is a plan view of a paper feed tray section of the conventional copying machine shown in FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Copier 2 Document 3 Document feed tray 4 Platen glass 5 Optical reading device 6 Document discharge tray 7 Document feeder device 8 Feed roller 9 Separation pad 10, 11 Registration roller pair 12 Main body 13 Transport belt 14 Inlet 15, 16 Discharge Paper roller 20 Recording paper 21 Paper feed tray 22 Paper feed roller 23 Separation pad 24, 25 Registration roller pair 26 Photosensitive drum 27 Transfer charger 28 Transport belt 29, 30 Heat fixing roller pair 31, 32 Paper discharge roller pair 33 Paper discharge tray Reference Signs List 40 swing plate 41 document pressing member 42 shaft 43 frame 44 separation pad holder 45 shaft 46 spring 50 document loading surface 51, 51a, 51b document side regulating plate 52, 53 slide groove 100 roller member 101 opening 102, 103 notch 104 Support wall 105 Central axis 110 Lumpur 111 recess 200a, 200b side regulating member 201 roller members 201a, 202a central axis 202 roller member 203 opening 204, 205 support portions 206 and 210 opening 222 sheets

Claims (6)

[Claims] 1. A sheet material loading surface in which a downstream side in a sheet material transport direction is inclined to a position lower than an upstream side in the sheet material transport direction, and a sheet material loading surface for loading the sheet material is provided. The sheet material stacking device according to claim 1, wherein the sheet material stacking surface includes at least one or more protrusions. 2. A side regulating member for regulating a position in a width direction of the sheet material, wherein a sheet material loading surface of the side regulating member on which the sheet material is loaded has at least one protrusion. The sheet loading device according to claim 1, wherein: 3. A rotating member, wherein at least one of the protrusions protrudes from an opening formed in the sheet material stacking surface and rotates about an axis substantially perpendicular to the sheet material conveying direction as a central axis. The sheet material stacking device according to claim 1, wherein the sheet material stacking device is a top portion of a moving member. 4. The spherical member according to claim 1, wherein at least one of the protrusions is a top of a spherical member protruding from an opening formed in the sheet material stacking surface. 4. The sheet material loading device according to 1. 5. An image reading device, comprising: an image reading unit that reads an image of the sheet material conveyed from the sheet material stacking device according to any one of claims 1 to 4. 6. An image forming apparatus, comprising: an image forming unit that forms an image on the sheet material conveyed from the sheet material stacking device according to claim 1. Description: