JP2006124131A - Sheet feeder and image forming device having the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a sheet feeder capable of performing stable feeding control, and to provide an image forming device with the same. <P>SOLUTION: This sheet feeder is provided with a feeding means 4 to be brought in pressure-contact with sheets 2, which are stacked in a sheet stacking member 1, to deliver the sheets 2 to a separating part, and the delivered sheets 2 are separated for feeding by an inclined surface 6a of an inclined member 6 and a nip forming part. This sheet feeder has a function for making a conductive material 34 abut in the escaping direction in relation to the delivery direction of the feeding means 4 with a light load. The sheet feeding member 4 and the sheet stacking member 1 are integrated, and setting direction of the sheet stacking member 1 in relation to the image forming device is vertical to the sheet feeding direction. The conductive material 34 has a cut-shaped corner part 34a. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a sheet material feeding apparatus that separates and feeds stacked sheet materials one by one and an image forming apparatus including the sheet material feeding apparatus.

A sheet material feeding method is known in which the sheet material is fed to the separation unit by the sheet material feeding unit, and the fed sheet material is separated by the inclined surface of the inclined member and the nip forming unit (for example, Patent Documents 1 to 5). reference).
In the sheet material feeding device, the sheet material accumulated in the sheet material stacking member is pressed against the sheet material, and the sheet material is fed to the separation unit. And an inclined member having an inclined surface against which the abutting surface is formed, and the inclined member is formed in a protruding shape along the axial direction of the feeding means with the contact surface with the feeding means, and the tip of the inclined surface is an edge to the feeding means In contact.
In such a sheet material feeding device, the sheet material is fed to the separation unit by the feeding unit, and the fed sheet material is separated by the inclined surface of the inclined member and the nip forming unit, so that the low temperature and low humidity environment is obtained after the feeding time. When the continuous feeding is performed, the feeding unit slips, and a non-feed may occur due to exceeding a predetermined feeding time.
JP-A-8-91612 JP 2003-26348 A JP-A-9-110201 JP 2001-341875 A JP 2003-192162 A

As a condition for the occurrence of slip, the material of the inclined member is usually formed of resin, and when the material is PE, static electricity is more likely to occur due to rubbing with the feeding means than other resin members, and sheet material. When the material of the paper is high quality paper and the filler is abnormally large, the feeding means is charged by the generated static electricity, and when the feeding means is non-conductive, the electric charge tends to accumulate and the filler etc. adheres to the feeding means. When the next sheet material is fed, slipping occurs due to a filler or the like interposed between the feeding means and the sheet material.
The material of the inclined member is selected as PE because the wear of the inclined member due to rubbing with the sheet material is low, and the generation of sliding noise due to rubbing with the sheet material is better than other resin materials. This is because of a low.
In order to solve the above-mentioned problem, the surface of the charged feeding means is eliminated by releasing the charged charges on the feeding means, thereby eliminating the deposits such as fillers on the surface of the feeding means and eliminating the slip of the feeding means. In order to neutralize the static electricity, a technique has been studied in which a static elimination brush or a static elimination cloth is usually placed in contact with or close to the surface of the feeding means.
However, since the sheet material feeding device is often used by being added to the image forming apparatus, it is necessary to pull out the sheet stacking member from the image forming apparatus when stacking the sheet material.
At that time, in the sheet material feeding device in which the sheet material feeding device and the sheet material stacking member are integrated, the sheet material in which the setting direction of the sheet material stacking member with respect to the sheet material feeding device is perpendicular to the sheet material feeding direction. In the case of a feeding device, a conductive material may be present.
Then, when the sheet material stacking member is pulled out and pushed in, the edge of the sheet material feeding member may interfere with the edge of the conductive material and the conductive material pasting part may be peeled off, or the charge removal cloth may be wrinkled. . In such a case, a sufficient static elimination effect cannot be expected.
In view of the above, the object of the present invention is to make the shape of the neutralizing cloth cut so that the edge of the sheet material feeding member and the edge of the conductive material are less likely to interfere with each other. Provided is a sheet material feeding device and an image forming apparatus equipped with the sheet material feeding device that can perform stable feeding control without causing problems such as peeling of a material pasting portion or wrinkling of a conductive material. There is to do.

In order to solve the above-described problem, the invention according to claim 1 includes a feeding unit that presses the sheet material accumulated in the sheet material stacking member and feeds the sheet material to the separation unit, and the feeding unit. And an inclined member provided with an inclined surface against which the leading end of the sheet material abuts against, and the inclined member has a projecting shape along the axial direction of the feeding means with the contact surface with the feeding means And the leading end of the inclined surface is in contact with the feeding means at the edge, and the sheet material is fed out to the separating portion by the feeding means, and the fed sheet material is formed into an inclined surface of the inclined member and a nip. A sheet material feeding device that separates and conveys the sheet material, and includes a conductive material that abuts in a direction to escape with respect to a feeding force direction of the feeding unit and abuts with a slight load, and the sheet material feeding member And sheet material stacking member In addition, in the case where the setting direction of the sheet material stacking member with respect to the image forming apparatus is orthogonal to the sheet material feeding direction, the corners of the conductive material or the corners of the feeding unit do not interfere with each other. It is configured.
The invention of claim 2 is characterized in that, in claim 1, the feeding means has an end portion formed conically so as not to interfere with the conductive material.
According to a third aspect of the present invention, in the second aspect, the feeding means has an end portion formed in the conical shape, and the conductive material is cut off at a corner portion to avoid interference with the feeding means. A configuration is provided.
According to a fourth aspect of the present invention, there is provided the sheet material feeding device according to any one of the first to third aspects.

  According to the present invention, by making the corner of the conductive material cut, the edge of the sheet material feeding member and the edge of the conductive material are less likely to interfere with each other, or the conductive material pasting portion is peeled off, or Problems such as wrinkling of the conductive material do not occur, and therefore stable feeding control can be performed.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is a schematic vertical sectional view showing an example of an image forming apparatus configured as a printer.
In FIG. 1, an image forming apparatus main body A has a sheet material feeding device 20 that stacks and feeds sheet materials 2 one by one, and a sheet material 2 fed from the sheet material feeding device 20. A registration unit 30 for adjusting the registration of the image forming position and an image forming unit 21 for forming an image on the sheet material 2 are provided.
First, the configuration and operation of the registration unit 30 and the image forming unit 21 will be described. In the registration means 30 of the present embodiment, the leading edge of the sheet material 2 is detected by the registration sensor 32 and is conveyed by a predetermined amount by the feeding means to stop the feeding means.
At this time, the registration roller 31a and the opposing roller 31b are stopped, and the leading end of the sheet material 2 that has been fed out abuts against the nip portion between the registration roller 31a and the opposing roller 31b, and is fed out by a predetermined amount by the feeding unit. The tip forms a slack.
The skew is corrected by the full width of the leading edge of the sheet material 2 abutting against the registration roller 31a, and the timing of the image forming position of the sheet material 2 is conveyed when it is conveyed to the image forming unit by driving the registration roller 31a during image formation. be able to.

Further, the image forming means 21 of the present embodiment has a drum-shaped photoconductor 22, and this photoconductor 22 is driven to rotate counterclockwise in FIG. 1 during an image forming operation. At this time, the surface of the photoreceptor 22 is charged to a predetermined polarity by a charging roller 23 which is an example of a charging device.
The surface of the charged photosensitive member 22 is irradiated with light-modulated laser light L emitted from the exposure device 24, whereby an electrostatic latent image is formed on the surface of the photosensitive member 22. This electrostatic latent image is visualized as a toner image by the developing device 25.
A transfer roller 26, which is an example of a transfer device, is disposed facing the photoconductor 22, and the sheet material 2 fed in the direction of arrow B from the sheet material feeding device 20 in the manner described later is transferred to the photoconductor 22. It passes through a transfer portion between the rollers 26.
At this time, the toner image on the photosensitive member 22 is transferred to the sheet material 2. Untransferred toner that is not transferred to the sheet material 2 and adheres to the photoreceptor 22 is removed by the cleaning device 27.
The sheet material 2 that has passed through the transfer section passes through the fixing device 28 as indicated by an arrow C, and at this time, the toner image on the sheet material 2 is fixed to the sheet material 2 by the action of heat and pressure.
The sheet material 2 that has passed through the fixing device 28 is discharged to a paper discharge unit 29. As described above, a predetermined image is formed by the image forming means 21 on the sheet material 2 sent out from the sheet material feeding device 20.

FIG. 2 is an exploded perspective view showing a sheet material feeding apparatus according to the present invention. As shown in FIGS. 1 and 2, the sheet material feeding device 20 is placed in the main body case 10 through a box-shaped main body case 10 having an open top and an opening 10 b formed at the rear of the main body case 10. The cassette 11 is detachably mounted.
In this cassette 11, a sheet material stacking member 1, generally called a bottom plate, is arranged, and holes formed in the ear portion 1a projecting on the rear end side project on each side wall 11b of the cassette 11. The pin 11a is rotatably fitted.
Further, as shown in FIG. 1, a compression spring 3 is disposed between the front end side of the sheet material stacking member 1 and the bottom wall 11c of the cassette 11, so that the front end side of the sheet material stacking member 1 faces upward. It is energized.
A shaft 33 shown in FIGS. 1 and 2 is rotatably supported on the main body case 10, and a sheet material feeding member 4 configured as a feeding roller made of an elastic body is supported on the shaft 33 with respect to the shaft 33. Are fixed concentrically.

FIG. 3 is an enlarged partial sectional view showing the sheet material, the sheet material feeding member, and the inclined member on the sheet material stacking member. As shown in FIGS. 1 and 3, the sheet material 2 described above is stacked on the sheet material stacking member 1.
When the sheet material stacking member 1 is biased upward by the compression spring 3 (FIG. 1), as shown in FIG. 3, the uppermost sheet material 2a of the sheet material 2 stacked on the sheet material stacking member 1 is obtained. The tip side portion X of the sheet material is in pressure contact with the outer peripheral surface of the sheet material feeding member 4. Hereinafter, this portion is referred to as a pressure contact portion X. The sheet material 2a of the present embodiment is made of paper or a resin sheet.
The sheet material 2a is fed in the direction indicated by the arrow S in FIG. 3 as the sheet material feeding member 4 rotates, but the inclined surface 6a is provided downstream of the above-mentioned pressure contact portion X in the sheet material conveyance direction. An inclined member 6 is disposed. A portion indicated by reference numeral 6 b of the inclined member 6 is in pressure contact with the outer peripheral surface of the sheet material feeding member 4 by the biasing action of the compression spring 5 (FIGS. 1 and 2).
Hereinafter, this portion is referred to as a pressure contact portion 6b. As described above, the inclined member 6 has the press contact portion 6b that presses against the outer peripheral surface of the sheet material feeding member 4, and the upstream portion in the sheet material feeding direction from the press contact portion 6b is configured as the inclined surface 6a. Has been.
Further, as shown in FIG. 2, protrusions 6 d provided on the side surfaces of the inclined member 6 are slidably fitted to guide rails 8 provided on the main body case 10. Accordingly, the inclined member 6 is supported so as to be movable in a direction in which the inclined member 6 is in contact with or separated from the outer peripheral surface of the sheet material feeding member 4, that is, in a direction in which the inclined member 6 approaches or separates from the outer peripheral surface.
Normally, the pressure contact portion 6 b of the inclined member 6 is pressed against the outer peripheral surface of the sheet material feeding member 4 by a compression spring 5 disposed between the sheet material feeding member 4 and the main body case 10.

A pair of hooks 6f are provided at the lower portion of the inclined member 6, and these engage with a locking portion (not shown) of the main body case 10, so that the inclined member 6 moves above its highest position. As a result, separation from the main body case 10 is prevented.
As can be seen from FIG. 2, the pressure contact portion 6 b of the inclined member 6 extends in the axial direction of the sheet material feeding member 4 made of a feed roller, and its width W is narrow, and the sheet material feeding out than the pressure contact portion 6 b. The portion 6 e of the inclined member 6 on the downstream side in the direction is separated from the outer peripheral surface of the sheet material feeding member 4.
It is also possible to divide the press contact portion 6 b into a plurality of the sheet material 2 a in the feeding direction S and to make these press contact portions 6 b press contact with the outer peripheral surface of the sheet material feeding member 4.
Further, as shown in FIG. 3, the sheet material 2 loaded on the sheet material stacking member 1 is pressed against the outer peripheral surface of the sheet material feeding member 4, and the pressure contact portion 6b of the inclined member 6 is fed to the sheet material. The distance along the sheet material feeding direction S between the portion 4 and the portion that is in pressure contact with the outer peripheral surface of the member 4 is set to a short distance of about 2 mm to 6 mm.
Furthermore, when the friction coefficient of the outer peripheral surface of the sheet material feeding member 4 with respect to the sheet material 2 is μ1, the friction coefficient between the sheet materials is μ2, and the friction coefficient of the pressure contact portion 6b of the inclined member 6 with respect to the sheet material 2 is μ3, μ1>μ2> μ3 is set. If the inclined member 6 is made of resin, the coefficient of friction of the inclined member 6 with respect to the sheet material 2 can be reliably lowered.
When a feeding signal is issued from a control unit (not shown), a motor (not shown) starts to operate, and the sheet material feeding member 4 including the shaft 33 and a feeding roller fixed to the shaft 33 is shown in FIG. 1 and 3 is rotated counterclockwise in FIG.
As a result, the outer peripheral surface of the sheet material feeding member 4 is moved, so that the uppermost sheet material 2 a pressed by the compression spring 3 and pressed against the outer peripheral surface of the sheet material feeding member 4 becomes the sheet material feeding member 4. It is sent out in the direction of arrow S shown in FIG.
In this way, the outer peripheral surface of the sheet material feeding member 4 is pressed against the sheet material 2a loaded on the sheet material stacking member 1, and the sheet material 2a pressed against the outer peripheral surface is sent out by movement of the outer peripheral surface. Perform the action.

FIG. 4 is a schematic partial cross-sectional view showing a state in which the leading end of the fed sheet material is in contact with the inclined surface of the inclined member. As shown in FIG. 4, each sheet material 2 a sent out has its tip abutted against the inclined surface 6 a of the inclined member 6.
At this time, as shown in FIG. 4, the angle θ2 formed between the inclined surface 6a of the inclined member 6 and the feeding direction of the sheet material 2 is such that the leading end of the sheet material 2a that hits the inclined surface 6a is guided to the inclined surface 6a. Thus, it is set at an acute angle so that it can move toward the pressure contact portion 6b. This angle θ2 is preferably 50 ° to 70 °.
FIG. 5 is a schematic partial cross-sectional view showing a state in which the leading end of the fed sheet material abuts against the inclined surface of the inclined member and is conveyed beyond the pressure contact portion. As described above, the sheet material 2a guided to the pressure contact portion 6b receives the frictional force from the outer peripheral surface of the sheet material feeding member 4 as shown in FIG. It passes between the part 6b.
The inclined member 6 is separated from the outer peripheral surface of the sheet material feeding member 4 by a distance corresponding to the thickness of the sheet material 2 a, and this is the sheet material 2 a that receives a frictional force from the outer peripheral surface of the sheet material feeding member 4. Pass through.
At this time, as described above, since the friction coefficients μ1, μ2, and μ3 are set to μ1>μ2> μ3, the uppermost sheet material 2a is hindered by the frictional force received from the sheet material feeding member 4. Instead, it is fed out from the cassette 11 and passes through the portion of the pressure contact portion 6b.

Next, as described above with reference to FIG. 1, the sheet material 2a is conveyed to a transfer portion between the photoconductor 22 and the transfer roller 26. At this time, the toner image on the photoconductor 22 is transferred to the sheet material. Transferred onto 2a.
According to the sheet material feeding device 20 described above, the uppermost sheet material 2a of the plurality of sheet materials 2 stacked on the sheet material stacking member 1 is separated from the other sheet materials, and the uppermost sheet is obtained. Only the material 2a can be fed. The operation at this time will be clarified with reference to FIG. 4 and FIG.
As shown in FIG. 4, when the tip of the uppermost sheet material 2a hits the inclined surface 6a of the inclined member 6, the force exerted by the sheet material 2a on the inclined surface 6a is F, and the inclined surface 6a of this force F The component force in the direction perpendicular to the angle F1 is F1, and the component force in the direction along the inclined surface 6a is F2.
Further, if the force by which the compression spring 3 shown in FIG. 1 presses the inclined member 6 against the outer peripheral surface of the sheet material feeding member 4 is referred to as a separation pressure Q, the acting direction of the separation pressure Q is the sheet material 2a. The angle shown by θ1 is made with respect to the feed direction of.
Therefore, by setting the separation pressure so that the separation pressure Q is smaller than the component F1α of the component force F1 along the acting direction of the separation pressure Q, the pressure contact portion 6b of the inclined member 6 is shown in FIG. As shown, the sheet material 2a is separated from the outer peripheral surface of the sheet material feeding member 4 by a distance substantially corresponding to the thickness of the sheet material 2a, through which the sheet material 2a passes.

On the other hand, when the next sheet material 2b in contact with the uppermost sheet material 2a as shown in FIG. 5 is fed together with the sheet material 2a by the frictional force received from the uppermost sheet material 2a, The front end of the sheet material 2b hits the inclined surface 6a of the inclined member 6, and a force Fp is applied to the inclined surface 6a.
This force Fp is also divided into a component force Fp1 in a direction perpendicular to the inclined surface 6a of the inclined member 6 and a component force Fp2 in a direction along the inclined surface 6a, and a component Fp1α in the direction opposite to the separation pressure Q is generated. However, generally, the frictional force acting between the sheet materials is small, and is, for example, about 50% of the frictional force acting between the outer peripheral surface of the sheet material feeding member 4 and the sheet material 2a.
For this reason, the force Fp1α is also very small, and the inclined member 6 can be prevented from being separated from the outer peripheral surface of the sheet material feeding member 4 larger than the thickness of the uppermost sheet material 2a.
For this reason, the next sheet material 2b is stopped by the inclined surface 6a, and is not fed beyond the press contact portion 6b. The same applies to the case where the sheet materials 2c below the next sheet material 2b are fed together and hit the inclined surface.
As described above, the illustrated sheet material feeding device 20 can feed only the uppermost sheet material 2 a among the stacked sheet materials 2. Moreover, since the friction coefficient of the pressure contact portion 6b with respect to the sheet material 2a can be reduced, the sheet material 2 conveyed between the pressure contact portion 6b of the inclined member 6 and the outer peripheral surface of the sheet material feeding member 4 performs stick slip. The trouble which raises can be prevented and generation | occurrence | production of abnormal noise can be suppressed effectively.
1 and 2, a conductive material 34 is brought close to or in contact with the outer periphery of the feeding member 4, and the conductive material 34 is grounded 36 outside the device via a conductive wire 35. The attachment direction of the conductive material 34 (direction from the fixed position to the free end) is attached in parallel to the feeding direction of the sheet material feeding member 4. The conductive material 34 usually uses a static elimination brush or a static elimination cloth.
When static electricity is generated by rubbing between the inclined member 6 and the sheet material feeding member 4 and the outer peripheral surface of the sheet material feeding member is charged, the charge of the sheet material is discharged from the conductive material 34, so that the sheet material filler, paper powder, etc. It will not adhere.
Further, by arranging the conductive material 34 with respect to the position of the feeding means so that the relationship between the width W1 of the feeding means and the conductive material width H is W1 ≦ H, the charging of the surface of the sheet material feeding member 4 is circulated. By doing so, it becomes possible to remove all.

FIG. 6 is a partial perspective view showing an embodiment of a sheet material feeding apparatus according to the present invention. FIG. 7 is an enlarged partial perspective view showing the vicinity of the sheet material feeding member of FIG. FIG. 8 is an enlarged schematic view showing the conductive material and the sheet material feeding member of FIG.
Referring to FIGS. 6 to 8, in the present invention, as shown in FIG. 6, the sheet material stacking device (sheet material feeding device) 20 has a pulling direction 37 and a sheet material feeding direction 41 orthogonal to each other. The conductive material 34 is attached to the image forming apparatus A side, and the sheet material feeding member 4 and the conductive material 34 are attached so as to be in contact with each other.
Therefore, when the sheet material stacking device 20 is set in the image forming apparatus A, the corner portion 38 of the conductive material 34 and the corner portion 39 of the sheet material feeding member 4 interfere with each other, and the conductive material 34 is peeled off or folded. There is a risk of getting on. In FIG. 6, an arrow 41 indicates the sheet material feeding direction.
Therefore, as shown in FIG. 8, by making the shape portion 34 a by cutting off the entrance side corner portion of the conductive material 34, it is possible to prevent interference with the corner portion 39 of the sheet material feeding member 4, and the conductive material 34 is peeled off, Or it can prevent a crease. That is, the corner where the conductive material 4 interferes with the sheet material feeding member 4 is cut out so as not to interfere.

FIG. 9 is a schematic view showing a modification of the conductive material and sheet material feeding member of FIG. The sheet material feeding member 4 has a structure in which a central portion is formed of a resin or the like, and a friction material such as rubber is disposed around the sheet material feeding member 4.
Therefore, the central resin is molded into a conical portion (tapered portion) 40 so that the conductive material 34 can be set while being pushed away. By having such a shape, interference with the corners 39 of the sheet material feeding member 4 can be prevented, and the conductive material 34 can be prevented from being peeled off or creased.
That is, the feeding member 4 has an end portion formed in a conical shape so as not to interfere with the conductive material 34.
According to the present invention, as described above, when the sheet material stacking device is set in the image forming apparatus by making the central material (resin portion) of the sheet material feeding member conical, the conical portion is a conductive material. Therefore, it is possible to prevent the conductive material from being peeled off or creased. Therefore, stable feeding control can be performed.
In addition, according to the present invention, by combining the above-described configurations, the conductive material can be more reliably set at the correct position when the sheet material stacking device is set in the image forming apparatus, and more stable supply can be achieved. Transmission control can be performed. That is, the sheet material feeding member 4 has an end portion formed in a conical shape, and the conductive material 34 is configured to have a configuration in which corner portions are cut out to avoid interference with the feeding member 4. Also good.
The present invention can also be applied to various types of image forming apparatuses other than the form shown in FIG. 1 or sheet material feeding apparatuses thereof, for example, a plurality of sheet material feeding units each accommodating sheet materials of different sizes. The present invention can be widely applied to an image forming apparatus having a feeding apparatus, an image forming apparatus including a copying machine, a facsimile machine, a printing machine, or a multifunction machine, or a sheet material feeding apparatus thereof.

1 is a schematic vertical sectional view showing an example of an image forming apparatus configured as a printer. The disassembled perspective view which shows the sheet material feeding apparatus by this invention. The fragmentary sectional view which expands and shows the sheet material on the sheet material stacking member, the sheet material feeding member, and the inclined member. The schematic fragmentary sectional view which shows the state which the front-end | tip of the sent sheet | seat material is contacting the inclined surface of an inclination member. FIG. 6 is a schematic partial cross-sectional view showing a state in which the leading end of the fed sheet material abuts against the inclined surface of the inclined member and is conveyed beyond the pressure contact portion. The partial perspective view which shows embodiment of the sheet material feeding apparatus by this invention. The partial perspective view which expands and shows the vicinity of the sheet | seat material feeding member of FIG. Schematic which expands and shows the electrically-conductive material and sheet material feeding member of FIG. Schematic which shows the modification of the electrically conductive material of FIG. 6, and a sheet material feeding member.

Explanation of symbols

A image forming apparatus (printer), 1 sheet material stacking member, 2 sheet material, 4 feeding means (sheet material feeding member, feeding roller), 6 inclined member, 6a inclined surface, 6b abutting surface (pressure contact portion) , 20 Sheet material feeding device (sheet material stacking device), 21 Image forming means (image forming means), 34 Conductive material, 34a Shaped portion with corners cut off, 39 Corner portions (of feeding means)

Claims (4)

A feeding unit that presses the sheet material accumulated in the sheet material stacking member and feeds the sheet material to the separation unit, and an inclined surface that presses against the feeding unit and abuts on the leading end in the feeding direction of the sheet material. An inclined member, and the inclined member forms a contact surface with the feeding means in a projecting shape along the axial direction of the feeding means, and an end of the inclined surface contacts the feeding means with an edge. A sheet material feeding device that feeds the sheet material to the separating unit by the feeding unit and separates and conveys the fed sheet material by the inclined surface of the inclined member and the nip forming unit, the feeding unit The sheet material feeding member and the sheet material stacking member are integrated, and the sheet with respect to the image forming apparatus is provided. Material loading material In what setting direction is perpendicular to the direction feeding sheet material feeding,
The sheet material feeding device, wherein corners of the conductive material or corners of the feeding unit are configured not to interfere with each other.   2. The sheet material feeding apparatus according to claim 1, wherein the feeding means has an end portion formed in a conical shape so as not to interfere with the conductive material.   The said feeding means has the edge part formed in the said cone shape, The said electrically-conductive material is equipped with the structure which cut off the corner | angular part in order to avoid interference with the said feeding means, It is characterized by the above-mentioned. The sheet material feeding device described. An image forming apparatus comprising the sheet material feeding device according to claim 1.

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