JP2008030901A - Paper feeder, and image forming device having the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a paper feeder capable of suppressing any skew or register deviation of sheet materials while preventing double feed of the sheet materials, and an image forming device having the same. <P>SOLUTION: As shown in Fig. 1(A), when an upright plate part 60A is inclined, and a space S is formed between the upright plate part and an end of a sheet material P placed on an upper side, a first screw member 78 is screwed to allow its fore end to be butted to a slide plate 62. As shown in Fig. 1(B), by adjusting the inclination of a connection part 60B, the inclination of the upright plate part 60A is adjusted, and the space S between the upright plate part 60A and the end of the sheet material P is reduced. Thus, by reducing the space S between the upright plate part 60A and the end of the sheet material P, the positional deviation of the sheet material P is prevented even if air is blown against the sheet material P from its side, and any skew or registration deviation of the sheet materials P can be suppressed while preventing double feed. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a sheet feeding device on which sheet materials to be supplied to an image forming apparatus are stacked, and an image forming apparatus including the sheet feeding device.

  There is a problem in that the upper and lower sheet materials are brought into close contact with the burrs at the end portions generated when the sheet material is cut, and the sheet materials are stacked on the sheet feeding device in this state, so that the sheet materials are double-fed.

In view of this, a sheet feeding device has been proposed in which the sheet material is separated by blowing air from the side to the sheet material stacked by a fan to prevent double feeding of the sheet material. (Patent Document 1)
Thereby, air enters between the sheet material and the sheet material is separated one by one up and down. Thereby, the double feeding of the sheet material is prevented.
JP 2003-176051 A

  On the other hand, between the side fence that contacts the end of the sheet material stacked on the paper feeder and regulates the sheet feeding position and the end of the sheet material, the side fence component accuracy, mounting position accuracy, etc. There may be a gap due to the variation of. In particular, when a large-capacity sheet material is stacked, a small inclination of the side fence affects the gap between the sheet material stacked on the upper side and the side fence.

  As described above, when air is blown from the side in a state where there is a gap between the side fence and the end of the sheet material, the position of the sheet material is shifted at the same time as the sheet material is separated.

  When the sheet material is sent to the image forming unit in a state where the position of the sheet material is shifted, a so-called skew in which the sheet material is inclined in the conveyance direction or a so-called registration shift in which the sheet material is shifted in a direction perpendicular to the conveyance direction occurs.

  In addition, by pressing the side fence against the end of the sheet material with a spring, it is possible to eliminate the gap between the sheet material and the side fence (hereinafter referred to as a regulating member) and prevent sheet material skew and registration. Even if air is blown, the sheet material is not separated and double feeding occurs.

  In view of the above facts, the present invention has an object to suppress sheet material skew and registration while preventing double feeding of the sheet material.

  A sheet feeding device according to claim 1 of the present invention is loaded on a loading plate on which a sheet material is loaded, a spraying means for blowing air to an end portion of the sheet material loaded on the loading plate, and the mounting plate. A movable restricting member that restricts the sheet feeding position by hitting the end of the sheet material, and an inclination adjusting means that adjusts the inclination of the restricting member in the height direction or the inclination with respect to the sheet feeding direction. And

  According to the above configuration, the restricting member contacts the end of the sheet material and restricts the sheet feeding position of the sheet material.

  However, a gap is generated between the end of the sheet material and the regulating member due to variations in the accuracy of the regulating member, such as component accuracy and mounting position accuracy. When air is blown from the side to the sheet material in order to prevent double feeding of the sheet material in a state where this gap is generated, air enters between the sheet material and the sheet material is separated, but the sheet material is separated. The position is shifted, and skew or registration of the sheet material occurs.

  Therefore, even if air is blown onto the sheet material from the side by adjusting the inclination in the height direction of the regulating member or the inclination with respect to the paper feeding direction by adjusting the adjustment member, and reducing the gap between the regulating member and the end of the sheet material, the sheet material The positional deviation of is suppressed.

  In this way, it is possible to suppress skew and registration of the sheet material while preventing double feeding of the sheet material.

  A sheet feeding device according to a second aspect of the present invention is the sheet feeding device according to the first aspect, wherein the regulating member is connected to the slide plate that is slidable in the surface direction of the stacking plate, and the slide plate is connected by a connecting portion. An abutting plate that abuts against the end of the sheet material, and the tilt adjusting means tilts the connecting portion of the abutting plate and contacts the end of the sheet material. It is a 1st adjustment member which adjusts the inclination of a part, It is characterized by the above-mentioned.

  According to the above configuration, the inclination of the connecting portion of the contact plate connected to the slide plate is tilted by the first adjustment member, thereby adjusting the inclination of the standing plate portion of the contact plate that contacts the end portion of the sheet material.

  Thus, by adjusting the inclination of the standing plate portion by an indirect method, the gap between the standing plate portion and the end portion of the sheet material can be reduced without complicating the shape of the slide plate.

  The sheet feeding device according to a third aspect of the present invention is the paper feeding device according to the second aspect, wherein the connecting portion extends from an end portion of the upright plate portion along the slide plate, and the first adjusting member is the connecting portion. The first screw member is attached to the portion, the front end portion abuts on the slide plate, and the connecting portion is inclined by the screwing amount of the screw to adjust the inclination of the standing plate portion.

  According to the above configuration, the inclination of the upright plate portion is adjusted by the screwing amount of the first screw member attached to the connecting member of the contact plate and having the tip portion in contact with the slide plate.

  As described above, the manufacturing cost can be reduced by adjusting the inclination of the upright plate portion using the screw which is a general-purpose component.

  The sheet feeding device according to a fourth aspect of the present invention is the sheet feeding device according to the first aspect, wherein the regulating member is connected to the slide plate that is slidable in the surface direction of the stacking plate, and the slide plate is connected by a connecting portion. An abutting plate that abuts against the end of the material, and the inclination adjusting means is attached to the slide plate and pushes the standing plate portion of the abutting plate that abuts against the end of the sheet material to It has the 2nd adjustment member which adjusts the inclination of a standing board part, It is characterized by the above-mentioned.

  According to the said structure, the inclination of a standing board part is adjusted by pushing the standing board part of the contact plate which contact | wins the edge part of a sheet | seat with the 2nd adjustment member attached to the slide plate.

  Thus, accuracy is improved by adjusting the inclination of the standing plate portion by a direct method.

  According to a fifth aspect of the present invention, in the paper feeding device according to the fourth aspect, the slide plate includes a standing wall that rises along the standing plate portion, and the second adjustment member is attached to the standing wall, It is a 2nd screw member which pushes a standing board part and adjusts the inclination of the standing board part, It is characterized by the above-mentioned.

  According to the said structure, the inclination of a standing plate part is adjusted by pushing the standing plate part of the contact plate which hits the edge part of a sheet | seat with a 2nd screw member.

  In this way, the manufacturing cost can be reduced by adjusting the inclination of the upright plate portion using a screw that is a general-purpose component.

  The paper feeding device according to a sixth aspect of the present invention is the paper feeding device according to the fifth aspect, wherein the connecting portion extends from an end portion of the upright plate portion along the slide plate, and the slide plate is provided with the slide plate. The tilt adjusting means is attached to the slide plate so as to be movable in the surface direction, and adjusts the tilt of the upright plate portion by pushing the end of the connecting portion from the opposite direction to the second screw member. 3 adjustment members are provided.

  According to the said structure, the edge part of a connection part is pushed from the opposite direction to a 2nd screw member with a 3rd adjustment member, and the inclination of a standing board part is adjusted.

  In this way, by adjusting the inclination of the standing plate portion from the two directions, a load more than necessary is not applied to the regulating member.

  According to a seventh aspect of the present invention, in the paper feeding device according to the sixth aspect, a protruding wall is provided on the slide plate, and the third adjustment member is attached to the protruding wall so that an end portion of the connecting portion is provided. It is a 3rd screw member which adjusts the inclination of the said standing board part by pushing from the opposite direction to the said 2nd screw member, It is characterized by the above-mentioned.

  According to the said structure, the edge part of a connection part is pushed with the 3rd screw member from the opposite direction to a 2nd screw member, and the inclination of a standing board part is adjusted.

  In this way, the manufacturing cost can be reduced by adjusting the inclination of the upright plate portion from two directions by using screws which are general-purpose parts.

  The paper feeding device according to an eighth aspect of the present invention is the paper feeding device according to the seventh aspect, wherein at least one of the second screw member and the third screw member is plural in a direction orthogonal to the paper feeding direction or in the paper feeding direction. It is provided.

  According to the above configuration, since at least one of the second screw member and the third screw member is provided in a direction orthogonal to the paper feeding direction or in the paper feeding direction, the paper can be fed by changing the adjustment amount. The inclination with respect to the direction can be easily adjusted.

  The sheet feeding device according to a ninth aspect of the present invention is the sheet feeding device according to any one of the first to eighth aspects, wherein the regulating member is a side fence that regulates a stacking position in a direction perpendicular to a feeding direction of the sheet material. It is characterized by being.

  According to the above configuration, the side fence that is the restricting member restricts the stacking position of the sheet material in the direction orthogonal to the sheet feeding direction. For this reason, the positional deviation of the sheet material in the direction orthogonal to the sheet feeding direction of the sheet material is suppressed.

  According to a tenth aspect of the present invention, in the paper feeding device according to any one of the first to eighth aspects, the regulating member is an end fence that regulates a stacking position of the sheet material in a paper feeding direction. And

  According to the above configuration, the end fence that is a regulating member regulates the stacking position of the sheet material in the sheet feeding direction. For this reason, the positional deviation of the sheet material in the sheet feeding direction is suppressed.

  According to an eleventh aspect of the present invention, in the paper feeding device according to any one of the first to tenth aspects, the paper feeding device is connected to the image forming apparatus.

  According to the above configuration, since the sheet feeding device is connected to the image forming apparatus, there is no restriction in the height direction of the sheet feeding device, and a large capacity sheet material can be stacked on the sheet feeding device. Even when a large-capacity sheet material is stacked on the sheet feeding device, it is possible to prevent skew or registration of the sheet material by adjusting the regulating member by the tilt adjusting means.

  An image forming apparatus according to a twelfth aspect of the present invention includes the paper feeding device according to any one of the first to tenth aspects.

  According to the above configuration, the image forming apparatus is provided with the sheet feeding device described in any one of claims 1 to 10, so that the sheet material can be prevented by preventing skew and misregistration of the sheet material. An image can be formed at a predetermined position.

  According to the present invention, it is possible to suppress skew and registration of a sheet material while preventing double feeding of the sheet material.

  The image forming apparatus 10 including the paper feeding device 36 according to the first embodiment will be described with reference to FIGS.

  As shown in FIG. 9, the image forming apparatus 10 is configured to form a toner image on a sheet material P and discharge the sheet material P on which the toner image is formed by a discharge roll 14.

  A detachable paper cassette 16 is attached to the lower part of the image forming apparatus 10, and a plurality of sheet materials P are accommodated in each paper cassette 16. Further, a pickup roll 18 is disposed above the paper cassette 16, and the sheet material P is sequentially taken out by the pickup roll 18, and further conveyed one by one by the sheet feeding roll 12 and the retard roll 34 that are driven to rotate. It becomes the composition which is done.

  A plurality of transport rolls 20 that transport the sheet material P downstream in the transport direction along the transport path 22 are provided downstream of the pickup roll 18 in the paper transport direction.

  A photosensitive drum 24 is disposed in the conveyance path 22, and a charging image, an exposure process, and a developing process are performed on the photosensitive drum 24 so that a toner image is formed on the photosensitive drum 24. A transfer roll 26 is disposed at a position facing the photosensitive drum 24, and the transfer roll 26 transfers the toner image on the photosensitive drum 24 to the sheet material P.

  A fixing unit 28 including a pressure roll 28A and a heating roll 28B is disposed downstream of the photosensitive drum 24 and the transfer roll 26 in the conveying direction. The fixing unit 28 heat-fixes the toner image while nipping and conveying the sheet material P onto which the toner image has been transferred by the transfer roll 26.

  A sheet discharge port 30 is formed downstream of the fixing unit 28 in the transport direction, and a discharge roll 14 that discharges the sheet material P from the sheet discharge port 30 is disposed. A discharge tray 32 is attached below the paper discharge port 30 so that the discharged sheet material P is stacked.

  Further, on the opposite side of the discharge tray 32 in the image forming apparatus 10, a sheet feeding device 36 that supplies the sheet material P to the image forming apparatus 10 and can accommodate a large capacity sheet material P is connected to the image forming apparatus 10. Has been. A pick-up roll 40 is disposed above the sheet material P stacked on the paper feeding device 36. The pick-up roll 40 is sequentially taken out by the pick-up roll 40. Each sheet is fed from an outlet 50 provided in the sheet feeding device 36 to a receiving port 44 provided on a side surface of the image forming apparatus 10. Details of the paper feeding device 36 will be described later.

  In the image forming apparatus 10 configured as described above, an image is formed as follows.

  First, a charger (not shown) to which a voltage is applied uniformly charges the surface of the photosensitive drum 24 at a predetermined potential.

  Subsequently, an exposure unit (not shown) forms an electrostatic latent image on the photosensitive drum 24 based on the image data so that the image portion on the charged photosensitive drum 24 has a predetermined exposure portion potential.

  That is, an electrostatic latent image corresponding to the image is formed on the photosensitive drum 24 by the exposure device based on the video data supplied from the control device. Further, the electrostatic latent image is visualized as a toner image by toner supplied from a developing device (not shown).

  Therefore, in the case of paper feeding from the paper cassette 16, the sheet material P is sequentially taken out by the pickup roll 18, and further fed out one by one to the transport path 22 by the paper feed roll 12 and the retard roll 34 that are driven to rotate. Further, the sheet material P is nipped and conveyed by the plurality of conveyance rolls 20, passes between the photosensitive drum 24 and the transfer roll 26, and the toner image is transferred to the sheet material P. The transferred toner image is fixed on the sheet material P by passing between a pressure roll 28A and a heating roll 28B provided in the fixing unit 28.

  Further, the sheet material P is discharged by a discharge roll 14 to a discharge tray 32 provided on the side surface of the image forming apparatus 10.

  In the case of paper feeding from the paper feeding device 36, the sheet material provided in the paper feeding device 36 is sequentially taken out by the pickup roll 40, and is further rotated by the paper feeding roll 42 and the retard roll 48 that are rotationally driven. Sheets are fed from an outlet 50 provided in the sheet feeding device 36 to a receiving port 44 provided on a side surface of the image forming apparatus 10. The sheet material P supplied from the receiving port 44 is transported by the receiving roll 46 and sent out to the transport path 22. The fed sheet material P is nipped and conveyed by a plurality of conveyance rolls 20 as in the case of the sheet material P from the paper cassette 16, passes through between the photosensitive drum 24 and the transfer roll 26, and the toner image is transferred to the sheet material P. The The transferred toner image is fixed on the sheet material P by passing between a pressure roll 28A and a heating roll 28B provided in the fixing unit 28.

  Further, the sheet material P is discharged by a discharge roll 14 to a discharge tray 32 provided on the side surface of the image forming apparatus 10.

  Next, the paper feeding device 36 will be described in detail.

  As shown in FIGS. 8 and 9, a paper feeding device 36 is connected to the side of the image forming apparatus 10.

  As shown in FIG. 7, by pulling the grip 52A of the cover 52 provided on the front surface of the sheet feeding device 36 toward the front (in the direction of arrow A in the figure), the sheet material stacking unit 54 that stacks the sheet material P is provided. appear.

  As shown in FIG. 6, the sheet material stacking unit 54 is provided with a bottom plate 56 as a stacking plate on which the sheet material P is stacked. When feeding the sheet material P to the image forming apparatus 10, the bottom plate 56 is moved upward by an elevating means (not shown) to pick up the uppermost sheet material P placed on the bottom plate 56. It is configured to press against the roll 40 (see FIG. 9). Further, when the cover 52 is pulled forward (in the direction of arrow A in the figure), the bottom plate 56 is moved downward by the lifting means so that the sheet material P can be stacked on the sheet material stacking portion 54. It has become.

  Further, two fans 58 as air blowing means are provided in the cover 52 side by side in the horizontal direction. The fan 58 is connected to a power supply line (not shown), and the fan 58 rotates when the sheet material P is conveyed. As shown in FIG. It is configured to flow from the side (the end of the sheet material) into the upper sheet material P loaded on the bottom plate 56 through the circular air hole 52B.

  There is a problem that the upper and lower sheet materials P are brought into close contact with the burrs at the end portions generated when the sheet material P is cut, and this close contact causes the sheet material P to be double-fed. By spraying from the side of the sheet material P, air enters between the sheet material and the sheet material P can be separated vertically to prevent double feeding.

  Further, as shown in FIG. 5, an end fence 72 that regulates the stacking position of the sheet material P stacked on the bottom plate 56 in the sheet feeding direction is provided so as to contact the rear end portion of the sheet material P. .

  As shown in FIG. 3, the end fence 72 has an upright plate portion 72 </ b> A that determines the position of the sheet material P in the sheet feeding direction by hitting the end portion of the sheet material P, and the upright plate portion from the lower end edge of the upright plate portion 72 </ b> A. 72A extending in the orthogonal direction of 72A.

  Two guide members 74 that contact the lower surface of the connecting portion 72B and guide the end fence 72 in the sheet material feeding direction are provided below the connecting portion 72B. As shown in FIG. 5, the guide material 74 extends in the paper feeding direction, and the through portion 72D of the connecting portion 72B is inserted.

  A stop bar 76 extending in the paper feeding direction is provided between the two guide members 74, and a rack 76A shown in FIG. Further, the rack 76 </ b> A meshes with the rack 83 </ b> A of the support rod 83 provided on the end fence 72 to restrict the movement of the end fence 72 in the sheet material feeding direction.

  Specifically, the support rod 83 passes through a support plate 72C that projects horizontally from the end fence 72, and is movable up and down. A coil spring 85 is inserted between the support plate 72C and a stop plate 83B provided on the support rod 83, and the support rod 83 is urged downward by a spring force. Thus, the rack 83A of the support rod 83 and the rack 76A of the stop bar 76 are reliably engaged with each other. Further, when the end fence 72 is moved in the sheet feeding direction in accordance with the size of the sheet material P, the end fence 72 is rotatably attached to the upper end portion of the support rod 83, and the base end portion is pivotally supported by the upright plate portion 72A. Lift the tip of the lever 72F. Accordingly, the engagement between the rack 83A of the support rod 83 and the rack 76A of the stop bar 76 is released, and the end fence 72 is moved in the paper feeding direction. The bottom plate 56 is provided with a relief portion in accordance with the movement range of the end fence 72.

  Further, as shown in FIG. 6, the side fence 38 as a regulating member that regulates the position of the sheet material P stacked on the bottom plate 56 in the sheet feeding orthogonal direction perpendicular to the sheet feeding direction (arrow B direction in FIG. 6). Is provided to face the back surface of the cover 52.

  As shown in FIG. 2, the side fence 38 includes a slide plate 62 that is slidable in the direction perpendicular to the paper feed, and a contact plate 60 that is coupled to the slide plate 62. 60 includes a standing plate portion 60A that contacts the end portion of the sheet material P, and a connecting portion 60B that extends along the slide plate 62 from the end portion of the standing plate portion 60A.

  As shown in FIG. 4, the slide plate 62 is a substantially rectangular flat plate member that extends in the sheet feeding direction of the sheet material P (arrow B in FIG. 4), and the contact plate 60 is provided in the connecting portion 60 </ b> B. The two bolts 70 are attached to the slide plate 62. Specifically, as shown in FIG. 2, the bolt 70 is attached from above to a mounting hole 60C provided in the connecting portion 60B, and is further tightened into a mounting hole 62A provided in the slide plate 62 with a gap therebetween. It is included.

  Further, as shown in FIGS. 2 and 4, two first screw members 78 are screwed to the connecting portion 60 </ b> B along the paper feeding direction from above, and the tip of the first screw member 78 is connected to the connecting portion 60 </ b> B. It penetrates the portion 60B and is abutted against the slide plate 62.

  A shaft 64 having a rack 64A that meshes with a rack 62B provided on the lower surface of the slide plate 62 is disposed below the slide plate 62 so as to extend in the direction perpendicular to the paper feed. On both sides of the shaft 64, guide rods 66 and 68 for guiding the contact plate 60 in the direction perpendicular to the paper feed are provided through the slide plate 62.

  The rack 62B is urged toward the lower shaft 64 by a spring 63 provided on the upper surface of the rack 62B, and the rack 62B and the rack 64A are reliably engaged with each other.

  When changing the size of the sheet material P stacked on the bottom plate 56, if the side fence 38 is moved in the paper feeding orthogonal direction, the rack 62B compresses the spring 63 along the tapered surface of the rack 62B. Moving upward, the meshing between the rack 62B and the rack 64A is released. Thereby, the side fence 38 is moved in the sheet feeding orthogonal direction, and the upright plate portion 60A is applied to the end portion of the sheet material P of a new size. The bottom plate 56 is provided with a relief portion in accordance with the movement range of the side fence 38.

  Here, the vertical plate portion 60A of the side fence 38 and the end portion of the sheet material P are caused by variations in the component accuracy of the side fence 38, variations in the mounting position accuracy, and play between components necessary for moving the side fence 38. In some cases, a gap S is generated as shown in FIG. Further, the size of the sheet material P changes under the influence of humidity and temperature, and the gap S may occur. In particular, when a large capacity sheet material P is stacked, a small inclination of the standing plate portion 60A of the side fence 38 affects the gap S between the sheet material P stacked on the upper side and the standing plate portion 60A. .

  Therefore, as shown in FIG. 1A, when the upright plate portion 60A is inclined and a gap S is generated between the upper end portion of the sheet material P placed on the upper side, the first screw member 78 is screwed and the tip is brought into contact with the slide plate 62. Thereby, as shown in FIG. 1B, the inclination of the standing plate portion 60A is adjusted by adjusting the inclination of the connecting portion 60B, and the gap S between the standing plate portion 60A and the end of the sheet material P is small. Become.

  In this way, by reducing the gap S between the end portions of the standing plate portion 60A and the sheet material P, even if air is blown from the side to the sheet material P, the positional deviation of the sheet material P is prevented. The skew and registration of the sheet material P can be suppressed while preventing double feeding.

  Although the present invention has been described in detail with respect to specific embodiments, the present invention is not limited to such embodiments, and various other embodiments are possible within the scope of the present invention. It is clear to the contractor. For example, in the above embodiment, the adjusting unit for adjusting the regulating member is provided on the side fence 38 to regulate the stacking position of the sheet material P in the sheet feeding orthogonal direction, but the adjusting unit is provided on the end fence 72 to adjust the sheet feeding direction. The stacking position of the sheet material P may be regulated.

  In the above-described embodiment, the adjustment unit is provided on the side fence 38 of the paper feeding device 36 provided continuously with the image forming apparatus 10. However, the adjustment unit is provided on the side fence of the paper cassette 16 provided in the image forming apparatus 10. The position of the sheet material P that is provided and stacked on the paper cassette 16 may be regulated.

  Next, the image forming apparatus 10 including the paper feeding device 36 according to the second embodiment will be described with reference to FIGS.

  In addition, about the same member as 1st Embodiment, the same code | symbol is attached | subjected and the description is abbreviate | omitted.

  As shown in FIG. 11, in this embodiment, as in the first embodiment, the connecting plate 60 </ b> B is tilted by the adjusting bolt 78 provided on the connecting portion 60 </ b> B of the contact plate 60 to tilt the standing plate 60 </ b> A. The vertical plate is not adjusted, but is moved forward and backward by moving the second screw member 80 whose tip is abutted against the back surface of the standing plate portion 60A and the third screw member 82 whose tip is abutted against the end portion of the connecting portion 60B. The inclination of the part 60A is adjusted.

  Specifically, a slide plate 84 to which the contact plate 60 is attached is provided outside the contact plate 60 so as to extend in the paper feeding direction. The slide plate 84 is substantially L-shaped, and rises along the standing plate portion 60A. The bottom plate 84A extends along the bottom plate 56 from the lower end edge of the standing wall 84A and is disposed below the connecting portion 60B. 84B, and a projecting wall 84D that faces the upright wall 84A and extends upward from the end of the bottom plate 84B.

  As shown in FIG. 13, two long holes 60 </ b> E extending in the paper feed orthogonal direction are provided in the connecting portion 60 </ b> B of the contact plate 60 side by side in the paper feed direction. As shown in FIG. 11, the contact plate 60 is attached to the slide plate 84 by tightening bolts 86 to the slide plate 84 from above through the long holes 60 </ b> E. Here, since the long hole 60E extends in the sheet feeding orthogonal direction, the contact plate 60 is movable on the surface of the slide plate 84.

  The second screw member 80 is attached from the outside to a circular hole 84C provided in the standing wall 84A of the slide plate 84, and the distal end portion of the second screw member 80 penetrates the standing wall 84A and projects into the standing plate portion 60A. It has been applied.

  Further, the third screw member 82 is attached to a circular hole 84E provided in the projecting wall 84D of the slide plate 84, and the distal end portion of the third screw member 82 penetrates the projecting wall 84D and is an end portion of the connecting portion 60B. Has been hit.

  As shown in FIG. 10A, when the standing plate portion 60A is inclined and a gap S is generated between the upright end portion of the sheet material P placed on the upper side, the bolt 86 is first loosened. Set temporarily.

  Next, by tightening the third screw member 82, the base end portion 60F of the standing plate portion 60A is moved as shown in FIG. Next, as shown in FIG. 10C, the inclination of the standing plate portion 60A is adjusted by tightening the second screw member 80 from the opposite direction of the third screw member 82, and the standing plate portion 60A and the sheet material. The gap S at the end of P can be reduced. Finally, the bolt 86 is tightened to finish the work.

  Thus, since the inclination of the standing plate portion 60A can be adjusted while moving the base end portion 60F of the standing plate portion 60A, fine adjustment can be performed. By reducing the gap S by this adjustment, even if air is blown onto the sheet material P from the side, the positional displacement of the sheet material P is prevented. Can be suppressed.

  Also, as shown in FIG. 12A, when the upright plate portion 60A is inclined with respect to the sheet feeding direction and a gap K is generated between the end portions of the sheet material P, the sheet material P By adjusting the second screw member 80 and the third screw member 82 on the distal end side (upper side in the drawing), as shown in FIG. 12B, the inclination of the standing plate portion 60A is adjusted and the standing plate portion 60A is adjusted. And the gap K between the ends of the sheet material P can be reduced, and the inclination with respect to the sheet feeding direction can be easily adjusted.

(A) It is sectional drawing which showed the state which the clearance gap has generate | occur | produced in the contact plate of the paper feeder which concerns on 1st Embodiment of this invention, and the edge part of the sheet | seat material. (B) It is sectional drawing which showed the state which reduced the clearance gap which generate | occur | produced in the contact plate of the paper feeder which concerns on 1st Embodiment of this invention, and the edge part of the sheet | seat material. It is sectional drawing which showed the side fence of the paper feeder which concerns on 1st Embodiment of this invention. It is sectional drawing which showed the end fence of the paper feeder which concerns on 1st Embodiment of this invention. FIG. 3 is a plan view showing a side fence and its periphery of the sheet feeding device according to the first embodiment of the present invention. 1 is a plan view illustrating a sheet feeding device according to a first embodiment of the present invention. FIG. 2 is a perspective view illustrating a state in which the cover is opened showing the sheet feeding device according to the first embodiment of the present invention. FIG. 2 is a perspective view illustrating a state in which the cover is opened showing the sheet feeding device according to the first embodiment of the present invention. FIG. 3 is a perspective view illustrating the sheet feeding device according to the first exemplary embodiment of the present invention with the cover closed. 1 is a schematic configuration diagram illustrating a sheet feeding device and an image forming apparatus according to a first embodiment of the present invention. (A) It is sectional drawing which showed the state in which the clearance gap has generate | occur | produced in the contact plate of the paper feeder which concerns on 2nd Embodiment of this invention, and the edge part of the sheet | seat material P. FIG. (B) It is sectional drawing which showed the state which is adjusting the inclination of the contact plate of the paper feeder which concerns on 2nd Embodiment of this invention. (C) It is sectional drawing which showed the state which reduced the clearance gap which generate | occur | produced in the contact plate of the paper feeder which concerns on 2nd Embodiment of this invention, and the edge part of the sheet | seat material P. FIG. It is sectional drawing which showed the side fence, bottom plate, fan, etc. of the paper feeder which concerns on 2nd Embodiment of this invention. (A) It is the top view which showed the state which the clearance gap has generate | occur | produced in the contact plate of the paper feeder which concerns on 2nd Embodiment of this invention, and the edge part of the sheet | seat material P. FIG. (B) It is the top view which showed the state which reduced the clearance gap which generate | occur | produced in the edge part of the contact plate and sheet material P of the paper feeder which concerns on 2nd Embodiment of this invention. It is the top view which showed the paper feeder concerning 2nd Embodiment of this invention.

Explanation of symbols

10 Image forming device 36 Paper feeding device 38 Side fence 56 Bottom plate (stacking plate)
58 Fan (Air blowing means)
60 Abutting plate 60A Standing plate portion 60B Connecting portion 62 Slide plate 78 First screw member 80 Second screw member 82 Third screw member 84 Slide plate 84A Standing wall 84D Projecting wall

Claims (12)

A loading plate on which sheet material is loaded;
Spraying means for blowing air to the end of the sheet material stacked on the stacking plate;
A movable restricting member that restricts the sheet feeding position by hitting the end of the sheet material stacked on the mounting plate;
An inclination adjusting means for adjusting an inclination in a height direction of the regulating member or an inclination with respect to a paper feeding direction;
A sheet feeding device comprising: The restricting member includes a slide plate that is slidable in the surface direction of the stacking plate, and a contact plate that is connected to the slide plate at a connecting portion and abuts against an end portion of the sheet material,
The tilt adjusting means is a first adjusting member that tilts a connecting portion of the abutting plate and adjusts an inclination of a standing plate portion of the abutting plate that contacts an end portion of the sheet material. Item 2. The sheet feeding device according to Item 1.   The connecting portion extends along the slide plate from an end portion of the upright plate portion, the first adjustment member is attached to the connecting portion, a tip portion abuts on the slide plate, and a screw is engaged. The sheet feeding device according to claim 2, wherein the sheet feeding device is a first screw member that tilts the connecting portion by an amount to adjust the inclination of the standing plate portion. The restricting member includes a slide plate that is slidable in the surface direction of the stacking plate, and a contact plate that is connected to the slide plate at a connecting portion and abuts against an end portion of the sheet material,
The inclination adjusting means includes a second adjustment member that is attached to the slide plate and adjusts the inclination of the standing plate portion by pushing the standing plate portion of the contact plate that contacts the end portion of the sheet material. The paper feeding device according to claim 1.   The slide plate includes a standing wall that rises along the standing plate portion, and the second adjustment member is a second screw member that is attached to the standing wall and pushes the standing plate portion to adjust the inclination of the standing plate portion. 5. The sheet feeding device according to claim 4, wherein the sheet feeding device is provided.   The connecting portion extends from the end of the standing plate portion along the slide plate, and is connected to the slide plate so as to be movable in the surface direction of the slide plate. The sheet feeding device according to claim 5, further comprising a third adjustment member that is attached to the second adjustment member and adjusts an inclination of the upright plate portion by pushing an end portion of the connecting portion from a direction opposite to the second screw member.   A protruding wall is provided on the slide plate, and the third adjustment member is attached to the protruding wall and adjusts the inclination of the standing plate portion by pushing the end of the connecting portion from the opposite direction to the second screw member. The sheet feeding device according to claim 6, wherein the sheet feeding device is a third screw member.   The paper feeding device according to claim 7, wherein at least one of the second screw member and the third screw member is provided in a plurality in a direction orthogonal to the paper feeding direction or in the paper feeding direction.   The sheet feeding device according to claim 1, wherein the regulating member is a side fence that regulates a stacking position in a direction orthogonal to a sheet feeding direction of the sheet material.   The sheet feeding device according to claim 1, wherein the regulating member is an end fence that regulates a stacking position of the sheet material in a sheet feeding direction.   11. The paper feeding device according to claim 1, wherein the paper feeding device is connected to the image forming apparatus.   An image forming apparatus comprising the paper feeding device according to claim 1.

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