Patent application number | Description | Published |
20080284091 | SHEET DELIVERY APPARATUS - Provided is a sheet delivery apparatus for delivering a sheet to a delivery tray, including: a pair of delivery rotary members for nipping and delivering the sheet guided by the guide portion; and a projection that rotates about an axis being the same as an axis of one of the pair of delivery rotary members, is abutted against a trailing end of the sheet, and pushes out the trailing end of the sheet toward a delivery tray side. The guide portion deforms the sheet so that the sheet does not contact the projection, and after the trailing end of the sheet has passed through the guide portion, the projection and the trailing end of the sheet are abutted against each other. | 11-20-2008 |
20090026696 | SHEET PROCESSING APPARATUS AND IMAGE FORMING APPARATUS INCLUDING THE SAME - A sheet processing apparatus includes an intermediate stacking portion which temporarily stacks, thereon, a sheet conveyed thereto; a discharge portion which discharges sheet stacked on the intermediate stacking portion; an aligning member which is provided downstream of the discharge portion in a sheet conveying direction and has a sheet holding surface capable of holding the lower surfaces of the sheet and a sheet aligning surface capable of abutting against end portions of the sheet in the widthwise direction orthogonal to the sheet conveying direction, the aligning member being movable in the widthwise direction; a first stacking portion which is provided below the aligning member and stacks, thereon, a sheet discharged from the discharge portion; and a second stacking portion which is provided above the aligning member and stacks, thereon, a sheet conveyed thereto; wherein a standby position of the aligning member is at a position more inward than the outermost position in the widthwise direction, within the range through which the aligning member is movable. | 01-29-2009 |
20090146369 | SHEET STACKING APPARATUS, SHEET PROCESSING APPARATUS, AND IMAGE FORMING APPARATUS - The present invention provides a sheet stacking apparatus, whose lifting and lowering mechanism having excellent assembly properties and maintenance properties. | 06-11-2009 |
20100052241 | SHEET CONVEYANCE APPARATUS, SHEET PROCESSING APPARATUS, AND IMAGE FORMING APPARATUS - A presser member which abuts on a sheet which passes through a sheet conveyance path, and rotates toward a sheet conveyance direction while being pressed by the sheet is provided rotatably in the sheet conveyance path where the sheet conveyed to a sheet stack portion passes, and a move portion to which this presser member is retracted from the sheet conveyance path is provided. When drawing out a jammed sheet from the sheet conveyance path in a direction reverse in a sheet conveyance direction, a jam recovery door is opened, the move portion is operated in connection with this opening motion, and the presser member is retracted from the sheet conveyance path. | 03-04-2010 |
20100171256 | Sheet Processing Apparatus and Image Forming Apparatus - The present invention provides a sheet processing apparatus that can prevent, with higher certainty, lift of the trailing end of each sheet placed in sheet stacking portion. This apparatus includes a first holding member and a second holding member that prevent lift of the trailing end of each sheet from an intermediate stacking portion. When introduced to the intermediate stacking portion, the subsequent sheet comes into contact with the first holding member, so that the first holding member moves to the retracting position. As the subsequent sheet continues to be conveyed, the subsequent sheet comes into contact with the second holding member, so that the second holding member moves from the restricting position to the retracting position. As the trailing end of the sheet is introduced, the first holding member moves from the retracting position to the restricting position, to hold down the trailing end of the sheet. | 07-08-2010 |
20100264581 | SHEET PROCESSING APPARATUS AND IMAGE FORMING APPARATUS PROVIDED WITH THE SAME - A sheet processing apparatus comprises: an first stack portion which temporarily stacks a sheet thereon; a first stack portion which is disposed under the first stack portion and stacks thereon a sheet discharged from the first stack portion; a second stack portion which is disposed above the first stack portion and stacks a sheet thereon; a stack reference wall which serves as an abutment reference at an end of the sheet on the second stack portion; and an alignment reference wall which is disposed more upstream in the sheet conveyance direction than the stack reference wall and serves as an abutment reference at an end of the sheet on the first stack portion; wherein the second stack portion has such a length that an end of the sheet stacked on the first stack portion cannot project from the second stack portion, as viewed from above in a vertical direction. | 10-21-2010 |
20110024973 | SHEET PROCESSING APPARATUS AND IMAGE FORMING APPARATUS - In a sheet processing apparatus, a pair of regulating members is provided at a pair of joggers so that the regulating members are movable together with the joggers. When the pair of joggers is laterally moved, the pair of regulating members also laterally moves together with the pair of joggers. By moving the pair of joggers to passage positions, the pair of regulating members regulates the lateral ends of a sheet, which falls and is stacked on a first stacking tray. | 02-03-2011 |
20110084442 | SHEET PROCESSING APPARATUS AND IMAGE FORMING APPARATUS INCLUDING THE SAME - A sheet processing apparatus includes an intermediate stacking portion which temporarily stacks, thereon, a sheet conveyed thereto; a discharge portion which discharges sheet stacked on the intermediate stacking portion; an aligning member which is provided downstream of the discharge portion in a sheet conveying direction and has a sheet holding surface capable of holding the lower surfaces of the sheet and a sheet aligning surface capable of abutting against end portions of the sheet in the widthwise direction orthogonal to the sheet conveying direction, the aligning member being movable in the widthwise direction; a first stacking portion which is provided below the aligning member and stacks, thereon, a sheet discharged from the discharge portion; and a second stacking portion which is provided above the aligning member and stacks, thereon, a sheet conveyed thereto; wherein a standby position of the aligning member is at a position more inward than the outermost position in the widthwise direction, within the range through which the aligning member is movable. | 04-14-2011 |
20120025455 | SHEET CONVEYING APPARATUS AND IMAGE FORMING APPARATUS - A sheet conveying apparatus includes a first sheet conveying path, a second sheet conveying path branched from the first sheet conveying path, a switching member capable of moving in the branch portion of the first sheet conveying path and the second sheet conveying path, and a first regulation member and a second regulation member which regulate the movement of the switching member, wherein when the first regulation member is abutted against the switching member, the first regulation member forms a gap having a first interval through which the sheet can pass to the second sheet conveying path, when the switching member is further moved forward, and when the second regulation member is abutted against the switching member, the second regulation member forms a gap having a second interval smaller than the first interval through which the sheet can pass to the second sheet conveying path. | 02-02-2012 |
20130155163 | IMAGE FORMING APPARATUS - An image forming apparatus includes: an image bearing member configured to bear a toner image; a plurality of electrode portions; a control unit configured to control a voltage applied to the electrode unit based on image information; and a toner bearing member configured to bear toner and form a toner image on the image bearing member according to the voltage applied to the electrode portion, in which α>1.22 is satisfied and rx″/ry″ is defined as α, where Dy indicates a thickness of the image bearing member, Dx indicates a distance between the electrode portions adjacent to each other, rx″ indicates a resistance component of the image bearing member in a direction parallel to Dx and ry″ indicates a resistance component of the image bearing member in a direction parallel to Dy in a rectangular solid body including Dx and Dy in a side. | 06-20-2013 |
20130181394 | SHEET CONVEYING APPARATUS AND IMAGE FORMING APPARATUS - A sheet conveying apparatus, including: a sheet conveying path; a reconveying path, which is branched from the sheet conveying path; a sheet conveying portion which conveys a sheet, which is conveyed through the sheet conveying path, selectively between in a forward direction and in a reverse direction toward the reconveying path; and a control portion which controls the sheet conveying portion to temporarily convey, in the middle that the sheet conveying portion conveys a preceding sheet in the reverse direction toward the reconveying path, the preceding sheet in the forward direction together with a succeeding sheet, and thereafter convey the preceding sheet in the reverse direction toward the reconvening path and the succeeding sheet in the forward direction respectively. | 07-18-2013 |
20130187330 | SHEET CONVEYING APPARATUS AND IMAGE FORMING APPARATUS - A sheet conveying apparatus which conveys a sheet, including: a first conveying path along which the sheet is conveyed; a second conveying path along which the sheet is reconveyed to the first conveying path; a reverse conveyance roller pair, which performs forward rotation to convey the sheet from the first conveying path and reverse rotation to convey the sheet to the second conveying path; a reconveying roller pair disposed in the second conveying path; and a control portion which causes the reconveying roller pair to nip a preceding sheet and a succeeding sheet in an overlaid manner, and thereafter rotates a first roller that is in contact with the preceding sheet while stopping rotation of a second roller that is in contact with the succeeding sheet so that the preceding sheet is conveyed to the first conveying path and the succeeding sheet stays in the second conveying path. | 07-25-2013 |
20130293909 | IMAGE FORMING APPARATUS - The image forming apparatus includes a conveyance path that is used to convey a recording material to form an image on the recording material, a reading unit that reads an original conveyed in the conveyance path, and a control unit that controls a recording material conveyance operation to selectively convey the recording material and the original to the conveyance path. | 11-07-2013 |
20130293937 | READING APPARATUS - A reading apparatus including:
| 11-07-2013 |
20130322943 | BELT CONVEYANCE APPARATUS AND IMAGE FORMING APPARATUS - A rotating member provided on an end of a stretching member is rotatable around a rotating axis inclined with respect to the shaft of the stretching member. In order that, when a belt end winds around the rotating member, the belt end winds around an outer side of an entry position where the belt end enters the rotating member, an outer circumferential surface of the rotating member in an area in contact with an inner circumferential surface of the belt is inclined with respect to a belt contact surface. | 12-05-2013 |
20140054139 | BELT DRIVING APPARATUS AND IMAGE FORMING APPARATUS - A belt feeding unit includes a rotatable belt; a first stretching roller; a second stretching roller including a stretching portion; a supporting portion for supporting the stretching portion while permitting movement of opposite end portions thereof up and down; a rotatable portion coaxial with the second stretching roller; wherein when the belt shifts in the longitudinal direction, the belt contacts the rotatable portion to rotate the rotatable portion, thus tilting the second stretching roller about the supporting portion relative to a rotational axis of the first stretching roller. | 02-27-2014 |
20140320873 | IMAGE FORMING APPARATUS - An image forming apparatus includes a sheet feeding unit, an image forming unit, a first conveyance path configured to guide the sheet fed from the sheet feeding unit, a second conveyance path configured to guide the sheet on one surface of which an image has been formed by the image forming unit to the first conveyance path again, a document feeding unit configured to feed a document to the second conveyance path, an image reading unit configured to read the document, a third conveyance path branching off from the second conveyance path and configured to guide the document, a switch back conveyance unit configured to convey the document in the third conveyance path, a fourth conveyance path configured to guide the document conveyed by the switch back conveyance unit, and a document discharge unit configured to discharge the document guided by the fourth conveyance path. | 10-30-2014 |
20140320877 | IMAGE FORMING APPARATUS - An image forming apparatus includes a first conveying path guiding a sheet such that the sheet passes through the image forming portion, a second conveying path guiding the sheet on which the image is formed by the image forming portion to the first conveying path. A document is fed to the second conveying path and the image forming apparatus includes a first drive transmission portion transmitting a drive force to the image forming portion and a second drive transmission portion transmitting the drive force to a document feeding portion, a conveyance portion and a document discharge portion. | 10-30-2014 |
20140320929 | IMAGE READING APPARATUS AND IMAGE FORMING APPARATUS INCLUDING THE SAME - An image reading apparatus includes a reading unit having a reading surface and being rotatable about an axis of rotation, and a facing member that comes into contact with the reading unit and faces the reading surface when the reading unit is at a reading position. The reading unit is capable of reading a portion of an object that faces the reading surface when the reading unit is at the reading position. When the reading unit is at a position other than the reading position, the reading surface is positioned nearer to the axis of rotation than when the reading unit is at the reading position and the reading unit is spaced apart from the facing member. | 10-30-2014 |
20140320939 | IMAGE FORMING APPARATUS - An image forming apparatus includes a first conveying path which connects between a sheet feed portion and a sheet discharging portion, and on which a image forming portion is arranged. The image forming apparatus further includes a second conveying path configured to guide the sheet on which the image has been formed on one surface thereof by the image forming portion to the first conveying path again, a document conveying path, and a reading portion. The document conveying path includes a document feeding path, a document discharging path, and a common conveying path which serves as at least a part of the second conveying path, and guides the document from a document feed portion to a document discharging portion through the document feeding path, the common conveying path and the document discharging path without causing the document to pass through the image forming position. The reading portion reads a first face and a second face of the document which is fed from the document feed portion. | 10-30-2014 |
20140320940 | IMAGE FORMING APPARATUS - An image forming apparatus includes a sheet feed portion configured to feed a sheet, an image forming portion configured to form an image on the sheet, a first conveying path configured to guide the sheet fed from the sheet feed portion such that the sheet passes through the image forming portion, a second conveying path configured to guide the sheet on which the image has been formed on one surface thereof by the image forming portion to the first conveying path again, a document feed portion configured to feed a document to the second conveying path, an image reading portion configured to read an image of the document fed by the document feed portion, and a control portion configured to control the sheet feed portion and the document feed portion such that the document and the sheet are conveyed on the second conveying path in a sequence in which the document and the sheet are mixed in a case where an operation of forming images respectively on both surfaces of a plurality of sheets overlaps with an operation of reading images of a plurality of documents. | 10-30-2014 |
20140320941 | READING APPARATUS - In a reading apparatus including a first conveying device including a first and a second movable unit to cause the sheet to pass through the first position; and a second conveying device including a third and a fourth movable unit to cause the sheet to pass through the second position; characterized in that when the reading device reads the sheet at the first position, a moving velocity of the second movable unit is larger than a moving velocity of the first movable unit, and when the reading device reads the sheet at the second position, a moving velocity of the fourth movable unit is larger than a moving velocity of the third movable unit. | 10-30-2014 |
20140321897 | IMAGE FORMING APPARATUS - An image forming apparatus includes a document separation and feed portion separating and feeding a document, a document discharge roller pair discharging the document, and a sheet discharge roller pair discharging a sheet. The document separation and feed portion or the document discharge roller pair is disposed so as to overlap with the sheet discharge roller pair in a vertical direction. | 10-30-2014 |
20140327921 | IMAGE FORMING APPARATUS - The image forming apparatus includes an image forming unit, a reading unit, first and second original sheet conveyance paths, a common conveyance path in which a recording material or the original sheet is conveyed to form an image, a third original sheet conveyance path that connects the first original sheet conveyance path and the second original sheet conveyance path and is used for conveying the original sheet conveyed in the second original sheet conveyance path to the common conveyance path, and a control unit that controls so as to convey the original sheet conveyed in the second original sheet conveyance path to the common conveyance path via the third original sheet conveyance path, and form an image on the original sheet. | 11-06-2014 |
20140339056 | BELT CONVEYOR UNIT AND IMAGE FORMING APPARATUS - An inclined flange roller is located outward of an end portion of a tension roller in the belt width direction. The inclined flange roller includes a flange surface capable of being in contact with the edge portion of a belt in a region in which the belt is wound around the tension roller and a roller surface capable of being in contact with an inner peripheral surface of the belt between the flange surface and an end portion of the tension roller in the belt width direction. | 11-20-2014 |