Patent application number | Description | Published |
20080217845 | SHEET PROCESSING APPARATUS AND IMAGE FORMING APPARATUS - A sheet processing apparatus has: a plurality of conveying paths which convey sheets; and front and back aligning members which perform width alignment in the direction which crosses the sheet conveying direction of the sheets conveyed from the conveying paths. Standby positions when the front and back aligning members approach side edges of the sheets from the standby positions and perform the width alignment of the sheets at the width aligning position are made different every sheet on the basis of discharge position information of the sheets to the plurality of conveying paths. | 09-11-2008 |
20080277857 | SHEET PROCESSING APPARATUS AND IMAGE FORMING APPARATUS EQUIPPED WITH THE SAME - The sheet processing apparatus is equipped with a process tray on which sheets conveyed are stacked, a return belt which moves the sheets stacked on the process tray, a trailing edge stopper which receives an end portion of the sheets moved by the return belt, and a conveyance assist roller which comes into contact with the sheets on the upstream side of the return belt with respect to the sheet moving direction and imparts a load to the movement of the sheets. The return belt moves the sheets to which a load has been imparted by the conveyance assist roller and causes them to be abutted on the trailing edge stopper. | 11-13-2008 |
20090008856 | SHEET PROCESSOR AND IMAGE-FORMING APPARATUS - A sheet processor includes a holding unit for holding a folded batch of sheets, a pressing member for pressing against a folded portion of the batch of sheets, a nipping member for nipping portions of the batch adjacent to the folded portion so as to nip the batch of sheets from opposite directions, and a casing for supporting the pressing member and the nipping member. | 01-08-2009 |
20090014936 | SHEET PROCESSING APPARATUS AND IMAGE FORMING APPARATUS - The present invention provides a sheet processing apparatus and an image forming apparatus which can achieve reduction of running cost. A notch part forming portion | 01-15-2009 |
20090035002 | SHEET PROCESSING APPARATUS AND IMAGE FORMING APPARATUS - There are provided a sheet processing apparatus and an image forming apparatus which can adjust adhesive strength by a simple configuration. | 02-05-2009 |
20090039585 | SHEET PROCESSING APPARATUS AND IMAGE FORMING APPARATUS - A current invention provides a sheet processing apparatus and an image forming apparatus capable of obtaining a sheet bundle which can be double-leaved and released without use of any binding device. A slit S to which a projection Pa provided at an end portion opposite to a side to be bound by a binding portion of a front cover P | 02-12-2009 |
20090115118 | SHEET PROCESSING APPARATUS AND IMAGE FORMING APPARATUS - A sheet processing apparatus has: a plurality of conveying paths which convey sheets; and front and back aligning members which perform width alignment in the direction which crosses the sheet conveying direction of the sheets conveyed from the conveying paths. Standby positions when the front and back aligning members approach side edges of the sheets from the standby positions and perform the width alignment of the sheets at the width aligning position are made different every sheet on the basis of discharge position information of the sheets to the plurality of conveying paths. | 05-07-2009 |
20090115129 | SHEET DISCHARGE APPARATUS, SHEET PROCESSING APPARATUS, AND IMAGE FORMING APPARATUS - The representative configuration of a sheet discharge apparatus, a sheet processing apparatus, and an image forming apparatus according to the present invention includes: a lower discharge tray which stacks a sheet thereon; a pair of discharge rollers which discharge the sheet onto the lower discharge tray; and a changing unit (abutment member, eccentric cam, and discharge angle moving motor) which changes the discharge angle of the pair of discharge rollers, wherein the changing unit changes the discharge angle of the pair of discharge rollers such that a first discharge direction in a first discharge mode which discharges each sheet is closer to the lower discharge tray than a second discharge direction in a second discharge mode which discharges a plurality of overlapped sheets. | 05-07-2009 |
20090140483 | SHEET PROCESSING APPARATUS AND IMAGE FORMING APPARATUS PROVIDED WITH THE SAME - When a sheet bundle is being conveyed by any one pair of plural pairs of rollers independently movable toward and away from the bundle sheet, before the bound portion of the sheet bundle passes the pair of rollers, the pair of rollers on the downstream side nearest to the bound portion are separated from the sheet bundle, and the pairs of rollers more downstream than that pair convey the sheet bundle. Thereby, it happens less often that the pairs of rollers gather the air collected between adjacent ones of the sheets of the sheet bundle to the bound portion to thereby cause a slack to the sheets, and the occurrence of wrinkles or twists in the sheet bundle can be reduced. Also, the pair of rollers are separated from the sheet bundle before the bound portion passes the pair of rollers, whereby it happens less often that the pair of rollers are damaged by the bound portion, and the sheet bundle can be conveyed smoothly. | 06-04-2009 |
20090218745 | SHEET STACKING APPARATUS AND SHEET PROCESSING APPARATUS - The present invention provides a sheet stacking apparatus which has a pair of lower discharge rollers which discharges a sheet, a processing tray which stacks the sheet discharged from the pair of lower discharge rollers, a trailing end stopper which aligns the trailing end portion in the conveying direction of the sheet bundle stacked on the processing tray, and pull-in paddles which drop the sheet discharged from the pair of lower discharge rollers on the processing tray and conveys the sheet to abut against the trailing end stopper where the pull-in paddles rotate at a first rotating speed so that the sheet discharged from the pair of lower discharge rollers is dropped on the processing tray and the pull-in paddles rotate at a second rotating speed, slower than the first rotating speed, so that the sheet abuts against the trailing end stopper. | 09-03-2009 |
20090267282 | SHEET PROCESS APPARATUS - Provided is a shift transport device for transporting a sheet to a sheet transport direction upstream side of a sheet process tray and for shifting the sheet. The shift transport device offsets the sheet and the sheets are stacked on a sheet process tray. Then, the sheets stacked on the sheet process tray in a state of being offset are aligned by an aligning member. | 10-29-2009 |
20090283957 | SHEET PROCESSING APPARATUS - A sheet processing apparatus includes an aligning member and a shift conveying unit. The aligning member is movable in a width direction perpendicular to a sheet conveying direction and presses a sheet stack loaded on a sheet processing tray so as to align the sheet stack in the width direction. The unit is provided on the upstream side of the tray and conveys a sheet, shifting the sheet in the width direction. Being shifted by the unit, sheets are loaded at first and second loading positions on the tray. When sheets are loaded at the first loading position, the aligning member is moved to a first standby position corresponding to the first loading position in advance. When sheets are loaded at the second loading position, the aligning member is moved in advance to a second standby position corresponding to the second loading position. | 11-19-2009 |
20100252980 | SHEET PROCESSING APPARATUS AND IMAGE FORMING APPARATUS PROVIDED WITH THE SAME - When a sheet bundle is being conveyed by any one pair of plural pairs of rollers independently movable toward and away from the bundle sheet, before the bound portion of the sheet bundle passes the pair of rollers, the pair of rollers on the downstream side nearest to the bound portion are separated from the sheet bundle, and the pairs of rollers more downstream than that pair convey the sheet bundle. Thereby, it happens less often that the pairs of rollers gather the air collected between adjacent ones of the sheets of the sheet bundle to the bound portion to thereby cause a slack to the sheets, and the occurrence of wrinkles or twists in the sheet bundle can be reduced. Also, the pair of rollers are separated from the sheet bundle before the bound portion passes the pair of rollers, whereby it happens less often that the pair of rollers are damaged by the bound portion, and the sheet bundle can be conveyed smoothly. | 10-07-2010 |
20110133392 | SHEET PROCESSING APPARATUS AND IMAGE FORMING APPARATUS INCLUDING SAME - A sheet processing apparatus capable of improving sheet processing performance and productivity is provided. While sheets are conveyed in a piled state toward a rear-end stopper, displacement is produced between the sheets by a pair of discharge rollers. Even if adhesion occurs between the sheets during conveyance thereof, the adhesion between the sheets can be removed before the sheets come into contact with the rear-end stopper. | 06-09-2011 |
20110280625 | SHEET CONVEYING APPARATUS, SHEET PROCESSING APPARATUS, AND IMAGE FORMING APPARATUS - A roller separating mechanism rotates an upper roller-moving cam and a lower roller-moving cam at the same time, and swings the upper roller arm plate and the lower roller arm plate such that a pair of folding rollers separate from each other. When the pair of folding rollers are to be abutted against each other, the upper roller arm plate and the lower roller arm plate are swung with different timing in a direction in which the pair of folding rollers abut against each other. | 11-17-2011 |
20110286828 | SHEET PROCESSING APPARATUS AND IMAGE FORMING APPARATUS - A sheet processing apparatus includes a processing tray configured to stack a sheet to be processed, a sheet overlap unit configured to allow a sheet fed while the sheet to be processed is stacked on the processing tray, to be overlaid and made to wait, first and second bundle conveyance rollers configured to convey the sheet to the processing tray from the sheet overlap unit, and a sheet processing apparatus control unit configured to control an overlap operation in the sheet overlap unit, wherein the sheet processing apparatus control unit determines, based on sheet information relating to the sheet fed to the sheet overlap unit, whether a sheet to be then fed is overlaid on the sheet fed to the sheet overlap unit. | 11-24-2011 |
20120146280 | SHEET CONVEYING APPARATUS, SHEET PROCESSING APPARATUS, AND IMAGE FORMING APPARATUS - To convey a following sheet toward a discharge tray together with a preceding sheet made to wait in a buffer path, while a switch member provided at a branch portion of the path is maintained at a lower position, the following sheet conveyed from an upstream side of the branch portion toward the discharge tray is guided by a second guide face of the switch member at the lower position, made to meet the waiting sheet on a downstream side of the switch member, and conveyed toward the discharge tray in a sheet bundle. | 06-14-2012 |
20120275839 | SHEET STORAGE DEVICE AND IMAGE FORMING APPARATUS - A sheet storage device and an image forming apparatus capable of increasing extractability and visibility are provided. A plurality of trays | 11-01-2012 |
20120288310 | SHEET STORAGE APPARATUS AND IMAGE FORMING APPARATUS - This invention regards to a sheet storage apparatus. A forward and reversely rotatable conveying roller | 11-15-2012 |
20120313311 | SHEET PROCESSING APPARATUS AND IMAGE FORMING APPARATUS INCLUDING SAME - A sheet processing apparatus capable of improving sheet processing performance and productivity is provided. While sheets are conveyed in a piled state toward a rear-end stopper, displacement is produced between the sheets by a pair of discharge rollers. Even if adhesion occurs between the sheets during conveyance thereof, the adhesion between the sheets can be removed before the sheets come into contact with the rear-end stopper. | 12-13-2012 |
20120313313 | SHEET STORAGE APPARATUS AND IMAGE FORMING APPARATUS - A sheet storage apparatus having a sheet conveying portion and a sheet storage portion to receive the sheet as conveyed upward from below by the sheet conveying portion and to store the sheet in a vertical direction. The sheet storage portion includes a guide portion, first and second holding members. The first holding member forms a first nipping portion between the first holding member and the guide surface. The first holding member permits the sheet to be conveyed upward to pass through the first nipping portion, and holds the sheet by restricting the sheet from moving downward at the first nipping portion. The second holding member forms a second nipping portion between the second holding member and the guide surface. The second holding member permits the sheet to be conveyed upward to pass through the second nipping portion, and holds the sheet at the second nipping portion. | 12-13-2012 |
20120319346 | SHEET STORAGE DEVICE AND IMAGE FORMING APPARATUS - This invention provides a sheet storage device, which can enhance sheet taking-out property in taking out of a sheet from a sorting device and sheet visibility. A sheet storage device | 12-20-2012 |
20120326379 | SHEET STACKING APPARATUS AND IMAGE FORMING APPARATUS - A sheet stacking apparatus includes an endless belt member onto which sheets are stacked and which moves rotationally to convey the sheets; a plurality of holding members that is provided on the belt member and that holds the sheets down to a sheet stacking surface of the belt member to nip the sheets; and sheet detecting portions which detect presence or absence of sheets between the holding members and the sheet stacking surface of the belt member, the sheet detecting portions each include a light emitting portion that emits light and a light receiving portion that receives the light, and the light emitting portions and the light receiving portions are fixedly provided below the sheet stacking surface of the belt member so that the light emitting portions and the light receiving portions detect presence or absence of a sheet at times when facing the holding members. | 12-27-2012 |
20130026703 | SHEET STACKING APPARATUS AND IMAGE FORMING APPARATUS - A finisher | 01-31-2013 |
20130026707 | SHEET STACKING APPARATUS AND IMAGE FORMING APPARATUS - There are provided a sheet stacking apparatus capable of stably stacking a large number of sheets and an image forming apparatus. The sheet stacking apparatus configured to stack sheets includes a plurality of discharge units disposed to an apparatus main body in a vertical direction and configured to discharge sheets, a plurality of sheet stacking units disposed to be independently elevatable on a side surface of the apparatus main body corresponding respectively to the plurality of discharge units and configured to stack thereon the sheets discharged from the discharge units, and an alignment unit disposed between the plurality of sheet stacking units and configured to sequentially align a position in a width direction perpendicular to a discharging direction of the sheets stacked on a lower sheet stacking unit among the plurality of sheet stacking units. | 01-31-2013 |
20130249166 | SHEET CONVEYANCE APPARATUS AND IMAGE FORMING SYSTEM - A sheet conveyance apparatus includes a shift unit which includes a conveyance roller pair capable of being placed in a contact state and a separation state and configured to convey sheets having an overlapping portion where a rear end portion of a preceding sheet and a front end portion of a following sheet overlap each other. The shift unit is movable in a widthwise direction while conveying the sheets by the conveyance roller pair. The sheet conveyance apparatus moves the shift unit in the widthwise direction when it is determined that the overlapping portion of the sheets has reached the conveyance roller pair. | 09-26-2013 |
20140015188 | SHEET PROCESSING APPARATUS AND IMAGE FORMING APPARATUS - A sheet processing apparatus includes a projection forming unit configured to form a projection on a sheet. The projection is formed in the vicinity of a binding portion of a sheet bundle. When a succeeding sheet bundle is discharged on the sheet bundle in which the projection has been formed on a top surface thereof, the succeeding sheet bundle is stacked by moving on the already stacked sheet bundle without being caught by the binding portion of the already stacked sheet bundle as an end of the succeeding sheet bundle is guided by the projection. | 01-16-2014 |
20140054854 | SHEET PROCESSING APPARATUS AND IMAGE FORMING APPARATUS - In a conveying belt that is entrained about a pair of bundle discharge rollers along a stacking wall, on which an end part of a sheet stacked on a stack tray abuts, between the stack tray and an intermediate processing tray, a position of an outer peripheral surface is displaced such that a projection amount of the conveying belt from the stacking wall is large when the pair of discharge rollers discharges the sheet to the stacking portion, and such that the projection amount is small when the pair of discharge rollers moves the sheet toward a stopper of the intermediate stacking portion. | 02-27-2014 |
20150042037 | SHEET STACKING DEVICE, SHEET FEEDING DEVICE AND IMAGE FORMING APPARATUS - A sheet stacking device includes a base member and a sheet stacking portion on which a sheet is stacked. The sheet stacking portion is supported by the base member swingably in a first direction orthogonal to a second direction, and swings and changes an inclination angle for holding the stacked sheet. | 02-12-2015 |