Patent application number | Description | Published |
20080202301 | SHEET PROCESSING APPARATUS AND IMAGE FORMING APPARATUS - A sheet processing apparatus, by which a failure in control does not occur even if cutting wastes are conveyed by a conveying unit and an image forming apparatus having the sheet processing apparatus are provided. The sheet processing apparatus has a cutter unit for cutting a sheet, a dust box for accommodating the cutting wastes, a conveying belt pair which conveys the cut sheet, sensors for detecting the sheet conveyed by the conveying belt pair, and a controller for controlling conveyance of the sheet based on the signals detected by the sensors, wherein when the length of the sheet detected by the sensor is equal to or less than a predetermined amount, the controller does not determine the sheet as a sheet. | 08-28-2008 |
20080202302 | SHEET CUTTING APPARATUS AND IMAGE FORMING APPARATUS - A sheet cutting apparatus comprising: a movable blade which lowers toward a sheet from above to cut the sheet; and a pushing member located upstream from a tip end of the movable blade in a lowering direction, and having a pushing surface which lowers together with the movable blade to push a cut piece of the sheet cut by the movable blade. | 08-28-2008 |
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 |
20090121420 | SHEET PROCESSING APPARATUS AND IMAGE FORMING APPARATUS - A saddle stitching portion which can bind the center portion in the conveying direction of a sheet bundle by a stapler and fold it by a pair of folding rollers and a pushout member, includes an end stopper which receives the downstream end of a sheet conveyed by a first conveying roller in a first receiving position on the downstream of the first conveying roller by a length not buckling the sheet on the downstream of the stapler or the downstream end of the sheet conveyed by a second conveying roller in a second receiving position on the downstream of the second conveying roller by the length on the further downstream, wherein the receiving position of the downstream end stopper is selected according to the length in the conveying direction of the sheet. | 05-14-2009 |
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 |
20090256301 | SHEET PROCESSING APPARATUS AND IMAGE FORMING APPARATUS - Provided is a sheet folding apparatus for folding a sheet stack, including a sheet stack support member for supporting a sheet stack by being abutted against a lower edge of the sheet stack, an abutting member for folding the sheet stack by making the sheet stack supported by the sheet stack support member abutted against a leading edge of the abutting member, and paired folding rollers for sandwiching the sheet stack folded by the abutting member to fold the sheet stack at a fold position, in which a position where the sheet stack is abutted against the leading edge of the abutting member with respect to the fold position is varied based on sheet stack information. | 10-15-2009 |
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 |
20090309300 | SHEET-STACKING APPARATUS AND IMAGE-FORMING APPARATUS - A sheet-stacking apparatus includes a gripper configured to convey a sheet, two stacker trays stacking sheets arranged in a row, and a support member configured to separately elevate the two stacker trays. The stacker tray is selected according to a sheet length. | 12-17-2009 |
20100007071 | SHEET PROCESSING APPARATUS AND IMAGE FORMING APPARATUS - A sheet processing apparatus that can process a folded sheet bundle, comprising: deforming processing means configured to perform deforming processing by deforming a folded spinal portion of the folded sheet bundle to form a substantially flat portion along the folded spinal portion; and cutting means configured to cut an edge portion, opposite to the folded spinal portion, of the folded sheet bundle, wherein the distance from the folded spinal portion of a folded sheet bundle to a position to be cut by the cutting means is shorter for a folded sheet bundle A having a particular thickness and having been subjected to the deforming processing than the distance from the folded spinal portion of the folded sheet bundle to a position to be cut by the cutting means for a folded sheet bundle B not subjected to the deforming processing but having the same thickness as folded sheet bundle A. | 01-14-2010 |
20100008709 | SHEET PROCESSING APPARATUS AND IMAGE FORMING APPARATUS - A sheet processing apparatus that performs bookbinding processing on a folded sheet bundle, includes a holding portion configured to hold a folded sheet bundle, and a pressing member configured to press a folded spinal portion of the sheet bundle held by the holding portion. At least one of the holding portion and the pressing member can move in a direction to approach each other along a surface of the sheet held by the holding portion to press the folded spinal portion of the sheet bundle. | 01-14-2010 |
20100066013 | SHEET STACKING APPARATUS, SHEET PROCESSING APPARATUS AND IMAGE FORMING APPARATUS - A recording material stacking apparatus equipped with a plurality of discharge ports and a plurality of stacking trays can be set to normal mode and large capacity stacking mode each having a different maximum loading capacity. A stacking tray on the upper side has a plurality of lower limit positions and uses a lower limit position located on the upper side when normal mode is selected. On the other hand, it uses a lower limit position located on the lower side when the large capacity stacking mode is selected. The lower limit position located below a stacking tray on the upper side when this large capacity stacking mode is selected exists at a position in which it blocks a lower discharge port of sheets. Selection of the large capacity stacking mode and normal mode is executed according to a result of computation from data input through an input portion. | 03-18-2010 |
20100230886 | SHEET PROCESSING APPARATUS AND IMAGE FORMING APPARATUS EQUIPPED WITH THE SAME - A folded spine of a booklet held by a pair of opposing holding members is deformed by entering a pressing member into a gap between the pair of holding members and bringing the pressing member into pressure contact with the folded spine. In consequence, the folded spine is prevented from receiving an excessive pressing force, and a smooth surface with a width substantially equal to the thickness of the booklet is thus formed on the folded spine, whereby a booklet with a good appearance can be made. | 09-16-2010 |
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 |
20100329755 | SHEET PUNCHING DEVICE AND IMAGE FORMING APPARATUS HAVING SHEET PUNCHING DEVICE - A sheet punching device includes a first blade, a first die into which the first blade is fitted from a first surface of a sheet to form a punch hole in the sheet, a second blade, and a second die into which the second blade is fitted. The second blade is inserted into the punch hole formed by the first blade from a second surface of the sheet and fitted into the second die. | 12-30-2010 |
20100329768 | CUTTING APPARATUS AND IMAGE FORMING APPARATUS - A cutting apparatus configured to cut a sheet or a sheet bundle includes a cutting blade whose blade surface has a plurality of grooves. In the cutting apparatus, a scraping member enters the grooves provided on the blade surface to scrape off cutting scraps remaining after a cutting operation. Accordingly, the cutting apparatus can scrape off cutting scraps from the cutting blade even if the adhesive force of the cutting scraps is great. | 12-30-2010 |
20110081183 | SHEET PROCESSING APPARATUS AND IMAGE FORMING SYSTEM - A sheet processing apparatus includes a holding portion that nips and holds a booklet, which includes folded sheets, by a pair of holding members opposite to each other, and a pressing portion that enters a gap between the pair of holding members to press a spine of the booklet held by the holding portion while moving along the spine of the booklet so as to deform the spine of the booklet, wherein the pressing portion changes its moving direction along the spine of the booklet and changes the pressing position thereof in the thickness direction of the booklet held between the pair of holding members, when the pressing portion deforms the spine of the booklet. | 04-07-2011 |
20110081184 | SHEET PROCESSING APPARATUS, IMAGE FORMING APPARATUS, AND IMAGE FORMING SYSTEM - A sheet processing apparatus includes a holding portion that nips and holds a booklet, which includes folded sheets, by a pair of holding members opposite to each other; and a pressing portion that enters a gap between the pair of holding members, wherein the pressing portion presses the spine of the held booklet so as to deform the spine of the booklet; wherein the pressing portion has plurality of pressing members, each having a different thickness in the thickness direction of the booklet, and the pressing member capable of entering the gap between the pair of holding members, and having the thickness closest to the thickness of the booklet which is nipped and held by the pair of holding members is selected among the plurality of pressing members so as to perform the deforming process. | 04-07-2011 |
20110081186 | SHEET PROCESSING APPARATUS AND IMAGE FORMING SYSTEM - A sheet processing apparatus includes a holding portion that holds a booklet, which includes folded sheets, by a pair of holding members, a pressing portion having a first pressing member, which is brought into contact with a spine of a booklet held by the holding portion so as to perform a deforming process to the spine, and a second pressing member having a thickness, in the thickness direction of the booklet, greater than that of the first pressing member, a moving portion that moves the pressing member along the spine, and a controlling portion that changes the first pressing member to the second pressing member, and increases a deformation amount from the spine before the deformation to a pressing position in the pressing direction where the second pressing member presses the spine, when the thickness of the booklet held by the holding portion exceeds a predetermined thickness. | 04-07-2011 |
20110140337 | SHEET PROCESSING APPARATUS AND IMAGE FORMING APPARATUS - A saddle stitching portion which can bind the center portion in the conveying direction of a sheet bundle by a stapler and fold it by a pair of folding rollers and a pushout member, includes an end stopper which receives the downstream end of a sheet conveyed by a first conveying roller in a first receiving position on the downstream of the first conveying roller by a length not buckling the sheet on the downstream of the stapler or the downstream end of the sheet conveyed by a second conveying roller in a second receiving position on the downstream of the second conveying roller by the length on the further downstream, wherein the receiving position of the downstream end stopper is selected according to the length in the conveying direction of the sheet. | 06-16-2011 |
20110140348 | SHEET POST-PROCESSING APPARATUS AND IMAGE FORMING APPARATUS - A sheet post-processing apparatus includes a discharge portion configured to discharge a sheet having a folding portion, a conveyance portion configured to abut on a lower surface of the sheet discharged by the discharge portion, to convey the sheet downstream in a sheet conveyance direction of the discharge portion, a pressing portion arranged at a position opposing the conveyance portion, configured to press an upper surface of the sheet discharged by the discharge portion, and a moving portion configured to move the pressing portion in the sheet conveyance direction of the conveyance portion, in which the moving portion moves the pressing portion upstream in the sheet conveyance direction of the conveyance portion, to move the pressing portion from a position where the sheet discharged by the discharge portion is not pressed to a position where the sheet discharged by the discharge portion is pressed. | 06-16-2011 |
20120001385 | SHEET STACKING APPARATUS AND IMAGE FORMING APPARATUS - An image forming apparatus has a sheet stacking apparatus including a tray on which sheets are stacked, and an aligning member aligning the sheets stacked on the tray. The aligning member aligns sheets stacked, on a sheet previously stacked on the tray, with a displacement in an aligning direction of the aligning member with respect to the sheet previously stacked. An aligning operation of the aligning member is changed on the basis of whether or not the number of the sheets stacked on the sheets previously stacked is a predetermined number or less. | 01-05-2012 |
20120013069 | SHEET STACKING APPARATUS AND IMAGE FORMING APPARATUS - A sheet stacking apparatus includes a gripper configured to discharge a sheet, a plurality of stacker trays arranged in a row and configured to stack the discharged sheet, and a guiding unit configured to guide the discharged sheet to a predetermined position. The plurality of stacking trays are horizontally arranged so that a large number of sheets can be stacked without increasing the size of the sheet stacking apparatus. | 01-19-2012 |
20120091655 | SHEET CONVEYING APPARATUS - A sheet conveying apparatus has a first pair of rollers which nip and convey a sheet; a second pair of rollers provided on a downstream side of the first pair of rollers in a conveying direction of the sheet, which nip and convey a sheet; and a position detecting sensor which detects a position of a sheet in a width direction which is perpendicular to the conveying direction. When the first pair of rollers and the second pair of rollers nip and convey the sheet, the first pair of rollers and the second pair of rollers are simultaneously moved according to a position detected by the position detecting sensor in the same direction of the width direction which is perpendicular to the conveying direction. | 04-19-2012 |
20120292850 | SHEET STACKING APPARATUS AND IMAGE FORMING APPARATUS - A sheet stacking apparatus includes a conveyance portion, a first sheet stacking portion, a second sheet stacking portion, and a controller. The conveyance portion includes a holding portion that moves while holding a downstream end of a sheet. The first and second sheet stacking portions include stacking surfaces and the second sheet stacking portion is arranged downstream of the first sheet stacking portion. The controller controls to cause the holding portion to convey to the second sheet stacking portion. When the sheet to be stacked on the second sheet stacking portion passes over the first sheet stacking portion, an upstream end of the sheet in the sheet conveying direction is guided along the first sheet stacking portion stacking surface, on which a sheet is not stacked, while the downstream end of the sheet is held by the holding portion. | 11-22-2012 |
20120321414 | SHEET PROCESSING APPARATUS AND IMAGE FORMING APPARATUS EQUIPPED WITH THE SAME - A folded spine of a booklet held by a pair of opposing holding members is deformed by entering a pressing member into a gap between the pair of holding members and bringing the pressing member into pressure contact with the folded spine. In consequence, the folded spine is prevented from receiving an excessive pressing force, and a smooth surface with a width substantially equal to the thickness of the booklet is thus formed on the folded spine, whereby a booklet with a good appearance can be made. | 12-20-2012 |
20130116101 | SHEET POST-PROCESSING APPARATUS AND IMAGE FORMING APPARATUS - A sheet post-processing apparatus includes a discharge portion configured to discharge a sheet having a folding portion, a conveyance portion configured to abut on a lower surface of the sheet discharged by the discharge portion, to convey the sheet downstream in a sheet conveyance direction of the discharge portion, a pressing portion arranged at a position opposing the conveyance portion, configured to press an upper surface of the sheet discharged by the discharge portion, and a moving portion configured to move the pressing portion in the sheet conveyance direction of the conveyance portion, in which the moving portion moves the pressing portion upstream in the sheet conveyance direction of the conveyance portion, to move the pressing portion from a position where the sheet discharged by the discharge portion is not pressed to a position where the sheet discharged by the discharge portion is pressed. | 05-09-2013 |
20130156477 | SHEET PUNCHING DEVICE AND IMAGE FORMING APPARATUS HAVING SHEET PUNCHING DEVICE - A sheet punching device comprises a first blade, a first die into which the first blade is fitted from a first surface of a sheet to form a punch hole in the sheet, a second blade, and a second die into which the second blade is fitted. The second blade is inserted into the punch hole formed by the first blade from a second surface of the sheet and fitted into the second die. | 06-20-2013 |
20130308963 | SHEET PROCESSING APPARATUS AND IMAGE FORMING APPARATUS - A sheet processing apparatus, by which a failure in control does not occur even if cutting wastes are conveyed by a conveying unit and an image forming apparatus having the sheet processing apparatus are provided. The sheet processing apparatus has a cutter unit for cutting a sheet, a dust box for accommodating the cutting wastes, a conveying belt pair which conveys the cut sheet, sensors for detecting the sheet conveyed by the conveying belt pair, and a controller for controlling conveyance of the sheet based on the signals detected by the sensors, wherein when the length of the sheet detected by the sensor is equal to or less than a predetermined amount, the controller does not determine the sheet as a sheet. | 11-21-2013 |