Patent application number | Description | Published |
20110278783 | SHEET PROCESSING APPARATUS AND IMAGE FORMING APPARATUS - A sheet processing apparatus to perform stapling includes a sheet stacking portion receiving a sheet for a sheet bundle and a positioning member against which an end of the sheet is abutted to position the sheet bundle. The positioning member is movable to adjust a stapling position on the sheet bundle where a staple processing portion performs a stapling process. After the stapling process is performed, a fold processing portion folds the sheet bundle in two. One of two surfaces of the folded sheet bundle slides on a conveyance guide member while a conveyance guide member guides the folded sheet bundle. The stapling process is performed while the stapling position is previously moved, by a predetermined distance, to an opposite area side of the sheet bundle opposite to an area that becomes the one of two surfaces of the folded sheet bundle when the sheet bundle is folded in two. | 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 |
20120093555 | SHEET-DISCHARGE APPARATUS, SHEET PROCESSING APPARATUS, AND IMAGE FORMING APPARATUS - The sheet processing apparatus includes a sheet-discharge fan that blows air downward of a sheet-discharged by an upper sheet-discharge roller, and a control portion configured to control an air velocity of air blown from the sheet-discharge fan according to a basic weight of the sheet. In the case where the basic weight of the sheet is a predetermined value or less, the control portion increases the air velocity of the sheet-discharge fan according to the basic weight of the sheet based on basic weight information from an input portion for inputting the basic weight information of the sheet. The control portion also controls the air velocity of the sheet-discharge fan to be a velocity at which the sheet whose rear edge contacts the sheet-stacking wall does not move in a sheet-discharge direction in the case where the basic weight of the sheet exceeds the predetermined value. | 04-19-2012 |
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 |
20130216332 | SHEET PROCESSING APPARATUS AND IMAGE FORMING APPARATUS - A sheet processing apparatus includes a positioning member, a bending conveyance path, and a sheet stacking, a staple processing, a fold processing, an end part processing, and a controlling portion. The staple processing portion performs a stapling process to sheets stacked on the sheet stacking portion at a stapling position. After the stapling process, the fold processing portion folds the sheet bundle to create a folded end part between a first and second surface. The positioning member is movable. The bending conveyance path guides the folded sheet bundle in a curved manner while the first surface slides against the conveyance guide member. The end part processing portion performs a process to the folded end part. The controlling portion controls so that the stapling position is located at a predetermined distance from the folding position in an area on the sheet bundle that will become the second surface. | 08-22-2013 |
20130341856 | SHEET STACKING APPARATUS AND SHEET PROCESSING APPARATUS AS WELL AS IMAGE FORMING APPARATUS - Disclosed is a sheet processing apparatus including an intermediate processing tray on which a sheet conveyed by a discharge roller is stacked, a proximal aligning plate and a distal aligning plate moving in a sheet width direction for aligning the sheet conveyed onto the intermediate processing tray, and a finisher controller for moving and controlling the proximal aligning plate and the distal aligning plate to align, when a sheet having a length in the sheet conveyance direction shorter than a predetermined length in the sheet conveyance direction is conveyed, the sheet at a position shifted nearer to a take-out port side A in the sheet width direction than a position in the sheet width direction at which a sheet having a length in the sheet conveyance direction equal to or more than the predetermined length in the sheet conveyance direction is aligned. | 12-26-2013 |
20140003852 | IMAGE FORMING SYSTEM | 01-02-2014 |
20140077437 | SHEET PROCESSING APPARATUS AND IMAGE FORMING APPARATUS - A sheet processing apparatus in which a sheet bundle including a plurality of sheets discharged onto an intermediate processing tray is received in a receiving portion of a stapler and bound with use of a staple, and a sheet bundle including a plurality of sheets discharged onto the intermediate processing tray is received in a receiving portion of a staple-less binding unit having a gap in the thickness direction of the sheets smaller than that of the receiving portion of the stapler and bound without using a staple, wherein when the stapler performs the binding process, the staple-less binding unit is arranged in a position shifted in a width direction orthogonal to a sheet discharge direction from a region on the intermediate processing tray, through which the sheets discharged by a sheet discharging portion pass. | 03-20-2014 |
20140161565 | SHEET PROCESSING APPARATUS AND IMAGE FORMING APPARATUS - A staple-less binding unit including a pair of upper and lower teeth binds a sheet bundle which is discharged to an intermediate processing tray by a sheet discharge portion and whose one edge abuts against a rear edge stopper. A control portion switches a binding mode of the staple-less binding unit that implements the binding process on the sheet bundle in a first binding mode of binding the sheet bundle without any staple such that the pair of upper and lower teeth bite across an edge of the sheet bundle and in a second binding mode of binding the sheet bundle without any staple such that the pair of upper and lower teeth do not bite across any edge of the sheet bundle. | 06-12-2014 |
20140339754 | SHEET PROCESSING APPARATUS AND IMAGE FORMING APPARATUS - A sheet processing apparatus includes: a binding unit that sandwiches and binds a plurality of sheets by using a convex portion and a concave portion; a moving unit that moves at least one of the convex portion and the concave portion; a drive unit that drives the moving unit; and a control unit that controls the drive unit so that a state in which the binding unit sandwiches the plurality of sheets at a predetermined pressing force by using a driving force from the drive unit is retained for a predetermined time period, and so that the one of the convex portion and the concave portion is moved in a direction away from the another of the convex portion and the concave portion after the predetermined time period has elapsed. | 11-20-2014 |