Abstract: A toner image is formed on a sheet based on image data by an image forming portion, and a plurality of sheets on which the toner image is formed is bound together by a stapleless binding unit including a pair of tooth-like members, each having a concave and convex portion. Then, the image data is corrected by a correction portion so that a ratio of toner within a part of the sheet to be subjected to binding processing by the stapleless binding unit is equal to or smaller than a predetermined value.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: 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 basis weight of the sheet. In the case where the basis 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 basis weight of the sheet based on basis weight information from an input portion for inputting the basis 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 basis weight of the sheet exceeds the predetermined value.

Abstract: 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.

Abstract: The purpose of the present invention is to provide a sheet bundle binding processing apparatus capable of performing a binding process on a sheet bundle inserted to a manual setting portion of an apparatus housing and a binding process on a sheet bundle introduced to a processing tray with a common stapling unit having a simple unit moving mechanism therefor as well as facilitating staple replenishment. The present invention comprises a sheet bundle binding processing apparatus including a processing tray on which sheets are stacked, a binding device which staple-binds a sheet bundle stacked on the processing tray, and a manual setting portion to which a sheet bundle is set from the outside of the apparatus, the binding device being arranged to be movable among a first position where a sheet bundle stacked on the processing tray is to be bound, a second position where a sheet bundle set at the manual setting portion is to be bound, and a third position where staples are replenished to the binding device.

Abstract: The purpose of the present invention is to provide a sheet bundle binding processing apparatus capable of performing a binding process on a sheet bundle set at a manual setting portion and a sheet bundle set on a processing tray, respectively, with a simple structure at low cost. The present invention comprises a sheet bundle binding processing apparatus including an external casing, a manual setting portion which is integrally formed with the external casing and to which a sheet bundle is inserted, a binding device which performs a staple-binding process on the sheet bundle inserted to the manual setting portion as being movable between a binding position where the sheet bundle of the manual setting portion is bound and a staple replenishment position where staples are replenished, and an open-close cover which is arranged at the external casing at a position being different from the manual setting portion.

Abstract: The purpose of the present invention is to provide a sheet bundle binding processing apparatus which can be structured small and compact while a setting portion for manually setting a sheet bundle from the outside is arranged at an external casing. The present invention comprises a sheet bundle binding processing apparatus including a manual setting portion to which a sheet bundle is inserted, a binding device which binds a sheet bundle inserted to the manual setting portion, a first driving portion, and a second driving portion; the first driving portion and the second driving portion being arranged respectively at the upper side and the lower side as sandwiching the manual setting portion.

Abstract: The purpose of the present invention is to provide a post-processing apparatus capable of performing conveying to and storing at a predetermined stack tray without causing sheet jamming even when a sheet having larger size than a standard size is introduced. The present invention comprises a post-processing apparatus as a processing tray on which sheets conveyed in a predetermined conveyance direction are stacked into a bundle shape, an aligning device which aligns the sheets conveyed to the processing tray, a binding device which performs a binding process on the sheets aligned by the aligning device, and a controller which controls the aligning device so that a sheet is aligned at a position being apart from the binding device by a predetermined distance when the sheet conveyed to the processing tray has a predetermined size or larger.

Abstract: The purpose of the present invention is to provide a sheet bundle binding processing apparatus capable of performing a binding process rapidly and efficiently while the binding process can be selected by an operator. The present invention comprises a sheet bundle binding processing apparatus including a processing tray on which sheets are stacked, an insertion portion to which a sheet bundle is inserted, a first binding device which performs a predetermined binding process on a sheet bundle stacked on the processing tray and the predetermined binding process on a sheet bundle inserted to the insertion portion, and a second binding device which performs a binding process being different from the predetermined binding process on a sheet bundle stacked on the processing tray.

Abstract: 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.

Abstract: 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.

Abstract: A stacker includes a plurality of sheet stacking units individually movable upward and downward. Sheets are selectively stacked onto either of the stacker trays. To remove the sheets stacked on one of the stacker trays, a door is opened. In a state where the door is open, the stacker trays moved by respective elevation units are movable only downward. In this manner, accidental upward movement of each of the stacker trays caused by a malfunction of a motor or the like is regulated, whereby damage to the stacker is prevented.

Abstract: 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.

Abstract: 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.

Abstract: A toner image is formed on a sheet based on image data by an image forming portion, and a plurality of sheets on which the toner image is formed is bound together by a stapleless binding unit including a pair of tooth-like members, each having a concave and convex portion. Then, the image data is corrected by a correction portion so that a ratio of toner within a part of the sheet to be subjected to binding processing by the stapleless binding unit is equal to or smaller than a predetermined value.

Abstract: 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.

Abstract: 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.

Abstract: 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.