Abstract: A sheet processing apparatus of an embodiment includes a spring member which supports a support leg provided on an end bottom of a finishing apparatus at a side of an image forming apparatus and is extendable in a height direction, a sheet feed port which is formed in the finishing apparatus to be opposite to a sheet discharge port of the image forming apparatus and has a width wider than a width of the sheet discharge port in the height direction, sheet discharge guides which are arranged to be opposite to each other at an exit of the sheet discharge port and sandwich a conveyance path of the sheet in the image forming apparatus, sheet feed guides which are arranged to be opposite to each other at an inlet of the sheet feed port and sandwich a conveyance path of the sheet in the finishing apparatus, electromagnets provided at ends of the sheet feed guides at a side of the sheet feed port, and magnetic members which are rotatably provided to ends of the sheet discharge guides at a side of the sheet discharge

Abstract: A sheet loader for loading a folded sheet bundle provided from a sheet bundle provider with a folded edge of the folded sheet bundle in the lead, including: an undersurface support configured to support an undersurface of the folded sheet bundle so that the folded edge is lower than a trailing edge of the folded sheet bundle; a folded edge blocker configured to support the folded edge of the folded sheet bundle supported by the undersurface support, a lower end of the folded edge blocker being held by the undersurface support, and a canceller configured to release the lower end of the folded edge blocker from the undersurface support if a predetermined amount of sheet stacks are loaded on the undersurface support.

Abstract: When a sheet is conveyed from a processing tray to a stacking tray, a bar-like pushing member is moved in a direction of the stacking tray in synchronization with an ejector. Consequently, simultaneously with the movement of the sheet by the ejector, a lower surface of a leading end of the sheet is pushed to relax and reduce a contact force between the lower surface of the leading end of the sheet and the stacking tray (or an upper surface of a sheet already stacked on the stacking tray). As a result, static friction at the leading end of the sheet is changed to dynamic friction and the entire sheet is conveyed to the stacking tray without bending.

Abstract: A sheet post-processing apparatus of the present invention has, above a processing tray, a standby tray for making a sheet stand by. The sheet on the standby tray is dropped and supplied onto the processing tray, so that a sheet feeding path between the standby tray and processing tray can be shortened. In the case where there exists no sheet on the sheet discharge tray when a sheet bundle is discharged onto the sheet discharge tray, one sheet is previously discharged onto the sheet discharge tray. Thus, by discharging the sheet bundle in a state where there is the one sheet on the sheet discharge tray, the sheet vertical alignment in the case where the sheet bundle is discharged onto the sheet discharge tray can be enhanced.

Abstract: A sheet post-processing apparatus discharges and conveys a sheet from a process tray to a storage tray, and decelerates a bundle hook and a paper discharge roller when the bundle hook reaches a discharge start position of a bundle of sheets. At this time, a tangential speed of the paper discharge roller is faster than a movement speed of the bundle hook. Subsequently, the sheet post-processing apparatus stops the paper discharge roller in accordance with a rotation position of the bundle hook, and then decelerates the movement speed of the bundle hook. After the sheets are stacked on the storage tray, the bundle hook accelerates to return to a home position. Additionally, the sheet post-processing apparatus includes a spool 17 having a sheet pressing guide member 16 with a bent portion 16A.

Abstract: A post-processing method involves using a standby tray to receive a paper sheet to be supplied from a digital copier, a processing tray to receive a paper sheet dropped from a standby tray, a feed member which guides the rear end of a paper sheet received in a standby tray in the feeding direction to a processing tray, and scrapes and sends the rear end of a paper sheet dropped onto a processing tray to a stopper, a press member which clamps the rear end of a paper sheet received in a standby tray by cooperating with two feed members, and a stapler to staple the aligned rear ends of paper sheets. When a first paper sheet is supplied to the standby tray, the press member presses the rear end of the first paper sheet, to receive a second paper.

Abstract: A sheet post-process apparatus includes a waiting tray and a processing tray. The waiting tray is provided in the middle of a conveying path and makes standby sheets in the case where a post-process is required. The processing tray has a function which causes the sheets made standby on the waiting sheet to be dropped by self-weight. With this function, the processing tray receives the sheets moved to be dropped and the sheets conveyed from the conveying path without intervening the waiting tray, before carrying out the post-process. Sheet bundles formed on the processing tray are stacked on a storage tray by a sheet conveying mechanism after they have been post-processed.

Abstract: A sheet post-processing apparatus of the present invention comprises: a sheet discharge section that feeds a sheet supplied from an image forming apparatus to a post-processing section and leads the sheet that has passed through the post-processing section to a sheet discharge port; a sheet discharge tray that receives a sheet discharged from the sheet discharge port and can move to a first standby position and a second standby position higher than the first standby position and nearer to the sheet discharge port; and a controller that controls the height position of the sheet discharge tray by identifying the type of the sheet. The controller changes the height position of the sheet discharge tray to allow the sheet discharge tray to receive the discharged sheet at the first standby position in the case where the sheet is a first type while to receive the discharged sheet at the second standby position in the case where the sheet is a second type.

Abstract: A sheet loader for loading a folded sheet bundle provided from a sheet bundle provider with a folded edge of the folded sheet bundle in a lead, including: an undersurface support configured to support an undersurface of the folded sheet bundle provided from the sheet bundle provider; a folded edge blocker configured to take a blocking position to block the folded edge of the folded sheet bundle on the undersurface support and a releasing position to release the folded sheet bundle; and a joint configured to evacuate from an orbit of the folded edge blocker returning from the releasing position to the blocking position, the joint is configured to join the undersurface support with the folded edge blocker at the blocking position after the returning to the blocking position.

Abstract: A sheet finishing apparatus includes a cutter unit which is disposed on a conveyance path of a sheet, and forms a cut for tag formation in the sheet from a starting point close to a center line of the sheet orthogonal to a conveyance direction, a folding unit which is disposed downstream of the cutter unit on the conveyance path, bends the sheet around the center line, and raises an area defined by the cut in the sheet by the bending to form the tag.

Abstract: A sheet post-processing apparatus discharges and conveys a sheet from a process tray to a storage tray, and decelerates a bundle hook and a paper discharge roller when the bundle hook reaches a discharge start position of a bundle of sheets. At this time, a tangential speed of the paper discharge roller is faster than a movement speed of the bundle hook. Subsequently, the sheet post-processing apparatus stops the paper discharge roller in accordance with a rotation position of the bundle hook, and then decelerates the movement speed of the bundle hook. After the sheets are stacked on the storage tray, the bundle hook accelerates to return to a home position. Additionally, the sheet post-processing apparatus includes a spool 17 having a sheet pressing guide member 16 with a bent portion 16A.

Abstract: A sheet post-processing apparatus of the present invention has, above a processing tray, a standby tray for making a sheet stand by. The sheet on the standby tray is dropped and supplied onto the processing tray, so that a sheet feeding path between the standby tray and processing tray can be shortened. In the case where there exists no sheet on the sheet discharge tray when a sheet bundle is discharged onto the sheet discharge tray, one sheet is previously discharged onto the sheet discharge tray. Thus, by discharging the sheet bundle in a state where there is the one sheet on the sheet discharge tray, the sheet vertical alignment in the case where the sheet bundle is discharged onto the sheet discharge tray can be enhanced.

Abstract: A post-processing apparatus has a standby tray to receive a paper sheet to be supplied from a digital copier, a processing tray to receive a paper sheet dropped from a standby tray, a feed member which guides the rear end of a paper sheet received in a standby tray in the feeding direction to a processing tray, and scrapes and sends the rear end of a paper sheet dropped onto a processing tray to a stopper, a press member which clamps the rear end of a paper sheet received in a standby tray by cooperating with two feed members, and a stapler to staple the aligned rear ends of paper sheets. When a first paper sheet is supplied to the standby tray, the press member presses the rear end of the first paper sheet, to receive a second paper.

Abstract: A sheet loading apparatus has an ejecting member to eject a sheet; a loading member to load the sheet ejected by the ejecting member; and a movable member capable of moving in a state keeping contact with ejecting member side ends of the sheets loaded on the loading member. The movable member moves a distance equal to a moving distance of the loading member in the moving direction of the loading member. The sheet loading apparatus has a screen which is located between the loading member and the ejecting member and moves up and down, while waits at a position capable of avoiding interruption to the ejection of the sheet; and a first rotating member mounted to the screen in a location above the loading member and suspending the movable member.

Abstract: A sheet post-process apparatus includes a waiting tray and a processing tray. The waiting tray is provided in the middle of a conveying path and makes standby sheets in the case where a post-process is required. The processing tray has a function which causes the sheets made standby on the waiting sheet to be dropped by self-weight. With this function, the processing tray receives the sheets moved to be dropped and the sheets conveyed from the conveying path without intervening the waiting tray, before carrying out the post-process. Sheet bundles formed on the processing tray are stacked on a storage tray by a sheet conveying mechanism after they have been post-processed.

Abstract: In a sheet processing apparatus that performs processing for sheets after image formation such as sorting or stapling of the sheets, when the sheets are subjected to processing in a processing tray, after the sheets are discharged to the waiting tray, a paddle operation is started to drop the sheets to the processing tray. When the paddle is in a position where the paddle does not come into contact with the sheets on the processing tray, the rotation of the paddle is stopped once to prevent the paddle from interfering with the sheets.

Abstract: A sheet processing apparatus having a sheet post-processing unit for performing a post process such as aligning or binding sheets. The sheet processing apparatus is composed of a tray for supporting a sheet bundle, an auxiliary conveying unit including a first arm for hooking an end of the sheet bundle on the tray for moving the first arm, thereby conveying the sheet bundle to a predetermined position on the tray, and returning the first arm from the predetermined position to a home position, and a main conveying unit having a second arm for taking over the sheet bundle from the first arm at the predetermined position on the tray and hooking an end of the sheet bundle for moving the second arm, conveying the sheet bundle taken over, and discharging it from the tray.

Abstract: A finisher includes a bundle hook configured to push a sheet bundle in a first direction and convey the sheet bundle; a drive unit configured to drive the bundle hook in the first direction and a second direction; a discharge unit configured to discharge the sheet bundle conveyed by the bundle hook; a stacking unit configured to stack the sheet bundle discharged by the discharge unit; and a control unit configured to control the drive unit to drive the bundle hook in the second direction if the drive unit drives the bundle hook in the first direction and the discharge unit discharges the sheet bundle.

Abstract: A sheet post-process apparatus includes a waiting tray and a processing tray. The waiting tray is provided in the middle of a conveying path and makes standby sheets in the case where a post-process is required. The processing tray has a function which causes the sheets made standby on the waiting sheet to be dropped by self-weight. With this function, the processing tray receives the sheets moved to be dropped and the sheets conveyed from the conveying path without intervening the waiting tray, before carrying out the post-process. Sheet bundles formed on the processing tray are stacked on a storage tray by a sheet conveying mechanism after they have been post-processed.

Abstract: A sheet folding apparatus, including: a sheet folder configured to fold a sheet bundle; a sheet tray configured to support the sheet bundle folded by the sheet folder; a first frame configured to support the sheet folder; a second frame configured to movably support the first frame and the sheet tray; a first sensor unit supported by the second frame, configured to change its condition depending on presence of the sheet bundle on the sheet tray; a second sensor unit supported by the first frame, configured to detect the condition of the first sensor unit; and a controller supported by the first frame, configured to control the sheet folder according to the detection of the second sensor unit.