Abstract: A sheet finisher of the invention includes a saddle stitch unit configured to stitch a center of a sheet bundle, in which printed sheets are bundled, with a staple, a fold unit configured to fold the center stitched by the saddle stitch unit and to form a fold line, and a fold reinforcing unit configured to reinforce the fold line formed by the fold unit, the fold reinforcing unit includes a roller unit that includes a reinforce roller and moves along a direction of the fold line while applying pressure by the reinforce roller to the fold line of the sheet bundle transported from the fold unit, a drive unit configured to move the roller unit along the direction of the fold line, and a control unit configured to control a movement speed of the roller unit, and the control unit causes the roller unit to move at a first speed in an outside of a specified range including the edge of the staple, and causes the roller unit to move at a second speed not higher than the first speed in the specified range including th

Abstract: A sheet finisher of the invention includes a saddle stitch unit configured to stitch a center of a sheet bundle in which printed sheets are bundled, a fold unit configured to fold the center stitched by the saddle stitch unit and to form a fold line, a fold reinforcing unit that includes a reinforce roller, moves the reinforce roller along a direction of the fold line while applying pressure by the reinforce roller to the fold line of the sheet bundle transported from the fold unit, and reinforces the fold line, and a control unit configured to transport the sheet bundle from the fold unit to the fold reinforcing unit and to control to stop the fold line of the sheet bundle at a position of the reinforce roller, and the control unit changes, according to a thickness of the sheet bundle, a transport distance from a specified position in the fold reinforcing unit to the position where the sheet bundle is stopped.

Abstract: A sheet finisher of the invention includes a saddle stitch unit configured to stitch a center of a sheet bundle in which printed sheets are bundled, a fold unit configured to fold the center stitched by the saddle stitch unit and to form a fold line, and a fold reinforcing unit configured to reinforce the fold line formed by the fold unit, and the fold reinforcing unit includes a placement table on which the sheet bundle transported from the fold unit is placed, a band-like elastic member that is extended to face the fold line of the placed sheet bundle and is formed to be longer than the length of the fold line, and a roller unit that includes a reinforce roller and moves the reinforce roller along the direction of the fold line while pressing it to the fold line through the intervening elastic member.

Abstract: A sheet finisher of the invention includes a saddle stitch unit configured to stitch a center of a sheet bundle, in which printed sheets are bundled, with a staple, a fold unit configured to fold the center stitched by the saddle stitch unit and to form a fold line, and a fold reinforcing unit configured to reinforce the fold line formed by the fold unit, the fold reinforcing unit includes a roller unit that includes a reinforce roller and moves along a direction of the fold line while applying pressure by the reinforce roller to the fold line of the sheet bundle transported from the fold unit, a drive unit configured to move the roller unit along the direction of the fold line, and a control unit configured to control a movement speed of the roller unit, and the control unit causes the roller unit to move at a first speed in an outside of a specified range including the edge of the staple, and causes the roller unit to move at a second speed not higher than the first speed in the specified range including th

Abstract: A sheet finisher of the invention includes a saddle stitch unit configured to stitch a center of a sheet bundle in which printed sheets are bundled, a fold unit configured to fold the center stitched by the saddle stitch unit and to form a fold line, and a fold reinforcing unit configured to reinforce the fold line formed by the fold unit, the fold reinforcing unit includes a roller unit that includes a reinforce roller with a structure for preventing an occurrence of a wrinkle, and moves along a direction of the fold line while applying pressure by the reinforce roller to the fold line of the sheet bundle transported from the fold unit, and a drive unit configured to move the roller unit along the direction of the fold line from a standby position located at a position separate from an end of the sheet bundle.

Abstract: A sheet finisher of the invention includes a saddle stitch unit configured to stitch a center of a sheet bundle in which printed sheets are bundled, a fold unit configured to fold the center stitched by the saddle stitch unit and to form a fold line, and a fold reinforcing unit configured to reinforce the fold line formed by the fold unit, the fold reinforcing unit includes a roller unit that includes a first roller and a second roller, nips the fold line of the sheet bundle transported from the fold unit between the first roller and the second roller, and moves along a direction of the fold line while pressing, and a drive unit configured to move the roller unit along the direction of the fold line from a standby position located at a position separate from an end of the sheet bundle, and the first roller and the second roller are separate from each other at the standby position, and approach each other to nip the fold line in a region where the fold line of the sheet bundle exists.

Abstract: A sheet finisher of the invention includes a saddle stitch unit configured to stitch a center of a sheet bundle, in which printed sheets are bundled, with a staple, a fold unit configured to fold the center stitched by the saddle stitch unit and to form a fold line, and a fold reinforcing unit configured to reinforce the fold line formed by the fold unit, the fold reinforcing unit includes a roller unit that includes a reinforce roller and moves along a direction of the fold line while applying pressure by the reinforce roller to the fold line of the sheet bundle transported from the fold unit, a drive unit configured to move the roller unit along the direction of the fold line, and a control unit configured to control a movement speed of the roller unit, and the control unit causes the roller unit to move at a first speed in an outside of a specified range including the edge of the staple, and causes the roller unit to move at a second speed not higher than the first speed in the specified range including th

Abstract: A sheet finisher of the invention includes a saddle stitch unit configured to stitch a center of a sheet bundle in which printed sheets are bundled, a fold unit configured to fold the center stitched by the saddle stitch unit and to form a fold line, and a fold reinforcing unit configured to reinforce the fold line formed by the fold unit, and the fold reinforcing unit includes a placement table on which the sheet bundle transported from the fold unit is placed, a band-like elastic member that is extended to face the fold line of the placed sheet bundle and is formed to be longer than the length of the fold line, and a roller unit that includes a reinforce roller and moves the reinforce roller along the direction of the fold line while pressing it to the fold line through the intervening elastic member.

Abstract: A sheet finisher of the invention includes: a fold unit that forms a fold line with a fold rollers; a roller unit that moves a first roller and a second roller along the fold line while pressing the fold line; a drive unit that moves the roller unit along the fold line from a standby position separate from an end of the sheet bundle; a drive motor that separates the first and the second rollers in a thickness direction at the standby position; and a nipping unit that places the sheet bundle on a first nip plate, and nips it by the first and the second nip plates. Both positions of the nip of the fold rollers and a nip of the first and second rollers are disposed to be substantially coincident with a position on an imaginary plane extending from a surface of the first nip plate.

Abstract: According to an embodiment, a sheet processing apparatus includes: a processing tray on which a sheet conveyed from an image forming apparatus is placed; a lateral alignment unit which has a pair of movable alignment boards, holds and the sheet on the processing tray between the pair of alignment boards, and aligns the sheet; a stapler which staples the sheet placed on the processing tray; a sheet discharge unit which discharges the stapled sheet from the processing tray to a discharge port; and a control unit which control so that the sheet is stapled after an operation of holding the sheet between the pair of alignment boards and then opening the alignment boards is performed plural times, when the sheet is inserted to the stapler from the discharge port and manually stapled.

Abstract: A sheet finisher of the invention includes a fold reinforcing unit that reinforces the fold line. The fold reinforcing unit includes a roller unit, a drive unit that has a single motor and moves the roller unit along the direction of the fold line from a standby position; and a nip unit. The nip unit includes a first nip plate and a second nip plate. The first nip plate and the second nip plate are opened in a thickness direction of the sheet bundle when the roller unit is located at the standby position, and are closed to nip the sheet bundle when the roller unit reinforces the fold line after the sheet bundle is transported to between the first and the second nip plate. The second nip plate is driven to be opened and closed in the thickness direction of the sheet bundle by the single motor.

Abstract: A sheet finisher of the invention includes a saddle stitch unit configured to stitch a center of a sheet bundle in which printed sheets are bundled, a fold unit configured to fold the center stitched by the saddle stitch unit and to form a fold line, and a fold reinforcing unit configured to reinforce the fold line formed by the fold unit, the fold reinforcing unit includes a roller unit that includes a reinforce roller with a structure for preventing an occurrence of a wrinkle, and moves along a direction of the fold line while applying pressure by the reinforce roller to the fold line of the sheet bundle transported from the fold unit, and a drive unit configured to move the roller unit along the direction of the fold line from a standby position located at a position separate from an end of the sheet bundle.

Abstract: A sheet post-processing apparatus includes a stacking tray on which sheets are stacked, an aligning unit that aligns the sheets stacked on the stacking tray, a stapler that staples the sheets aligned by the aligning unit using two members provided on one surface side and the other surface side in a thickness direction of the sheets, first conveying rollers arranged in a position on an upstream side along a conveying direction after stapling of the sheets and in contact with one end of the sheets and driven to rotate after the stapling by the stapler, and second conveying rollers arranged in a position on a downstream side along the conveying direction of the sheets and in contact with the other end of the sheets and driven to rotate at rotation speed different from that of the first conveying rollers after the stapling by the stapler.

Abstract: A sheet post-processing apparatus includes a warming-up device including a first duct connected to a fan to lead warm exhaust air sucked from an image forming apparatus into an apparatus, a second duct provided to lead the warm exhaust air discharged by a fan or ambient Air in a housing to the fan, and a control valve that performs switching control to lead, when a temperature sensor measures temperature equal to or higher than proper operation temperature, high-temperature Air in the housing and the warm exhaust air such that the fan discharges the high-temperature Air and the warm exhaust air to the outside and lead, when the temperature sensor measures temperature lower than the proper operation temperature, the warm exhaust air to the mechanical members of the sheet post-processing apparatus and the temperature sensor.

Abstract: A sheet finisher of the invention includes a saddle stitch unit configured to stitch a center of a sheet bundle in which printed sheets are bundled, a fold unit configured to fold the center stitched by the saddle stitch unit and to form a fold line, and a fold reinforcing unit configured to reinforce the fold line formed by the fold unit, the fold reinforcing unit includes a roller unit that includes a reinforce roller with a structure for preventing an occurrence of a wrinkle, and moves along a direction of the fold line while applying pressure by the reinforce roller to the fold line of the sheet bundle transported from the fold unit, and a drive unit configured to move the roller unit along the direction of the fold line from a standby position located at a position separate from an end of the sheet bundle.

Abstract: A sheet post-processing apparatus includes a warming-up device including a first duct connected to a fan to lead warm exhaust air sucked from an image forming apparatus into an apparatus, a second duct provided to lead the warm exhaust air discharged by a fan or ambient Air in a housing to the fan, and a control valve that performs switching control to lead, when a temperature sensor measures temperature equal to or higher than proper operation temperature, high-temperature Air in the housing and the warm exhaust air such that the fan discharges the high-temperature Air and the warm exhaust air to the outside and lead, when the temperature sensor measures temperature lower than the proper operation temperature, the warm exhaust air to the mechanical members of the sheet post-processing apparatus and the temperature sensor.

Abstract: A sheet finisher of the invention includes a saddle stitch unit configured to stitch a center of a sheet bundle in which printed sheets are bundled, a fold unit configured to fold the center stitched by the saddle stitch unit and to form a fold line, and a fold reinforcing unit configured to reinforce the fold line formed by the fold unit, the fold reinforcing unit includes a placement table on which the sheet bundle transported from the fold unit is placed, and a roller unit that includes a reinforce roller and moves the reinforce roller along a direction of the fold line while pressing it to the fold line, and the placement table is provided with a groove-like edge clearance along an edge of the sheet bundle.

Abstract: A sheet finisher of the invention includes a saddle stitch unit configured to stitch a center of a sheet bundle in which printed sheets are bundled, a fold unit configured to fold the center stitched by the saddle stitch unit and to form a fold line, and a fold reinforcing unit configured to reinforce the fold line formed by the fold unit, the fold reinforcing unit includes a placement table on which the sheet bundle transported from the fold unit is placed, and a roller unit that includes a reinforce roller and moves the reinforce roller along a direction of the fold line while pressing it to the fold line, and the placement table is provided with a groove-like edge clearance along an edge of the sheet bundle.

Abstract: A sheet processing apparatus according to the present invention including a saddle-stitcher configured to fold and discharge a sheet supplied from an image forming apparatus, and an assisting mechanism arranged in a sheet carrier path extending from the image forming apparatus to the saddle-stitcher and configured to form a folding line on the sheet in a first direction orthogonal to a direction of the carrying of the sheet in order to assist folding of the sheet. The assisting mechanism has a disc-shaped roller blade rotatably attached to a moving body that is movable in the first direction.

Abstract: According to one embodiment, a sheet processing apparatus includes a first supporting member which supports a sheet and drops the sheet, a second supporting member which supports the sheet dropped from the first supporting member, a stacking member which stacks sheets, a first discharge member which discharges sheet from the first supporting member to the stacking member, a second discharge member which discharges the sheet on the second supporting member to the stacking member and a control unit. The control unit controls the first discharge member to discharge the sheet one by one from the first supporting member to the stacking member or to drop the sheet to the second supporting member on the basis of a threshold value or a predetermined value different from the threshold value.