Abstract: An image forming apparatus includes a cover that is opened to permit an operator to access an interior of the image forming apparatus to install a toner cartridge in the image forming apparatus, an image forming unit configured to form an image with toner supplied from the installed toner cartridge, and a control unit configured to execute a process to determine whether or not the installed toner cartridge is genuine upon detecting that the image forming apparatus is in a first state and upon detecting that the cover has been opened and then closed for a time period and the time period exceeds a threshold time period.

Abstract: An image forming apparatus includes a cover that is opened to permit an operator to access an interior of the image forming apparatus to install a toner cartridge in the image forming apparatus, an image forming unit configured to form an image with toner supplied from the installed toner cartridge, and a control unit configured to execute a process to determine whether or not the installed toner cartridge is genuine upon detecting that the image forming apparatus is in a first state and upon detecting that the cover has been opened and then closed for a time period and the time period exceeds a threshold time period.

Abstract: In accordance with one embodiment, a paper processing apparatus comprises a perforation unit configured to include a rotary blade for perforating conveyed paper in a direction parallel to a conveyance direction and be capable of moving the rotary blade in a direction orthogonal to a conveyance path of the paper; a skew detection section configured at the upstream side of the perforation unit to detect the skew of the paper; a skew correction mechanism configured to incline the perforation unit and the rotary blade according to the detected skew amount of the paper; and a control section configured to control the position of the rotary blade and move the rotary blade to a perforation processing position before the paper is conveyed to the perforation unit.

Abstract: In accordance with one embodiment, a paper processing apparatus comprises a perforation unit configured to include a rotary blade for perforating conveyed paper in a direction parallel to a conveyance direction and be capable of moving the rotary blade in a direction orthogonal to a conveyance path of the paper; a skew detection section configured at the upstream side of the perforation unit to detect the skew of the paper; a skew correction mechanism configured to incline the perforation unit and the rotary blade according to the detected skew amount of the paper; and a control section configured to control the position of the rotary blade and move the rotary blade to a perforation processing position before the paper is conveyed to the perforation unit.

Abstract: In accordance with one embodiment, a paper processing apparatus comprises a perforation unit configured to include a rotary blade for perforating conveyed paper in a direction parallel to a conveyance direction and be capable of moving the rotary blade in a direction orthogonal to a conveyance path of the paper; a skew detection section configured at the upstream side of the perforation unit to detect the skew of the paper; a skew correction mechanism configured to incline the perforation unit and the rotary blade according to the detected skew amount of the paper; and a control section configured to control the position of the rotary blade and move the rotary blade to a perforation processing position before the paper is conveyed to the perforation unit.

Abstract: In accordance with one embodiment, a paper processing apparatus comprises a perforation unit configured to include a rotary blade for perforating conveyed paper in a direction parallel to a conveyance direction and be capable of moving the rotary blade in a direction orthogonal to a conveyance path of the paper; a skew detection section configured at the upstream side of the perforation unit to detect the skew of the paper; a skew correction mechanism configured to incline the perforation unit and the rotary blade according to the detected skew amount of the paper; and a control section configured to control the position of the rotary blade and move the rotary blade to a perforation processing position before the paper is conveyed to the perforation unit.

Abstract: In accordance with one embodiment, a paper processing apparatus comprises a perforation unit configured to include a rotary blade for perforating conveyed paper in a direction parallel to a conveyance direction and be capable of moving the rotary blade in a direction orthogonal to a conveyance path of the paper; a skew detection section configured at the upstream side of the perforation unit to detect the skew of the paper; a skew correction mechanism configured to incline the perforation unit and the rotary blade according to the detected skew amount of the paper; and a control section configured to control the position of the rotary blade and move the rotary blade to a perforation processing position before the paper is conveyed to the perforation unit.

Abstract: According to one embodiment, a sheet finishing apparatus includes a finishing section configured to apply finishing to a sheet placed on a processing tray, a sheet discharging section configured to discharge the sheet subjected to the finishing to a stack tray via a discharge port, a roller attached to a shaft provided in parallel to the discharge port and which rotate in a first direction for guiding the sheet in the direction of the finishing section and a second direction for discharging the sheet, and an arm attached to the shaft to extend in the centrifuging direction from the shaft, rotate with the torque of the shaft, and idly rotate when force for regulating the torque acts. The arm flaps down the trailing end of the sheet on the stack tray onto the stack tray.

Abstract: According to one embodiment, a sheet processing apparatus includes: a paper feeding section configured to receive a sheet and feed the sheet; a detecting section configured to detect the fed sheet; a standby tray on which the fed sheet is stacked, the standby tray including a first roller configured to convey the sheet; a second roller configured to pivot to come into contact with and separate from the first roller; a processing tray on which the sheet dropped and supplied from the standby tray is stacked, the processing tray holding the sheet while requested processing is applied to the sheet; a paper discharge section configured to receive the sheet subjected to the processing and discharged from the processing tray; and a control section configured to separate the second roller from the first roller according to a result of the detection during conveyance of the sheet to the standby tray.

Abstract: According to one embodiment, a sheet finishing apparatus includes a finishing section configured to apply finishing to a sheet placed on a processing tray, a sheet discharging section configured to discharge the sheet subjected to the finishing to a stack tray via a discharge port, a roller attached to a shaft provided in parallel to the discharge port and which rotate in a first direction for guiding the sheet in the direction of the finishing section and a second direction for discharging the sheet, and an arm attached to the shaft to extend in the centrifuging direction from the shaft, rotate with the torque of the shaft, and idly rotate when force for regulating the torque acts. The arm flaps down the trailing end of the sheet on the stack tray onto the stack tray.

Abstract: According to one embodiment, a sheet processing apparatus includes: a paper feeding section configured to receive a sheet and feed the sheet; a detecting section configured to detect the fed sheet; a standby tray on which the fed sheet is stacked, the standby tray including a first roller configured to convey the sheet; a second roller configured to pivot to come into contact with and separate from the first roller; a processing tray on which the sheet dropped and supplied from the standby tray is stacked, the processing tray holding the sheet while requested processing is applied to the sheet; a paper discharge section configured to receive the sheet subjected to the processing and discharged from the processing tray; and a control section configured to separate the second roller from the first roller according to a result of the detection during conveyance of the sheet to the standby tray.

Abstract: According to one embodiment, a sheet processing apparatus pushes, with a folding plate, a sheet bundle held by a stacker into a nip portion formed by a first folding roller and a second folding roller and forms a fold. The first folding roller includes a first folding section configured to come into contact with the second folding roller and form the nip portion and a first groove configured to form a gap between the first groove and the second folding roller in a state in which the first folding section is in contact with the second folding roller. The first groove is formed in a position where an end in the width direction of a sheet bundle of a predetermined size pushed in by the folding plate passes.

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 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 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 post-processing apparatus includes first rollers that convey a sheet, a waiting tray that includes a pair of sheet supporting units movable in a direction orthogonal to a conveying direction of the sheet and on which the sheet conveyed via the first rollers is stacked, second rollers that are provided downstream the waiting tray along the conveying direction of the sheet and are suspended, when projection of a leading end of the sheet from the waiting tray reaches a predetermined projection amount according to the conveyance of the sheet, simultaneously with the first rollers disposed upstream the waiting tray, and an aligning unit that stacks the sheet and continuously-conveyed plural sheets dropped after a trailing end of the sheet is discharged onto the waiting tray by the first rollers and the second rollers and aligns a bundle of the plural sheets.

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, 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 finishing apparatus includes an outer wall having a discharge port of sheets; a movable tray on which the sheets discharged from the discharge port are stacked, the movable tray vertically moving along the outer wall according to a stack amount of the sheets; a curl sensor that detects a curled state of the sheets before the sheets are discharged from the discharge port; and a control unit that controls at least one of a discharge speed of the sheets and a position of the movable tray according to the detected curled state of the sheets.