Abstract: There is provided a technique in which in a case where a sheet folding process or a staple process is performed, even in the case where the size precision of a sheet used is not satisfactory, the high-precision staple process and folding process can be performed to the sheet. In a sheet processing method of a sheet processing apparatus to perform a specified process to a sheet, a relatively moved sheet is detected, the size of the sheet is calculated based on the detection result, and a position where the specified process is performed to a bundle of sheets as an object of the specified process is adjusted based on the calculated sheet size.

Abstract: There is provided a technique in which while the occurrence of a sheet jam is avoided, a pair of folding rollers for a folding process and a stapler for a staple process can be disposed to be close to each other, and a contribution can be made to the improvement of productivity.

Abstract: A sheet finishing apparatus including a finishing unit configured to perform finishing on a sheet conveyed from an image forming apparatus, a sensor group including device sensors that are operated by a power source voltage supplied from the image forming apparatus and detect states of a plurality of devices in the sheet finishing unit, and sheet sensors that are for detecting the sheet in the finishing unit, and a control unit to control the plurality of devices in response to detection results of the sensor group. While a first finishing is being executed in the finishing unit, the control unit keeps the sheet sensor in an operable state, stops execution of another finishing, and stops operation of the device sensor for the another finishing.

Abstract: There is provided a technique in which in a case where a sheet folding process or a staple process is performed, even in the case where the size precision of a sheet used is not satisfactory, the high-precision staple process and folding process can be performed to the sheet. In a sheet processing method of a sheet processing apparatus to perform a specified process to a sheet, a relatively moved sheet is detected, the size of the sheet is calculated based on the detection result, and a position where the specified process is performed to a bundle of sheets as an object of the specified process is adjusted based on the calculated sheet size.

Abstract: A sheet folding apparatus includes a sheet supporting member which has an inclined surface to support a stack of sheets, a sheet position adjuster which adjusts a position of the stack of sheets along the inclined surface, a sheet pressing unit which presses the stack of sheets from a lower side of the stack of sheets to an upper side of the stack of sheet, and a folding unit which folds the stack of sheets pressed by the sheet pressing unit.

Abstract: There is provided a technique in which while the occurrence of a sheet jam is avoided, a pair of folding rollers for a folding process and a stapler for a staple process can be disposed to be close to each other, and a contribution can be made to the improvement of productivity.

Abstract: A sheet finishing apparatus includes an inlet roller to receive a sheet conveyed from an image forming apparatus, a sheet introduction unit to guide the sheet received by the inlet roller to a finishing unit, a sheet ejection unit to guide the sheet performed to a post process by the finishing unit to an ejection port and to eject from the ejection port, a paper storage tray to receive the ejected sheet, a drive unit including a plurality of motors to drive respective devices, and a control unit to control operations of the plurality of motors. In a trial operation of the sheet finishing apparatus, the control unit controls the plurality of motors, and first drives a motor with a sound pressure level less than a previously set reference level.

Abstract: There is provided a technique which can greatly improve throughput at the time when, after a folding process is performed to a bundle of sheets, the bundle of sheets subjected to the folding process is transported to a downstream side, and can prevent a wrinkle from occurring in the bundle of sheets at the time of the folding process. A sheet transport speed of a pair of rollers is changed from a first transport speed to a second transport speed at a specified timing between when a folding blade finishes a pressing operation of the bundle of sheets and starts a return operation to a waiting position and when a rear edge of the bundle of sheets pressed into a nip of a pair of rollers by the folding blade passes through the nip of the pair of rollers.

Abstract: There is provided a technique in which a retracting operation of a bundle of sheets from a stapler after a staple process can be stably performed irrespective of the number of sheets constituting the bundle of sheets or the transport resistance. When the bundle of sheets subjected to the staple process is moved by a stacker in a direction of retracting from the stapler, an alignment roller is caused to come in contact with the bundle of sheets held by the stacker and to assist the movement of the bundle of sheet.

Abstract: A sheet processing apparatus of an embodiment includes a processing tray on which a sheet conveyed from an image forming apparatus is placed, a stapler to staple the sheet placed on the processing tray, a sheet discharge mechanism to discharge the stapled sheet from the processing tray to a discharge port, a liftable storage tray on which the sheet discharged from the discharge port is stacked, and a guide material which is provided on the storage tray and guides insertion of a sheet when the sheet is inserted from the discharge port into the stapler and manual stapling is performed.

Abstract: In the staple process and folding process after performing switchback transport of a sheet, there is provided a technique which can be made to the improvement of maintenance in the case where a sheet jam occurs in the vicinity of the switchback position.

Abstract: A sheet finishing apparatus includes an inlet roller to receive a sheet conveyed from an image forming apparatus, a sheet introduction unit to guide the sheet received by the inlet roller to a finishing unit, a sheet ejection unit to guide the sheet subjected to the finishing by the finishing unit to an ejection port and to eject from the ejection port, a storage tray to receive the ejected sheet, a drive unit including plural motors to drive respective devices, and a control unit to control operations of the plural motors. In a trial operation of the sheet finishing apparatus, the control unit controls the plural motors, and shifts the timings and performs driving to prevent plural motors with sound pressure levels not less than a previously set reference level from being simultaneously operated.

Abstract: There is provided a technique in which while the occurrence of a sheet jam is avoided, a pair of folding rollers for a folding process and a stapler for a staple process can be disposed to be close to each other, and a contribution can be made to the improvement of productivity.

Abstract: A sheet finishing apparatus includes an inlet roller to receive a sheet conveyed from an image forming apparatus, a sheet introduction unit to guide the sheet received by the inlet roller to a finishing unit, a sheet ejection unit to guide the sheet subjected to the finishing by the finishing unit to an ejection port and to eject from the ejection port, a storage tray to receive the ejected sheet, a drive unit including plural motors to drive respective devices, and a control unit to control operations of the plural motors. In a trial operation of the sheet finishing apparatus, the control unit controls the plural motors, and shifts the timings and performs driving to prevent plural motors with sound pressure levels not less than a previously set reference level from being simultaneously operated.

Abstract: According to one embodiment, a sheet post-processing apparatus includes a machine body, a first roller pair, a tray, a second roller pair, a driving unit, an inlet sensor, a receiving unit and a control unit. The inlet sensor is configured to detect presence or absence of the sheet in the first roller pair driven by the driving unit. The receiving unit is configured to receive, from an image forming apparatus, sheet length information in the sheet conveying direction of the sheet as a target to which the print job is applied. The control unit is configured to control the driving unit to rotate, if the sheet length information indicates special length and the inlet sensor detects a trailing end of the sheet, at least rollers of the second roller pair a predetermined number of times and stop the rollers, the second roller pair nipping the sheet.

Abstract: There is provided a technique in which a retracting operation of a bundle of sheets from a stapler after a staple process can be stably performed irrespective of the number of sheets constituting the bundle of sheets or the transport resistance. When the bundle of sheets subjected to the staple process is moved by a stacker in a direction of retracting from the stapler, an alignment roller is caused to come in contact with the bundle of sheets held by the stacker and to assist the movement of the bundle of sheet.

Abstract: There is provided a technique which can greatly improve throughput at the time when, after a folding process is performed to a bundle of sheets, the bundle of sheets subjected to the folding process is transported to a downstream side, and can prevent a wrinkle from occurring in the bundle of sheets at the time of the folding process. A sheet transport speed of a pair of rollers is changed from a first transport speed to a second transport speed at a specified timing between when a folding blade finishes a pressing operation of the bundle of sheets and starts a return operation to a waiting position and when a rear edge of the bundle of sheets pressed into a nip of a pair of rollers by the folding blade passes through the nip of the pair of rollers.

Abstract: A sheet finishing apparatus includes an inlet roller to receive a sheet conveyed from an image forming apparatus, a sheet introduction unit to guide the sheet received by the inlet roller to a finishing unit, a sheet ejection unit to guide the sheet performed to a post process by the finishing unit to an ejection port and to eject from the ejection port, a paper storage tray to receive the ejected sheet, a drive unit including a plurality of motors to drive respective devices, and a control unit to control operations of the plurality of motors. In a trial operation of the sheet finishing apparatus, the control unit controls the plurality of motors, and first drives a motor with a sound pressure level less than a previously set reference level.

Abstract: A post-processing apparatus that is set beside an image forming apparatus and applies staple processing to sheets subjected to image formation and folds the sheets to manufacture a booklet includes a hooking control mechanism that is provided on the opposite side of center folding rollers across a sheet bundle and pushes the sheet bundle in a stapler direction to prevent a bent staple from hooking on an edge of an anvil.

Abstract: A sheet folding apparatus includes a fold unit which folds a center of a sheet bundle to form a fold line, and a reinforce roller which moves along the fold line while applying pressure to the fold line to reinforce the fold line. The reinforce roller includes plural sub-rollers which are concentrically coupled to each other in a rotation axis direction, and the respective sub-rollers apply different pressures to the fold line.