Abstract: A sheet laminator includes a fuser pressure member, a heater, a drive device, and circuitry. The fuser pressure member thermally fixes a two-ply sheet and a sheet medium inserted between two sheets of the two-ply sheet. The heater heats the fuser pressure member. The driver rotates the fuser pressure member. In response to a pause of a rotation of the fuser pressure member, the circuitry turns off a power supply to the heater, and perform one of immediately stopping the fuser pressure member or rotating the fuser pressure member and stopping the fuser pressure member after the rotation of the fuser pressure member, based on a state of the fuser pressure member.

Abstract: A sheet laminator laminates a two-ply sheet and a sheet-shaped medium inserted in the two-ply sheet. The sheet laminator includes a sheet feeder, a multi-feeding detector, a fixing device, an ejection device, a purging portion, a passage switcher, and circuitry. The sheet feeder feeds the two-ply sheet. The multi-feeding detector detects multiple feeding of the two-ply sheet. The fixing device fixes the two-ply sheet by application of heat and pressure. The ejection device ejects the two-ply sheet that has been fixed by the fixing device. The purging portion is disposed at a position different from the ejection device. The passage switcher switches a conveyance passage of the two-ply sheet to the fixing device or to the purging portion. The circuitry conveys the two-ply sheet to the purging portion and retries sheet feeding with another two-ply sheet, in response to detection of multiple feeding of the two-ply sheet.

Abstract: A sheet separation device includes a sheet separator and a conveyor. The sheet separator separates a non-bonding portion of a two-ply sheet in which two sheets are overlapped and bonded together at a bonding portion of the two-ply sheet. The conveyor conveys the two-ply sheet toward the sheet separator while bending the two-ply sheet in a direction that intersects a conveyance direction of the two-ply sheet.

Abstract: A sheet laminator includes a sheet lamination device, a heater, and circuitry. The sheet lamination device performs a sheet laminating operation on an object by application of heat and pressure. The heater heats the sheet lamination device. The circuitry changes between a first mode in which the heater constantly heats the sheet lamination device while the sheet lamination device is turned on and a second mode in which the heater starts heating the sheet lamination device in response to a request of the sheet laminating operation and stops heating the sheet lamination device after a given time has elapsed from completion of the sheet laminating operation. The circuitry adjusts the given time in the second mode.

Abstract: A sheet stacker for use in a device including a stacker portion, a fence, and a guide face. The stacker portion includes a stacker face that is inclined at a predetermined angle with respect to a horizontal plane and receives a plurality of sheets ejected from above and stack the plurality of sheets on the stacker face. The fence includes an angled face to contact an end of the plurality of sheets stacked on the stacker face. The angled face rises in a direction in which the plurality of sheets is stacked, with respect to a lower side of the stacker face. The guide face guides the sheet conveyed along the lower side toward an outlet port to a lower end of the outlet port, the outlet port opening in an exterior of the device to remove the sheet to an outside of the device.

Abstract: A sheet processing apparatus includes a sheet conveyor configured to convey a sheet, a processing tool configured to perform processing to the sheet, a tool contact separation device, a tool moving device, and a tool facing device. The tool contact separation device is configured to contact and separate the processing tool to the sheet. The tool moving device is configured to move the processing tool in a direction intersecting a conveyance direction of the sheet. The tool facing device has an opposing face and is disposed at a position at which the tool facing portion faces the processing tool via the sheet. The tool facing device is configured to move to change the tool facing portion in accordance with a relative moving direction of the sheet with respect to the processing tool when the processing tool performs the processing to the sheet.

Abstract: A drive control device is configured to control a plurality of drive sources configured to drive a single output shaft. The drive control device includes a control unit configured to generate a single drive control signal and transmit the drive control signal to the plurality of drive sources. The drive control device has, as operation modes, a first mode for driving the plurality of drive sources and a second mode for driving a part of the plurality of drive sources.

Abstract: A sheet processing apparatus includes a conveyor, a processing tool, a processing-tool contact-and-separation device, a processing-tool moving device, and a processing-tool facing device. The conveyor conveys a sheet. The processing tool processes the sheet. The processing-tool contact-and-separation device brings the processing tool into contact with the sheet and separates the processing tool from the sheet. The processing-tool moving device moves the processing tool in an intersecting direction intersecting a conveyance direction of the sheet. The processing-tool facing device faces the processing tool with the sheet interposed between the processing-tool facing device and the processing tool. The processing-tool contact-and-separation device includes a regulating member configured to regulate movement of the sheet in a different direction from both the conveyance direction and the intersecting direction.

Abstract: A sheet processing apparatus includes a sheet conveyor, a processing tool, a tool contact separation device, a tool moving device, and a tool facing device. The sheet conveyor is configured to convey a sheet. The processing tool is configured to perform processing to the sheet. The tool contact separation device is configured to contact and separate the processing tool with respect to the sheet. The tool moving device is configured to move the processing tool in a direction intersecting a conveyance direction of the sheet. The tool facing device includes a tool facing portion and a sheet gripper. The tool facing portion includes a rotary member supported by a shaft and is disposed at a position facing the processing tool via the sheet. The sheet gripper includes a rotary member supported by a shaft and is configured to grip the sheet with the tool facing portion.

Abstract: A sheet processing apparatus includes a sheet conveyor, a processing tool, a tool contact separation device, a tool moving device, and a tool facing device. The sheet conveyor is configured to convey a sheet. The processing tool is configured to perform processing to the sheet. The tool contact separation device is configured to contact and separate the processing tool with respect to the sheet. The tool moving device is configured to move the processing tool in a direction intersecting a conveyance direction of the sheet. The tool facing device includes a tool facing portion and a sheet gripper. The tool facing portion includes a rotary member supported by a shaft and is disposed at a position facing the processing tool via the sheet. The sheet gripper includes a rotary member supported by a shaft and is configured to grip the sheet with the tool facing portion.

Abstract: A sheet processing apparatus includes a sheet conveyor, a plurality of processing tools, and a tool moving device. The sheet conveyor is configured to convey a sheet. The plurality of processing tools is disposed in a conveyance direction of the sheet and is configured to perform processing to the sheet. The tool moving device is configured to move the plurality of processing tools in an intersecting direction intersecting the conveyance direction of the sheet.

Abstract: A sheet processing apparatus includes a sheet conveyor configured to convey a sheet, a processing tool configured to perform processing to the sheet, a tool contact separation device, a tool moving device, and a tool facing device. The tool contact separation device is configured to contact and separate the processing tool to the sheet. The tool moving device is configured to move the processing tool in a direction intersecting a conveyance direction of the sheet. The tool facing device has an opposing face and is disposed at a position at which the tool facing portion faces the processing tool via the sheet. The tool facing device is configured to move to change the tool facing portion in accordance with a relative moving direction of the sheet with respect to the processing tool when the processing tool performs the processing to the sheet.

Abstract: Provided is a liquid droplet discharging unit including a liquid droplet discharging port, a liquid retaining section including the liquid droplet discharging port, two tubes disposed in communication with the liquid retaining section, and first and second liquid sucking/ejecting members coupled to the two tubes respectively, wherein while the first liquid sucking/ejecting member is in a sucking or ejecting state, the second liquid sucking/ejecting member is in a non-sucking or non-ejecting state correspondingly.

Abstract: A drive control device is configured to control a plurality of drive sources configured to drive a single output shaft. The drive control device includes a control unit configured to generate a single drive control signal and transmit the drive control signal to the plurality of drive sources. The drive control device has, as operation modes, a first mode for driving the plurality of drive sources and a second mode for driving a part of the plurality of drive sources.

Abstract: Provided is a liquid droplet discharging unit including a liquid droplet discharging port, a liquid retaining section including the liquid droplet discharging port, two tubes disposed in communication with the liquid retaining section, and first and second liquid sucking/ejecting members coupled to the two tubes respectively, wherein while the first liquid sucking/ejecting member is in a sucking or ejecting state, the second liquid sucking/ejecting member is in a non-sucking or non-ejecting state correspondingly.

Abstract: A sheet processing apparatus includes a pressing unit including a first pressing member and a second pressing member. The pressing unit is configured to sandwich and press a fold part of a folded sheet bundle between the first pressing member and the second pressing member. The sheet processing apparatus also includes a moving unit configured to move a position pressed by the pressing unit in a direction of a fold of the sheet bundle. A position pressed by the first pressing member on the sheet bundle and another position pressed by the second pressing member on the sheet bundle are shifted with respect to each other in the direction of the fold of the sheet bundle.

Abstract: A sheet conveying device, which is included in an image reading device and an image forming apparatus, includes a passage forming body and a sound absorber. The passage forming body is configured to define a sheet conveying passage through which a sheet passes. The sound absorber includes a hollow portion and a communication portion configured to communication the hollow portion and the sheet conveying passage. A position of the communication portion of the sound absorber is changeable in the sheet conveying passage. The sheet conveying device included in the image reading device includes an original document conveying device configured to convey an original document having an image on a surface. The sheet conveying device included in the image forming apparatus includes a recording medium conveying device configured to convey the recording medium accommodated in a recording medium container to the image forming device.

Abstract: A sheet conveying device, which is included in an image reading device and an image forming apparatus, includes a passage forming body and a sound absorber. The passage forming body is configured to define a sheet conveying passage through which a sheet passes. The sound absorber includes a hollow portion and a communication portion configured to communication the hollow portion and the sheet conveying passage. A position of the communication portion of the sound absorber is changeable in the sheet conveying passage. The sheet conveying device included in the image reading device includes an original document conveying device configured to convey an original document having an image on a surface. The sheet conveying device included in the image forming apparatus includes a recording medium conveying device configured to convey the recording medium accommodated in a recording medium container to the image forming device.

Abstract: A sheet processing device includes a sheet processing unit that is moved to perform sheet processing on a sheet; a sheet-processing moving unit that moves the sheet processing unit; a drive-mode determining unit that determines a drive mode of the sheet-processing moving unit; and a drive control unit that drives the sheet-processing moving unit in accordance with the drive mode. The drive-mode determining unit determines the drive mode such that the sheet processing unit is moved at combination acceleration that is a combination of first acceleration and second acceleration with a shift of time that is determined based on the cycle of the natural vibration that occurs during acceleration of the sheet processing unit.

Abstract: According to an embodiment, there is provided a sheet processing apparatus includes a stacking unit that stacks a sheet conveyed thereto; a first alignment unit that aligns the sheet or a bundle of sheets stacked in the stacking unit in a sheet conveying direction; a second alignment unit that aligns the sheet or the bundle of sheets stacked in the stacking unit in a direction orthogonal to the sheet conveying direction; a pressing unit that presses the bundle of sheets at an end portion thereof on a predetermined one side; and a control unit that causes at least one of the first and second alignment units to execute an alignment operation during a press operation of the sheet or the bundle of sheets performed by the pressing unit.