An orientation correcting device includes a first transporting unit that nips and transports a sheet; a detecting unit that detects a tilt of the sheet that is transported by the first transporting unit; a second transporting unit that nips and transports the sheet that has been transported by the first transporting unit; a flexure forming unit that, with the second transporting unit stopped, forms a flexure in the sheet as a result of causing the sheet that is transported by the first transporting unit to strike against the second transporting unit; and a moving unit that, with the second transporting unit stopped and the flexure formed in the sheet by the flexure forming unit, moves the second transporting unit in a crossing direction that crosses a transport direction of the sheet in accordance with an amount and a direction of the sheet tilt detected by the detecting unit.

An orientation correcting device includes a first transporting unit that nips and transports a sheet; a detecting unit that detects a tilt of the sheet that is transported by the first transporting unit; a second transporting unit that nips and transports the sheet that has been transported by the first transporting unit; a flexure forming unit that, with the second transporting unit stopped, forms a flexure in the sheet as a result of causing the sheet that is transported by the first transporting unit to strike against the second transporting unit; and a moving unit that, with the second transporting unit stopped and the flexure formed in the sheet by the flexure forming unit, moves the second transporting unit in a crossing direction that crosses a transport direction of the sheet in accordance with an amount and a direction of the sheet tilt detected by the detecting unit.

An image forming apparatus including an image forming portion, a moving portion, a re-conveyance portion, a detection portion, and a control portion is provided. The image forming portion is configured to form an image on a sheet that is conveyed. The moving portion is configured to move the sheet in a width direction. The re-conveyance portion is configured to invert the sheet having the image formed on a first surface thereof convey the sheet to the image forming portion again. The control portion is configured to control, based on a detection result of the detection portion, the moving portion to move the sheet in the width direction such that the center of the image formed on the first surface in the width direction and a center of the image to be formed on the second surface in the width direction coincide.

A sheet processing system for automated sheet adjustment includes a sensor system which captures at least a first image of a sheet of print media as the sheet is conveyed on a main transport path between a print media supply module and a marking device of an image rendering module. A control module computes a lateral error for the sheet, based on the captured at least first image, and computes an adjustment based on the computed lateral error. A sheet transport path adjustment mechanism translates a first portion of the main transport path relative to a second portion of the main transport path, based on the computed adjustment.

In some examples, a sheet processing machine includes at least one sensor device that includes at least two sensors configured as a camera. The sheet processing machine further includes at least one infeed system. The at least one sensor device is configured to control, by open-loop control and/or closed-loop control, at least one servo drive of the infeed system as a function of at least one sheet of sheets being detected by the at least two sensors. The at least two sensors are configured to selectively detect at least one edge and/or printing mark of the sheets. Some examples likewise relate to a method for controlling, by open-loop control and/or closed-loop control, at least one component of a sheet processing machine.

In some examples, a sheet processing machine includes at least one sensor device that includes at least two sensors configured as a camera. The sheet processing machine further includes at least one infeed system. The at least one sensor device is configured to control, by open-loop control and/or closed-loop control, at least one servo drive of the infeed system as a function of at least one sheet of sheets being detected by the at least two sensors. The at least two sensors are configured to selectively detect at least one edge and/or printing mark of the sheets. Some examples likewise relate to a method for controlling, by open-loop control and/or closed-loop control, at least one component of a sheet processing machine.

A sheet positioning member is provided on a sheet placing surface in such a way as to be movable in a predetermined first direction. The sheet positioning member includes a moving body, an abutting portion, an operation member, and a cam portion. The moving body moves in the first direction on the sheet placing surface. The abutting portion has an abutting surface that abuts on the side end portion when the sheet positioning member positions the sheet. The operation member is supported by the moving body so as to be pivotable around a support shaft that extends in the first direction, on a side of a back surface of the abutting portion. The cam portion displaces the abutting portion toward the side end portion by being pressed by the operation member in response to a pivoting operation of the operation member.

A sheet positioning member is provided on a sheet placing surface in such a way as to be movable in a predetermined first direction. The sheet positioning member includes a moving body, an abutting portion, an operation member, and a cam portion. The moving body moves in the first direction on the sheet placing surface. The abutting portion has an abutting surface that abuts on the side end portion when the sheet positioning member positions the sheet. The operation member is supported by the moving body so as to be pivotable around a support shaft that extends in the first direction, on a side of a back surface of the abutting portion. The cam portion displaces the abutting portion toward the side end portion by being pressed by the operation member in response to a pivoting operation of the operation member.

An image forming apparatus, in which a method of positional adjustment performed in image forming, includes an image bearer, a transfer device to transfer an image formed on the image bearer onto a recording medium having a first side and a second side, a recording medium conveying path along which the recording medium travels to the transfer device, a first detector and a second detector to detect positional information of the recording medium on or near the recording medium conveying path, in which the first detector being disposed closer to the transfer device than the second detector to the transfer device in a sheet conveying direction on the recording medium conveying path, and an adjuster to adjust a position of the image based on at least one of former positional information obtained by the first detector and current positional information obtained by the second detector.

An image forming apparatus, in which a method of positional adjustment performed in image forming, includes an image bearer, a transfer device to transfer an image formed on the image bearer onto a recording medium having a first side and a second side, a recording medium conveying path along which the recording medium travels to the transfer device, a first detector and a second detector to detect positional information of the recording medium on or near the recording medium conveying path, in which the first detector being disposed closer to the transfer device than the second detector to the transfer device in a sheet conveying direction on the recording medium conveying path, and an adjuster to adjust a position of the image based on at least one of former positional information obtained by the first detector and current positional information obtained by the second detector.