A sheet processing includes a first conveyance path, a buffering portion, a second conveyance path, a conveyance roller pair, a supporting portion, a moving member, a regulating portion, and a processing unit. The buffering portion is configured to superimpose a first sheet and a second sheet on each other in a state of being offset from each other in a sheet conveyance direction. An offset amount, by which a leading end of the first sheet in the sheet conveyance direction projects downstream in the sheet conveyance direction with respect to a leading end of the second sheet in the sheet conveyance direction in a state before the first sheet and the second sheet are discharged onto the supporting portion, is larger than a distance from a sheet contact position of the moving member to the regulating portion in the sheet conveyance direction.

To provide a configuration for allowing a user to easily take out a sheet stopped on a conveying belt. Regulating guides are disposed on both sides of a conveying belt in a sheet width direction Y and can guide both end edges in the sheet width direction of a sheet S being conveyed while being nipped by the conveying belt and the balls. A take-out port is provided on a side close to the regulating guide in the sheet width direction and serves as an opening for taking out the sheet stopped on the conveying belt. The regulating guide on a side away from the take-out port moves in the sheet width direction Y toward the take-out port when the sheet is stopped on the conveying belt.

A sheet processing apparatus includes a buffering portion having a reverse conveyance roller pair and an intermediate roller pair, with the reverse conveyance roller pair reversing a conveyance direction of a sheet received from a first conveyance path and delivering the reversed sheet into a second conveyance path and being configured to come into contact with and be separated from each other. The intermediate roller pair is disposed in the second conveyance path and disposed upstream of a conveyance roller pair in a sheet conveyance direction, and the reverse conveyance roller pair is caused to nip a first sheet and a second sheet by causing the reverse conveyance roller pair to abut each other after receiving the second sheet by the reverse conveyance roller pair from the first conveyance path in a state in which the intermediate roller pair nips the first sheet reversed by the reverse conveyance roller pair and the reverse conveyance roller pair is separated from each other.

There is provided a sheet conveyance device that includes a first conveyance roller and a second conveyance roller that are arranged at a position other than a center in a direction of sheet width in a sheet conveyance path, a roller selector that selects the first conveyance roller or the second conveyance roller as a roller to convey a sheet, and a controller that causes the roller selector to select the first conveyance roller or the second conveyance roller. The first conveyance roller is made of a material that causes a speed of the sheet conveyed by the first conveyance roller in contact with the first conveyance roller to be higher than a rotation speed of the first conveyance roller. The second conveyance roller is made of a material that causes a speed of the sheet conveyed by the second conveyance roller in contact with the second conveyance roller to be lower than a rotation speed of the second conveyance roller.

A pair of regulating guides can guide both end edges in a sheet width direction Y of a sheet being conveyed being nipped by a conveying belt and balls. The pair of regulating guides can move to their respective guide positions each for guiding one of both end edges of the sheet and their respective retracting positions each retracting from one of the both end edges of the sheet by a distance larger than the guide position. A guide moving unit for moving the pair of regulating guides makes each of the pair of regulating guides reach the guide position from the retracting position after the rear end of the sheet passed from a conveying roller pair positioned on the upstream side to the conveying belt passes the conveying roller pair.

A sheet discharging apparatus includes a stacking portion, a first conveyance portion, a detection portion, a second conveyance portion, a third conveyance portion, and a control portion. The control portion is configured to execute a discharge operation by causing the sheet discharging apparatus to reverse a conveyance direction of a first sheet conveyed from the first conveyance portion to the second conveyance portion and deliver the first sheet to the third conveyance portion by using the second conveyance portion, convey the first sheet toward the second conveyance portion by the third conveyance portion, and discharge the first sheet and the second sheet to the stacking portion by using the second conveyance portion in a state where the first sheet and the second sheet are superimposed on each other.

A card processing device may include a print unit and a card inverting unit that inverts front/rear of the card. The print unit may include a thermal head and a card conveyance mechanism. The card inverting unit may include a card holding part, a card drawing and feeding mechanism, and a rotating mechanism that rotates the card holding part. A conveyance path may be provided inside the card holding part. The conveyance path may be linear. The card drawing and feeding mechanism may include two drive rollers, and two pad rollers. A distance between a center of the drive roller and a center of the thermal head may be shorter than a length of the card. The thermal head may print on the card while the card conveyance mechanism conveys the card. The rotating mechanism may rotate the card holding part such that the conveyance path is inclined.

A first roller pair disposed upstream of a second roller pair is separated from each other by a separating mechanism. A control portion is configured to start rotating the second roller pair after a leading edge of a sheet in a sheet conveyance direction is abutted against the second roller pair in a stopped condition. The control portion is configured to execute, based on the information concerning the sheet length acquired by the acquisition portion, either one of a plurality of modes including a first mode of rotating an upstream roller pair and the first roller pair to convey the sheet while the first roller pair is in a contact condition and a second mode of operating the separating mechanism to separate the first roller pair and of rotating the upstream roller pair to convey the sheet while the first roller pair is in a separated condition.

A sheet conveyance apparatus includes a first conveyance path, a detection portion, a second conveyance path, a discharge unit, and a controller. The discharge unit is movable in a width direction and is configured to perform a discharge operation of discharging a sheet onto a first discharge portion and a reversing operation of reversing and conveying the sheet to the second conveyance path. The controller is configured to control the discharge unit and to execute a first alignment control when the reversing operation is performed. The first alignment control is a control in which the discharge unit moves the sheet in the width direction based on a position of the sheet detected by the detection portion to align the sheet at a target position.

A sheet conveying apparatus for conveying a sheet in a conveying direction includes a pair of conveying rollers receiving and conveying a sheet; an endless conveying belt conveying the sheet; a plurality of balls to be rotatable in any direction while nipping the sheet with the conveying surface; a pair of regulating guides disposed on both sides of the conveying belt; a guide moving unit that moves the pair of regulating guides; and a roller moving unit that moves at least one of the pair of conveying rollers to a nip position and a nip release position. Before a rear end of the sheet passes the pair of conveying rollers, the pair of conveying rollers is moved to the nip release position by the roller moving unit, and then, the guide moving unit makes each of the pair of regulating guides reach the guide position from the retracting position.