SHEET POST-PROCESSING APPARATUS AND IMAGE FORMING SYSTEM INCLUDING THE APPARATUS

    公开(公告)号:US20250002287A1

    公开(公告)日:2025-01-02

    申请号:US18750308

    申请日:2024-06-21

    Abstract: A sheet post-processing apparatus includes a first conveying member, a processing tray, a first processing unit, a reference plate, an alignment member, a home-position detection unit, a drive unit, and a control portion. The alignment member has a shaft joined to a drive unit to rotate, and one or more alignment paddles protruding in a radial direction of the shaft. The control portion calculates a contact assumed interval in which the trailing end of the sheets may make contact with the alignment paddle and an interference timing at which the alignment paddle interferes with a carry-in path of the sheets. If the interference timing falls within the contact assumed interval, the control portion temporarily changes the rotation speed of the alignment member from a reference speed to shift the phase of the alignment paddle so that the interfere timing falls outside the contact assumed interval.

    SHEET POST-PROCESSOR AND IMAGE FORMING SYSTEM PROVIDED WITH THE SAME

    公开(公告)号:US20180105386A1

    公开(公告)日:2018-04-19

    申请号:US15723697

    申请日:2017-10-03

    Inventor: Keisuke EGAWA

    Abstract: A sheet post-processor of this disclosure is provided with a punching device and a registration roller. The punching device is capable of forming punch holes along a first side end edge of a sheet parallel to a sheet width direction orthogonal to a sheet conveyance direction and a second side end edge of the sheet parallel to the sheet conveyance direction. The registration roller is disposed downstream of the punching device in the sheet conveyance direction. The punching device includes a punch unit that forms punch holes through a sheet and an edge sensor that detects the second side end edge of a sheet. In a case of forming punch holes along the second side end edge of a sheet, without skewing of the sheet being corrected by the registration roller, the edge sensor detects the second side end edge, while the punch unit forms punch holes through the sheet.

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