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Sheet post-process apparatus and waiting tray

  • US 20060067764A1
  • Filed: 12/10/2004
  • Published: 03/30/2006
  • Est. Priority Date: 09/28/2004
  • Status: Active Grant
First Claim
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1. A sheet post-process apparatus, the apparatus comprising:

  • a waiting tray which temporarily retains a transported sheet in a waiting mode, and releases the retention to drop the sheet;

    a processing tray which bundles sheets dropped from the waiting tray to carry out predetermined processing, and ejects the sheets; and

    a storage tray which holds the bundle of sheets processed and ejected on the processing tray, wherein the waiting tray comprises;

    left and right lower face support members which support left and right lower faces in a sheet transport direction during retention in a waiting mode and release the support of the left and right lower faces during release of the retention, a width of an opening portion formed between both of the members being widely formed at a distal end side compared with a proximal end side in a transport direction of a sheet transported to the waiting tray;

    drive means for opening the left and right lower face support members to widen the width of the opening portion;

    sensor means for sensing the sheet transported to the waiting tray; and

    control means for driving the driver device based on the sense signal of the sensor means, and the control means controls the drive means so that both of the support members are opened to an extent such that the width of the opening portion is narrower than the sheet width at the proximal end side in the transport direction of the sheet and is wider than the sheet width at the distal end side thereof and so that the sheet is dropped from the sheet distal end to the processing tray without being retained in a waiting mode.

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