Automatic duplex and simplex document handler for electronic input

  • US 5,430,536 A
  • Filed: 10/12/1993
  • Issued: 07/04/1995
  • Est. Priority Date: 10/12/1993
  • Status: Expired due to Term
First Claim
Patent Images

1. In a document handler for sequentially feeding document sheets stacked in an input tray to be imaged at an imaging station and to an output tray for restacking the document sheets after they have been imaged, said document handler providing a document feeding path from said input tray to said imaging station and to said output tray, and said document feeding path further including a duplex document feeding path for returning duplex document sheets imaged on their first sides back to said imaging station for imaging their second sides, the improvement wherein:

  • said document feeding path includes a dual mode reversible output sheet feeder which in a first mode feeds out document sheets fully into said output tray, and, in a second mode, feeds a duplex document sheet substantially out over said output tray and then reverses to refeed the duplex document sheet into said document feeding path via said duplex feeding path;

    said input tray and said output tray are in a space saving closely superposed relationship defining a protective confining inverter chute space between said input and output trays within which the duplex document sheets are fed by said dual mode reversible output sheet feeder substantially out over said output tray and then reversed to feed the duplex document sheets into said duplex document feeding path;

    wherein said document feeding path comprises a highly compact "U" shaped document sheet path with its entrance adjacent said input tray and its exit adjacent said output tray;

    wherein said "U" shaped document sheet path is not substantially longer than the longest document sheet to be fed therethrough and has its entrance adjacent to said input tray and its exit at said output tray.

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