| 摘要 |
An improved recirculating document feeder wherein the initial topmost document sheet of the document sheet stack is separated from document sheets in such stack returned to such stack as document sheets are fed along the feed path. Such separation is provided by an elongated member supported between its ends for pivotal motion about two mutually perpendicular axes. The elongated member is pivotable about a first of such axes such that a first end portion thereof engages the initial topmost document sheet to follow the level of such sheet and pivotable about the second of such axes for movement to a remote location for subsequent repositioning of said first end portion on the initial topmost document sheet of such stack after such sheet is fed. A plurality of sensors located at predetermined levels relative to the document supporting tray detect the elongated member at such predetermined levels.
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