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IP.com Disclosure Number: IPCOM000024712D
Original Publication Date: 1981-Oct-31
Included in the Prior Art Database: 2004-Apr-02

Publishing Venue

Xerox Disclosure Journal


In a xerographic copier, a semi-automatic document feeder 1 for feeding document originals from a stack 2 of documents to an imaging platen. The document feeder 1 comprises a foam drive roll 3, driven by a flexible shaft 4, coupled to a source of rotational energy (not shown). In operation, the user stacks the series of document originals to be imaged in a position beneath the foam roller 3 and overlapping a retard pad 5 mounted to a document support surface 6. The roller 3 drives the documents in the stack over the retard pad 5 and a slight document shingling effect occurs. The top document separates from the stack and is registered against a registration guide 6 during each feed cycle. At the completion of each feed, the roll 3 comes into contact with the next available sheet and awaits a feed signal which energizes the source of rotational energy, driving the shaft and therefore, the roll 3.