04638987 is referenced by 39 patents and cites 3 patents.

An automatic document feeder for use with a facsimile apparatus, a copier or the like includes a separator roller and feed rollers which are mounted on a common shaft and each is provided with a spring clutch. While the separator roller cooperates with a friction roller for separating documents from a stack on a tray one at a time, the feed rollers cooperate one with another feed roller, which is provided with a one-way clutch, for feeding the separated document. A reversible stepping motor is selectively driven in opposite directions depending upon the position of a document in a predetermined path, so that the coactive feed rollers selectively serve as drive rollers and follower rollers. The separator roller rotates in the same direction as the feed rollers which are coaxial therewith only when the latter serves as drive rollers.

Title
Automatic document feeder
Application Number
6/809192
Publication Number
4638987
Application Date
December 16, 1985
Publication Date
January 27, 1987
Inventor
Yasuo Sakurai
Atsugi
JP
Agent
Oblon Fisher Spivak McClelland & Maier
Assignee
Ricoh Company
JP
IPC
B65H 7/02
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