Sheet feeding or delivering – Feeding – Separators
Patent
1986-03-19
1987-12-29
Schacher, Richard A.
Sheet feeding or delivering
Feeding
Separators
B65H 352
Patent
active
047155973
ABSTRACT:
An automatic document feeder includes a separating roller disposed adjacent to one end of a table on which a stack of documents to be fed is placed for separating the bottom-most document from the stack. The feeder also includes a feed roller which is fixedly mounted on a first shaft on which the separating roller is fixedly mounted. A friction roller is rotatably supported as being pressed against the separating roller and a transport roller is rotatably provided as being pressed against the feed roller. The separating and feed rollers are provided coaxially, but they are comprised of different materials to provide a stable document feeding operation. The separating roller is preferably comprised of a rubber material having a hardness ranging from 25 to 30 degrees, and the feed roller is preferably comprised of a chloroprene material having a hardness on the order of 60 degrees. If the separating roller is split into two sub-rollers spaced apart axially, the feeder is preferably provided with an auxiliary roller in the space between the sub-rollers and coaxially with the transport roller so as to provide a smooth feed operation irrespective of the thickness of the document.
REFERENCES:
patent: 2214752 (1940-09-01), Pierce
patent: 4494747 (1985-01-01), Graef
patent: 4496145 (1985-01-01), Fukui
patent: 4515358 (1985-05-01), Fukui
patent: 4560154 (1985-12-01), Nogi
Ricoh & Company, Ltd.
Schacher Richard A,.
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