Copying method and apparatus

Details Copying method and apparatus Copying method and apparatus

1992-12-24

1994-05-31

Smith, Matthew S.

Photocopying

Contact printing

Light boxes

271 35, 271111, 271233, 271291, 271301, 355308, 355320, 355321, G03G 1500

Patent

active

053173724

ABSTRACT:
In a document feeder, documents are contained on a document rest in a stacked state. These documents are sequentially transported to a specified exposure region on a table glass member of a copying machine by a feeder and transporter and are then exposed. The documents are then discharged again onto the document rest. The documents are thereby circulated for copying. When the documents are small in number, the documents are not discharged until a copying operation of a necessary number of sheets is completed, and the documents are moved back and forth for exposure between a transport path of the feeder and the transporter. This design enables the time required for copying a small number of documents to be shortened.

REFERENCES:
patent: 3499710 (1970-03-01), Sahley
patent: 4179215 (1979-12-01), Hage
patent: 4553828 (1985-11-01), Burger et al.
patent: 4739983 (1988-04-01), Ide et al.
patent: 4825248 (1989-04-01), Honjo et al.
patent: 5120039 (1992-06-01), Yamada
patent: 5203554 (1993-04-01), Suzuki et al.
IBM Technical Disclosure Bulletin, vol. 18, No. 2, Jul. 1975, "Dynamic Sheet Length Sensing", W. E. Church, J. D. Froula, (Copy in 355/311).

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