Automatic document feeder for electrophotographic copying machin

Details Automatic document feeder for electrophotographic copying machin Automatic document feeder for electrophotographic copying machin

1989-01-19

1990-03-20

Grimley, A. T.

Photocopying

Contact printing

Light boxes

355207, 355308, 271275, G03G 2100

Patent

active

049105523

ABSTRACT:
An electrophotographic copying machine of a type having a drum for supporting a document to be copied therearound and being provided with an automatic document feeder adapted to carry out a preliminary copying operation for testing includes a timer for counting up a predetermined period of time after the completion of preliminary copying, or is alternatively so programmed that a choice can be made after a preliminary copying operation whether a document remaining in the copying position should be ejected. Jamming of documents and injury to the copying machine can be avoided effectively thereby.

REFERENCES:
patent: 3936180 (1976-02-01), Willard et al.
patent: 3972522 (1976-08-01), Wallace
patent: 4281919 (1981-08-01), Nomura et al.
patent: 4448515 (1984-05-01), Ishikawa
patent: 4620782 (1986-11-01), Kurando et al.
patent: 4634113 (1987-01-01), Matsuda et al.
patent: 4657375 (1987-04-01), Watanabe et al.
patent: 4803519 (1989-02-01), Asada et al.

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