Image-forming apparatus with a document-feeding device

Details Image-forming apparatus with a document-feeding device Image-forming apparatus with a document-feeding device

1984-11-14

1987-06-23

Prescott, A. C.

Photocopying

Projection printing and copying cameras

Combined with or convertible to a contact printer

353 3SH, 353 14R, G03G 1500

Patent

active

046748628

ABSTRACT:
A copying apparatus which prevents a document manually placed on the document-support plate from being damaged by the subsequent automatic feeding of other documents to the document-support plate. The apparatus includes a document feeder for feeding the automatically-fed documents to a copying position on the document-support plate. The document feeder is rotatable between a first position where it is adjacent the document-support plate, and a second position where it is not adjacent the document-support plate. Control means are provided for preventing the document feeder from providing an automatically-fed document to the copying position when the last copying operation was performed on a manually positioned document. The controller includes a flag memory which stores a first signal when a manually positioned document has been copied, and a second signal when an automatically-fed document has been copied. The document feeder is prevented from feeding documents so long as the first signal is stored in the flag memory.

REFERENCES:
patent: 3945728 (1976-03-01), Crandell
patent: 4372673 (1983-02-01), Tomosada et al.
patent: 4421404 (1983-12-01), Conly
patent: 4433909 (1984-02-01), Goes in Center et al.
patent: 4523752 (1985-06-01), Kigawa et al.

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