Copy ratio setting apparatus

Details Copy ratio setting apparatus Copy ratio setting apparatus

1989-04-21

1993-04-27

Grimley, A. T.

Photocopying

Contact printing

Light boxes

355 55, 355309, G03G 1504

Patent

active

052066894

ABSTRACT:
An image forming apparatus provides for the scanning of an original document when placed on a document table. The scanning operation moves from a predetermined position along a predetermined scanning direction. A specifying arrangement for specifying an original document area is provided which is movable along one side of the document table along with a second specifying arrangement for specifying a copy area which is also movable in parallel with the side of the document table. Both specifying arrangements include magnetic members. A detector is incorporated with the scanner so as to detect positions of the specifying arrangements. Signals are generated when the detector detects the magnetic members of the specifying arrangements during the scanning operation. A copy ratio is then computed based on a comparison of the signals which have been detected so that an image is formed which corresponds to the document and the computed copy ratio.

REFERENCES:
patent: 3914043 (1975-10-01), McVeigh
patent: 4277163 (1981-07-01), Ikesue et al.
patent: 4505579 (1985-03-01), Furuichi
patent: 4669858 (1987-06-01), Ito et al.
patent: 4745443 (1988-05-01), Adachi et al.
patent: 4752809 (1988-01-01), Ito

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