Image forming apparatus having magnification capabilities with c

Details Image forming apparatus having magnification capabilities with c Image forming apparatus having magnification capabilities with c

1990-06-05

1991-12-10

Pendegrass, Joan H.

Photocopying

Contact printing

Light boxes

355243, 355311, G03G 1504

Patent

active

050722590

ABSTRACT:
An image forming apparatus has as control unit which controls an image formation area on a photosensitive drum in accordance with original document size information detected by an original document size detector and magnification/reduction scale determined by a selected magnification/reduction mode. Unnecessary area other than a desired image formation area is discharged.

REFERENCES:
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patent: 3912387 (1975-10-01), Brooke
patent: 3967896 (1976-07-01), Looney et al.
patent: 3994723 (1976-11-01), Brooke
patent: 4173406 (1979-11-01), Oyama et al.
patent: 4236811 (1980-12-01), Hirose et al.
patent: 4338020 (1982-07-01), Yukawa et al.
patent: 4384785 (1983-05-01), Katoh et al.
patent: 4474453 (1984-10-01), Yanagawa et al.
patent: 4582417 (1986-04-01), Yagasaki et al.
IBM Technical Disclosure Bulletin, vol. 19, No. 2, Jul. 1976, Underhill, "Erase Lamp Control", pp. 393-394, 355/7.

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