Variable magnification image formation apparatus

Details Variable magnification image formation apparatus Variable magnification image formation apparatus

1984-07-05

1985-07-30

Gonzales, John

Photocopying

Projection printing and copying cameras

Focus or magnification control

350429, G03B 2734

Patent

active

045318310

ABSTRACT:
Disclosed is a variable magnification image formation apparatus wherein an image of an original is formed on a photosensitive member by the use of a zoom lens assembly of the type in which the focal length is changed by rotating a zoom ring about the optical axis and wherein the zoom ring is rotated by wire in synchronism with movement of the zoom lens assembly.

REFERENCES:
patent: 3582203 (1971-06-01), Cox
patent: 3597065 (1971-08-01), Radulet
patent: 4046467 (1977-09-01), Laskowski et al.
patent: 4120578 (1978-10-01), Danials et al.
patent: 4322159 (1980-09-01), Takahashi et al.
patent: 4420248 (1983-12-01), Ogawa et al.

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