Variable magnification image forming apparatus

Details Variable magnification image forming apparatus Variable magnification image forming apparatus

1983-06-20

1985-06-04

Grimley, A. T.

Photocopying

Including fiber optics

355 57, G03G 1500

Patent

active

045211000

ABSTRACT:
Variable magnification copying apparatus wherein the optical element for forming an image of the original on a photosensitive member is displaceable for magnification change. The amount of displacement is controlled on the basis of the count of pulses generated by the pulse generator. The optical element is, as desired, restored to a reference position, and then moved to an object position by counting a predetermined number of pulses.

REFERENCES:
patent: 3873189 (1975-03-01), Whitaker et al.
patent: 4077710 (1978-03-01), Ward et al.
patent: 4080062 (1978-03-01), Torigari et al.
patent: 4322159 (1982-03-01), Takahashi et al.
patent: 4323308 (1982-04-01), Kitajima et al.
patent: 4351606 (1982-09-01), Franko
patent: 4353634 (1982-10-01), Himmelsbach

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