Variable magnification copying apparatus

Details Variable magnification copying apparatus Variable magnification copying apparatus

1986-07-18

1987-12-01

Prescott, A. C.

Photocopying

Including fiber optics

355 3R, 355 14R, 355 14SH, 355 14E, 355 56, G03G 1500

Patent

active

047100184

ABSTRACT:
A variable magnification copying apparatus arranged to determine a scanning amount having a leading edge of an original document as a reference point, based on a copy paper size and a copying magnification as selected so as to control positions of a zoom lens assembly from the copying magnification, and characterized in that there are provided an original document trailing edge indicating plate disposed on a copy lamp unit for scanning the original document, and a device for displacing the original document trailing edge indicating plate together with the copy lamp unit based on the value calculated from the copy paper size and copying magnification, so as to set a terminal point of the displacement as a home position of the copy lamp unit.

REFERENCES:
patent: 3806241 (1974-04-01), Gregg et al.
patent: 4277163 (1981-07-01), Ikesue et al.
patent: 4552450 (1985-11-01), Tomosapa et al.
patent: 4575227 (1986-03-01), Ito et al.

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