Electrophotographic copier having movable optical elements for c

Details Electrophotographic copier having movable optical elements for c Electrophotographic copier having movable optical elements for c

1982-05-27

1983-12-13

Moses, R. L.

Photocopying

Projection printing and copying cameras

Combined with or convertible to a contact printer

355 1, 355 57, 355 60, G03G 1500

Patent

active

044202458

ABSTRACT:
An electrophotographic copier for forming a copy of a document with a unit image magnification and a modified magnification, i.e. reduced or enlarged magnification is disclosed. A converging optical fiber array for forming a life-size image of a document is movably arranged with respect to an optical axis and reflection mirrors of a reduced-size image projecting optical system are secured to the converging optical fiber array so as to be moved together with the array. Remaining optical elements such as reflection mirrors and a projection lens are arranged fixedly. When the converging optical fiber array is brought into the optical axis, the life-size image of document is projected onto a photosensitive drum and when the converging optical fiber array is removed from the optical axis, the reflection mirrors of the reduced-size image projecting optical system are brought into the optical axis and the reduced image of document is projected onto the photosensitive drum.

REFERENCES:
patent: 3985438 (1976-10-01), Kurita
patent: 4129373 (1978-12-01), Ogura et al.
patent: 4370055 (1983-01-01), Nishikawa

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