Field lens for an electrophotographic printing machine

Details Field lens for an electrophotographic printing machine Field lens for an electrophotographic printing machine

1976-05-17

1978-09-05

Moses, Richard L.

Photocopying

Including fiber optics

355 75, G03G 1501

Patent

active

041115406

ABSTRACT:
An electrophotographic printing machine in which the platen thereof is a field lens. In the opaque reproduction mode, the original document is positioned on the platen in a light receiving relationship with the illumination system. The presence of the field lens does not interfere with the opaque copying mode of the printing machine. When a transparency is being reproduced, the light image of the transparency is projected through the platen. The field lens converges the diverging light rays of the transparency light image.

REFERENCES:
patent: 3439983 (1969-04-01), Blow
patent: 3813161 (1974-05-01), Curtis
patent: 3936173 (1976-02-01), Kidd et al.
patent: 4027962 (1977-06-01), Mailloux

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