Image forming apparatus

Details Image forming apparatus Image forming apparatus

1985-09-18

1987-07-07

Grimley, Arthur T.

Photocopying

Including fiber optics

355 14D, 355 14TR, G03G 1500

Patent

active

046783148

ABSTRACT:
A microfilm reader printer has a reader unit which projects a microfilm image onto a screen and a printer unit which reproduces copies of the microfilm image. The printer unit has an optical device for forming an electrostatic image on a photoreceptor by exposing the microfilm image onto the photoreceptor and a developing device for visualizing the electrostatic latent image formed on the photoreceptor. The developing device has a first developing unit for achieving direct development, a second developing unit for achieving reversal development and driving device for activating one of the developing units. A positive copy may be reproduced from both positive and negative types of a microfilm by selectively operating one of the developing units.

REFERENCES:
patent: 3674354 (1972-07-01), Artaud et al.
patent: 4341463 (1982-07-01), Kashiwagi et al.

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