Xerographic copying apparatus having means to reduce contaminati

Details Xerographic copying apparatus having means to reduce contaminati Xerographic copying apparatus having means to reduce contaminati

1983-09-20

1985-07-23

Moses, R. L.

Photocopying

Including fiber optics

355 30, G03G 1500

Patent

active

045305897

ABSTRACT:
Xerographic copying apparatus includes an optical system for forming an optical image of an object to be copied on an electrically charged photoconductive surface, the optical image forming a corresponding electrostatic latent image on the surface, and means to develop the latent image with a particulate toner material. At least part of the optical system is housed in a substantially closed compartment, and imaging rays are directed out of the compartment in a generally horizontal direction through a substantially vertical transparent window in the compartment. A blower is provided to blow a curtain of air generally downwardly over the surface of the window outside the compartment, and to blow air into the optics compartment so as to cause a net outflow of air from the optics compartment.

REFERENCES:
patent: T940022 (1975-11-01), Rodda
patent: 3914046 (1975-10-01), Tanaka et al.
patent: 4106057 (1978-08-01), Van Vroenhoven
patent: 4178092 (1979-12-01), Yamamoto et al.

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