Light beam printer

Details Light beam printer Light beam printer

1982-11-30

1984-09-04

Prescott, A. C.

Photocopying

Including fiber optics

355 1, G03G 1500

Patent

active

044694300

ABSTRACT:
In a laser beam printer for scanning a surface of a uniformly charged photoconductive photosensitive drum by a laser beam to form an electrostatic latent image and developing the electrostatic latent image by fine particles of toner, a dust-proof box is provided at a laser beam emitting port of an exposure optical system to prevent the toner from entering into the exposure optical system and contaminating the same.

REFERENCES:
patent: 3872462 (1975-03-01), Lemelson
patent: 4122462 (1978-10-01), Hirayama et al.
patent: 4169275 (1979-09-01), Gunning
patent: 4277160 (1981-07-01), Yamada
patent: 4351005 (1982-09-01), Imai et al.

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