Optical exposure unit for electrophotographic printing device

Details Optical exposure unit for electrophotographic printing device Optical exposure unit for electrophotographic printing device

1981-06-24

1984-03-06

Moses, R. L.

Photocopying

Including fiber optics

355 3R, 355 70, 354 5, 346107R, G03B 2700, G03G 1500

Patent

active

044350643

ABSTRACT:
An electrophotographic printing device is provided with an exposure unit comprising light-emitting diodes which are light sources and means for transmitting the light beams emitted from the light-emitting diodes and converging or focusing them like converging lenses, whereby electrostatic latent images of characters and the like are formed on the surface of a photosensitive member.

REFERENCES:
patent: 3824604 (1974-07-01), Stein
patent: 3836917 (1974-09-01), Mee
patent: 4090206 (1978-05-01), Pfeifer et al.
patent: 4096486 (1978-06-01), Pfeifer et al.
patent: 4107687 (1978-08-01), Pfeifer et al.
patent: 4279483 (1981-07-01), England et al.
patent: 4297022 (1981-10-01), Lester
patent: 4318597 (1982-03-01), Kotani et al.
patent: 4364064 (1982-12-01), Baues

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