Exposure system for electrophotographic copier

Details Exposure system for electrophotographic copier Exposure system for electrophotographic copier

1976-10-29

1978-08-29

Braun, Fred L.

Photocopying

Projection printing and copying cameras

Illumination systems or details

355 3R, 355 77, G03B 2754, G03B 2732, G03G 1500

Patent

active

041100409

ABSTRACT:
An exposure system for electrophotographic copiers, by which large originals such as engineering drawings can be exposed at high light intensity yet with the space requirement held to a minimum. The exposure is obtained by the provision of at least one tubular light source disposed parallel to a slit exposure zone at the side of that zone facing away from the image projection (optical) system and, at the side thereof facing toward the optical system, of tubular light sources disposed parallel to said zone in two equal groups arranged opposite to one another and adjacent to the reflection object space of the exposure system. The lamps of each of the two groups are closely spaced and have disposed closely about them a diffusely reflecting wall of a form generated by a straight line moving parallel to the lamps. The wall extends at one end at least to the vicinity of the exposure zone and at its opposite end extends at least to the reflection object space but not farther than the object space of the exposure system.

REFERENCES:
patent: 3044351 (1962-07-01), Patterson
patent: 3094909 (1963-06-01), Szekeres
patent: 3207050 (1965-09-01), Limberger
patent: 3330180 (1967-07-01), Ferguson et al.
patent: 3498714 (1970-03-01), Elmer
patent: 3709603 (1973-01-01), Furuichi

Affiliated with

Also associated with

Rating

Exposure system for electrophotographic copier does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Exposure system for electrophotographic copier, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Exposure system for electrophotographic copier will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1630378