Charging potential control means for electrophotographic copiers

Photocopying – Projection printing and copying cameras – Combined with or convertible to a contact printer

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355 3CH, 355 6, G03G 1500, G03G 1502

Patent

active

043679447

ABSTRACT:
In a copying apparatus having a photosensitive member such as a drum, good reproductivity and image density results from applying a proper charging potential to the photosensitive substance on the drum. The optimum charging potential for each drum can be predetermined and a code or indicia representative of such optimum potential may be attached or otherwise appended to the drum. This code is read by a suitable sensor which in turn controls the charging potential applied to the drum.

REFERENCES:
patent: 2890343 (1959-06-01), Bolton
patent: 3944354 (1976-03-01), Benwood et al.
patent: 3951541 (1976-04-01), Kuehnle
patent: 4105321 (1978-08-01), Urso
patent: 4312589 (1982-01-01), Brannan et al.

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