Photoreceptor edge erase system for tri-level xerography

Details Photoreceptor edge erase system for tri-level xerography Photoreceptor edge erase system for tri-level xerography

1989-12-26

1991-01-08

Moses, R. L.

Photocopying

Contact printing

Light boxes

355328, 355218, G03G 1500

Patent

active

049840215

ABSTRACT:
The prevention of photoreceptor edge development by a discharged image area development system is accomplished by the provison of a photoreceptor charging device which uniformly charges the photoreceptor across its entire width, including the edges thereof outside of the image areas. Thus, when the charged edge areas pass through a discharged-area development housing edge development is precluded. When discharged image area development is used in combination with subsequent charged-image area development as in the case of tri-level, highlight color imaging, photoreceptor edge development is precluded by discharging the edges subsequent to discharged-area development and prior to charged area development.

REFERENCES:
patent: 4078929 (1978-03-01), Sundlach
patent: 4764443 (1988-08-01), Matkan
patent: 4847657 (1989-07-01), Hanada et al.

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