Photoreceptor edge erase system for tri-level xerography
US4984021A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Dec 26, 1989 |
| Grant date | Jan 8, 1991 |
| Priority date | — |
| Expiry date | Dec 26, 2009 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G15/0163
- WIPO fieldOptics
- WIPO sectorInstruments
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.