Selective charge removal system for copier
US4843427A · kind A · utility
7Cited by
3References
3Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 5, 1988 |
| Grant date | Jun 27, 1989 |
| Priority date | — |
| Expiry date | Jan 5, 2008 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G15/047
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A selective charge removal system for a copier uses a transparent electrochromic display with many segments or dots thereon and a back-lighting unit such that only a specified area which is precisely defined on the photosensitive body of the copier is exposed to the light from the back-lighting unit. These segments or dots are driven to an intermediate color state during a wait period before a copying operation of the copier is started such that the color conditions of the electrochromic display can be changed quickly.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.