Simultaneous charging and exposure for pictorial quality
US5008707A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 5, 1989 |
| Grant date | Apr 16, 1991 |
| Priority date | — |
| Expiry date | Sep 5, 2009 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G15/043
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Apparatus and method for forming an electrostatic latent image on an imaging member having a photoconductive insulating layer has a voltage sensitive corona charging device with a corona generating electrode and a control electrode positioned in charging relationship to the photoconductive insulating layer, means to energize the charging device to charge the photoconductive insulating layer to a first level comprising means to apply a corona generating voltage to the corona generating electrode and to apply a control voltage of a first magnitude to the control electrode, and means to expose the photoconductive insulating layer to an image pattern simultaneously while the charging device is energized.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.