Double split recharge method and apparatus for color image formation
US5537198A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Dec 12, 1994 |
| Grant date | Jul 16, 1996 |
| Priority date | — |
| Expiry date | Dec 12, 2014 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G2215/017
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
In a multi-color imaging apparatus utilizing a recharge step between two image creation steps for recharging a charge retentive surface to a predetermined potential pursuant to forming the second of the two images, a first corona generating device recharges the charge retentive surface with a direct current to a higher absolute potential than a predetermined potential, a second corona generating device recharges the charge retentive surface with a direct current to a lower absolute potential than the predetermined potential, and then a third corona generating device recharges the surface, also with a direct current, to the predetermined potential. An electrical charge associated with the first image is prevented from reversing its original polarity after being recharged by the third corona generating device, thereby preventing the occurrence of under color splatter of the toner image.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.