Systems and methods for momentum controlled scavengeless jumping development in electrophotographic marking devices
US7580648B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 27, 2007 |
| Grant date | Aug 25, 2009 |
| Priority date | — |
| Expiry date | Jan 22, 2028 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G2215/0619
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
To generate a toner cloud in a development system, a first potential is applied to a donor roll for a first pulse time to project toner from the donor roll toward a photoreceptor; a second potential is applied to the donor roll for a second pulse time to slow the speed at which the toner is projected toward the photoreceptor; a third potential is applied to the donor roll for a third pulse time to hold toner between the donor roll and the photoreceptor; and a fourth potential is applied to the donor roll for a fourth pulse time to urge undeveloped toner to the surface of the donor roll. Voltages may also be applied for selectivity removing toner from a donor roll.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.