Method and apparatus using a biased transfer roll as a dynamic electrostatic voltmeter for system diagnostics and closed loop process controls
US6611665B2 · kind B2 · utility
16Cited by
15References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 18, 2002 |
| Grant date | Aug 26, 2003 |
| Priority date | — |
| Expiry date | Mar 22, 2022 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G2215/0119
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A system and method for controlling a xerographic printer includes a subsystem for carrying out a function of the xerographic printer and affecting an electric field of a component. The system and method further include a bias transfer roll voltage operated in a constant current mode, and a voltage evaluator coupled to the biased transfer roll for measuring a change in a level of voltage of the bias transfer roll as the component affected by the subsystem passes through a nip region near the bias transfer roll for determining operability of the subsystem.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.