System and method for detecting bias transfer roll positions using resistance detection
US9014585B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 15, 2013 |
| Grant date | Apr 21, 2015 |
| Priority date | — |
| Expiry date | Mar 22, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G2215/0193
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A system and method is provided for determining the location of one or more biased transfer rolls relative to associated photoreceptors in a printer. The one or more biased transfer rolls can be moved into contact with an intermediate transfer surface bringing the surface into contact with associated photoreceptors to form a closed biased transfer roll image transfer nip for transferring an image from the photoreceptor to the intermediate transfer surface. The open or closed condition of the biased transfer roll image transfer nip is determined by applying a constant current to the biased transfer roll and evaluating a voltage at the biased transfer roll. The open or closed condition of different image transfer nips can be determined in a similar manner. A plurality of biased transfer rolls can be ganged together for simultaneous movement with respect to associated photoreceptors to form a plurality of image transfer nips, the open and closed condition which can also be determined.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.