Xerographic development system where a gap between a donor member and a photoreceptor is estimated
US6895194B2 · kind B2 · utility
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8References
12Claims
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Key dates
| Filing date | Aug 28, 2003 |
| Grant date | May 17, 2005 |
| Priority date | — |
| Expiry date | Aug 28, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G15/0928
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
In a hybrid jumping (HJD) or hybrid scavengeless (HSD) development station used in xerography, a control system avoids arcing conditions in a gap between a donor member and an image receptor. In a set-up operation, a series of test patches are produced while incrementing the AC amplitude in the gap. A change in reflectivity of the patches as a function of the AC amplitude in the gap is measured and the actual width of the gap is thus estimated. An accurate estimate of the gap width can then be used in a control algorithm.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.