Current monitoring to detect photoreceptor scratches
US8331809B2 · kind B2 · utility
1Cited by
6References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 9, 2010 |
| Grant date | Dec 11, 2012 |
| Priority date | — |
| Expiry date | Jul 5, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G21/0035
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A method monitors an electric current supplied to an electrostatic brush within a printing device. The electrostatic brush contacts and cleans a photoreceptor surface within the printing device. The method records a current spike pattern of when the electric current exceeds a first current threshold during the monitoring; however, the method will stop operations of the printing device if the electric current exceeds a second current threshold that is greater than the first current threshold. Further, the method can determine whether a scratch is present on the photoreceptor surface based on the current spike pattern.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.