Image forming apparatus with measuring technique
US7403723B2 · kind B2 · utility
3Cited by
1References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 27, 2006 |
| Grant date | Jul 22, 2008 |
| Priority date | — |
| Expiry date | Jul 3, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G15/553
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An image forming apparatus including a photoreceptor that rotates, a charging member provided in contact with or in close proximity of the photoreceptor to charge the photoreceptor, a charge amount detecting portion that accumulates current flowing across the photoreceptor to obtain a charge amount of the photoreceptor, while the current is being applied from the charging member until a voltage on a surface of the photoreceptor substantially corresponds to the voltage applied by the charging member, and a controller that calculates a film thickness of the photoreceptor based on the charge amount.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.