Process cartridge, image forming apparatus, image forming method
US10146150B2 · kind B2 · utility
0Cited by
3References
11Claims
0Family size
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Key dates
| Filing date | May 25, 2017 |
| Grant date | Dec 4, 2018 |
| Priority date | — |
| Expiry date | May 25, 2037 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G15/047
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
At least one partial measurement region is set in the longitudinal direction in a printable region of a photosensitive drum. After the photosensitive drum has been charged to a constant potential with a charging roller, different potentials are set in the partial measurement region and a region excluding the partial measurement region with a laser scanner, partial discharge information of the partial measurement region is detected by a discharge information detection unit, and a bias voltage in image formation that is applied to the charging roller is corrected on the basis of the value of the partial discharge information.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.