Image forming apparatus having first and second peripheral velocity ratios
US11086249B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 25, 2020 |
| Grant date | Aug 10, 2021 |
| Priority date | — |
| Expiry date | Feb 25, 2040 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G15/5037
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An image forming apparatus includes a motor configured to rotationally drive an image bearing roller and a developer bearing roller at a first peripheral velocity ratio and a second peripheral velocity ratio which is larger than the first peripheral velocity ratio. A development contrast formed between a developing bias to the developer bearing roller and a light-part potential formed on the image bearing roller in a case where a development operation is performed at the second peripheral velocity ratio is larger than a development contrast formed between the developing bias to the developer bearing roller and the light-part potential formed on the image bearing roller in a case where the development operation is performed at the first peripheral velocity ratio.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.