Charge removal process in image forming apparatus
US10691039B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 21, 2018 |
| Grant date | Jun 23, 2020 |
| Priority date | — |
| Expiry date | Sep 29, 2038 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G21/0011
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An image forming apparatus executes reverse charging, toner-supply suspension, second exposure, and second charging, while a photosensitive member rotates at least a full turn. In the reverse charging, a charger charges a portion of a circumferential surface of the photosensitive member to a specified polarity. In the toner-supply suspension, before the portion, which has been charged to the second polarity in the reverse charging, of the circumferential surface of the photosensitive member passes a position at which the developer from the developing unit is configured to initially adhered to the circumferential surface, a developing unit stops supplying developer to the circumferential surface. In the second exposure, an exposure device exposes the portion, which has been charged to the specified polarity in the reverse charging, of the circumferential surface. In the second charging the charger charges the portion, which has been exposed in the second exposure, of the circumferential surface.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.