Image forming apparatus
US9411259B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 9, 2015 |
| Grant date | Aug 9, 2016 |
| Priority date | — |
| Expiry date | Mar 9, 2035 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G2215/0132
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An image forming apparatus includes a developer bearing member, a developing bias application unit, a developer supply member, and a supply bias application unit that applies a supply bias to the developer supply member. In a predetermined period before a start of image formation during an image forming operation for an image formed on one recording material, the supply bias application unit applies a supply bias of which the magnitude of an absolute value is smaller than that of a developing bias, to the developer supply member. In a period between the start of image formation and an end of image formation during the image forming operation, the supply bias application unit applies a supply bias to the developer supply member so that a difference in the magnitude of the absolute value from the supply bias in the predetermined period before the start of image formation increases gradually.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.