Developing device and image forming apparatus
US8965252B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jun 7, 2012 |
| Grant date | Feb 24, 2015 |
| Priority date | — |
| Expiry date | Jan 8, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G15/0921
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A developing device includes a first developing roller including a first transport member that transports magnetic developer by rotating while being close to a latent-image carrier rotating in one direction and a first magnet member, a second developing roller including a second transport member that transports the developer by rotating while being close to the latent-image carrier at a position on a downstream side of the first developing roller in the one direction, and a second magnet member, and a regulation member that regulates transport amounts of the developer distributed to the first and second developing rollers to required transport amounts, and opposes the developing rollers with predetermined distances therebetween. The first and second developing rollers are spaced from each other. The regulation member is movably supported in an area closer to the latent-image carrier than a closest position between the first and second developing rollers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.