Developing device, and image forming apparatus provided with the same
US9285713B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 7, 2015 |
| Grant date | Mar 15, 2016 |
| Priority date | — |
| Expiry date | Apr 7, 2035 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G2215/0863
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A developing device supplies a developer to a photosensitive drum, which has a cylindrical shape, and is rotatable around an axis thereof for forming an electrostatic latent image on the circumferential surface thereof. The developing device is provided with a developing roller. The developing roller is disposed to face the photosensitive drum, and has a cylindrical shape. The developing roller is rotatable around an axis thereof for carrying a developer on the circumferential surface thereof. The developing roller is provided with a small diameter portion. The small diameter portion is a part of the circumferential surface of the developing roller. The small diameter portion extends from an axial end of the developing roller axially inward by a predetermined length, and has an outer diameter smaller than an axially middle portion of the developing roller.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.