Developing device, developing cartridge, process cartridge and image forming apparatus
US8483589B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 18, 2010 |
| Grant date | Jul 9, 2013 |
| Priority date | — |
| Expiry date | Sep 27, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G15/0808
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A developing device is provided that includes a developing container, a developing roller, a developer supplying roller, a sheet member, a communication hole, and a filter member. The communication hole is provided so as to be connected to an enclosed space defined by an inner wall of the developing container defining a smaller one of spaces provided by dividing the developing container by a plane including a rotation axis of the developer supplying roller and a rotational axis of the developing roller, a phantom plane which is included in the plane and extends from a surface of the developer supplying roller to the inner wall of the developer container, the sheet member, a surface of the developing roller, and a surface of the developer supplying roller.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.