DEVELOPING DEVICE AND PROCESS CARTRIDGE COMPRISING FIRST AND SECOND SEALING MEMBERS AND ELECTROPHOTOGRAPHIC IMAGE FORMING APPARATUS COMPRISING A DEVELOPING DEVICE COMPRISING FIRST AND SECOND SEALING MEMBERS
US6823153B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 22, 2003 |
| Grant date | Nov 23, 2004 |
| Priority date | — |
| Expiry date | Jan 22, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G2215/0822
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A developing device includes a developing member for developing the latent image, an exposure optical path, a developer containing portion, a vent port for allowing air in the inside of the developer containing portion to pass therethrough, a first sheet member for preventing scattering of the developer into the exposure optical path, disposed between the exposure optical path and the developing member and contacted with an electrophotographic photosensitive member, a first sealing member for preventing leaking of the developer from the developer containing portion, contacted with one end portion of the electrophotographic photosensitive member in its longitudinal direction, and a second sealing member for preventing leaking of the developer from the developer containing portion, contacted with another end portion of the electrophotographic photosensitive member in its longitudinal direction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.