Developing apparatus and process cartridge having the same
US4931838A · kind A · utility
59Cited by
3References
42Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 23, 1989 |
| Grant date | Jun 5, 1990 |
| Priority date | — |
| Expiry date | Feb 23, 2009 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S222/01
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A second chamber containing a developer and a first chamber within which a developing roller for applying the developer to an image bearing member is arranged are partitioned by a flexible film. The second chamber includes a developer conveying member by which the developer is conveyed into the first chamber through an opening formed in the flexible film. The opening is formed by tearing the flexible film by means of a tear tape.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.