Developing device with image supporting member and developer supporting member disposed in specific arrangement, and image forming apparatus
US8055169B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | May 14, 2008 |
| Grant date | Nov 8, 2011 |
| Priority date | — |
| Expiry date | Nov 11, 2029 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G15/0818
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A developing device includes a developer supporting member abutting against an image supporting member for developing a static latent image on the image supporting member. In a state that a film member is disposed between the image supporting member and the developer supporting member, it is arranged such that the film member is extended with a tensional force N (N) when the image supporting member and the developer supporting member rotate. The tensional force N has a relationship as follows:(A×B×exp(0.32×F−16))/N≦11.6where A (mm) is a difference between an outer diameter of a center portion of the developer supporting member and an outer diameter of an end portion of the developer supporting member; B (mm) is a wobble amount of the end portion of the developer supporting member; and F (degree) is an Asker C hardness of the developer supporting member.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.