Develop roller, develop unit, process cartridge, and image forming apparatus
US8731444B2 · kind B2 · utility
1Cited by
6References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 21, 2011 |
| Grant date | May 20, 2014 |
| Priority date | — |
| Expiry date | Dec 1, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G2215/0634
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A develop roller includes a magnet roller, and a develop sleeve containing the magnet roller and comprising a plurality of depressions in an elliptic shape regularly arranged with an interval in a longitudinal direction on a surface onto which developer is attracted by a magnetic force of the magnet roller, wherein the depressions are arranged such that a longitudinal direction of the depressions is intersected with the longitudinal direction of the develop sleeve, and a downstream side of the depressions are formed to be deeper than an upstream side in a rotary direction of the develop sleeve.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.