Patterned developing roller
US8155571B2 · kind B2 · utility
0Cited by
13References
38Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 25, 2008 |
| Grant date | Apr 10, 2012 |
| Priority date | — |
| Expiry date | Aug 8, 2029 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G15/0928
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A developing roller for providing a magnetic brush for a printer or copier has a substantially cylindrical outer surface. The outer surface includes a regular or irregular array of a number of isolated areas, each isolated area being provided by a recess in the outer surface. Each recess is completely surrounded on all sides and isolated from any neighbouring isolated area by separation zones being part of the substantially cylindrical outer surface.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.