Developing unit having developing roller with specific side surface roughness
US6094554A · kind A · utility
6Cited by
21References
1Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 9, 1999 |
| Grant date | Jul 25, 2000 |
| Priority date | — |
| Expiry date | Aug 9, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G2215/0861
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A developing unit of the present invention includes a case which accommodates toner containing pigment, a developing roller, a supply roller having chamfered ends and formed of an elastic member arranged to be pressed against a surface of the developing roller in such a manner as to supply toner to the surface of the developing roller. The side surfaces of the developing roller have a surface roughness of 0.5 .mu.m or smaller in Rmax.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.