Developer carrier of a developing device and a method of producing the same
US5172169A · kind A · utility
29Cited by
20References
53Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 9, 1991 |
| Grant date | Dec 15, 1992 |
| Priority date | — |
| Expiry date | Apr 9, 2011 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G15/0818
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A developer carrier constituting a developing roller which carries a developer on the surface thereof where numerous microfields are developed. The developing roller has a conductive base and a plurality of different kinds of substances each having a particular charging characteristic. The different kinds of substances show themselves on the surface of the base in a regular or irregular pattern, and each is charged to a particular polarity.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.