Two component electrophotographic developer
US4880719A · kind A · utility
59Cited by
3References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 29, 1988 |
| Grant date | Nov 14, 1989 |
| Priority date | — |
| Expiry date | Jun 29, 2008 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G9/10882
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An electrophotographic two-component system developer is described, comprising a positive charging toner and a negative charging carrier of the dispersed magnetic powder type, wherein a hydrophilic alumina particle is adhered onto the surface of said positive charging toner and a negative charging carrier has a volume average particle diameter of from 30 to 80 .mu.m. The developer provides reduced toner cloud upon development processing and provides toner images free from fog.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.