Carrier coating compositions of butadiene-acrylonitrile rubber and polyurethane
US4374192A · kind A · utility
7Cited by
3References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 25, 1982 |
| Grant date | Feb 15, 1983 |
| Priority date | — |
| Expiry date | Feb 25, 2002 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/2998
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Electrophotographic developer compositions containing carrier, toner and special purpose additives such as flow promoters, dry lubricants and the like are prepared by coating carrier particles with a coating selected so that the triboelectric relationship between the surface of the carrier and the surface of the additive is substantially zero.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.