Magnetic carrier cores coated with perfluorinated Werner complexes and developers containing the same
US5124223A · kind A · utility
2Cited by
2References
8Claims
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Key dates
| Filing date | Nov 5, 1990 |
| Grant date | Jun 23, 1992 |
| Priority date | — |
| Expiry date | Nov 5, 2010 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G9/1138
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Magnetic carrier core particles are provided which are coated with a Werner complex. The coating is readily accomplished by dispersing magnetic core particles in a solution of the Werner type complex. A hydroxyl group containing polymer can also be present which functions to enhance coating thickness. The Werner complexes are highly reactive, bond strongly to hydroxyl groups, and absorb readily into the core particles. Coated particles display excellent useful life capability and developer compositions containing such coated cores produce high resolution developed images.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.