Preparation of magnetic carrier particles
US5272039A · kind A · utility
13Cited by
17References
8Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 4, 1992 |
| Grant date | Dec 21, 1993 |
| Priority date | — |
| Expiry date | May 4, 2012 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G9/1131
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Electrostatographic carrier particles with improved conductivity and stability are prepared from magnetic stainless steel particles. The particles are treated by submersion in an aqueous oxalic acid solution. The passivated stainless steel carrier particles, preferably after being first coated with a resin, may then be mixed with toner powder for electrographic dry development.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.