Method for improving performance of barium and strontium ferrite carrier particles with acid wash
US5096797A · kind A · utility
5Cited by
11References
6Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 14, 1991 |
| Grant date | Mar 17, 1992 |
| Priority date | — |
| Expiry date | Jan 14, 2011 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G9/1075
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
In the electrographic developer compositions, the performance of strontium ferrite or barium ferrite carrier particles is improved by treating the carrier particles with an aqueous acid solution. This treatment reduces the tendency toward early life dusting of strontium or barium ferrites and prevents contamination of the toner particles.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.