Toner for a two-component-type magnetic developing agent having excellent spent resistance
US5500319A · kind A · utility
5Cited by
3References
21Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 18, 1994 |
| Grant date | Mar 19, 1996 |
| Priority date | — |
| Expiry date | Aug 18, 2014 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G9/1132
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A negatively charged toner for a two-component-type magnetic developing agent, wherein a resin medium for fixing is a copolymer resin or a resin composition having anionic polar groups and contains a magnetic powder in an amount of from 0.1 to 5 parts by weight per 100 parts by weight of the resin medium, but contains no charge control agent. The toner without containing the charge control agent exhibits very excellent spent resistance.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.