Toner for a two-component-type magnetic developing agent having excellent spent resistance
US5521045A · kind A · utility
0Cited by
3References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 18, 1994 |
| Grant date | May 28, 1996 |
| Priority date | — |
| Expiry date | Nov 18, 2014 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S430/105
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A toner in which a small amount of magnetic powder is disposed in a resin medium for fixing which comprises a cationic polar group-containing copolymer resin or a resin composition. A distinguished feature resides in that the toner does not contain a charge control agent. The toner is positively charged and exhibits very good spent resistance. The toner further exhibits favorable electrophotographic properties such as transfer efficiency despite there is contained no charge control agent.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.