Dry electrophotographic toner comprising graft copolymer
US4797340A · kind A · utility
6Cited by
5References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 9, 1987 |
| Grant date | Jan 10, 1989 |
| Priority date | — |
| Expiry date | Jul 9, 2007 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S430/105
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Dry toners for use in electrostatic latent image development comprising a colorant in a resin binder are described, wherein said resin binder comprises a polyester containing --COOH groups in which at least one of the --COOH groups is replaced with nitrogen-containing compounds such as amines, ammonium salts, betaines, pyridinium salts, and azines. These toners are superior in development of negatively charged latent images and exhibit good low temperature fixability.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.