Toner compositions including polymer binders with adhesion promoting and charge control monomers
US5783346A · kind A · utility
Assignees
Inventors
Key dates
| Filing date | Jan 6, 1997 |
| Grant date | Jul 21, 1998 |
| Priority date | — |
| Expiry date | Jan 6, 2017 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G9/08791
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
There is provided a toner composition which comprises a binder and a colorant, wherein said binder comprises PA1 a copolymer of a vinyl aromatic monomer; a second monomer selected from the group consisting of conjugated diene monomers or acrylate monomers selected from the group consisting of alkyl acrylate monomers and alkyl methacrylate monomers; a third monomer which is a crosslinking agent; a fourth monomer which is an adhesion promoting vinyl monomer containing a hydroxyl group; and a fifth monomer which is a charge control vinyl monomer containing an amine group. In a preferred embodiment, the binder further comprises the acid form of an amino acid soap which is the salt of an alkyl sarcosine having an alkyl group which contains from about 10 to about 20 carbon atoms. In additional preferred embodiments, the toner compositions of the invention further include a charge control agent. In other preferred embodiments, the toner compositions of the invention are used with a carrier. The toner compositions show a good combination of adhesion and charge stability.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.