Toner for use in developing electrostatic images containing polypropylene
US4921771A · kind A · utility
58Cited by
9References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 19, 1988 |
| Grant date | May 1, 1990 |
| Priority date | — |
| Expiry date | Jan 19, 2008 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S526/934
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A toner for developing electrostatic images is disclosed which comprises a coloring agent, a styrene homopolymer or copolymer with a vinyl monomer or moners, and polypropylene having a number average molecular weight of about 3000 to 4000 in an amount between about 0.02 and 40 parts by weight per 100 parts by weight of the styrene homopolymer or copolymer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.