Toner composition and method of making
US4912009A · kind A · utility
43Cited by
9References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 30, 1988 |
| Grant date | Mar 27, 1990 |
| Priority date | — |
| Expiry date | Dec 30, 2008 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G9/09716
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An electrophotographic dry toner having excellent properties with respect to charging, RH stability and fusing is made in a process in which the binder polymer is formed by suspension polymerizing a styrene-acrylic monomer mixture in the presence of a polyester-promoted colloidal silica suspending agent which is free of other hydrophilic polymers. The resulting polymer is melt blended with toner addenda such as a colorant and a charge control agent and the mixture is pulverized to form the toner composition.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.