Electrophotographic toner surface treated with metal oxide
US6197466A · kind A · utility
6Cited by
8References
20Claims
0Family size
Inventors
Key dates
| Filing date | Nov 30, 1999 |
| Grant date | Mar 6, 2001 |
| Priority date | — |
| Expiry date | Nov 30, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G9/09708
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An electrophotographic toner composition comprising toner particles admixed with metal oxide, wherein the metal oxide is selected from titanium dioxide and silicon dioxide; the metal oxide is 0.1 to 5.0 weight percent of the toner composition; and the ratio of titanium dioxide on the surface of the toner particles:total titanium dioxide in the toner composition is in the range of 1.0-3.0:1.0 and the ratio of silicon dioxide on the surface of the toner particles:total silicon dioxide in the toner composition is in the range of 10.0-25.0:1.0.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.