White toner for electrostatic charge image development, electrostatic charge image developer, toner cartridge, process cartridge, and image forming apparatus
US8298737B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 1, 2010 |
| Grant date | Oct 30, 2012 |
| Priority date | — |
| Expiry date | May 21, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G15/0194
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A white toner for electrostatic charge image development is disclosed. The white toner for electrostatic charge image development includes a binder resin, a first white pigment, a second white pigment, and a release agent, a specific gravity D1 of the first white pigment satisfying a condition of 3.5<D1<6.0, a specific gravity D2 of the second white pigment satisfying a condition of 0.3<D2<1.2, a total content of the first white pigment and the second white pigment being in the range of from about 20% by weight to about 50% by weight with respect to a total weight of the white toner for electrostatic charge image development, and the release agent including a metal salt.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.