Toner, developer including the toner, container containing the toner or the developer and method of producing the toner
US7157199B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 1, 2003 |
| Grant date | Jan 2, 2007 |
| Priority date | — |
| Expiry date | Dec 19, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G9/08
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A toner comprising toner particles comprising a first binder resin; a second binder resin different from said first binder resin and having a glass transition temperature of from 40 to 55° C.; a colorant; and a release agent, and a particulate resin material which is located on surface of the toner particles with a coverage of from 50 to 100%, and which has a glass transition temperature of from 50 to 90° C., wherein a weight ratio (W2/W1) between the second binder resin (W2) and the first binder resin (W1) is from 5/95 to 40/60, and wherein a ratio (G′80/G′180) between a storage modulus of the toner at 80° C. (G′80) and a storage modulus at 180° C. (G′180) is from 100 to 1,000.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.