Toner for developing electrostatic image, fixing method for fixing image formed of the toner, and image forming method and process cartridge using the toner
US7379696B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 19, 2005 |
| Grant date | May 27, 2008 |
| Priority date | — |
| Expiry date | Dec 26, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G9/08755
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A toner including toner particles including a colorant; a binder resin; and a release agent, wherein the binder resin includes a polyester resin (A) having a crystallinity and a specific formula (1), wherein a molar ratio of the ester bond of the crystalline polyester resin to total ester bonds included in the binder resin is not less than 0.60, and wherein the toner has a weight average particle diameter of from 3.0 to 9.0 μm, and includes toner particles having a particle diameter not greater than 5 μm in an amount of from 60 to 90% by quantity. A fixing method in which a toner image of the toner is fixed with a fixing device including a fixing roller having a thickness not greater than 1.0 mm and a pressure roller, wherein the fixing pressure is not greater than 1.5×105 Pa. An image forming method and a process cartridge using the toner are also provided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.