Image forming method and dry toner therefor
US6168894A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 13, 1996 |
| Grant date | Jan 2, 2001 |
| Priority date | — |
| Expiry date | Sep 13, 2016 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G9/08775
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An image forming method including a new toner fixing method and toner therefor, wherein the method includes two rollers in which a toner image on an image supporting material is fixed by heating at a nipped section of the rollers, wherein one of the rollers which is a fixing roller contacting the toner image includes a metal cylinder having a thickness of not more than 1.0 mm, and the fixing pressure of the two rollers is not more than 1.4.times.10.sup.5 Pa, and wherein the toner contains resins including two polyester resins, (A) and (B), and the polyester resin (B) includes discrete domains of the polyester resin (A) which has higher glass transition Tg and higher molecular weight than those of the polyester resin (B) and includes a component insoluble in tetrahydrofuran, and wherein the developed image can be fixed at relative low temperature and in wide temperature range, and the fixed image has excellent image quality and preserving property.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.