Belt-type fixing device
US7149464B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 22, 2004 |
| Grant date | Dec 12, 2006 |
| Priority date | — |
| Expiry date | Mar 22, 2024 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G2215/2038
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A belt-type fixing device is provided in which a wide fixing nip having a generally flat pressure distribution with respect to a paper feeding direction can be formed.The belt-type fixing device of the invention has a nip forming member that is fixed inside an endless-sheet-like fixing belt to be heated so as to be incapable of rotating, and a rotatable pressurizing roller that is in pressure contact with the nip forming member with the fixing belt interposed between. Contact part between the fixing belt and the pressurizing roller forms a fixing nip, and a surface of the nip forming member that is opposite to the pressurizing roller is configured as a curved surface extending along an outer circumferential surface of the pressurizing roller so that a pressure distribution in the fixing nip is made generally flat with respect to the paper feeding direction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.