Image-forming machine fixing device with a nipping region having a pressure distribution
US7860444B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 29, 2008 |
| Grant date | Dec 28, 2010 |
| Priority date | — |
| Expiry date | Oct 29, 2028 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G2215/2009
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A fixing device comprises a thermally fixing roller, a belt, and pushing means which pushes the belt toward the thermally fixing roller. A nipping region is formed between the belt and the thermally fixing roller. A maximum pressure is produced in an upstream end region of the thermally fixing roller in the direction of rotation in the nipping region, another maximum pressure is produced in a downstream end region thereof in the direction of rotation in the nipping region, and a pressure is produced in an intermediate region, which pressure being not higher than the maximum pressure in the upstream end region and not higher than the another maximum pressure in the downstream end region.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.