Image fixing device having heating portion at one end thereof
US5426495A · kind A · utility
38Cited by
6References
26Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 28, 1994 |
| Grant date | Jun 20, 1995 |
| Priority date | — |
| Expiry date | Jan 28, 2014 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G15/2053
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
In an image forming apparatus, an image fixing device has a hollow cylindrical fixing roller implemented as a heat pipe, and a pressing roller held in pressing contact with the fixing roller. The fixing roller is made up of a fixing portion, and a paper nipping portion against which the pressing roller is constantly urged. The paper nipping portion has a greater wall thickness than the heating section. This kind of configuration promotes rapid heat conduction from a halogen heater to a working fluid filled in the heat pipe, while preventing the paper nipping portion of the fixing roller from being deformed by the pressing roller.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.