Induction heating and fixing device for fixing toner on a recording medium in an image forming apparatus
US6661991B2 · kind B2 · utility
5Cited by
7References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 31, 2002 |
| Grant date | Dec 9, 2003 |
| Priority date | — |
| Expiry date | Jan 31, 2022 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05B6/145
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An induction heating and fixing device includes a hollow cylindrical fixing member, a core for forming a closed magnetic circuit, a ring member formed of magnetic material and provided on the core in the vicinity of the bilateral ends of the fixing member, a coil wound around the core, and a pressure member disposed so as to press against the fixing member. This device suppresses temperature drop at the bilateral ends of the fixing roller and maintains uniform temperature distribution in the axial direction of the fixing roller by leaving the device open at both bilateral ends.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.