Fixing device and image forming apparatus including same
US8983348B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 22, 2014 |
| Grant date | Mar 17, 2015 |
| Priority date | — |
| Expiry date | Jan 22, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G2215/2032
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A fixing device that includes a rotary fixing member; a pressure roller configured to press against the fixing member to form a nip with the fixing member; and an induction heating unit as a heat source to heat the fixing member. The induction heating unit includes an excitation coil; a coil retainer to hold the excitation coil; and a cover member disposed opposite the coil retainer in an opposite side of the rotary fixing member, in which the cover member protrudes toward a central predetermined range of the excitation coil in an axial direction of the rotary fixing member to effectively cool the fixing device. The induction heating unit further includes a rectifying member to effectively cool the fixing device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.