Fixing device and image formation apparatus
US8145113B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 16, 2009 |
| Grant date | Mar 27, 2012 |
| Priority date | — |
| Expiry date | Sep 16, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G2215/2029
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A fixing device forms a fixing nip by pressing a first roller, which is inside a rotation path of a rotating belt, with a second roller via the belt, and thermally fixes an unfixed image formed on a sheet S by passing the sheet S through the fixing nip while heating the belt by electromagnetic induction. The fixing device comprises an excitation coil positioned outside said path, and a fixed plate that (i) is inside said path, substantially facing the excitation coil via the belt, (ii) contacts an inner surface of the belt, and (iii) keeps the belt on said path. A base member of the belt is a conductive heat generation layer containing no magnetic shunt alloy. The fixed plate includes a conductive layer and a magnetic shunt alloy layer that is closer to the belt than the conductive layer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.