Heating device having high degree of freedom in design, and image forming apparatus
US8626007B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Oct 12, 2011 |
| Grant date | Jan 7, 2014 |
| Priority date | — |
| Expiry date | May 22, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G2215/2041
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A heating device and an image forming apparatus which make it possible to improve the degree of freedom in design to enhance the accuracy of detecting the state of a to-be-heated member, and easily reduce cost. An induction heating coil generates magnetic flux by flow of electric current therethrough. Ferrite cores formed of a magnetic material form magnetic paths. The fixing belt generates heat by the action of the magnetic flux generated by the induction heating coil 101. An antenna is disposed in an area at a location opposite to the fixing belt 120 with the ferrite cores therebetween, for detecting magnetic flux passing through the area. A control circuit determines whether or not the state of the fixing belt has changed, based on a result of detection by the antenna.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.