Image forming apparatus with magnetic flux detection
US7684716B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jun 4, 2007 |
| Grant date | Mar 23, 2010 |
| Priority date | — |
| Expiry date | Apr 16, 2028 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G2215/2032
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An image heating apparatus includes a coil for generating a magnetic flux; an endless belt having an electroconductive layer for generating heat by the magnetic flux of the coil wherein a recording material carrying image is heated by heat of the belt; a magnetic flux detecting means disposed opposed to the coil with the belt interposed therebetween and capable of detecting the magnetic flux from the coil, the magnetic flux detecting means including a detection portion capable of detecting such a part of the magnetic flux of the magnetic flux generated by the coil as is from a region corresponding to not less than one half of a heat generating region of the belt with respect to a widthwise direction of the recording material; and prohibition means for prohibiting electric power supply to the coil when an amount of the magnetic flux detected by the magnetic flux detecting means reaches a predetermined amount.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.