Fixing device that can suppress variation in temperature, and image forming apparatus having the fixing device
US9964903B1 · kind B1 · utility
Assignees
Inventors
Key dates
| Filing date | Dec 1, 2017 |
| Grant date | May 8, 2018 |
| Priority date | — |
| Expiry date | Dec 1, 2037 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G2215/2035
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A fixing device includes a magnetic flux generation unit, an auxiliary heating body formed of material that generates heat from the magnetic flux generated by the magnetic flux generation unit, a rotatable fixing belt having opposing first and second ends in a direction of its rotational axis and a material that generates heat from the magnetic flux, a magnetic flux shield in contact with the auxiliary heating body and having first and second openings that expose the auxiliary body, the first and second openings being symmetrical with respect to a center point along the rotational axis between the first and second ends, a temperature sensor in contact with the auxiliary heating body through one of the first and second openings of the magnetic flux shield shielding member, and a driver that controls power supplied to the magnetic flux generation unit in accordance with signals from the temperature sensor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.