Fixing device and image forming apparatus
US10067449B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 27, 2016 |
| Grant date | Sep 4, 2018 |
| Priority date | — |
| Expiry date | Jun 27, 2036 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G2215/2035
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A fixing device includes a primary heater and a secondary heater that heat a fixing rotator. The primary heater includes a primary major heat generation portion and a primary minor heat generation portion. The primary minor heat generation portion includes a major heat generator that generates an increased amount of heat and a minor heat generator that generates a decreased amount of heat smaller than the increased amount of heat generated by the major heat generator. The major heat generator has a width in an axial direction of the fixing rotator that is not smaller than 30 percent and not greater than 35 percent with respect to a width of the primary minor heat generation portion in the axial direction of the fixing rotator. A temperature detector is disposed opposite the minor heat generator of the primary heater to detect a temperature of the fixing rotator.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.