Fixing apparatus
US8942589B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 29, 2013 |
| Grant date | Jan 27, 2015 |
| Priority date | — |
| Expiry date | Feb 1, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G2215/2035
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A fixing apparatus includes a film, a heater that contacts the inner face of the film and is capable of changing heat distribution, and a pressure member that forms the nip portion with the heater via the film, the pressure member including a region on which a diameter is increased from a center portion toward an end portion, wherein the fixing apparatus performs heater control so that a ratio of an amount of heat generation at the end portion of the heater to an amount of heat generation at the center portion of the heater is changed based on a temperature of the end portion of the pressure member, during a period at least from when the warm-up of the fixing apparatus is started until the recording material reaches the nip portion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.