Fixing device with controlled heating and image forming apparatus
US11662678B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 24, 2021 |
| Grant date | May 30, 2023 |
| Priority date | — |
| Expiry date | Nov 24, 2041 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G2215/2038
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A fixing device includes a fixing rotator over which a recording medium bearing an image is conveyed. A first heater heats the fixing rotator and generates heat evenly in a maximum conveyance span where the recording medium having a maximum width in a width direction of the recording medium is conveyed. The maximum width is available for the fixing rotator. A second heater heats the fixing rotator and generates heat in the maximum conveyance span. The second heater includes a first portion that generates heat in a first heat generation amount and a second portion that generates heat in a second heat generation amount that is greater than the first heat generation amount of the first portion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.