Image heating device and image forming apparatus
US11199795B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 14, 2020 |
| Grant date | Dec 14, 2021 |
| Priority date | — |
| Expiry date | Jul 31, 2040 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G2215/2035
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
In an image heating device, a plurality of count values representing a heat storage amount in each of a plurality of heating regions heated by a plurality of heating elements are acquired, and electric power for the heating elements is controlled so that a difference between a heat storage maximum count value representing the heat storage amount of the heating region in which the heat storage amount is the largest among the plurality of heating regions, and a heat storage reduction count value representing the heat storage amount of a heat storage reduction region that is a heating region having a smaller heat storage amount than the heating region having the maximum heat storage amount, is maintained within a range of a predetermined value; and the predetermined value is set based on a width of the heat storage reduction region of a recording material.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.