Image heating apparatus and image forming apparatus that control electrical power supply to a plurality of heat generating elements based on a temperature detected by a temperature detecting element
US10656573B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jan 4, 2019 |
| Grant date | May 19, 2020 |
| Priority date | — |
| Expiry date | Jan 4, 2039 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05B2203/007
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An image heating apparatus includes a plurality of heat generating elements, a plurality of temperature detecting elements, and an energization controlling portion for selectively controlling, based on the temperature detected by each of the plurality of temperature detecting elements, electrical power to be supplied to the plurality of heat generating elements. The plurality of temperature detecting elements are arranged in each of the plurality of heat generating elements, and the energization controlling portion controls electrical power supply to the plurality of heat generating elements for the purpose of heating a non-sheet-passing heating region, through which a recording material does not pass, among the plurality of heating regions, based on a temperature detected by a temperature detecting element that is farthest from a conveyance reference position of the recording material, among the plurality of temperature detecting elements arranged in the non-sheet-passing heating region.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.