Image heating apparatus that controls plural heat generating blocks based on whether a recording material passes the respective block, and image forming apparatus
US10969713B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 21, 2020 |
| Grant date | Apr 6, 2021 |
| Priority date | — |
| Expiry date | Apr 21, 2040 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G15/2042
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A controller controls power to be supplied to a plurality of heat-generating blocks obtained by dividing a heater in a direction orthogonal to a transport direction for a recording material, and when images formed on a plurality of sheets of the recording material having an equal size are continuously heated, and the controller determines whether each of the heat-generating blocks is a heat-generating block which is passed by the recording material or a heat-generating block which is not passed by the recording material on the basis of a detection temperature by a temperature detecting element when prescribed power is supplied to the heat-generating block and changes a control condition in heating on the basis of the determination.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.