Image heating apparatus and image forming apparatus for preventing overheating of a heating region when processing consecutive recording materials
US12271132B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jun 2, 2023 |
| Grant date | Apr 8, 2025 |
| Priority date | — |
| Expiry date | Jun 29, 2043 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05B2203/037
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Whether a first heating region is actually a passing heating region or a non-passing heating region which a recording material does not pass through, is detected by the temperature detected by a temperature detecting portion, based on a difference between a detected temperature by a temperature detecting portion in a reference heating region, which is specified to a heating region including a conveyance reference position of the recording material, and a detected temperature in a first heating region which does not include the conveyance reference position and is specified to a passing heating region which the recording material passing through. In a case where it is determined that the first heating region is the non-passing heating region, a prevention control, to prevent overheat of the first heating region is performed in the heating processing of the recording material that passes the nip portion after the determination.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.