Image heating device including a controller that executes first and second heat controls based on temperatures detected by first and second detecting elements
US10429776B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 20, 2018 |
| Grant date | Oct 1, 2019 |
| Priority date | — |
| Expiry date | Jul 20, 2038 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G2215/2035
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A controller of an image heating apparatus executes a first heater control operation, when a sheet having a width such that the sheet passes both a position of a first temperature detector and a position of a second temperature detector, is heated in a nip, for controlling power supply to a heater so that a temperature detected by the second temperature detector is maintained at a heater target temperature, and a second heater control operation, when a sheet having a width such that the sheet passes through the position of the first temperature detector, but does not pass through the position of the second temperature detector, is heated in the nip, for controlling the power supply to the heater, so that the temperature detected by the first temperature detector, irrespective of the temperature detected by the second temperature detector, is maintained at a film target temperature.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.