Image heating apparatus
US5994671A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 20, 1997 |
| Grant date | Nov 30, 1999 |
| Priority date | — |
| Expiry date | Mar 20, 2017 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G2215/2035
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The present invention provides an image heating apparatus comprising a heating member having a first heating resistor and a second heating resistor, a temperature detecting element for detecting a temperature of the heating member, and a power supply control means for controlling power supply to the first and second heating resistors so that detected temperature of the temperature detecting element is maintained a set temperature. The power supply control means sends the power supply to the first heating resistor in a first power supply pattern, and sends the power supply to the second heating resistor in a second power supply pattern different from the first power supply pattern.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.