Heating device and fixing device
US6861630B2 · kind B2 · utility
24Cited by
11References
5Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Mar 7, 2003 |
| Grant date | Mar 1, 2005 |
| Priority date | — |
| Expiry date | Mar 7, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G2215/2006
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A CPU detects a temperature of a central part of a heating roller. If the detected temperature does not exceed 180° C., the CPU drives a central coil or a side-end coil for 0.4 second in accordance with a temperature difference between the central part of the heating roller and a side-end part of the heating roller. Then, the CPU drives the side-end coil or central coil for 0.2 second. Thereafter, the CPU detects the temperature of the central part and repeats the driving control until the detected temperature reaches 180° C.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.