Fusing device, heat generating device, image forming device and temperature control method
US6788906B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 17, 2003 |
| Grant date | Sep 7, 2004 |
| Priority date | — |
| Expiry date | Mar 17, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G15/2039
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Two temperature areas are set at a higher temperature side and at a lower temperature side of target temperature respectively. The power stage of the temperature areas at the higher temperature side is set to −1 and the power stage of the temperature areas at the lower temperature side is set to +1. Thus, a current value is varied little and generation of flicker can be reduced. Further, A temperature can be always converged into the target temperature. When a temperature is in a temperature area near to the target temperature, the power stage is maintained except for a case in which a temperature has passed through a temperature area other than this near temperature area and the target temperature area and enters this near temperature area for the first time. Thus, an amplitude of power can be suppressed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.