Fixing unit having a plurality of heaters, image forming apparatus and method of determining temperature detecting position of temperature sensor
US7130555B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 1, 2004 |
| Grant date | Oct 31, 2006 |
| Priority date | — |
| Expiry date | Nov 13, 2024 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G15/2039
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A fixing unit thermally fixes a toner on a recording medium by a fixing member having a plurality of internal heaters and an outer peripheral surface, and a temperature sensor detects a surface temperature of the fixing member at a temperature detecting position. At least one first heater, of the heaters, receives power from a first power supply, and remaining second heaters receive power from a second power supply. One of the second heaters closest to the temperature detecting position is the same distance from the temperature detecting position as or is closer to the temperature detecting position than a first heater which is closest to the temperature detecting position.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.