Image heating apparatus having heater for externally heating fixing roller
US7190914B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 1, 2005 |
| Grant date | Mar 13, 2007 |
| Priority date | — |
| Expiry date | Apr 11, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G15/2025
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The image heating apparatus for heating a toner image formed on a recording material, includes a rotatable member; heating device for heating an outer peripheral surface of the rotatable member, the heating device including a heater for forming a heating nip portion in cooperation with the rotatable member; back-up device for forming a conveying nip portion in cooperation with the rotatable member, the conveying nip portion conveying the recording material; and control device for controlling a temperature of the heater and a rotation of the rotatable member; wherein the apparatus has a cleaning mode to remove toner from the heating device, wherein the control device, in the cleaning mode, starts energizing the heater to dissipate heat in a condition that the rotatable member stops and afterward stops energizing the heater, and wherein the control device rotates the rotatable member until a part which forms a heating nip portion in a peripheral direction of the rotatable member reaches the conveying nip portion. By the virtue of the present invention, it prevents stain caused by the off-set of toner the recording material in an image heating apparatus.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.