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Image heating apparatus having heater for externally heating fixing roller

  • US 20050207770A1
  • Filed: 02/01/2005
  • Published: 09/22/2005
  • Est. Priority Date: 02/03/2004
  • Status: Active Grant
First Claim
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1. An image heating apparatus for heating a toner image formed on a recording material, comprising:

  • a rotatable member;

    heating means for heating an outer peripheral surface of said rotatable member, said heating means including a heater for forming a heating nip portion in cooperation with said rotatable member;

    back-up means for forming a conveying nip portion in cooperation with said rotatable member, the conveying nip portion conveying the recording material; and

    control means for controlling a temperature of said heater and a rotation of said rotatable member;

    wherein said apparatus has a cleaning mode to remove toner from said heating means, wherein said control means, in the cleaning mode, starts energizing said heater to dissipate heat in a condition that said rotatable member stops and afterward stops energizing said heater, and wherein said control means rotates said rotatable member until a part which forms a heating nip portion in a peripheral direction of said rotatable member reaches the conveying nip portion.

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