| US 7,529,495 B2 | ||
| Image heating apparatus | ||
| Masayoshi Kachi, Abiko (Japan) | ||
| Assigned to Canon Kabushiki Kaisha, Tokyo (Japan) | ||
| Filed on Apr. 19, 2006, as Appl. No. 11/406,244. | ||
| Claims priority of application No. 2005-132577 (JP), filed on Apr. 28, 2005. | ||
| Prior Publication US 2006/0245778 A1, Nov. 02, 2006 | ||
| Int. Cl. G03G 15/20 (2006.01) | ||
| U.S. Cl. 399—69 [399/122; 399/329] | 9 Claims |
| 1. An image heating apparatus, comprising:
a coil for generating magnetic flux by energization;
a rotatable belt member for generating heat by magnetic flux generated by said coil to heat an image on a recording material;
operation means for operating said belt member so as to change a distribution of an amount of a gap between said coil and
said belt member in a width direction of said belt member perpendicular to a conveyance direction of the recording material;
and
control means for controlling said operation means so that, when a recording material having a predetermined size in said
width direction smaller than a conveyable maximum size in said width direction is conveyed, said operation means operates
said belt member so that a gap between said belt member and said coil located opposite to the non-conveyance area of the recording
material having the predetermined size is larger than a gap between said belt member and said coil located opposite the conveyance
area of the recording material having the predetermined size.
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