Invention Grant
- Patent Title: Image heating apparatus and image forming apparatus
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Application No.: US16718485Application Date: 2019-12-18
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Publication No.: US10915046B2Publication Date: 2021-02-09
- Inventor: Takahiro Uchiyama , Atsushi Iwasaki
- Applicant: CANON KABUSHIKI KAISHA
- Applicant Address: JP Tokyo
- Assignee: CANON KABUSHIKI KAISHA
- Current Assignee: CANON KABUSHIKI KAISHA
- Current Assignee Address: JP Tokyo
- Agency: Venable LLP
- Priority: JP2017-012046 20170126
- Main IPC: G03G15/20
- IPC: G03G15/20 ; H04N1/00

Abstract:
An image heating apparatus includes a heater having a plurality of heat generating elements, a roller for forming a nip portion with the heater, an acquisition portion that acquires a plurality of count values indicating heat accumulation amounts of a plurality of heating regions heated by the plurality of heat generating elements, respectively, and a control portion that controls electrical power to be supplied to the plurality of heat generating elements to control individual heat generating quantities of the plurality of heat generating elements. The control portion controls the heat generating quantities so that a difference between a first count value indicating a heat accumulation amount of a first heating region heated by a first heat generating element and a second count value indicating a heat accumulation amount of a second heating region heated by a second heat generating element is maintained within a predetermined range.
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