Heating apparatus and induction heating control method
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United States of America Patent
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Jun 10, 2008
Grant Date -
Sep 13, 2007
app pub date -
Mar 7, 2006
filing date -
Mar 7, 2006
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
In an aspect of this invention, a fixing device includes a heating member including a first area and a second area formed of conductive members (e.g., aluminum and iron) having different magnetic permeability ratios, and an induction heating unit which generates a magnetic field from a coil to induction-heat this heating member, and the fixing device changes a frequency of a high-frequency current to be supplied to the coil to thereby control a heating area of the heating member.
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