Image heating apparatus
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United States of America Patent
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Jul 14, 2015
Grant Date -
Feb 6, 2014
app pub date -
Jul 24, 2013
filing date -
Jul 31, 2012
priority date (Note) -
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status (Latency Note)
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Abstract
An image heating apparatus includes: a heating member configured to heat a toner image formed on a sheet by using a toner containing a wax; an exciting coil; a magnetic flux suppressing member configured to suppress a part of magnetic flux actable from the exciting coil onto the heating member; a screw shaft configured to hold the magnetic flux suppressing member and configured to slide the magnetic flux suppressing member along a longitudinal direction of the heating member; and a controller configured to control a rotational movement operation of the screw shaft so that the magnetic flux suppressing member is moved to a position depending on a width of the sheet. The controller is, during non-image heating, capable of executing an operation in a mode in which the screw shaft is rotationally moved so that the magnetic flux suppressing member is reciprocated at least once in a predetermined range.
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