Temperature sensor and frame configuration for an image forming apparatus
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United States of America Patent
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Aug 25, 2015
Grant Date -
Mar 27, 2014
app pub date -
Sep 20, 2013
filing date -
Sep 21, 2012
priority date (Note) -
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status (Latency Note)
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Abstract
In an image forming apparatus, a heating member for heating a recording sheet and a pressuring member disposed below the heating member are supported by a fixing unit frame. A noncontact temperature sensor disposed facing the heating member detects a temperature of the heating member without contacting the heating member. An upper frame covers an upper portion of the heating member and an upstream portion of the heating member in a conveying direction of the recording sheet. A plate-shaped upper sheet guide protrudes upstream in the conveying direction from an upstream end of the upper frame and extends in a width direction perpendicular to the conveying direction and to a vertical direction. The upper sheet guide and a lower sheet guide disposed below and facing the upper sheet guide the recording sheet in the conveying direction toward the heating member and the pressuring member.
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