Is a
Patent attributes
Patent Jurisdiction
Patent Number
Date of Patent
January 18, 2011
Patent Application Number
11612569
Date Filed
December 19, 2006
Patent Primary Examiner
Patent abstract
A medium supporting member, which is used in an image forming apparatus, includes: a plurality of ribs that support a recording medium; and an irradiation target portion that has a flat and smooth surface which is irradiated with a light by a light emitting unit of the image forming apparatus, wherein: a reflected light of the light emitted by the light emitting unit is detected by a light receiving unit of the image forming apparatus, and a presence or absence of the recording medium in the irradiation target portion is detected based on a quantity of the reflected light; and a distance between the irradiation target portion and the recording medium is increased in a direction from the light receiving unit to the light emitting unit.
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