Oblon, Spivak, McClelland, Maier & Neustadt, P.C.
Optical scanner and image forming apparatus using the same
An optical scanner for an image forming apparatus of the present invention includes a polygonal mirror for steering a scanning beam incident thereto and an optical device located in the vicinity of the polygonal mirror. The polygonal mirror and optical device are supported by a housing. A heat radiation guide adjoins the polygonal mirror and is formed integrally with or separately from the housing. The heat radiation guide has a guide surface inclined relative to the axis of rotation of the polygonal mirror and intersecting a plane virtually formed by a scanning beam.
Ricoh Company, Ltd.
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G02B G02B G02B
inventional inventional inventional
Hiroshi
Yoshizawa