Optical scanner

专利名称：Optical scanner

发明人：Mitsuhiro Ohno,Masanobu Yamamoto申请号：US10452450申请日：20030602

公开号：US20030226958A1公开日：20031211

专利附图：

摘要：Provided is an optical scanner capable of preventing a temperature rise in apolygon mirror and its surrounding, and contributing to the prevention of degradation inimage quality. Two cells (an inlet and an outlet) among a plurality of cells of astrengthening rib structure disposed in an optical base are connected through a

passageway so as to form a flow path of outside air (air), and a bottom surface of a driveboard forming part of an outer wall of a containing chamber and supporting a polygonmirror is exposed to the flow path (passageway). Even if a motor and a motor circuitdisposed in the drive board generates heat during rotation of the polygon mirror, thedrive board is directly cooled by the air flowing through the flow path, so a temperaturerise in the polygon mirror and its surroundings can be prevented. Thereby, degradation inscanning characteristics of a laser beam due to deformation of an enclosure resultingfrom a temperature difference during heat generation can be prevented.

申请人：OHNO MITSUHIRO,YAMAMOTO MASANOBU

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