Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Toshimitsu Ichiyanagi0
Kenichi Komiya0
Koji Tanimoto0
Naoaki Ide0
Jun Sakakibara0
Date of Patent
March 6, 2007
0Patent Application Number
112147750
Date Filed
August 31, 2005
0Patent Primary Examiner
Patent abstract
A light beam position detecting device detects the passage positions of a plurality of light beams for scanning the surface of a photosensitive drum. The light beam position detecting device has a sensor pattern for generating an output which is continuously changed in a wide range with a variation in the passage position of the light beam in a sub-scanning direction perpendicular to a main scanning direction of the light beam. The sensor pattern precisely detects the relative scanning position of the light beam in a wide range. The passage positions of the plurality of light beams for scanning the surface of the photosensitive drum are controlled to a preset position based on the output of the sensor pattern.
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