Is a
Patent attributes
Current Assignee
0
Patent Jurisdiction
Patent Number
Patent Inventor Names
Daisuke Ichii0
Yoshinori Hayashi0
Nobuaki Kubo0
Naoto Watanabe0
Date of Patent
June 9, 2009
0Patent Application Number
118770200
Date Filed
October 23, 2007
0Patent Primary Examiner
Patent abstract
A scanning optical system leads the light fluxes deflected by the polygon mirror to a photosensitive drum. An absolute value of a lateral magnification in a main scanning direction is larger than an absolute value of a lateral magnification in a sub-scanning direction. Moreover, a beam diameter in the sub-scanning direction on a surface of the photosensitive drum is equal to or smaller than a beam diameter in the main scanning direction and larger than a scan line interval.
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