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    • 91. 发明授权
    • Optical scanning device and color image forming apparatus
    • 光学扫描装置和彩色图像形成装置
    • US07012723B2
    • 2006-03-14
    • US10537420
    • 2003-12-08
    • Masanori YoshikawaHideo HiroseMotonobu YoshikawaYoshiharu Yamamoto
    • Masanori YoshikawaHideo HiroseMotonobu YoshikawaYoshiharu Yamamoto
    • G02B26/08
    • G02B26/126G02B26/123G06K15/1261H04N1/1135H04N1/1215
    • By a first image forming optical system (42a to 42d), a plurality of light beams from light sources (41a to 41d) form linear images on a common deflecting surface (46) of an optical deflector (44). Light beams reflected off the optical deflector (44) are reflected by a plurality of curved surface mirrors (45a to 45d) and are allowed to scan over photosensitive members (4a to 4d), respectively. The plurality of curved surface mirrors (45a to 45d) are disposed on the same side with respect to a plane that includes a normal line at a center of the deflecting surface (46) and is parallel to a main scanning direction. Further, curved surfaces of the plurality of curved surface mirrors (45a to 45d) vary in shape. Thus, a tandem type color image forming apparatus that achieves low cost and has excellent optical performance and an optical scanning device that is used favorably in the color image forming apparatus can be provided.
    • 通过第一图像形成光学系统(42a至42d),来自光源(41a至41d)的多个光束在光学偏转器(44)的共同偏转表面(46)上形成线性图像。 从光偏转器(44)反射的光束被多个弯曲表面反射镜(45a〜45d)反射,并分别在光敏部件(4a〜4d)上扫描。 多个弯曲表面镜45a至45d相对于包括偏转表面46的中心处的法线的平面设置在与主扫描方向平行的同一侧。 此外,多个曲面镜(45a〜45d)的曲面形状变化。 因此,可以提供一种在彩色图像形成装置中有利地实现低成本且具有优异的光学性能的串联型彩色图像形成装置和光学扫描装置。