| 摘要 |
PROBLEM TO BE SOLVED: To provide an optical scanning apparatus capable of reducing a streaky density unevenness to prevent an image deterioration of an entire color image, and to provide a color image forming apparatus. SOLUTION: The optical scanning apparatus comprises in which a plurality of light beams emitted from the four or more light emitting portions of the corresponding one of the light source unit are simultaneously deflected for scanning by the deflecting surface of the deflecting unit, and when a first scanning line on the surfaces to be scanned is defined as a scanning line located on an uppermost stream side in a direction in which corresponding one of the surfaces to be scanned is moved, of a plurality of scanning lines formed by the plurality of light beams emitted from the four or more light emitting portions of the corresponding one of the light source unit, image data corresponding to a first scanning line on at least one of the plurality of surfaces to be scanned in k-th deflection operation of the deflecting unit is displaced by at least one line space from image data corresponding to a first scanning line on another one of the plurality of surfaces to be scanned in k-th deflection operation of the deflecting unit. COPYRIGHT: (C)2007,JPO&INPIT
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