| 摘要 |
PROBLEM TO BE SOLVED: To provide an optical scanning device and an image forming apparatus that uses the same which maintain consistent scanning beam spot diameters in the main scanning direction throughout respective scanning positions on a scan target surface, to reduce the beam spot diameter, and to form high-resolution images. SOLUTION: The optical scanning device includes a light source; a light source driving unit configured to modulate/drive the light source; a pulse-width information holding unit configured to hold pulse width information items of predetermined pixels, corresponding to scanning positions on the scan target surface; a deflecting unit (106) including a reflection surface configured to deflect/scan a light beam (201 to 204) from the light source; and a scan-imaging optical system configured to image the light beam deflected by the deflecting unit on the scan target surface. The pulse-width information holding unit holds the pulse width information items such as to cancel out the deviations of the main scanning beam spot diameters among the scanning positions on the scan target surface; and the light source driving unit drives the light source, based on the information items held by the pulse width information holding unit. COPYRIGHT: (C)2009,JPO&INPIT
|
