| 摘要 |
An optical scanning device includes a dot clock generator which generates a dot clock having a dot clock cycle corresponding to a scanning direction of an optical flux by dividing master clocks which constitute basic clocks with frequency-dividing-number corresponding to a scanning position. The dot clock generator changes, with respect to a group of dot clocks which is formed of plural sets of dot clocks in which a frequency-dividing-number sequence pattern of the set of dot clocks which is constituted of two or more continuous dot clocks is repeated plural times on one scanning line, the frequency-dividing-number sequence pattern of each set of dot clocks while maintaining a total value of frequency dividing numbers necessary for generating each set of dot clocks at a constant value.
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