| 摘要 |
<p>PROBLEM TO BE SOLVED: To improve precision in a reading image or a recording image by correcting fluctuation in a scanning speed due to a manufacturing error or aberration of an fθlens when scanning is performed by an optical scanner. SOLUTION: A data selection signal is obtained to be stored beforehand so that a sampling clock so as to correct the fluctuation in the scanning speed detected in preparatory scanning is formed, and a clock is selected from a reference clock and delay clocks formed by a delay element 1 by a selector 2 based on the data selection signal, and prescribed operation is performed related the selected clock by an operation means 3, and the sampling clock is formed.</p> |
