| 摘要 |
PROBLEM TO BE SOLVED: To provide an imaging apparatus in which an integrated circuit for controlling a semiconductor laser simultaneously with generation of an image writing clock is formed within one chip. SOLUTION: A Clock for transferring image data is converted into data corresponding to a modulation pulse train through an LUT 17 based on image data and loaded to a Shift-Register 15 in response to a Load signal. On the other hand, a PLL for multiplying the Clock by 8 comprises a Phase-detector 11, a Loop-filter 12, a VCO 13 and a 1/8 14. The PLL generates a VCLK having a frequency equal to 8 times that of the Clock and the Shift-Register 15 outputs modulation data according to the VCLK. Since the imaging apparatus is arranged to convert the image data through the LUT, it is applicable to a case where the laser scanning optical system is changed by simply altering the content of the LUT.
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