| 摘要 |
PROBLEM TO BE SOLVED: To solve a problem that data of a main scanning direction are aslant recorded to the edge of a photosensitive film, and the quality of recording image quality deteriorates when the scanning locus of a laser beam deviates at the time of the data recording to the photosensitive film. SOLUTION: According to a detection state of the laser beam in photo-sensor 10-14, the existence of the scanning locus deviation of the laser beam is detected, when the scanning locus deviation of the laser beam is detected, the data recording operation of an optical system 6 is stopped, and an abnormal message to the periphery such as a monitor is enabled.
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