| 摘要 |
PROBLEM TO BE SOLVED: To provide a laser exposure device in which a recording density on the surface of a photoreceptor is enhanced. SOLUTION: The laser exposure device outputs a reference signal for a photo sensor unit 13 to begin a scanning the surface of the photoreceptor 17 by detecting a laser beam which is deflected with a polygon mirror 12, when the polygon mirror 12 deflects the laser beam having a wavelength from 390 to 415 nm and focuses on the surface of the photoreceptor 17. The slew rate of the reference signal is in a level higher than N/Tn (volt/sec), where a noise level superimposed on the reference signal is denoted by N (volt), and the tolerant time of a time lag in the main scanning direction with the laser beam caused by the noise is denoted by Tn (sec). COPYRIGHT: (C)2004,JPO&NCIPI |
