| 摘要 |
PROBLEM TO BE SOLVED: To obtain a recorded image where the bend of a scanning line and the deformation of spot light are prevented and whose quality is excellent. SOLUTION: When a multibeam laser unit 10 is incorporated into an optical scanner main body, the interval adjustment of the scanning lines on a photoreceptor is performed by rotating the multibeam laser unit 10 around an optical axis at first and focusing in a subscanning direction is performed by moving a cylindrical lens 11 in an optical axis direction. Next, a scanning lens 13 is moved in a virtical direction shown with an arrow A, and is adjusted so as to allow a plurality of lease beam to be made incident at regular intervals around the center line 13a of the scanning lens 13, and then the scanning lens 13 is fixed, so that assemble is completed. |
