| 摘要 |
An image formation width calculation circuit and an image formation shift amount determination circuit are provided so that, before a visible image is formed, an effective image formation diameter of an image formation laser spot is measured, and based on the result, a shift amount of the laser spot is adjusted. An optical pickup which forms a plurality of laser spots on an optical disk is also provided. An image formation focus control laser power control circuit and an image formation laser power control circuit are also provided. A focus control laser spot is located ahead of the image formation laser spot.
|
