DEVICE TO FORM IMAGE ON OPTICAL DISK, AND PROGRAM TO SET UP ITS VIBRATION FREQUENCY

摘要

PROBLEM TO BE SOLVED: To provide an optical disk image forming device which can form images in a state preventing or reducing the resonance of the actuator. SOLUTION: This image forming device forms images by radiating a laser beam to the color changing layer of a photosensitive or heat-sensitive material formed on an optical disk. It has a motor to turn the optical disk, a revolution controller to make the motor turn at a predetermined revolution frequency, a semiconductor laser to emit a laser beam, an objective lens disposed between the semiconductor laser and the optical disk, an actuator to move the objective lens, a focusing controller to control the actuator to focus the laser beam from the objective lens on the color changing layer, and a vibration controller to control the vibration of the actuator to radially vibrate the objective lens at the predetermined frequency while turning the disk at the predetermined revolution and focusing the laser beam on the color changing layer. The predetermined vibration frequency is a frequency other than the resonance frequency specific to the actuator. COPYRIGHT: (C)2007,JPO&INPIT