Patent ID: 7760221

Claim:
An optical disk image drawing method of forming a visible image on an optical disk that includes a data recording layer formed with a track and storing predetermined information along the track and an image drawing layer on which the visible image is to be formed and which is laminated on the data recording layer, wherein data is capable of being recorded on the data recording layer and visible image is capable of being formed on the image drawing layer by applying a laser beam from a same surface side of the optical disk, the method comprising: rotating the optical disk by a spindle motor; focusing a laser beam having a reproducing power outputted from an optical pick-up on the data recording layer and tracking the laser beam on the track of the data recording layer reading the predetermined information recorded on the track; detecting a predetermined position on the track based on the read predetermined information as a reference position in the disk radial direction; measuring a position of the optical pickup in a disk radial direction with respect to the reference position disk radial direction; changing a focus position of the laser beam from the data recording layer to the image drawing layer after the reference position is detected; starting forming the visible image on the image drawing layer from a predetermined relative position of the optical pickup in the disk radial direction with respect to the reference position based on the measured position of the optical pickup in the disk radial direction; and sequentially moving the optical pick-up in the disk radial direction synchronously with the rotation of the spindle motor to proceed to form the visible image after the forming operation of the visible image is started.