Patent ID: 7948853

Claim:
An optical disc device that irradiates a light beam on an optical disc having a recording layer in which information is recorded and a positioning layer in which tracks for specifying a recording position of the information in the recording layer are provided, the optical disc device comprising: an information recording unit that irradiates a second light beam for information on a target position in the recording layer to record the information by shifting a position in an optical axis direction of the second light beam for information from the positioning layer while focusing a first light beam for positioning on a desired track of the positioning layer, the optical axis direction of the second light beam for information sharing an optical axis with the first light beam for positioning; a terminal-end recognizing unit that recognizes, when new information is recorded in the recording layer having a recorded area in which information is already recorded, a terminal end of the recorded area; and a target-position setting unit that sets the target position to separate, by an arbitrary number of guard tracks, the terminal end of the recorded area and a start end of a recording planned area in which information is recorded anew.