| 摘要 |
PURPOSE:To minimize kick quantity and to execute a stable kick operation by providing an auxiliary track having an area being parallel to a tracking track and an area making a prescribed angle against the tracking track, between the tracking tracks. CONSTITUTION:On an optical card, clock tracks 21, 22,... and tracking tracks 31, 32,... are placed in advance alternately and at an equal interval and information recording parts 41, 42,... are provided between each track. When going out of a recording area A and entering into a kick area B, an auxiliary track K which is in a near distance to one tracking track and parallel to the tracking track is provided. Subsequently, when entering into an area C, the track K is provided so as to be inclined by theta1 against the tracking track and when entering into areas D, E, the track K is provided so as to be in an equal distance to the tracking tracks of both sides and parallel to each tracking track. In this way, the kick quantity for moving the track can be minimized and the stable kick operation can be executed.
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