Optical disc and optical disc device

An optical disc comprising:

• an optical plotting layer that is formed at a label surface side and on which an image is formed by heat change with a laser beam emitted from a recording surface side;
• a protective layer that is formed at the label surface side of the optical plotting layer, protects the optical plotting layer, and through which the image can be viewed from the label surface side;
• a substrate that supports the protective layer and the optical plotting layer;
• and
• a guide track that is formed on the optical plotting layer so as to be intermittent in a guide direction,
• wherein heat sensitive material forming the optical plotting layer being formed at least on a plurality of concave portions of the guide track.