Patent ID: 7957252
Filing Date: 2011-06-07
Classification: B41J,G11B

Abstract:
1. An optical disc on which a visible image can be formed by irradiation of laser light, the optical disc comprising: a logo area, on which visible information is indicated; a pre-pit signal area; and an image forming area, on which a visible image can be formed by irradiation of laser light, wherein: logo area, the pre-pit signal area and the image forming area are provided in this order from an inner circumference of the optical disc; an outer circumference of the logo area is positioned closer to an outer circumference of the optical disc than an inner circumference of the pre-pit signal area; the pre-pit signal area generates a pre-pit signal including information for image forming; the image forming area is positioned at a deeper level than the logo area; and the pre-pit signal area is positioned at a deeper level than the logo area.