Patent ID: 7859983

Claim:
The An optical disk comprising: a disk substrate having a top surface; a disk sheet lamination on said disk substrate; wherein said disk sheet lamination is formed by a plurality of disk sheets, each of the disk sheets having a recording face on a front surface, and a back surface that is opposite to the front surface, said back surface is a planar surface; wherein the recording face on the front surface is arranged so as to include one of recessed pits or recessed tracks therein for tracking; wherein said plurality of disk sheets are laminated in such a manner that between adjacent two disk sheets, the back surface of one of the disk sheets faces the front surface of the other disk sheet; wherein between the disk substrate and the disk sheet and between adjacent disk sheets, an adhesive layer made up of ultraviolet ray curing resin, is formed; and wherein the front surface including the recording face of a given disk sheet that is located closest to the disk substrate, is directly adhered to the disk substrate top surface.