Patent ID: 7114947

Claim:
A disk molding apparatus for forming an optical disk in a disk molding process, wherein the apparatus reduces the edge wedge effect in the molded optical disk, the disk molding apparatus comprising: a disk substrate cavity for forming a disk substrate therein, the disk substrate cavity including a first major surface, a second major surface which opposes the first major surface, and an outer edge; a channel mechanism in fluid communication with the disk substrate cavity for allowing disk molding material to enter the disk substrate cavity; and a stamper including an informed on surface and a back surface, wherein the information surface of the stamper forms the first major surface of the disk substrate cavity, and the information surface produces a formatted surface relief pattern in the disk substrate during the molding process, and wherein the stamper includes a lip formed on an outer perimeter of the back surface of the stamper which causes flexing during the molding process to counter the molding edge wedge effect.