Patent ID: 6365329
Filing Date: 2002-04-02
Classification: B29D,G11B

Abstract:
A method comprising:providing a master disk, the master disk including a photoresist information layer; making a first generation stamper from the master disk using a first photo polymerization process comprising depositing a first thin nickel layer onto the photoresist information layer, positioning a first photopolymer layer between the first thin nickel layer and a first support layer, curing the first photopolymer layer, and separating the first photopolymer layer from the first thin nickel layer forming a first photopolymer information layer, wherein separating the first photopolymer layer from the first thin nickel layer is non-destructive to the master disk, making a second generation stamper from the first generation stamper using a second photo polymerization process comprising depositing a second thin nickel layer onto the first photopolymer information layer, positioning a second photopolymer layer between the second thin nickel layer and a second support layer, curing the second photopolymer layer, and separating the second photopolymer layer from the second thin nickel layer forming a second photopolymer information layer, wherein separating the second photopolymer layer from the second thin nickel layer is non-destructive to the first generation stamper, and making a third generation stamper from the second generation stamper using a third process comprising coating the second photopolymer information layer with a first metal layer, coating the first metal layer with a second metal layer to form a stamper assembly, and separating the first and second metal layers from the stamper assembly to form the third generation stamper, wherein separating the first and second metal layers from the stamper assembly is nondestructive to the second generation stamper.