Method for manufacturing a replica stamper

Details Method for manufacturing a replica stamper Method for manufacturing a replica stamper

1995-11-20

1997-12-23

Hail, III, Joseph J.

Metal founding

Process

Disposition of a gaseous or projected particulate molten...

164 19, B22D 2300

Patent

active

056998481

ABSTRACT:
A method for forming a replica stamper for use in mass producing an optical disk, wherein the optical disk has a plurality of tracks arranged spirally or concentrically, and each of the tracks includes a recess and a protrusion for recording information signals thereon, comprises the steps of: (a) preparing a master stamper having a top surface and a flat bottom surface, wherein the top surface of the master stamper includes a plurality of tracks corresponding to the plurality of tracks of the optical disk; (b) depositing a buffer layer on the top surface of the master stamper; (c) forming a replica stamper on top of the buffer layer; (d) disengaging the master stamper from the buffer layer and the replica stamper; and (e) removing the buffer layer from the replica stamper.

REFERENCES:
patent: 5108668 (1992-04-01), Kallup

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