Method of manufacturing a stamper for formation of optical infor

Details Method of manufacturing a stamper for formation of optical infor Method of manufacturing a stamper for formation of optical infor

1989-05-02

1991-05-14

Niebling, John F.

Chemistry: electrical and wave energy

Processes and products

204 384, C25D 110

Patent

active

050153382

ABSTRACT:
A method for preparing a stamper comprises the steps of forming a first electro-conductive layer and a second electro-conductive layer on a photoresist layer carrying pits through a physical vapor deposition before the electroforming of a stamper layer. The second electro-conductive layer is effective for preventing the first electro-conductive layer from corroding during the electroforming step because of the active treatment solution for the electroforming and also avoids the corrosion of the first electro-conductive layer even in the storage period before the particular electroforming step.

REFERENCES:
patent: 4430401 (1984-02-01), Wilkinson
patent: 4474650 (1984-10-01), DeLaat

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