Roll stamper for molding substrate used for optical recording me

Details Roll stamper for molding substrate used for optical recording me Roll stamper for molding substrate used for optical recording me

1990-04-26

1991-09-17

Seidel, Richard K.

Metal fusion bonding

Process

Encasing a rodlike core within a substantially coextensive...

264106, 264107, B29D 1700

Patent

active

050487450

ABSTRACT:
A roll stamper for continuously preparing a substrate used for optical recording mediums, having a convexity and concavity preformat pattern, is prepared by a process comprising the steps of forming a low-melting metal layer on a roll substrate, and forming an auxiliary layer comprising a material different from that of a stamper, on the back of the stamper having on its surface a pattern corresponding with a convexity and concavity preformat pattern. The stamper is overlaid on the roll substrate in such a manner that the low-melting metal layer comes into contact with the auxiliary layer, and thereafter the low-melting metal layer is melted so that the stamper is fixed to the roll substrate.

REFERENCES:
patent: 4408319 (1983-10-01), Tsunoda
patent: 4565772 (1986-01-01), Takeoka et al.
patent: 4836874 (1989-06-01), Foster
patent: 4845000 (1989-06-01), Takeoka et al.
patent: 4968370 (1990-11-01), Watkins

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