Matrixing apparatus and method for use in the manufacture of mol

Details Matrixing apparatus and method for use in the manufacture of mol Matrixing apparatus and method for use in the manufacture of mol

1983-06-30

1984-02-14

Tufariello, T. M.

Chemistry: electrical and wave energy

Processes and products

204281, C25D 110, C25D 1712

Patent

active

044314876

ABSTRACT:
In order to provide an improved seal between matrixes and their replicas, as well as eliminating or substantially reducing the problem of premature separation of the replicas from the matrixes, a circumferential spiral groove of a substantially rectangular configuration is cut into the outermost circumferential area of the matrix. The rectangular spiral groove is cut beyond the portion of the matrix which will be used as the molding surface of the stamper. The rectangular groove is substantially larger than the V-shaped groove of audio records and is much larger than the V-shaped grooves used on high density information discs. Because of the larger size and the substantially rectangular geometric configuration of the grooves, the rectangular spiral groove forms a highly effective seal between the matrix and the replica. The electrolyte seal between the replica and the matrix can be even further improved by forming a spiral rectangular groove at the center portion of the matrix in the area which will be removed during the final finishing of the stampers.

REFERENCES:
patent: 2018471 (1935-10-01), Russell
patent: 3227634 (1966-01-01), Rinzema
patent: 3956075 (1976-05-01), Rohwer
patent: 4400245 (1983-08-01), Prusak

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