Method of manufactureing a record matrix

Details Method of manufactureing a record matrix Method of manufactureing a record matrix

1978-12-22

1980-02-26

Tufariello, T. M.

Chemistry: electrical and wave energy

Processes and products

106 127, 427306, 427426, C25D 110, C25D 120, C23C 302, C23C 700

Patent

active

041905032

ABSTRACT:
In manufacturing a record matrix from a lacquer master having a sound groove in a surface thereof, a basic reduction solution containing borohydride compound and an acidic metal salt solution containing nickel salt, ammonium salt and lactic acid are sprayed against the surface of the master having the sound groove for effecting the electroless plating thereon of a nickel surface metal layer having thereon a projection strip coincident with the sound groove, a reinforcing layer is formed over the surface metal layer and its reinforcing layer are peeled off from the lacquer master along the boundary therebetween to provide the record matrix.

REFERENCES:
patent: 2075646 (1937-03-01), Hewitt
patent: 2822294 (1958-02-01), Gutzeit
patent: 2837445 (1958-06-01), Talmey
patent: 2956900 (1960-10-01), Carlson
patent: 3672939 (1972-06-01), Miller
patent: 3674517 (1972-07-01), Miller
patent: 3723155 (1973-03-01), Greenberg et al.
patent: 3723158 (1973-03-01), Miller

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