Information signal recording medium

Details Information signal recording medium Information signal recording medium

1985-06-06

1986-11-04

Herbert, Thomas J.

Stock material or miscellaneous articles

Structurally defined web or sheet

Discontinuous or differential coating, impregnation or bond

428195, 428244, 428334, 428515, 428518, B32B 516, B32B 2708

Patent

active

046210075

ABSTRACT:
An information signal recording medium comprises a core material made of a non-conductive material, and a surface material made of a conductive material and in close adherence with at least one surface of the core material. Variations in geometrical configuration in accordance with information signals to be recorded on the recording medium are compression molded on the surface material. The materials constituting the surface material and the core material are selected so that a ratio V.sub.C /V.sub.N between a melt viscosity V.sub.C of the surface material and a melt viscosity V.sub.N of the core material at a temperature and a shear rate at the time of the compression molding is less than or approximately equal to 1.6.

REFERENCES:
patent: 4410584 (1983-10-01), Toba et al.
patent: 4429216 (1984-01-01), Brigham

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