Ultrathin optical recording medium with moisture barrier

Details Ultrathin optical recording medium with moisture barrier Ultrathin optical recording medium with moisture barrier

1986-05-02

1987-09-08

Kittle, John E.

Radiation imagery chemistry: process, composition, or product th

Laser beam

3461351, 346137, 428209, 428900, G01D 900, G01D 1524, B32B 300

Patent

active

046924027

ABSTRACT:
An optical data storage medium, such as a data card with a strip of optical data storage material, having a thickness approximately that of a credit card and one or more moisture barrier layers. One of the moisture barrier layers is an underlayer between substrate or card base and the storage material, while a second moisture barrier layer is one or more of the transparent laminating sheet and protective layers adhered above the storage material. The barrier layers may be any of the transparent materials, having a maximum moisture vapor transmission rate of 0.1 grams water vapor/100 inch square/mil/24 hours at 38 C and 90% relative humidity, such as polytrichlorofluoroethylene and polyvinylidene chloride. The underlayer may also be a nontransparent aluminum layer.

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