Optical information card

Details Optical information card Optical information card

1990-03-08

1991-06-11

Bowers, Jr., Charles L.

Radiation imagery chemistry: process, composition, or product th

Radiation sensitive product

430270, 430945, 430273, 430271, 427164, 427166, 428 64, G03C 100

Patent

active

050231677

ABSTRACT:
Provided is an optical information card having a particular structure. The card is comprised of four different layers, i.e., a card substrate, a recording layer which is formed on one side of the card substrate and which comprises a naphthalocyanine compound, a polyvinyl alcohol coating directly over the information layer, and a transparent protective layer over the polyvinyl alcohol layer. This structure offers a very sensitive and useful optical information card which can be easily manufactured while maintaining the integrity of the information layer, and which permits one to realize the advantage of using a naphthalocyanine information layer in a card format.

REFERENCES:
patent: 4584259 (1986-04-01), Mayer et al.
patent: 4735889 (1988-04-01), Namba et al.
patent: 4920359 (1990-04-01), Arai et al.

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