Optical recording cards with non-recording reflective layer

Details Optical recording cards with non-recording reflective layer Optical recording cards with non-recording reflective layer

1987-03-31

1989-03-28

Bowers, Jr., Charles L.

Radiation imagery chemistry: process, composition, or product th

Imaged product

Multilayer

430 11, 430 12, 430 15, 430 16, 430153, 430156, 430141, 428201, 428203, 428204, 428206, 428913, 346 76L, 3461351, G03C 162, G03C 172, G01D 1514

Patent

active

048163627

ABSTRACT:
An optical recording material comprising (I) a substrate, (II) a recording layer provided on said substrate, the recording layer consisting of light transmissive portions and light screening portions, and (III) a reflective metallic thin film layer provided on the recording layer; as well as a process therefor. The invention also includes an optical card comprising the optical recording material provided on a card substrate. In the cases of the optical recording material and the optical card, it is possible to readily carry out high density recording, the alternation of written information is difficult, and the written information can be read out on a basis of the difference in light reflectivity.

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