Image forming and data storage

Radiation imagery chemistry: process – composition – or product th – Radiation sensitive product

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Details

430461, 430945, 428900, 3461351, G01D 900, G11B 724, G03C 172

Patent

active

047865857

ABSTRACT:
A method of forming an image and a radiation-sensitive medium suitable for carrying an image is disclosed. The medium comprises a substrate having a surface structure comprising grooves with a depth of 20 to 100 nanometers. At or close to the surface structure there is a layer of radiation-responsive material which is such that irradiation of selected parts of the structure with radiation of a predetermined polarization causes radiation to be absorbed at the irradiated parts of the surface so that corresponding areas of the radiation-responsive layer are affected in a way which makes such areas distinguishable from the remaining, non-irradiated areas of the radiation-responsive layer. An image and/or data may be stored in such a medium in analogue, digital or pictorial form, or in a combination of any two or all three of these forms. The invention also provides primary and secondary pre-formed data carrying media, the secondary media being replicated from the primary media. A primary pre-formed data carrying medium is formed by selectively irradiating a radiation-sensitive medium of the invention so as to form an image representative of a predetermined amount of data.

REFERENCES:
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patent: 4266009 (1981-05-01), Veda et al.
patent: 4359750 (1982-11-01), Howe
patent: 4390600 (1983-06-01), Ohta et al.
patent: 4463089 (1984-07-01), Bouldin
patent: 4480302 (1984-10-01), Kalk et al.
patent: 4499178 (1985-02-01), Wada et al.
patent: 4616237 (1986-10-01), Pettigrew et al.

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