Optical data storage card

Details Optical data storage card Optical data storage card

G - Physics

11

B

352/57

G11B 7/24 (2006.01) G11B 7/248 (2006.01)

Patent

CA 2039573

Abstract of the Disclosure The invention discloses an optical data storage card which has a laminated constitution in the order: transparent substrate, recording layer and protective layer, and is prepared by using in the recording layer a colorant having a melting point in the range of 150 to 300°C, a decomposition initiating temperature in the range of 200 to 350°C, and .lambda.max in the range of 730 to 790 nm. The card has a high sensitivity, small distortion in record, high durability, and its quality becomes more stable as compared with conventional cards.

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