OPTICAL RECORDING MEDIUM
PURPOSE:To prevent spontaneous degradation and to enhance reliability of medium by employing a material, hard to be decomposed, in a recording layer. CONSTITUTION:Polycarbonate is employed in a substrate 1 and a pigment hard to be decomposed, i.e., a phthalocyanine pigment shown by formula I, is emp...
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Main Authors | , |
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Format | Patent |
Language | English |
Published |
02.07.1992
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Subjects | |
Online Access | Get full text |
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