G - Physics – 11 – B
Patent
G - Physics
11
B
G11B 7/24 (2006.01) G11B 7/257 (2006.01)
Patent
CA 2333093
A method for forming a protective barrier layer between the active dye layer and the disc substrate during production of an optical memory disc is provided wherein a pre-treatment/pre-coat solution is applied to the disc substrate. This pre-treatment/pre-coat solution includes a surface modifier having an index of refraction approximately equal to that of the disc substrate. Surface modifiers utilized in this pre-treatment/pre-coat solution include poly vinyl alcohol, poly alpha methyl styrene, cellulose acetate, poly vinyl butyral and nitrocellulose.
L'invention concerne un procédé permettant la formation d'une couche barrière protectrice entre la couche de colorant actif et le substrat du disque lors de la production d'un disque à mémoire optique. Ce procédé consiste à appliquer une solution de pré-traitement/pré-revêtement sur le substrat de disque. La solution de pré-traitement/pré-revêtement comprend un modificateur de surface présentant un indice de réfraction approximativement équivalent à celui du substrat du disque. Les modificateurs de surface utilisés dans cette solution de pré-traitement/pré-revêtement comprennent l'alcool polyvinylique, le poly-alpha-méthylstyrène, l'acétate de cellulose, le polyvinylbutyral et la nitrocellulose.
Sim & Mcburney
Tapematic S.p.a.
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