Substrate of optical disc

Details Substrate of optical disc Substrate of optical disc

G - Physics

11

B

42/2

G11B 7/24 (2006.01) G11B 7/253 (2006.01)

Patent

CA 2022027

ABSTRACT OF THE DISCLOSURE A substrate for an optical disc is disclosed, which comprises a transparent hydrocarbon resin having a softening point of no less than 100°C, the surface thereof having been contact treated with a fluorine-containing gas so that the treated surface has a contact angle with water of not more than 90° and the weight gain due to the treatment does not exceed 1% by weight. The substrate exhibits excellent adhesion to a recording layer formed thereon and excellent heat resistance.

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