Optical disc and method for manufacturing the same

Details Optical disc and method for manufacturing the same Optical disc and method for manufacturing the same

2006-03-07

2006-03-07

Mulvaney, Elizabeth (Department: 1774)

Stock material or miscellaneous articles

Circular sheet or circular blank

C428S064400, C428S402000, C430S270110

Reexamination Certificate

active

07008682

ABSTRACT:
An optical disc is includes a recording layer, a reflective layer, and a protective layer provided, in that order, on one surface of a light-transmissive substrate and a hard coating layer having a thickness in the range of 1 to 5 μm on the other surface of the substrate. The hard coating layer is formed by applying and curing a solution comprising a hard coating agent containing colloidal silica and a UV-curable acrylic resin and a solvent containing propylene glycol monomethyl ether as a principal constituent. The hard coating layer contains 40 mg/cm3or less of residual solvent.

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