Optical disc and method for manufacturing the same
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United States of America Patent
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Oct 20, 1998
Grant Date -
N/A
app pub date -
Aug 28, 1996
filing date -
Aug 30, 1995
priority date (Note) -
Expired
status (Latency Note)
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Abstract
An optical disc has a pair of light-transmissible circular substrates each having an inner non-data region disposed around a center hole thereof, a data region disposed around the inter non-data region for bearing signals corresponding to information to be recorded and an outer non-data region disposed around the data region which are formed on a major surface of the substrate. The optical disc has a reflective layer formed on the data region and a protective layer made of an ultraviolet ray setting resin containing metal ions formed on the reflective layer. The optical disc has an adhesive layer made of an adhesive composition containing an ultraviolet ray setting component and an anaerobic hardening component disposed between the protective layers of the circular substrates for adhering the circular substrates.
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