| 摘要 |
<p>A DVD which has a structure wherein a protective substrate (2) of a thickness of 0.6 mm is laminated on a recording substrate (1) of a thickness of 0.6 mm having an information recording layer, wherein the recording substrate (1) is made of a virgin resin of polycarbonate, and the protective substrate is made of a regenerated polycarbonate resin recovered from a waste CD or DVD. The above DVD is a laminated optical disc which is not made exclusively of a virgin resin, but is made by the use of a plastic recovered from a waste of a plastic product, and thus is reduced in the load on the environment.</p> |
