Double-sided-multi-layered optical disc and a method for manufac

Details Double-sided-multi-layered optical disc and a method for manufac Double-sided-multi-layered optical disc and a method for manufac

1996-08-28

1998-02-10

McPherson, John A.

Radiation imagery chemistry: process, composition, or product th

Imaging affecting physical property of radiation sensitive...

Making named article

43027011, 430945, 428 652, 156 74, 1562755, 156242, 369284, G11B 726, G11B 724

Patent

active

057167613

ABSTRACT:
A method for manufacturing a double-sided-multi-layered optical disc. An intermediate substrate having pits on both the major surfaces is previously prepared as well as first and second substrates. The method rotates the first substrate, the intermediate substrate and the second substrate with respect to the common center thereof so as to form unhardened radiation setting resin layers between adjacent substrates so that thicknesses of the unhardened resin layers are adjusted to predetermined values, and then the method irradiates a radiation onto the unhardened resin layer so as to harden the unhardened resin layers to solid resin layers.

REFERENCES:
patent: 4179532 (1979-12-01), Soeding
patent: 5126996 (1992-06-01), Iida et al.
patent: 5378517 (1995-01-01), Suzuki et al.

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