Method for fabricating a read only optical disc

Details Method for fabricating a read only optical disc Method for fabricating a read only optical disc

1994-05-16

1995-12-26

Bowers, Jr., Charles L.

Radiation imagery chemistry: process, composition, or product th

Imaging affecting physical property of radiation sensitive...

Making named article

430962, 430945, 355 77, 355 50, G11B 726

Patent

active

054787017

ABSTRACT:
A method and apparatus for fabricating a read only optical disc enables mass production of a read only optical disc at low cost in a short period of time. The method includes a source disc fabricating step and a duplicating step of duplicating information of the source disc to a target disc. The source disc has a transparent substrate and a predetermined opaque write layer coated thereon, and write holes for transmitting light on the write layer, thereby storing information according to the arrangement of the write holes. The target disc has a photochromic write layer which has different absorption coefficients before and after the duplication. Here, the method uses an optical writing apparatus for optically forming the write holes of the source disc and a duplicating apparatus for optically duplicating the information from the source disc to the target disc.

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English Language Abstract of JP 3-17443, Yamamuto et al., (Jan. 1991).

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