Apparatus for fabricating an optical information medium

Details Apparatus for fabricating an optical information medium Apparatus for fabricating an optical information medium

1997-05-22

1999-10-26

Dixon, Merrick

Plastic and nonmetallic article shaping or treating: processes

Optical article shaping or treating

Composite or multiple layer

264 133, 264 134, 264 136, 264 24, 264446, 264471, 264634, 264642, 430495, 430945, 430271, 430394, 427504, B29D 1100

Patent

active

059722509

ABSTRACT:
The disk-shaped optical information medium of this invention includes: a first substrate having a center hole; a second substrate having a center hole; and a radiation curable resin interposed between the first and second substrates for bonding together the first and second substrates, wherein the optical information medium further includes a stopper for preventing the radiation curable resin from protruding into the center holes of the substrates, and a space between the first and second substrates of at least a half of a clamp region for clamping the optical information medium is filled with the resin.

REFERENCES:
patent: 4670077 (1987-06-01), Peeters
patent: 5023167 (1991-06-01), Kalyanaraman et al.
patent: 5296340 (1994-03-01), Tsukada et al.
patent: 5470691 (1995-11-01), Arai et al.
patent: 5549952 (1996-08-01), Arai et al.
patent: 5705247 (1998-01-01), Arai et al.
Korean Patent Office Action in corresponding Korean Application No. 96-3660, dated Oct. 28, 1998 (4 pp.).

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