Optical information medium, and method and apparatus for fabrica

Details Optical information medium, and method and apparatus for fabrica Optical information medium, and method and apparatus for fabrica

1996-02-09

1997-10-28

Ryan, Patrick

Stock material or miscellaneous articles

Circular sheet or circular blank

Recording medium or carrier

428 641, 428 642, 428 644, 428156, 428282, 428323, 428409, 428414, 428448, 4302701, 430917, 369272, 3692751, 3692754, B32B 900

Patent

active

056816340

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.

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