Optical information recording medium

Details Optical information recording medium Optical information recording medium

1989-04-14

1990-07-10

Ryan, Patrick

Stock material or miscellaneous articles

Circular sheet or circular blank

Recording medium or carrier

428 65, 428209, 428457, 428913, 430945, 369288, 3692751, 346 76L, 3461351, B32B 302

Patent

active

049406183

ABSTRACT:
An optical information recording medium of the type wherein recorded data signals are reproduced by scanning them with a laser beam. The medium comprises a ROM region where optically readable pits are already formed and an information recordable region where optically readable pits can be formed by irradiation with a writing laser beam. The infomation recordable region comprises a light transmitting substrate having a deformable surface, a light absorptive layer overlaying the deformable surface, which absorbs the writing laser beam, and a light reflective layer overlaying the light absorptive layer. The deformable surface is deformable by energy generated upon absorption of the writing laser beam by the light absorptive layer, to thereby form optically readable pits.

REFERENCES:
patent: 4315269 (1982-02-01), Bloom et al.
patent: 4360908 (1982-11-01), Howe et al.
patent: 4398203 (1983-08-01), Cornet
patent: 4404656 (1983-09-01), Cornet
patent: 4405994 (1983-09-01), Cornet et al.
patent: 4577291 (1986-03-01), Cornet
patent: 4586165 (1986-04-01), Cornet et al.

Affiliated with

Also associated with

Rating

Optical information recording medium does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Optical information recording medium, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Optical information recording medium will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1720343