Information-recording medium

Details Information-recording medium Information-recording medium

1993-02-10

1994-05-24

Ryan, Patrick J.

Stock material or miscellaneous articles

Circular sheet or circular blank

Recording medium or carrier

428 65, 428689, 428699, 428913, 430945, 3692752, 346 76L, 3461351, B32B 302

Patent

active

053147340

ABSTRACT:
An information recording medium which is superior in record/read-out characteristics, high in sensitivity and good in stability can be provided at a low cost by using, as an information-recording medium in which recording is carried out due to change in atomic arrangement upon irradiation with a laser beam, an information-recording medium comprising substrates 1, 1' , recording layers 2, 2' changing in atomic arrangement upon irradiation with a recording energy beam, and reflective layers which are provided contiguous to the recording layers and the recording layer has an average composition represented by A.sub.w D.sub.x Sb.sub.y Se.sub.z (wherein w, x, y and z are in the ranges of 0.ltoreq.w.ltoreq.30, 3.ltoreq.x.ltoreq.57, 3.ltoreq.y.ltoreq.57 and 40.ltoreq.z.ltoreq.90 in atomic percent, D represents at least one element of Sn, In, Ge, Pb, Si, Bi, Ga, Au, Ag and Cu and A represents an element other than Sb, Se, the elements represented by D and rare gases).

REFERENCES:
patent: 4668573 (1987-05-01), Terao et al.
patent: 4866672 (1989-09-01), Terao et al.
patent: 4954379 (1990-09-01), Nishida et al.
patent: 5011723 (1991-04-01), Harigaya et al.
patent: 5095479 (1992-03-01), Harigaya et al.
patent: 5100700 (1992-03-01), Ide et al.

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