Optical information recording medium

Details Optical information recording medium Optical information recording medium

G - Physics

11

B

352/32.4

G11B 7/24 (2006.01) G11B 7/007 (2006.01)

Patent

CA 1320573

ABSTRACT An optical information recording medium of the type wherein recorded data are reproduced by scanning them with a laser beam, which 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, wherein the information recordable region comprises a light transmitting substrate having a deformable surface, a light absorptive layer overlaying the deformable surface, to absorb the writing laser beam, and a light reflective layer overlaying the light absorptive layer, said deformable surface being deformable by energy generated upon absorption of the writing laser beam by the light absorptive layer, to form optically readable pits.

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