WORM OPTICAL RECORDING MEDIUM
First Claim
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1. A write-once-read-many optical recording medium, comprising:
- a support substrate; and
a recording layer and a layer adjacent to the recording layer on the support substrate, the recording layer containing an oxide of one of a metal and a metalloid as a principal component,wherein the recording layer includes a region where a constituent element of the adjacent layer is dispersed, andrecording and reproduction are performable with laser light of a blue wavelength region.
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Abstract
A write-once-read-many optical recording medium is disclosed that includes a support substrate; a recording layer on the support substrate, the recording layer containing an oxide of one of a metal and a metalloid as a principal component; and a layer adjacent to the recording layer. The recording layer includes a region where a constituent element of the adjacent layer is dispersed. Recording and reproduction are performable with laser light of a blue wavelength region.
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Citations
48 Claims
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1. A write-once-read-many optical recording medium, comprising:
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a support substrate; and a recording layer and a layer adjacent to the recording layer on the support substrate, the recording layer containing an oxide of one of a metal and a metalloid as a principal component, wherein the recording layer includes a region where a constituent element of the adjacent layer is dispersed, and recording and reproduction are performable with laser light of a blue wavelength region. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10-18. -18. (canceled)
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19. A write-once-read-many optical recording medium, comprising:
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a support substrate; and a recording layer and a layer adjacent to the recording layer on the support substrate, the recording layer containing an oxide of one of a metal and a metalloid and a simple substance of at least one element M as a principal component, wherein the recording layer includes a region where a constituent element of the adjacent layer is dispersed, recording and reproduction are performable with laser light of a blue wavelength region, and the at least one element M reinforces a light absorbing function with respect to the laser light. - View Dependent Claims (20, 21, 22, 23, 24, 25, 26, 27)
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28-45. -45. (canceled)
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46. A write-once-read-many optical recording medium, comprising:
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a support substrate; and a recording layer on the support substrate, wherein recording and reproduction are performable with laser light of a blue wavelength region, the recording layer includes an M element dispersion region formed of at least one element M reinforcing a light absorbing function with respect to the laser light, the at least one element M being buried in the recording layer after formation of the recording layer, and the recording layer is one of (a) a recording layer containing an oxide of one of a metal and a metalloid as a principal component; (b) a recording layer containing an oxide of one of a metal and a metalloid and a simple substance of an element of the oxide which element is bonded to oxygen as a principal component; (c) a recording layer containing an oxide of one of a metal and a metalloid and the simple substance of the at least one element M as a principal component; (d) a recording layer containing an oxide of one of a metal and a metalloid, the simple substance of the at least one element M, and an oxide of the at least one element M as a principal component; and (e) a recording layer containing an oxide of one of a metal and a metalloid, a simple substance of an element of the oxide which element is bonded to oxygen, the simple substance of the at least one element M, and an oxide of the at least one element M as a principal component. - View Dependent Claims (48)
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47. (canceled)
Specification