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Optical information recording medium and azo metal complex dye

A technology of metal complexes and recording media, which is applied in the direction of complex metal compounds of azo dyes, azo dyes, monoazo dyes, etc. It can solve the problems of unsatisfactory films and achieve high solubility, excellent light fastness, and light fastness. excellent effect

Inactive Publication Date: 2008-04-02
FUJIFILM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As a result, all films were unsatisfactory in both light resistance and recording / reproducing properties (recording sensitivity, 2T CNR)

Method used

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  • Optical information recording medium and azo metal complex dye
  • Optical information recording medium and azo metal complex dye
  • Optical information recording medium and azo metal complex dye

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach (1

[0110] Embodiment (1): An optical information recording medium comprising a dye-containing WORM-type recording layer and a cover layer having a thickness of 0.01 to 0.5 mm sequentially disposed on a substrate having a thickness of 0.7 to 2 mm. Embodiment (2): An optical information recording medium comprising a dye-containing WORM-type recording layer and a protective substrate having a thickness of 0.1 to 1.0 mm sequentially disposed on a substrate having a thickness of 0.1 to 1.0 mm.

[0111] In the embodiment (1), it is preferable that the substrate has a pre-groove with a track pitch of 50 to 500 nm, a groove width of 25 to 250 nm, and a groove depth of 5 to 150 nm.

[0112] In the embodiment (2), it is preferable that the substrate has a pre-groove with a track pitch of 200 to 500 nm, a groove width of 50 to 300 nm, a groove depth of 30 to 150 nm, and a wobble amplitude of 5 to 50 nm .

[0113] [Optical Information Recording Medium of Embodiment (1)]

[0114] The optica...

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Abstract

An optical information recording medium having a WORM-type recording layer on which information can be recorded by irradiation with a laser light having a wavelength of 440 nm or less, wherein the WORM-type recording layer contains at least one azo-metal complex dye derived from a metal ion (or a metal oxide ion) and an azo dye represented by the following structural formula (I-1) or (I-2). In the structural formulae (I-1) and (I-2), Q represents a carbocyclic group or a heterocyclic group, Q 2 and Q 3 each represent an atomic group forming a nitrogen-containing heterocycle, and R 2 represents a substituent.

Description

technical field [0001] The present invention relates to an optical information recording medium for recording / reproducing information using laser light, and more particularly to an azo-metal complex compound having very excellent light resistance, suitable for recording / reproducing information using short-wavelength laser light having a wavelength of 440 nm or less The heating mode-type optical information recording medium, and the azo-metal complex dye suitable for the recording layer of the optical information recording medium. Background technique [0002] Recently, high-quality television broadcasts and networks such as the Internet have gained rapid popularity. Furthermore, in view of upcoming HDTV (High Definition Television) broadcasting, there is an increasing need for a large-capacity recording medium that can easily record image information at low cost. Although CD-R and DVD-R capable of high-density recording using visible laser light (630 to 680 nm) have been es...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G11B7/246C09B45/00G11B7/24035G11B7/24076G11B7/24079G11B7/24085G11B7/2467G11B7/249G11B7/2495G11B7/2498G11B7/254G11B7/2578
CPCG11B2007/2571G11B7/2467G11B2007/25708G11B7/2578G11B7/2495G11B7/254G11B7/259G11B2007/25715C09B29/0037G11B7/256G11B7/2498G11B7/2534G11B2007/25706G11B7/2492C09B45/34G11B7/246C09B45/48B41M5/26
Inventor 渡边康介片山和俊桥爪太朗
Owner FUJIFILM CORP