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Optical information recording medium and method of recording information

A technology for recording media and optical information, applied to optical recording media, optical recording/reproduction, data recording, etc., which can solve problems such as manufacturing difficulties

Inactive Publication Date: 2008-12-03
FUJIFILM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the method for forming the special recording layer described in Patent Document 10 is different from the method for forming the recording layer in conventional CD-R, DVD-R, etc., and it is difficult to manufacture.

Method used

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  • Optical information recording medium and method of recording information
  • Optical information recording medium and method of recording information
  • Optical information recording medium and method of recording information

Examples

Experimental program
Comparison scheme
Effect test

Synthetic example -1

[0173]

Synthetic example -2

[0175]

Synthetic example -3

[0177]

[0178] [Q 33 : Atomic group forming a nitrogen-containing heterocycle]

[0179] As a conventional method for obtaining a metal azo chelate dye by reacting an azo compound and a metal ion (or a metal oxide ion), in an organic solvent, water, or a mixed solution thereof in the presence of a base can be mentioned. A method of stirring azo compounds and metal salts (metal complexes, metal oxide salts). However, the type of metal salt, the type of base, the type of organic solvent or its mixed solution, the reaction temperature, and the like are not limited. An example of the synthesis method of the azo metal complex dye that can be used in the present invention is shown below.

[0180] The synthesis example of the azo metal complex dye consisting of the above-mentioned azo compound and a metal ion (or metal oxide ion) is shown below. Hereinafter, methanol is shown as the reaction solvent, but the reaction solvent is not limited to methanol. As the reaction solvent,...

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PUM

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Abstract

The invention provides an optical information recording medium of a blue light structure which gives play to excellent recording characteristics when recording and with easy manufacturing. The optical information recording medium comprises a reflective layer, a recording layer, a barrier layer, and a cover layer in turn on a surface of a support. The recording layer includes at least an azopigment compound in group selection composed of an azo compound and an azo metal coordination compound including an azo compound and a metal ion or a metal oxide ion, wherein the extinction coefficient of the azopigment compound is in the range of 0.15-0.3 at the wavelength of 405 nm. A layer is formed between the barrier layer and the cover layer, which implements curingprocess on the an ultraviolet radiation-curable composition, having a glass transition temperature of equal to or lower than 25 DEG C.

Description

technical field [0001] The present invention relates to an optical information recording medium capable of recording and reproducing information using short-wavelength laser light, and more specifically, to an optical information recording medium of a Blu-ray system. Furthermore, the present invention relates to an information recording method for improving the optical information recording medium. Background technique [0002] Conventionally, as an optical information recording medium that can record information only once by a laser, a write-once CD (CD-R) and a write-on DVD (DVD-R) are known. Information recording on CD-R is performed by laser light in the near-infrared region (usually about 780 nm wavelength), whereas information recording on DVD-R is performed by visible laser light (approximately 630-680 nm). Compared with CD-R, DVD-R uses laser light of shorter wavelength as recording laser light, so it has the advantage of being able to record at high density compare...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G11B7/242G11B7/246G11B7/252G11B7/256G11B7/24G11B7/24035G11B7/24056G11B7/24079G11B7/2467G11B7/249G11B7/254G11B7/257
CPCG11B7/2467G11B7/256G11B7/24079G11B7/007G11B7/252G11B7/242
Inventor 渡边康介片山和俊高桥庆太桥爪太朗堀米洁
Owner FUJIFILM CORP
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