Optical recording medium, azo-type iron chelate coloring matter, and azo-type metal chelate coloring matter additive

An optical recording medium and metal chelate technology, which can be used in optical recording carriers, recording/reproducing by optical methods, data recording, etc., can solve the problems of insufficient light resistance of cyanine pigments, and achieve good high-density recording. , Excellent light resistance, good high-speed recording effect

Inactive Publication Date: 2008-08-06
CMC MAGNETICS CORPORATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the light resistance of the cyanine-based pigments used in the above-mentioned CD-R is not good enough

Method used

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  • Optical recording medium, azo-type iron chelate coloring matter, and azo-type metal chelate coloring matter additive
  • Optical recording medium, azo-type iron chelate coloring matter, and azo-type metal chelate coloring matter additive
  • Optical recording medium, azo-type iron chelate coloring matter, and azo-type metal chelate coloring matter additive

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach

[0173] Next, an embodiment of the present invention will be described using FIG. 1( a ), FIG. 1( b ), FIG. 2( a ), FIG. 2( b ), FIG. 3( a ), and FIG. 3( b ). 1 (a), FIG. 1 (b), FIG. 2 (a), FIG. 2 (b), FIG. A partial cross-sectional view of an example of the layer configuration of the media 100-600.

[0174] In addition, in the following description, for convenience of explanation, each figure of FIG. 1(a), FIG. 1(b), FIG. 2(a), FIG. 2(b), FIG. 3(a), and FIG. In the figure, the top and bottom of the figure are the top and bottom of the optical recording media 100 to 600, respectively, and the surfaces of the layers constituting the optical recording media 100 to 600 corresponding to these directions are the top and bottom of each layer, respectively.

[0175] The structure of the optical recording medium of the present invention includes at least a substrate, a recording layer, and a reflection layer. And, as mentioned above, the recording layer contains an organic pigment fo...

Embodiment

[0245] The present invention will be described in more detail below using examples, but the present invention is not limited to the following examples unless the gist of the present invention is exceeded.

[0246] [Experimental group 1: Synthesis of azo metal chelate pigment (additive)]

[0247] The azo metal chelate colorant additive used as an additive in each experimental group described later was synthesized by the following method.

[0248] In addition, in the following description, when describing the ligand which consists of an azo compound, the number of a corresponding azo compound may be added. For example, a ligand formed from an azo compound (I-1) is described as "ligand (I-1)".

[0249] In addition, in the following description, the number of the ligand and the atomic symbol of the metal ion may be recorded together to indicate the azo-based metal chelate colorant additive. For example, the azo metal chelate pigment additive composed of two ligands (I-1) and div...

Synthetic example 1

[0251] [Synthesis Example 1: (I-1) 2 (Fe 2+ ) Synthesis of pigment additives]

[0252] 2.63 g of an azo compound (I-1) represented by the following structural formula was dissolved in 100 ml of THF (tetrahydrofuran), and the residue was removed by filtration. Separately, 0.69 g of iron (II) chloride tetrahydrate was dissolved in 10 ml of methanol, and the residue was removed by filtration, and then this solution was added dropwise to the above-mentioned THF solution of the azo compound (I-1). Thereafter, 90ml of water was further added dropwise, the precipitated crystals were filtered, washed with THF, water, and methanol successively, and dried to obtain 1.99g of the target compound represented by the following structural formula (iron (2 valence of ligand (I-1) ) Pigment additive: (I-1) 2 (Fe 2+ ) Pigment additives).

[0253]

[0254] Azo compound (I-1)

[0255]

[0256] (I-1) 2 (Fe 2+ ) Pigment additives

[0257] Obtained (I-1) 2 (Fe 2+ ) The maximum absorpti...

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Abstract

The present invention provides light record medium, pigrantine pigment pigment and pigraine of nitrogen lines, and the color additives provided by the nitrogen system.Its optical resistance can achieve good high -speed records and good high -density records.The light record medium has a substrate, a record layer, and a reflex layer. The record layer is set on the above substrate and contains the puzzle of the optic can be recorded or regenerated by the light that can be recorded by the wavelength below 700nm.The recording layer contains any one of the pigraine additives of nitrogen chelating in the centered metal ions with any of the CU2+, FE2+and CO2+as a centered metal ion.

Description

technical field [0001] The invention relates to an optical recording medium, an azo iron chelate pigment and an azo metal chelate pigment additive. More specifically, the present invention relates to an optical recording medium corresponding to red laser light or blue laser light, and an azo-based iron chelate dye and an azo-based metal chelate dye additive used as an optical recording material thereof. Background technique [0002] Nowadays, various optical recording media such as CD-R / RW, DVD-R / RW, and MO can store large-capacity information and are easy to access randomly. Therefore, these optical recording media are used as external storage in information processing devices such as computers. The device has been widely recognized and popularized. Among these, organic dye-based optical recording media represented by CD-R and DVD-R are advantageous because they are low in cost and easy to manufacture. For DVD-R and DVD+R (hereinafter these are sometimes collectively refe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B41M5/26G11B7/244G11B7/24G11B7/24035G11B7/24038G11B7/2467G11B7/2472G11B7/249
CPCG11B7/246G11B7/2463G11B7/2467G11B7/2472G11B7/2475G11B7/248G11B7/249G11B7/2492G11B7/2531G11B7/2533G11B7/2534G11B7/2535G11B7/2536G11B7/256G11B7/259G11B2007/24612
Inventor 照田尚佐竹贤一内藤优子
Owner CMC MAGNETICS CORPORATION
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