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High-density optical recording media

An optical recording medium, high-density technology, applied in the direction of optical record carriers, record carrier materials, etc., can solve problems such as low recording density

Inactive Publication Date: 2003-11-19
GIGASTORAGE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] JP 2640219 (Tokyo Electric Chemical Industry Co., Ltd., Japan) discloses the application of cyanine dyes in optical recording media, but due to the limitation of the chemical structure of the dyes, the disclosed optical recording media is only suitable for 780nm access systems and has a relatively low recording density medium

Method used

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  • High-density optical recording media

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] A circular polycarbonate substrate with a thickness of 0.6mm, an outer diameter of 120mm, and an inner diameter of 15mm was extruded by an extrusion molding machine, and had grooves (depth 170nm, half-width 350nm, bottom width 250nm, and groove pitch 740nm). At 25°C and a relative humidity of 50%, 1 ml of 2-(3'-(1", 3", 3"-trimethyl-6"-methoxy-benzo[e]indole )-propenyl)-1,3,3-trimethyl-6-methoxy-benzo[e]indolyl perchlorate (cyanine dye) in 2,2,3,3- A solution of 1.2% by weight in fluoropropanol was added dropwise on the inner ring of the above-mentioned substrate, while the substrate was kept rotating at a speed of 500 rpm for 2 seconds, and then the speed was increased to 1000, 2000 per minute in turn. and 5000 revolutions for 3 seconds each to obtain a uniform dye layer. The coated substrate was baked at 60° C. for 20 minutes to form a dry and uniform optical recording layer. A gold film of about 100nm is sputtered on the recording layer with a metal sputtering mach...

Embodiment 2

[0025] Divided by 2-(3'-(1"-ethyl-3",3"-dimethyl-6"-methoxy-benzo[e]indole)-propenyl)-1-ethyl- 3,3-Dimethyl-6-methoxyl-benzo[e]indolyl perchlorate replaces the dye used in Example 1, and all the others are prepared recording media by the method shown in Example 1 , and tested with the same test method, the results are shown in Table 2.

Embodiment 3

[0027] Divided by 2-(3'-(1"-propyl-3",3"-dimethyl-6"-methoxy-benzo[e]indole)-propenyl)-1-ethyl- 3,3-Dimethyl-6-methoxyl-benzo[e]indolyl perchlorate replaces the dye used in Example 1, and all the others are prepared recording media by the method shown in Example 1 , and tested with the same test method, the results are shown in Table 2.

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Abstract

The optical recording media comprises a basic material which is deposited with a recording layer on it. The recording layer includes at least one of the laser absorbing dyestuff listed in formula (I), of which Q is benzene ring or naphthalene ring replaced by C1-4 alkoxyl, R1 and R2 is C1-8 alkyl separately, Y is hydrogen or C1-4 alkoxy and X- is an anion.

Description

technical field [0001] The invention relates to an optical recording medium, and in particular to a high-density recordable optical recording medium. Background technique [0002] The organic materials currently used as the recording layer of CD-R can be mainly divided into three categories: cyanine dyes, phthalocyanine dyes and azo dyes. The common characteristics of these three types of dyes are: their The maximum absorption wavelength is between 650nm and 750nm. Its main function is to absorb 780nm laser and convert it into heat energy, so that the optical characteristics of the recording layer of the optical disc will change, so as to meet the reflectivity requirements of the optical disc specification (Red Book). Therefore, the organic material of the recording layer The main light absorption wavelength must avoid the main absorption range of laser light. Since the 1990s, in response to the trend of continuous expansion of data content, all major optical disc manufactu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G11B7/246
Inventor 颜光甫
Owner GIGASTORAGE CORP