Optical information record medium

A recording medium, optical information technology, used in optical record carriers, data recording, information storage, etc.

Inactive Publication Date: 2005-03-30
CMC MAGNETICS CORPORATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because when the wavelength of the laser beam becomes longer, the recording material that was originally suitable for writing with a laser beam at a wavelength of 635nm will not be suitable for a laser beam at a wavelength of 650nm

Method used

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  • Optical information record medium
  • Optical information record medium
  • Optical information record medium

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0172] Example UV Spectrum Write Wavelength Reflectance Push-Pull Value I14 / I14H Vibration

[0173] (nm) (650nm)

[0174] CH 3 CN%%%

[0175] 1 577 for 66.4 0.29 0.45 8.2

[0176] 2 577 for 55.3 0.60 0.60 5.7

[0177] 3 577 for 47.5 0.43 0.61 6.5

Embodiment 1

[0181] Firstly, a transparent substrate is provided, which is an optical disc made of polycarbonate, and the optical disc has a threaded groove, the track pitch is 0.74 μm, the outer diameter of the optical disc is 120 mm, and the thickness is 0.6 mm.

[0182] Next, 5.0 g of the compound of molecular formula [1-19] was dissolved in 100 ml of 2,2,3,3-tetrafluoro-1-propanol (TFP), stirred at room temperature for 5 hours, and passed through a 0.2 μm After filtering with polytetrafluoroethylene (PTFE) membrane, it is prepared into a dye solution.

[0183] By means of spin coating, the rotational speed was set at 3000 rpm, a layer of dye was coated on the substrate, and then dried at 70° C. for 20 minutes to form a recording layer with a thickness of 100 nm.

[0184] Then, in the mode of sputtering on the recording layer, a reflective layer of gold or silver is plated, wherein, argon is used as the gas required for sputtering, and the electric power required for sputtering is 1.5kw...

Embodiment 2

[0188] In this embodiment, the optical disc is prepared according to the method of embodiment 1, except that the dye substance of the molecular formula [1-21] is replaced in the embodiment 1. In this embodiment, the optical parameters of the recording layer are measured using the instrument used in Embodiment 1, and the measured results are recorded in Table 1. In this embodiment, the values ​​of reflectivity, push-pull value and modulation degree are quite high, however, the vibration value is very low.

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Abstract

The optical information record medium has one record layer, which records or reads under the action of the laser beam 620-690 nm wavelength. The record layer includes at least one kind of non-symmetrical trimethine cyanine dye.

Description

technical field [0001] The present invention relates to an optical information recording medium, in particular to an optical recording layer comprising at least one asymmetric trimethine-cyanine dye with an electron-withdrawing substituted group. Information recording medium. Background technique [0002] In today's technology, the optical information recording medium has the function of recording once after laser irradiation. In the case of a write once compact disc (CD-R) information recording medium, a recording layer comprising an organic dye, a reflection layer and a protective layer are sequentially formed into thin sheets on a transparent substrate . Wherein, when the laser light with a wavelength between 780nm and 830nm is irradiated on the recording layer of the optical disc, the laser will cause the dyes in the recording layer to decompose or deform, so as to form recorded information on the optical disc. Using the difference in reflection between recorded and u...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G11B7/246
CPCG11B7/2472G11B7/2535G11B7/259G11B7/2531G11B7/2534G11B7/256G11B7/2533G11B2007/24612Y10T428/21
Inventor 蔡礼全叶素敏张高明邱文彬
Owner CMC MAGNETICS CORPORATION
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