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Optical information recording medium and optical information recording method

A technology of optical information and recording media, applied in the direction of optical recording carrier, temperature recording method, recording carrier material, etc.

Inactive Publication Date: 2007-10-31
FUJIFILM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the above-mentioned CD-R and DVD-R which can perform high-density recording by using visible laser light (630 to 680 nm) as the recording laser light have secured their own positions as large-capacity recording media to a certain extent, they cannot be considered as capable of Sufficiently high recording capacity to respond to future needs

Method used

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  • Optical information recording medium and optical information recording method
  • Optical information recording medium and optical information recording method
  • Optical information recording medium and optical information recording method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-1 to 1-15

[0224]

[0225] (manufacturing of substrate)

[0226] An extruded polycarbonate resin substrate was prepared, which had a thickness of 1.1 mm, an outer diameter of 120 mm, and an inner diameter of 15 mm, and had a spiral pregroove (track pitch: 320 nm, groove width: groove upper width 120 nm, groove Depth: 35nm, groove inclination: 65°, swing amplitude: 20nm). Control of dies used in extrusion with laser cutting (351nm).

[0227] (Formation of light reflection layer)

[0228] An APC light reflective layer (Ag: 98.1% by mass, Pd: 0.9% by mass, Cu: 1.0% by mass) was formed on the substrate as vacuum deposition with a thickness of 100 nm by DC sputtering by Unaxis Cube in an Ar atmosphere Floor. The thickness of the light reflection layer is adjusted by controlling the sputtering time.

[0229] (Formation of write-once recording layer)

[0230] Each of the compounds (S-1) to (S-15) shown in Table 1 was added in an amount of 2 g to 100 ml of 2,2,3,3-tetrafluoropropanol and di...

Embodiment 2-1 to 2-10

[0238] Optical discs were prepared in the same manner as in Examples 1-1 to 1-15, except that compounds (S-1') to (S-10') shown in Table 2 were used instead of compound (S-1 ) to (S-15).

Embodiment 1-16 to 1-30

[0246]

[0247] (manufacturing of substrate)

[0248] An extruded polycarbonate resin substrate was prepared having a thickness of 0.6 mm, an outer diameter of 120 mm, an inner diameter of 15 mm, and a spiral pregroove (track pitch: 400 nm, groove width: 170 nm, groove depth: 100 nm , Groove inclination: 65°C, swing amplitude: 20nm). Control of dies used in extrusion with laser cutting (351nm).

[0249] (Formation of write-once recording layer)

[0250] Each of the compounds (S-1) to (S-15) shown in Table 1 was added in an amount of 2 g to 100 ml of 2,2,3,3-tetrafluoropropanol and dissolved therein, Thus, a dye-containing coating solution was prepared. The dye-containing coating solution thus prepared was coated on a substrate using a spin coating technique under the condition of 23° C.-50% RH as the number of rotations was increased from 300 rpm to 4,000 rpm. By allowing the applied coating solution to stand at 23° C. and 50% RH for 1 hour, a write-once recording layer ...

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Abstract

Provided is an optical information recording medium, comprising on a substrate a recording layer containing a dye compound having a specific structure. An optical information recording method, comprising recording information on the optical information recording medium by irradiation with laser light of a wavelength of 550 or shorter or 440 nm or shorter.

Description

technical field [0001] The present invention relates to an optical information recording medium and an optical information recording method capable of recording and reproducing information using laser light, and to novel compounds suitable for use in such media and methods. More specifically, the present invention relates to a heating mode optical information recording medium suitable for recording information by using laser light having a short wavelength of 550 nm or less (or 440 nm or less). Background technique [0002] Hitherto, optical information recording media (optical discs) in which information can be recorded only once using laser light are known. Such optical discs are also referred to as write-once compact discs (so-called CD-Rs), and they have a typical structure in which recording layers containing organic dyes, made of metal such as A light reflection layer formed of gold, and a protective layer formed of resin. Information recording on the CD-R is perform...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B41M5/26G11B7/244G11B7/24C09B69/02G11B7/24073G11B7/24079G11B7/24085G11B7/246G11B7/2542
Inventor 渡边哲也高桥庆太片山和俊
Owner FUJIFILM CORP
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