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Optical recording medium-producing sheet and optical recording medium

A technology for optical recording media and sheets, which is applied in the field of optical recording media manufacturing sheets for recording media, can solve problems such as inability to reproduce recorded information correctly, and achieve the effects of suppressing degradation, reducing cross-erasing, and suppressing fusion areas

Inactive Publication Date: 2005-01-26
LINTEC CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] However, in the existing writable optical recording medium, if the recording, deletion or reproduction of information is repeated, there is a problem that the recorded information cannot be reproduced correctly.

Method used

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  • Optical recording medium-producing sheet and optical recording medium
  • Optical recording medium-producing sheet and optical recording medium
  • Optical recording medium-producing sheet and optical recording medium

Examples

Experimental program
Comparison scheme
Effect test

no. 1 Embodiment approach

[0033] In the first embodiment, an optical disc manufacturing sheet for forming a protective sheet for an optical disc which is a writable optical recording medium will be described. figure 1 is a cross-sectional view of a sheet for manufacturing an optical disc according to the first embodiment of the present invention, figure 2 (a)~ figure 2 (d) is a cross-sectional view showing an example of an optical disc manufacturing method using the optical disc manufacturing sheet of this embodiment.

[0034] like figure 1 As shown, the optical disc manufacturing sheet 1 of the first embodiment has an adhesive layer (curable layer) 11, and one surface of the adhesive layer 11 ( figure 1 The protective sheet (protective layer) 12 laminated on the top of the middle), and the other side of the adhesive layer 11 ( figure 1 Middle and lower surfaces) are laminated with a release sheet 13. In addition, the protective sheet 12 is a protective layer of an optical disk, and the peeling s...

no. 2 Embodiment approach

[0093] In the second embodiment, an optical disk manufacturing sheet including a stamper-receiving layer for replicating the concavo-convex pattern of the stamper will be described. image 3 is a cross-sectional view of a sheet for manufacturing an optical disc according to a second embodiment of the present invention, Figure 4 (a)~ Figure 4 (g) is a sectional view which shows an example of the manufacturing method of the optical disc using the optical disc manufacturing sheet of this embodiment.

[0094] like image 3 As shown, the optical disc manufacturing sheet 4 of the second embodiment is composed of a stamper-receiving layer (curable layer) 41 and release sheets 42, 42' laminated on both sides of the stamper-receiving layer 41 . Among them, the release sheets 42, 42' are peeled off when the sheet 4 for optical disc manufacturing is used.

[0095] The stamper-receiving layer 41 is a layer that reproduces the concave-convex pattern formed on the stamper, constitutes ...

no. 3 Embodiment approach

[0113] In the third embodiment, an optical disc manufacturing sheet including a stamper-receiving layer on which the concavo-convex pattern of the stamper has been copied and the two A sheet for manufacturing an optical disc in which information recording layers are bonded to each other. Figure 5 (a), Figure 5 (b) is a cross-sectional view of a sheet for manufacturing an optical disc according to a third embodiment of the present invention, Image 6 (a)~ Image 6 (e) is a sectional view showing an example of an optical disc manufacturing method using the optical disc manufacturing sheet of this embodiment.

[0114] like Figure 5 As shown in (a), the first optical disc manufacturing sheet 5 of this embodiment is formed of a stamper receiving layer (curable layer) 51, laminated on one surface of the stamper receiving layer 51 ( Figure 5 The protective sheet (protective layer) 52 on the middle upper surface), and the other side laminated on the stamper receiving layer 51 ...

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Abstract

An optical disc-producing sheet 1, which has an adhesive layer 11 having a specific heat capacity after curing of not more than 1.9 J / g. DEG C at 80 DEG C and a protective sheet 12, is laminated onto an information recording layer 3 (a laminate of a reflecting layer 31, a dielectric layer 32, a phase change layer 33 and a dielectric layer 32') formed on an optical recording medium substrate 2. According to this optical disc, recorded information can be reproduced accurately even in the case that recording / erasure or reproduction of information has been carried out repeatedly.

Description

technical field [0001] The present invention relates to a writable optical recording medium such as a write-once optical disc or a rewritable optical disc, and an optical recording medium manufacturing sheet capable of manufacturing such an optical recording medium, and particularly relates to In the case of , it is also possible to accurately reproduce a writable optical recording medium in which information is recorded, and a sheet for producing an optical recording medium that can manufacture such an optical recording medium. Background technique [0002] As a rewritable optical recording medium for recording with light, a write-once optical disc that can only be recorded once, and a rewritable optical disc that can be recorded multiple times by repeating erasure and writing, in recent years, by By shortening the recording laser wavelength and adopting high NA lenses, the increase in recording capacity has continued to increase. [0003] Taking the recording capacity of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B3/02G11B7/24G11B7/243G11B7/2433G11B7/248G11B7/254G11B7/256G11B7/257G11B7/26
CPCG11B7/247G11B7/256G11B7/248G11B7/246Y10T428/21G11B7/26
Inventor 山崎刚行本智美宫田壮加藤一也久保田新
Owner LINTEC CORP
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