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Recordable information recording medium and disk apparatus

A technology of information recording and recording marks, which is applied in the direction of recording information storage, data recording, information storage, etc., and can solve the problems that the high-density double-layer HDDVD-R manufacturing process cannot be used.

Inactive Publication Date: 2007-10-17
KK TOSHIBA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This manufacturing method is limited to dual-layer DVD-R for recording / playback by red laser, and cannot be used for high-density dual-layer HD DVD-R manufacturing process

Method used

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  • Recordable information recording medium and disk apparatus
  • Recordable information recording medium and disk apparatus
  • Recordable information recording medium and disk apparatus

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Experimental program
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Embodiment Construction

[0044] The present invention can be roughly classified into the following first to fourth aspects.

[0045] Inventions according to the first and second aspects are a recordable information recording medium basically comprising: a transparent resin substrate having grooves and lands having a concentric or spiral shape; A recording film formed on the grooves and lands of the transparent resin substrate; an interlayer made of a transparent resin material having grooves and lands of the above-mentioned shape; and a second recording film formed on the grooves and lands of the interlayer. In these recordable information recording media, recording marks are formed by irradiation with a short-wavelength laser beam, and the light reflectance of the recording marks formed by irradiation with a short-wavelength laser beam is higher than that before irradiation with a short-wavelength laser beam. light reflectivity, and the groove oscillates within a predetermined amplitude range.

[00...

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Abstract

The invention provides a recordable medium for recording information. A first recording film (51), a sandwich layer (44) and a second recording film (52) form on a transparent resin substrate (41) comprising a groove (53) and a land between grooves (54) and a record mark is formed by using short wave beam for irradiating the recording film. The light reflectivity of the record mark formed by using short wave beam for irradiating the recording film is higher than that before using short wave beam for irradiating. The groove swings in preset amplitude range. The resin material forming the sandwich layer is a polymer material mainly containing carbon, hydrogen, nitrogen and oxygen. The ratio of oxygen atom is 11atm percent or more or the push-pull signal percentage modulation is 0.26 or more.

Description

technical field [0001] The present invention relates to a recordable type information recording medium capable of recording / reproducing information using a short-wavelength laser beam such as a blue laser beam, and a display device for reproducing the medium. Background technique [0002] As is well known, the recent widespread use of personal computers and the like has increased the importance of digital data storage media. For example, at present, information recording media capable of digitally recording / playing back long-time video and audio information are widely used. Furthermore, information recording media for digital recording / playback are beginning to be used in mobile devices such as mobile phones. [0003] Many of such information recording media have a disc shape because discs have a large information recording capacity and high random accessibility which allows rapid retrieval of desired recorded information. Furthermore, discs are easy to store and carry bec...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G11B7/24G11B7/241G11B7/242G11B7/14G11B7/13
CPCG11B7/247G11B7/2495G11B7/252G11B7/259G11B7/2492G11B2007/24612G11B7/2467
Inventor 森田成二高泽孝次梅泽和代
Owner KK TOSHIBA