Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Information recording medium and its mfg. method

A technology for information recording and manufacturing methods, which is applied in the fields of optical record carrier manufacturing, data recording, information storage, etc., and can solve the problems of reduced reflectivity of recording layers, poor performance of repeated rewriting, etc.

Inactive Publication Date: 2005-06-08
PANASONIC CORP
View PDF11 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If a large amount of S diffuses into the recording layer, it will cause a decrease in the reflectivity of the recording layer and deteriorate the performance of repeated rewriting

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Information recording medium and its mfg. method
  • Information recording medium and its mfg. method
  • Information recording medium and its mfg. method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0120] An example of an optical information recording medium as Embodiment 1 of the present invention in which recording and reproduction of information are carried out using a laser beam will be described. figure 1 A partial cross section of the optical information recording medium is shown.

[0121] figure 1 The information recording medium 25 shown has such a structure that a first dielectric layer 2, a recording layer 4, a second dielectric layer 6, a light absorption compensation layer 7, and a reflection layer 8 are sequentially formed on one surface of a substrate 1. , but also an equivalent substrate 10 bonded by an adhesive layer 9 . The information recording medium having this structure can be used as a 4.7 GB / DVD-RAM for recording and reproducing by a laser beam in the red wavelength range around 660 nanometers in wavelength. In the information recording medium having this structure, the laser beam 12 is incident from the side surface of the substrate 1 to recor...

Embodiment approach 2

[0162] Another example of an optical information recording medium as Embodiment 2 of the present invention for recording and reproducing information using a laser beam will be described below. figure 2 A partial section of the optical information recording medium is shown in .

[0163] figure 2 The information recording medium 26 shown has such a structure that a first dielectric layer 2, a recording layer 4, a second interface layer 105, a second dielectric layer 106, and an optical absorption compensation layer are sequentially formed on one surface of a substrate 1. layer 7 and reflective layer 8 , but also an equivalent substrate 10 bonded by an adhesive layer 9 . figure 2 The information recording medium 26 shown with Figure 10 The conventional information recording medium 31 shown is different in that there is no first interface layer 103 . In addition, the information recording medium 26 and figure 1 The information recording medium 25 of the first embodiment sh...

Embodiment approach 3

[0169] Another example of an optical information recording medium as Embodiment 3 of the present invention for recording and reproducing information using a laser beam will be described below. image 3 A partial section of the optical information recording medium is shown in .

[0170] image 3 The information recording medium 27 shown has such a structure that a first dielectric layer 102, a first interface layer 103, a recording layer 4, a second dielectric layer 6, and an optical absorption compensation layer are sequentially formed on the surface of one side of the substrate 1. layer 7 and reflective layer 8 , but also an equivalent substrate 10 bonded by an adhesive layer 9 . image 3 The information recording medium 27 shown with Figure 10 The conventional information recording medium 31 shown is different in that there is no second interface layer 105 . In addition, the information recording medium 27 and figure 1 The information recording medium 25 of the first em...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
thicknessaaaaaaaaaa
wavelengthaaaaaaaaaa
thicknessaaaaaaaaaa
Login to View More

Abstract

The present invention provides an information recording medium capable of ensuring high reliability and good repeated rewriting performance without providing an interface layer between a recording layer and a dielectric layer. On the surface of the substrate 1, a recording layer 4 and dielectric layers 2 and 6 are formed. The recording layer 4 undergoes a phase transition between a crystalline phase and an amorphous phase by light irradiation or application of electric energy. The dielectric layers 2 and 6 are, for example, Use the formula (ZrO 2 ) M (Cr 2 o 3 ) 100-M (mole %) (wherein M is 20≤M≤80) the Zr-Cr-O base material layer of material composition.

Description

technical field [0001] The present invention relates to an information recording medium for optically or electrically recording, erasing, rewriting, and reproducing information, and a manufacturing method thereof. [0002] Related Application Cross Reference [0003] This application is based on Japanese application 2002-55872 (applied on March 1, 2002, the name of the invention is information recording medium and its manufacturing method), Japanese application 2002-45661 (applied on February 22, 2002, the name of the invention is information recording medium and its manufacturing method) and Japanese application 2001-384306 (filed on December 18, 2001, the title of the invention is an information recording medium and its manufacturing method) claiming priority under the Paris Convention, and the content recorded in the above application is cited as part of this manual. Background technique [0004] The present inventor has developed a DVD-RAM of 4.7 GB, which is a high-ca...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): G11B7/24038G11B7/243G11B7/253G11B7/2531G11B7/2532G11B7/2533G11B7/2534G11B7/257G11B7/2578G11B7/258G11B7/259H01L45/00
CPCG11B7/24038G11B7/252G11B7/2531G11B7/2532G11B7/2533G11B7/2534G11B7/256G11B7/2578G11B7/259G11B2007/24308G11B2007/2431G11B2007/24312G11B2007/24314G11B2007/24316G11B2007/2432G11B2007/25706G11B2007/2571G11B2007/25715G11B2007/25716H10N70/231H10N70/826H10N70/8616H10N70/8828H10N70/026G11B7/2433G11B7/26
Inventor 儿岛理惠西原孝史土生田晴比古山田昇
Owner PANASONIC CORP
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com