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US20070128433A1 - Optical disc capable of revealing preservation condition - Google Patents

Optical disc capable of revealing preservation condition Download PDF

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Publication number
US20070128433A1
US20070128433A1 US11/421,136 US42113606A US2007128433A1 US 20070128433 A1 US20070128433 A1 US 20070128433A1 US 42113606 A US42113606 A US 42113606A US 2007128433 A1 US2007128433 A1 US 2007128433A1
Authority
US
United States
Prior art keywords
optical disc
indicating material
layer
layer structure
substrate
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Abandoned
Application number
US11/421,136
Inventor
Chen Peng
Hung-Chuan Cheng
Yao-Wen Chang
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
BenQ Materials Corp
Original Assignee
Daxon Technology Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Daxon Technology Inc filed Critical Daxon Technology Inc
Assigned to DAXON TECHNOLOGY INC. reassignment DAXON TECHNOLOGY INC. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: CHANG, YAO-WEN, CHEN, PENG, CHENG, HUNG-CHUAN
Publication of US20070128433A1 publication Critical patent/US20070128433A1/en
Abandoned legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B33/00—Constructional parts, details or accessories not provided for in the other groups of this subclass
    • G11B33/14—Reducing influence of physical parameters, e.g. temperature change, moisture, dust
    • G11B33/1446—Reducing contamination, e.g. by dust, debris
    • G11B33/1453—Reducing contamination, e.g. by dust, debris by moisture
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B23/00—Record carriers not specific to the method of recording or reproducing; Accessories, e.g. containers, specially adapted for co-operation with the recording or reproducing apparatus ; Intermediate mediums; Apparatus or processes specially adapted for their manufacture
    • G11B23/38—Visual features other than those contained in record tracks or represented by sprocket holes the visual signals being auxiliary signals
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B33/00—Constructional parts, details or accessories not provided for in the other groups of this subclass
    • G11B33/14—Reducing influence of physical parameters, e.g. temperature change, moisture, dust
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/29—Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
    • Y10T428/2913—Rod, strand, filament or fiber
    • Y10T428/2922—Nonlinear [e.g., crimped, coiled, etc.]

Definitions

  • the present invention relates generally to an optical disc and, more particularly, to an optical disc which includes an indicating material.
  • optical storage media because of the convenience of these optical storage media, users easily ignore the preservation environment of these media. Therefore, these optical storage media may be deteriorated by environment factors such as high humidity, increased temperature, light exposure and oxidation, and then be unreadable.
  • one aspect of the present invention is to provide an optical disc capable of revealing preservation condition thereof by an indicating material therein.
  • the optical disc includes a substrate and a multi-layer structure.
  • the multi-layer structure is formed over the substrate, and at least one layer of the multi-layer structure contains an indicating material.
  • the indicating material has a respective color changeable in response to permeation of oxygen or moisture into the layer containing the indicating material.
  • the optical disc includes a first substrate, a multi-layer structure and a second substrate. Additionally, the multi-layer structure is formed over the first substrate, and at least one layer of the multi-layer structure containing an indicating material. The indicating material having a respective color changeable in response to permeation of an oxygen or a moisture into the layer containing the indicating material. Moreover, the second substrate is formed over the multi-layer structure.
  • FIG. 1 is a sectional view of an optical disc according to an embodiment of the present invention.
  • FIG. 2 is a sectional view of an optical disc according to an embodiment of the present invention.
  • FIG. 3 is a schematic diagram of an optical disc in accordance with a practice of the invention.
  • FIG. 4 is a sectional view of an optical disc according to an embodiment of the present invention.
  • the present invention provides an optical disc capable of revealing preservation condition thereof by an indicating material therein.
  • the optical disc includes a substrate and a multi-layer structure.
  • the multi-layer structure is formed over the substrate, and at least one layer of it containing an indicating material.
  • the indicating material has a respective color changeable in response to permeation of an oxygen or a moisture into the layer containing the indicating material.
  • FIG. 1 shows a sectional view of an optical disc 1 according to the present invention.
  • the optical disc 1 includes the substrate 11 and the multi-layer structure 13 as described above.
  • the multi-layer structure 13 further includes a recording layer 131 , a reflecting layer 133 and a surface layer 135 .
  • the surface layer 135 contains the indicating material 1351 capable of revealing the preservation condition of the optical disc 1 .
  • the indicating material 1351 can be Cobaltous Oxide (CoO), Sodium diphenylaminesulfonate, ferroin or other material with the same character.
  • the indicating material 1351 also can be a mixture of above materials.
  • the optical disc 1 in accordance with another embodiment of the invention includes the substrate 11 and the multi-layer structure 13 as described above. Moreover, the multi-layer structure 13 also includes the recording layer 131 , the reflecting layer 133 and the surface layer 135 . In particular, in the embodiment, the recording layer 131 contains the indicating material 1311 .
  • the indicating material 1311 can be CoO, Sodium diphenylaminesulfonate, ferroin, other material with the same character or their mixtures.
  • the optical discs described above can be configured to comply with a CD-R specification or a CD-RW specification.
  • the surface of the optical disc has at least one transparent area for observing the change of color of said indicating material.
  • the transparent area can locate within an extreme inner periphery 1131 or without an extreme outer periphery 1133 on the surface 113 of the optical disc 1 . It should be noticed that the extreme inner periphery and extreme outer periphery of the optical disc means the extreme inner periphery and extreme outer periphery of the data recordable region respectively.
  • the optical disc includes a first substrate, a multi-layer structure and a second substrate.
  • the multi-layer structure is formed over the first substrate, and at least one layer of the multi-layer structure containing an indicating material.
  • the indicating material has a respective color changeable in response to permeation of an oxygen or a moisture into the layer containing the indicating material.
  • the second substrate is formed over the multi-layer structure.
  • the optical disc 3 includes a first substrate 31 , a multi-layer structure 33 and a second substrate 35 . Furthermore, the multi-layer structure 33 further includes a recording layer 331 , a reflecting layer 333 and a bonding layer 335 . In particular, in the embodiment, the bonding layer 335 contains the indicating material 3351 .
  • the indicating material 3351 can be CoO, Sodium diphenylaminesulfonate, ferroin, other material with the same character or their mixtures.
  • the optical discs described above can be configured to comply with a DVD-R, a DVD+R or a DVD-RW specification.
  • the surface of the optical disc has at least one transparent area for observing the change of color of said indicating material.
  • the transparent area can be located within an extreme inner periphery or without an extreme outer periphery of the optical disc.
  • the optical disc of the present invention is capable of indicating the preservation condition thereof. More important, users can easily observe the condition of the optical disc, so as to backup the data stored in the disc to ensure the safety of the data.

Landscapes

  • Heat Sensitive Colour Forming Recording (AREA)
  • Laminated Bodies (AREA)
  • Optical Record Carriers And Manufacture Thereof (AREA)

Abstract

The present invention is to provide an optical disc which comprises a substrate and a multi-layer structure. The multi-layer structure is formed over the substrate, and at least one layer of the multi-layer structure contains an indicating material. Furthermore, the indicating material has a respective color changeable in response to permeation of oxygen or moisture into the layer containing the indicating material.

Description

    BACKGROUND OF THE INVENTION
  • 1. Field of the Invention
  • The present invention relates generally to an optical disc and, more particularly, to an optical disc which includes an indicating material.
  • 2. Description of the Prior Art
  • The modern information revolution has led to an ever increasing demand for data storage systems. To this end, the extremely low cost per megabyte, mature technology, small size, and convenient handling of optical storage media, e.g., CD-R, CD-RW, DVD±R, DVD-RW, has resulted in the explosive growth of their use as a data storage and distribution medium. The user can easily apply these medium to store enormous amounts of movies, music, pictures or data.
  • However, because of the convenience of these optical storage media, users easily ignore the preservation environment of these media. Therefore, these optical storage media may be deteriorated by environment factors such as high humidity, increased temperature, light exposure and oxidation, and then be unreadable.
  • Obviously, it is important to warn the user about the preservation condition of the optical storage media, so as to prevent the damage of the stored data.
    • SUMMARY OF THE INVENTION
  • Accordingly, one aspect of the present invention is to provide an optical disc capable of revealing preservation condition thereof by an indicating material therein. In one preferred embodiment of the present invention, the optical disc includes a substrate and a multi-layer structure. The multi-layer structure is formed over the substrate, and at least one layer of the multi-layer structure contains an indicating material. Furthermore, the indicating material has a respective color changeable in response to permeation of oxygen or moisture into the layer containing the indicating material.
  • In another preferred embodiment of the present invention, the optical disc includes a first substrate, a multi-layer structure and a second substrate. Additionally, the multi-layer structure is formed over the first substrate, and at least one layer of the multi-layer structure containing an indicating material. The indicating material having a respective color changeable in response to permeation of an oxygen or a moisture into the layer containing the indicating material. Moreover, the second substrate is formed over the multi-layer structure.
  • The advantage and spirit of the invention may be understood by the following recitations together with the appended drawings.
    • BRIEF DESCRIPTION OF THE APPENDED DRAWINGS
  • FIG. 1 is a sectional view of an optical disc according to an embodiment of the present invention.
  • FIG. 2 is a sectional view of an optical disc according to an embodiment of the present invention.
  • FIG. 3 is a schematic diagram of an optical disc in accordance with a practice of the invention.
  • FIG. 4 is a sectional view of an optical disc according to an embodiment of the present invention.
    • DETAILED DESCRIPTION OF THE INVENTION
  • The present invention provides an optical disc capable of revealing preservation condition thereof by an indicating material therein.
  • According to a preferred embodiment of the present invention, the optical disc includes a substrate and a multi-layer structure. In addition, the multi-layer structure is formed over the substrate, and at least one layer of it containing an indicating material. In particular, the indicating material has a respective color changeable in response to permeation of an oxygen or a moisture into the layer containing the indicating material. Please refer to FIG. 1, which shows a sectional view of an optical disc 1 according to the present invention. The optical disc 1 includes the substrate 11 and the multi-layer structure 13 as described above. Additionally, the multi-layer structure 13 further includes a recording layer 131, a reflecting layer 133 and a surface layer 135. Particularly, the surface layer 135 contains the indicating material 1351 capable of revealing the preservation condition of the optical disc 1.
  • In practice, the indicating material 1351 can be Cobaltous Oxide (CoO), Sodium diphenylaminesulfonate, ferroin or other material with the same character. In particular, the indicating material 1351 also can be a mixture of above materials.
  • Referring to FIG. 2, the optical disc 1 in accordance with another embodiment of the invention includes the substrate 11 and the multi-layer structure 13 as described above. Moreover, the multi-layer structure 13 also includes the recording layer 131, the reflecting layer 133 and the surface layer 135. In particular, in the embodiment, the recording layer 131 contains the indicating material 1311.
  • Similarly, the indicating material 1311 can be CoO, Sodium diphenylaminesulfonate, ferroin, other material with the same character or their mixtures.
  • In practice, the optical discs described above can be configured to comply with a CD-R specification or a CD-RW specification. In practice, the surface of the optical disc has at least one transparent area for observing the change of color of said indicating material. Furthermore, as shown in FIG. 3, the transparent area can locate within an extreme inner periphery 1131 or without an extreme outer periphery 1133 on the surface 113 of the optical disc 1. It should be noticed that the extreme inner periphery and extreme outer periphery of the optical disc means the extreme inner periphery and extreme outer periphery of the data recordable region respectively.
  • According to another preferred embodiment of the present invention, the optical disc includes a first substrate, a multi-layer structure and a second substrate. The multi-layer structure is formed over the first substrate, and at least one layer of the multi-layer structure containing an indicating material. Furthermore, the indicating material has a respective color changeable in response to permeation of an oxygen or a moisture into the layer containing the indicating material. In addition, the second substrate is formed over the multi-layer structure.
  • Referring to FIG. 4, the optical disc 3 according to one embodiment of the present invention includes a first substrate 31, a multi-layer structure 33 and a second substrate 35. Furthermore, the multi-layer structure 33 further includes a recording layer 331, a reflecting layer 333 and a bonding layer 335. In particular, in the embodiment, the bonding layer 335 contains the indicating material 3351.
  • In practice, the indicating material 3351 can be CoO, Sodium diphenylaminesulfonate, ferroin, other material with the same character or their mixtures. In practice, the optical discs described above can be configured to comply with a DVD-R, a DVD+R or a DVD-RW specification. In practice, the surface of the optical disc has at least one transparent area for observing the change of color of said indicating material. Furthermore, the transparent area can be located within an extreme inner periphery or without an extreme outer periphery of the optical disc.
  • Obviously, through the changeable color indicating material, the optical disc of the present invention is capable of indicating the preservation condition thereof. More important, users can easily observe the condition of the optical disc, so as to backup the data stored in the disc to ensure the safety of the data.
  • With the example and explanations above, the features and spirits of the invention will be hopefully well described. Those skilled in the art will readily observe that numerous modifications and alterations of the device may be made while retaining the teaching of the invention. Accordingly, the above disclosure should be construed as limited only by the metes and bounds of the appended claims.

Claims (15)

1. An optical disc, comprising:
a substrate; and
a multi-layer structure formed over the substrate, at least one layer of the multi-layer structure containing an indicating material, and said indicating material having a respective color changeable in response to permeation of an oxygen or a moisture into the layer containing the indicating material.
2. The optical disc of claim 1, wherein the indicating material is one selected from the group consisting of a Cobaltous Oxide (CoO), a Sodium diphenylaminesulfonate, a ferroin and their mixtures.
3. The optical disc of claim 2, wherein the at least one layer containing the indicating material comprises a surface layer of the multi-layer structure.
4. The optical disc of claim 2, wherein the at least one layer containing the indicating material comprises a recording layer of the multi-layer structure.
5. The optical disc of claim 1, wherein the optical disc is configured to comply with a CD-R specification or a CD-RW specification.
6. The optical disc of claim 5, wherein the surface of the optical disc has at least one transparent area for observing the change of color of said indicating material.
7. The optical disc of claim 6, wherein the transparent area is located within an extreme inner periphery or without an extreme outer periphery of the optical disc.
8. An optical disc, comprising:
a first substrate;
a multi-layer structure formed over the first substrate, at least one layer of the multi-layer structure containing an indicating material, and said indicating material having a respective color changeable in response to permeation of an oxygen or a moisture into the layer containing the indicating material; and
a second substrate, formed over the multi-layer structure.
9. The optical disc of claim 8, wherein the indicating material is one selected from the group consisting of a Cobaltous Oxide (CoO), a Sodium diphenylaminesulfonate, a ferroin and their mixtures.
10. The optical disc of claim 9, wherein the at least one layer containing the indicating material comprises a bonding layer of the multi-layer structure.
11. The optical disc of claim 9, wherein the at least one layer containing the indicating material comprises a recording layer of the multi-layer structure.
12. The optical disc of claim 8, wherein the optical disc is configured to comply with a DVD-R specification or a DVD+R specification.
13. The optical disc of claim 8, wherein the optical disc is configured to comply with a DVD-RW.
14. The optical disc of claim 13, wherein the surface of the optical disc has at least one transparent area for observing the change of color of said indicating material.
15. The optical disc of claim 14, wherein the transparent area is located within an extreme inner periphery or without an extreme outer periphery of the optical disc.
US11/421,136 2005-12-07 2006-05-31 Optical disc capable of revealing preservation condition Abandoned US20070128433A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
TW094143069A TWI264001B (en) 2005-12-07 2005-12-07 Optical disc capable of revealing reservation condition
TW094143069 2005-12-07

Publications (1)

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US20070128433A1 true US20070128433A1 (en) 2007-06-07

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TW (1) TWI264001B (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5681634A (en) * 1995-02-15 1997-10-28 Matsushita Electric Industrial Co., Ltd. Optical information medium, and method and apparatus for fabricating the same
US6011772A (en) * 1996-09-16 2000-01-04 Spectradisc Corporation Machine-readable optical disc with reading-inhibit agent
US6756103B2 (en) * 2001-06-05 2004-06-29 Flexplay Technologies, Inc. Limited play optical devices with interstitial reactive layer and methods of making same
US20050129953A1 (en) * 2001-03-14 2005-06-16 Breitung Eric M. Media and method for limiting access to data thereon

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5681634A (en) * 1995-02-15 1997-10-28 Matsushita Electric Industrial Co., Ltd. Optical information medium, and method and apparatus for fabricating the same
US6011772A (en) * 1996-09-16 2000-01-04 Spectradisc Corporation Machine-readable optical disc with reading-inhibit agent
US20050129953A1 (en) * 2001-03-14 2005-06-16 Breitung Eric M. Media and method for limiting access to data thereon
US6756103B2 (en) * 2001-06-05 2004-06-29 Flexplay Technologies, Inc. Limited play optical devices with interstitial reactive layer and methods of making same

Also Published As

Publication number Publication date
TW200723273A (en) 2007-06-16
TWI264001B (en) 2006-10-11

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Legal Events

Date Code Title Description
AS Assignment

Owner name: DAXON TECHNOLOGY INC., TAIWAN

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:CHEN, PENG;CHENG, HUNG-CHUAN;CHANG, YAO-WEN;REEL/FRAME:017699/0283

Effective date: 20060425

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION