JPS58196636A - Recording and reproducing disk of digital signal - Google Patents

Recording and reproducing disk of digital signal

Info

Publication number
JPS58196636A
JPS58196636A JP57078303A JP7830382A JPS58196636A JP S58196636 A JPS58196636 A JP S58196636A JP 57078303 A JP57078303 A JP 57078303A JP 7830382 A JP7830382 A JP 7830382A JP S58196636 A JPS58196636 A JP S58196636A
Authority
JP
Japan
Prior art keywords
digital signal
film
disk
substrate
transparent
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.)
Pending
Application number
JP57078303A
Other languages
Japanese (ja)
Inventor
Koichi Azuma
孝一 東
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co Ltd
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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP57078303A priority Critical patent/JPS58196636A/en
Publication of JPS58196636A publication Critical patent/JPS58196636A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material
    • G11B7/241—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material
    • G11B7/252—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers
    • G11B7/257—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers of layers having properties involved in recording or reproduction, e.g. optical interference layers or sensitising layers or dielectric layers, which are protecting the recording layers
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material
    • G11B7/241—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material
    • G11B7/252—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers
    • G11B7/254—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers of protective topcoat layers
    • G11B7/2548—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers of protective topcoat layers consisting essentially of inorganic materials
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material
    • G11B7/241—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material
    • G11B7/252—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers
    • G11B7/254—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers of protective topcoat layers
    • G11B2007/25408—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers of protective topcoat layers consisting essentially of inorganic materials
    • G11B2007/25411—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers of protective topcoat layers consisting essentially of inorganic materials containing transition metal elements (Zn, Fe, Co, Ni, Pt)
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material
    • G11B7/241—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material
    • G11B7/252—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers
    • G11B7/254—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers of protective topcoat layers
    • G11B2007/25408—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers of protective topcoat layers consisting essentially of inorganic materials
    • G11B2007/25414—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers of protective topcoat layers consisting essentially of inorganic materials containing Group 13 elements (B, Al, Ga)
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material
    • G11B7/241—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material
    • G11B7/252—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers
    • G11B7/254—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers of protective topcoat layers
    • G11B2007/25408—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers of protective topcoat layers consisting essentially of inorganic materials
    • G11B2007/25417—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers of protective topcoat layers consisting essentially of inorganic materials containing Group 14 elements (C, Si, Ge, Sn)
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material
    • G11B7/241—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material
    • G11B7/252—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers
    • G11B7/253—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers of substrates
    • G11B7/2533—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers of substrates comprising resins

Landscapes

  • Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Optical Record Carriers And Manufacture Thereof (AREA)

Abstract

PURPOSE:To obtain a transparent protecting film having high hardness with formation of said film simultaneous with an oxide film, by providing an oxides of an inorganic material equal to each other as protecting films to both the digital signal surface and the light incident surface opposite to the digital signal surface of a disk. CONSTITUTION:A metallic reflecting film 5 is formed on the digital signal surface of a transparent disk board 4 such as a video disk, etc. Then transparent protecting films 10 and 11 which have high hardness and are made of an inorganic oxide equal to each other selected among CeO2, SiO2, TiO2, Al2O3, etc. are formed in several hundreds Angstrom -serveralmu thickness on the surfaces of the film 5 and the ight incident surface 9 of the board 4 by means of a sputtering, electron beam vapor deposition or other processes. Thus even the substrate 4 made of acrylic resin, etc. is protected with a surface of high hardness to reduce flaws on the substrate 4. In addition, the productivity is also improved since films 10 and 11 on both sides of the substrate 4 can be formed at one time.

Description

【発明の詳細な説明】 本発明は記録再生円盤に関し、その目的は、ディスク表
面に硬化膜を設は表面を保護し、誤再生を防止すること
にある。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a recording/reproducing disk, and its purpose is to provide a cured film on the surface of the disk to protect the surface and prevent erroneous playback.

一般にビデオディスク（ＶＤ）やコンパクトディスク（
ＣＤ　）などのディジタル記録再生装置においては、光
学式方法や静電容量の溝付きおよび溝なし方式などがあ
り、光学式の■やＣＤなどの記録再生円盤（ディスク）
の条件としては、機械的な強度が大きく、耐熱性や耐湿
性などの経時変化が少なく優れていることの他に、ディ
スク表面がキズ付きにくいなどが必要である。Generally, video discs (VD) and compact discs (
There are optical methods, capacitive grooved and non-grooved methods for digital recording and reproducing devices such as CDs, and recording and reproducing disks (discs) such as optical methods and CDs.
The conditions for this include high mechanical strength, excellent heat resistance and moisture resistance with little change over time, and the disk surface being resistant to scratches.

光学式記録再生装置であるＣＤの概略図を第１図に示す
。１はプレーヤ本体で、２はディスク、３はディスクの
裏面にある光学式のビックアラ！装置を示す。FIG. 1 shows a schematic diagram of a CD, which is an optical recording and reproducing device. 1 is the player itself, 2 is the disc, and 3 is the optical big ara on the back of the disc! Show the device.

第２図に従来のディスクの構造図を示す。FIG. 2 shows a structural diagram of a conventional disk.

４は透明ディスク基盤、５は金属反射膜、６は信号のピ
ット、７は樹脂製裏面保護膜、８はレーデ光、９は表面
部（レーザ入射面）である。4 is a transparent disk substrate, 5 is a metal reflective film, 6 is a signal pit, 7 is a resin back protection film, 8 is a radar beam, and 9 is a surface portion (laser incident surface).

レーデ光より照射された光は、ディジタル化された信号
のビット６より再生され、Ｄ−Ａ変換され音として再生
される。The light irradiated by the radar light is reproduced from bit 6 of the digitized signal, converted from D to A, and reproduced as sound.

ディスク基盤はアクリル（ＰＭＭＡ　）やポリカー？ネ
ート（ＰＣ）などの樹脂で、インジェクション方式やホ
トポリマー法などで作られるため、樹脂製裏面保護膜７
や表面部９は樹脂の生地のままであるため軟らかく、キ
ズ付き易いという欠点がある。Is the disk base acrylic (PMMA) or polycarbonate? The resin back protective film 7 is made of resin such as Neato (PC) using an injection method or a photopolymer method.
Since the surface portion 9 is still made of resin material, it has the drawback of being soft and easily scratched.

本発明はこれらの欠点を補うものであり、ディノタル信
号金属反射膜面やディスク表面を硬化し、表面にキズが
付きにくく又、誤再生を防止するものである。図を用い
て説明する。The present invention compensates for these drawbacks by hardening the dinotal signal metal reflective film surface and the disk surface to make the surface less likely to be scratched and to prevent erroneous playback. This will be explained using figures.

第３図は本発明のディスクを示す。FIG. 3 shows a disc of the invention.

１０は無機質による酸化物の金属反射面の保護膜、１１
は同材質よりなるディスク表面（レーザ光入射面）の保
護膜を示す。材質としては、セレン（Ｃｅ　）　、シリ
コン（Ｓｔ　）　、チタｙ　（Ｔｌ）　＋アルミニウム
（Ａｔ　）などの無機質の酸化物である酸化セレン（ｃ
ｅｏ２）　＋酸化シリコン（Ｓ＋０２）　、酸化チタン
（Ｔ＋０２）　、酸化アルミニウム（Ａｔ２０３）が適
し、これらは高硬度の透明である。また、厚さは数１０
０Ｘ〜数μｍが適し、その付着方法としては、ス／４’
ツタリングや電子ビーム蒸着法などの物理蒸着法（Ｐｈ
−ｙｓｉｃａｌ　Ｖａｐｏｒ　Ｄｅｐｏｓｉｔｉｏｎ　
）や化学蒸着法（Ｃｈｅｍｉｃａｌ　Ｖａｐｏｒ　Ｄｅ
ｐｏｓｉｔｉｏｎ　）がある０このようにして得られた
無機質の酸化物は、数μｍ以下の薄膜であっても、表面
硬度が高く（ビッカース硬度：数百ｋｇ／■２）樹脂の
数を倍である。10 is a protective film of an inorganic oxide metal reflective surface; 11
indicates a protective film on the disk surface (laser light incident surface) made of the same material. Materials include selenium oxide (c), which is an inorganic oxide such as selenium (Ce), silicon (St), titanium (Tl) + aluminum (At), etc.
eo2) + silicon oxide (S+02), titanium oxide (T+02), and aluminum oxide (At203) are suitable, and these are highly hard and transparent. Also, the thickness is several 10
0X~several μm is suitable, and the adhesion method is S/4'
Physical vapor deposition methods (Ph.
-ysical Vapor Deposition
) and chemical vapor deposition
The inorganic oxide obtained in this way has a high surface hardness (Vickers hardness: several hundred kg/■2) even if it is a thin film of several μm or less, and is twice the number of resins. .

従って、ディスク表面にキズが付きにくいため、誤再生
などの問題が生じないという効果がある。Therefore, since the disk surface is less likely to be scratched, problems such as erroneous playback do not occur.

また、ディノタル信号面とその反対側のレーザ光入射面
である表面とを同じ材質の無機質の酸化物を使用するこ
とにより、同時に酸化膜の形成ができるという特徴があ
り、しかもこれらの酸化物は透明であるという特徴があ
るためディスク表面には最適であるなど、工業上有益で
ある。In addition, by using the same inorganic oxide material for the dinotal signal surface and the surface on the opposite side, which is the laser beam incidence surface, an oxide film can be formed at the same time. It is industrially useful because it is transparent, making it ideal for disk surfaces.

【図面の簡単な説明】[Brief explanation of the drawing]

第１図はＣＤ装置の概略図、第２図は従来のディスクの
構造を示す図、第３図は本発明によるディスクの構造を
示す図である。 ｌ・・・プレーヤ本体、２・・・ディスク、３・・・光
学式ビックアップ装置、４・・・透明ディスク基盤、５
・・・金属反射膜、６・・・信号のビット、７・・・樹
脂製裏面保護膜、８・・・レーザ光、９・・・表面部、
１０　、１１・・・保護膜。 ！ 第１図 第３図 ０ １１　　　　４　　　　　　　！ｊ 第２図FIG. 1 is a schematic diagram of a CD device, FIG. 2 is a diagram showing the structure of a conventional disc, and FIG. 3 is a diagram showing the structure of a disc according to the present invention. l... Player body, 2... Disc, 3... Optical backup device, 4... Transparent disc base, 5
...Metal reflective film, 6...Signal bit, 7...Resin back protective film, 8...Laser light, 9...Surface part,
10, 11...protective film. ! Figure 1 Figure 3 0 11 4! j Figure 2

Claims (2)

【特許請求の範囲】[Claims] （１）　　ディスクのディジタル信号面とその反対の光
入射面との両方の表面に、同じ材質である無機物質の酸
化物を保護膜として設けることを特徴とするディジタル
信号記録、再生ディスク。(1) A digital signal recording and reproducing disk characterized in that an oxide of an inorganic substance, which is the same material, is provided as a protective film on both the digital signal surface and the opposite light incident surface of the disk. （２）　　該酸化物は、ＣｅＯ２，５ｉｎ２．　ＴｉＯ
２，Ａｔ２０３などの透明で高硬度の薄膜であることを
特徴とする特許請求の範囲第（１）項記載のディジタル
信号記録、再生ディスク。(2) The oxide is CeO2,5in2. TiO
2. A digital signal recording and reproducing disk according to claim (1), which is made of a transparent and highly hard thin film such as At203.
JP57078303A 1982-05-12 1982-05-12 Recording and reproducing disk of digital signal Pending JPS58196636A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP57078303A JPS58196636A (en) 1982-05-12 1982-05-12 Recording and reproducing disk of digital signal

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP57078303A JPS58196636A (en) 1982-05-12 1982-05-12 Recording and reproducing disk of digital signal

Publications (1)

Publication Number Publication Date
JPS58196636A true JPS58196636A (en) 1983-11-16

Family

ID=13658153

Family Applications (1)

Application Number Title Priority Date Filing Date
JP57078303A Pending JPS58196636A (en) 1982-05-12 1982-05-12 Recording and reproducing disk of digital signal

Country Status (1)

Country Link
JP (1) JPS58196636A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63239633A (en) * 1986-11-20 1988-10-05 Canon Inc Card-shaped optical recording medium
EP0404951A1 (en) * 1988-07-01 1991-01-02 Sony Corporation Optical recording medium and a method of producing the same
JPH0410245A (en) * 1990-04-26 1992-01-14 Nec Home Electron Ltd Optical disk and its production
EP0729141A2 (en) * 1995-02-24 1996-08-28 Sony Corporation Optical recording medium and method of producing the same
US7300742B2 (en) * 2002-08-23 2007-11-27 General Electric Company Data storage medium and method for the preparation thereof
JP2008152839A (en) * 2006-12-15 2008-07-03 Toshiba Corp Optical recording medium and manufacturing method of optical recording medium

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5690438A (en) * 1979-12-19 1981-07-22 Fujitsu Ltd Optical recording medium
JPS5755545A (en) * 1980-09-22 1982-04-02 Toshiba Corp Optical recording member

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5690438A (en) * 1979-12-19 1981-07-22 Fujitsu Ltd Optical recording medium
JPS5755545A (en) * 1980-09-22 1982-04-02 Toshiba Corp Optical recording member

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63239633A (en) * 1986-11-20 1988-10-05 Canon Inc Card-shaped optical recording medium
EP0404951A1 (en) * 1988-07-01 1991-01-02 Sony Corporation Optical recording medium and a method of producing the same
JPH0410245A (en) * 1990-04-26 1992-01-14 Nec Home Electron Ltd Optical disk and its production
EP0729141A2 (en) * 1995-02-24 1996-08-28 Sony Corporation Optical recording medium and method of producing the same
EP0729141A3 (en) * 1995-02-24 1996-11-27 Sony Corp Optical recording medium and method of producing the same
US5846626A (en) * 1995-02-24 1998-12-08 Sony Corporation And Sony Disc Technology Inc. Optical recording medium and method of producing same
EP0992989A1 (en) * 1995-02-24 2000-04-12 Sony Corporation Method for producing an optical recording medium
US7300742B2 (en) * 2002-08-23 2007-11-27 General Electric Company Data storage medium and method for the preparation thereof
JP2008152839A (en) * 2006-12-15 2008-07-03 Toshiba Corp Optical recording medium and manufacturing method of optical recording medium

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