JPS6129431A - Optical recording medium - Google Patents

Optical recording medium

Info

Publication number
JPS6129431A
JPS6129431A JP14997184A JP14997184A JPS6129431A JP S6129431 A JPS6129431 A JP S6129431A JP 14997184 A JP14997184 A JP 14997184A JP 14997184 A JP14997184 A JP 14997184A JP S6129431 A JPS6129431 A JP S6129431A
Authority
JP
Japan
Prior art keywords
film
optical recording
recording medium
metal fluoride
stable
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
JP14997184A
Other languages
Japanese (ja)
Inventor
Yoshiki Goto
良樹 後藤
Sanemori Soga
眞守 曽我
Tokihiko Shimizu
清水　時彦
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 JP14997184A priority Critical patent/JPS6129431A/en
Publication of JPS6129431A publication Critical patent/JPS6129431A/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
    • G11B7/254—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
    • G11B7/2542—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 organic resins
    • 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
    • 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
    • G11B7/242—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of recording layers
    • G11B7/243—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of recording layers comprising inorganic materials only, e.g. ablative layers
    • G11B2007/24302—Metals or metalloids
    • G11B2007/24316—Metals or metalloids group 16 elements (i.e. chalcogenides, Se, Te)
    • 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
    • G11B7/242—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of recording layers
    • G11B7/243—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of recording layers comprising inorganic materials only, e.g. ablative layers
    • G11B2007/24318—Non-metallic elements
    • G11B2007/2432—Oxygen
    • 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
    • G11B2007/25705—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 consisting essentially of inorganic materials
    • G11B2007/25706—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 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
    • G11B7/257—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
    • G11B2007/25705—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 consisting essentially of inorganic materials
    • G11B2007/25708—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 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
    • G11B7/257—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
    • G11B2007/25705—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 consisting essentially of inorganic materials
    • G11B2007/25718—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 consisting essentially of inorganic materials containing halides (F, Cl, Br, l)
    • 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
    • G11B7/2534—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 polycarbonates [PC]

Landscapes

  • Optical Record Carriers And Manufacture Thereof (AREA)

Abstract

PURPOSE:To obtain an optical recording medium which has excellent moisture- proofness, is stable for a long period of time and is highly reliable by providing an optical recording film on one surface of a base body consisting of a transparent high-polymer material and forming a specific metal fluoride film on the recording film. CONSTITUTION:The optical recording film 2 consisting essentially of Te and TeO2 is provided by vapor deposition, etc. on the base body 1 consisting of the transparent high-polymer material such as polymethacrylate or polycarbonate. The stable and hydrophobic metal fluoride film consisting of AlF3, CrF3, TiF6, etc. is formed as a protective film on the film 2 by a vacuum deposition method, coating method, etc. A transparent resin layer 4 may be further provided on the film 3. The optical recording medium having the excellent moisture-proofness, high transparency and high reliability is thus obtd.

Description

【発明の詳細な説明】 産業上の利用分野 本発明は、光学的な情報の記録再生に用いる光記録媒体
に関するものである。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to an optical recording medium used for recording and reproducing optical information.

従来例の構成とその問題点 レーザー光の照射によシ光学的に記録再生を行ネー）（
ＰＣ）などの高分子材料を基体として、その片面に蒸着
記録膜を作成し、さらに保護膜として、ＰＭＭＡのは９
合わせか、エポシ樹脂等の△ コーテイング膜を設けている。しかしながら、前記の構
成体の場合、常湿〜多湿環境下では、水蒸気が容易に保
護膜を透過し、記録媒体の成分と反応することにより、
結晶核が生成したシ、媒体が変質したシして、やがては
、記録再生が不可能になるという致命的な欠陥が生じる
。これに対し、ＰＭＭＡやＰＣの表面改質−で改良する
ことや、代苦 替材料として、セルローズアセテートやエポシ樹へ 脂、メラミン樹脂等の提案など各種の方策が検討されて
ｂるが、透明性の低下や防湿性の基本的解決がなされて
いないのが現状である。一方、透明性と防湿性の特性を
満足する＃料としてガラスが挙げられるが、コスト、加
工性に難点があるのは当然として、可とう性に欠けるた
め、機械的破損は否めないという問題点がある。Conventional configuration and its problems Recording and reproducing is performed optically by irradiation with laser light) (
Using a polymeric material such as PC) as a base, a vapor-deposited recording film was created on one side of the base, and a protective film of PMMA was
A coating film such as epoxy resin or the like is provided. However, in the case of the above-mentioned structure, water vapor easily permeates through the protective film and reacts with the components of the recording medium in an environment of normal humidity to high humidity.
As crystal nuclei are generated and the medium changes in quality, a fatal defect will eventually occur in which recording and reproduction will become impossible. In response to this, various measures are being considered, such as improving the surface of PMMA and PC, and proposing cellulose acetate, epoxy resin, melamine resin, etc. as alternative materials. At present, there is no fundamental solution to the problems of reduced elasticity and moisture resistance. On the other hand, glass can be cited as a material that satisfies the characteristics of transparency and moisture resistance, but it naturally has drawbacks in terms of cost and processability, as well as the problem of mechanical damage due to its lack of flexibility. There is.

発明の目的 本発萌の目的は、防湿性にすぐれ、かつ、長期安定性を
有する光記録媒体を提供することである。OBJECT OF THE INVENTION An object of the present invention is to provide an optical recording medium that has excellent moisture resistance and long-term stability.

発明の構成 本発明は、ポリカーボネート等の基板の片面にＴｏおよ
びＴ　ｅ　Ｏ２を主成分とする蒸着膜のようなグなどに
よシ作成した特定のフッ化金属膜を設けることによシ防
湿性を改善したものである。Structure of the Invention The present invention provides moisture-proofing properties by providing a specific metal fluoride film, such as a vapor-deposited film containing To and TeO2 as main components, on one side of a substrate such as polycarbonate. This is an improved version of

実施例の説明 本発明にもとづき、蒸着記録膜の片面に真空蒸着等で形
成されるフッ化金属膜は、その分子構造上疎水的であシ
、さらに膜にち密性があるため、水分透過係数は小さい
材料である。DESCRIPTION OF EMBODIMENTS Based on the present invention, a metal fluoride film formed by vacuum deposition on one side of a vapor-deposited recording film is hydrophobic due to its molecular structure and is dense, so that the water permeability coefficient is low. is a small material.

適用可能な材料は、Ａ　（ｌ　Ｆ　３．　Ａ　ｇ　Ｆ　
、　Ｃｒ　Ｆ　２　。Applicable materials are A (l F 3. A g F
, CrF2.

Ｃｒ　Ｆ　３．　Ｃｏ　Ｆ　３＊　Ｔ　ｚ　Ｆ　ａ　ｓ
　Ｔ　ｉＦ　ｅ　、　Ｐ　ｂ　Ｆ　２　ｐ　Ｂ　ｉＦ　
ｓ　ｅＢ　Ｉ　Ｆ　４およびＭ　ｎ　Ｆ　２などである
。これらは、空気中や水分に対しても安定であり、かつ
、疎水的な材料である。従来、フッ化金属として提案さ
れてきたものに、Ｍｇ、Ｃａ、Ｃｅのフッ化物が挙げら
れているが、これらは過酷な環境条件下では特性的に不
充分である。（特許−５７−１７２５３８）そこで、本
発明者等は種々検討した結果、上記に述べるフッ化金属
を用いることによシ、防湿性の非常にすぐれた光学媒体
が得られることを見出した。Ａｔ、Ａｑ、Ｃｒ、Ｃｏ、
Ｔｉ、Ｐｂ、Ｂｉ、Ｍｎ等のフッ化物は、空気や水分に
対し安定であ、シ良好な効果をもたらす。CrF3. Co F 3 * T z F a s
T iF e , P b F 2 p B iF
such as s eB IF 4 and M n F 2. These materials are stable in the air and in moisture, and are hydrophobic. Conventionally, fluorides of Mg, Ca, and Ce have been proposed as metal fluorides, but these have insufficient properties under harsh environmental conditions. (Patent No. 57-172538) Therefore, as a result of various studies, the present inventors have found that by using the above-mentioned metal fluoride, an optical medium with extremely excellent moisture resistance can be obtained. At, Aq, Cr, Co,
Fluorides such as Ti, Pb, Bi, and Mn are stable against air and moisture and have good effects.

このようなフッ化金属膜を形成する方法としては、蒸着
、イオンブレーティング、および塗布などを用いること
ができ、膜゛構造上ち密であるため、水分の透過は非常
に小さく防湿性が良い安定な保護膜である。Methods for forming such a metal fluoride film include vapor deposition, ion blating, and coating.Since the film is dense in structure, moisture permeation is extremely small and it is stable and has good moisture resistance. It is a protective film.

したがって、本発明によるフッ化金属膜を備えた光記録
媒体は、後述する実施例に限らず、記録材料として、Ｔ
ｏ、、Ｔｅ１ｌ、Ｓｂ、Ｓｅ、Ｂｉ又はＡｔなどの蒸着
膜や、あるいは、光学的に応答するホトクロミック材料
、染料、界面活性剤等の有機系記録材料を用いる場合に
も適用可能であり、又、基板として、ガラス等を用いた
構成にも良いことは言うまでもない。Therefore, the optical recording medium provided with the metal fluoride film according to the present invention is not limited to the embodiments described below, and the recording material may include T.
It is also applicable when using vapor deposited films such as Te1l, Sb, Se, Bi, or At, or organic recording materials such as optically responsive photochromic materials, dyes, and surfactants. It goes without saying that a structure using glass or the like as the substrate is also good.

以下実施例を示す。Examples are shown below.

実施例 板１の片面にＴｏ及びＴｏｏユを主成分とする蒸着記録
膜２を設け、さらに真空蒸着法で、ＭｎＦ２（試料／Ｉ
ｔＬ２　）、あるいはＣａＦ２（試料４３）からなる保
護膜３を形成した。更にその上に樹脂層４を設けた。な
お、蒸着膜のない媒体を比較例とした（試料ｌ６１）。A vapor deposition recording film 2 containing To and Too Yu as main components was provided on one side of the example plate 1, and MnF2 (sample/I
A protective film 3 made of tL2 ) or CaF2 (sample 43) was formed. Furthermore, a resin layer 4 was provided thereon. Note that a medium without a deposited film was used as a comparative example (sample 161).

そしてくこれらを６０℃９０％ＲＨの環境下で劣化試験
を行ない、光透過率や顕微鏡写真で性能比較を実施した
。その結果を下表に示す。These were then subjected to a deterioration test in an environment of 60° C. and 90% RH, and the performance was compared using light transmittance and micrographs. The results are shown in the table below.

この表から明らかなように、比較試料■では２日程度で
結晶核の生成や黒化が生じたシして、光学特性も８３０
　ｎｍでは２０％透過率がダウンするなど劣化が著しい
。又、ＣａＦ２を膜とした試料１６３では、初期の時点
では試料煮１程核生成や黒化がなかったものの、途中か
らは激しく斑点状のものが増加し始め、２００日程では
かえって悪くなるという傾向がみられたのに対し、本発
明の試料／Ｉ６２では全く何の変化も見られず初期特性
を長期にわたって保障する性能が確認できた。As is clear from this table, in the comparison sample ■, crystal nucleus formation and blackening occurred in about 2 days, and the optical properties were also 830.
At nm, the deterioration is significant, with the transmittance decreasing by 20%. In addition, in sample 163, which had CaF2 as a film, although there was no nucleation or blackening at the initial stage compared to sample boiling, the number of spots began to increase severely from the middle of the boiling, and after 200 days, it tended to get worse. On the other hand, no change was observed in sample/I62 of the present invention, confirming its ability to maintain its initial characteristics over a long period of time.

発明の効果 以上のように、本発明は基板上に形成された光記録媒体
１を、フッ化金属膜のうちの特定のもので保護すること
によシ、防湿性のすぐれたかつ透明性の高い信頼性の向
上した光記録媒体を実現することができる。Effects of the Invention As described above, the present invention protects the optical recording medium 1 formed on the substrate with a specific metal fluoride film, thereby achieving excellent moisture resistance and transparency. An optical recording medium with high reliability can be realized.

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

図面は、本発明の一実施例における光学記録媒体の断面
図である。 １・・・・・・基板、２・・・・・・記録膜、３・・・
・・・保護膜、４・・・・・・樹脂層。The drawing is a sectional view of an optical recording medium in one embodiment of the present invention. 1...Substrate, 2...Recording film, 3...
...Protective film, 4...Resin layer.

Claims (1)

【特許請求の範囲】[Claims] 透明性高分子材料からなる基体の片面に光学記録膜を担
持し、前記記録膜の上面に、ＡｌＦ＿３、ＡｇＦ、Ｃｒ
Ｆ＿２、ＣｒＦ＿３、ＣｏＦ＿３、ＴｉＦ＿３、ＴｉＦ
＿６、ＰｂＦ＿６、ＰｂＦ＿２、ＢｉＦ＿３、ＢｉＦ＿
４及びＭｎＦ＿２から選ばれた少なくとも一種のフッ化
金属膜を備えたことを特徴とする光記録媒体。An optical recording film is supported on one side of a substrate made of a transparent polymer material, and AlF_3, AgF, Cr
F_2, CrF_3, CoF_3, TiF_3, TiF
_6, PbF_6, PbF_2, BiF_3, BiF_
1. An optical recording medium comprising at least one kind of metal fluoride film selected from MnF_2 and MnF_2.
JP14997184A 1984-07-19 1984-07-19 Optical recording medium Pending JPS6129431A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14997184A JPS6129431A (en) 1984-07-19 1984-07-19 Optical recording medium

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14997184A JPS6129431A (en) 1984-07-19 1984-07-19 Optical recording medium

Publications (1)

Publication Number Publication Date
JPS6129431A true JPS6129431A (en) 1986-02-10

Family

ID=15486623

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14997184A Pending JPS6129431A (en) 1984-07-19 1984-07-19 Optical recording medium

Country Status (1)

Country Link
JP (1) JPS6129431A (en)

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