JPH02106389A - Optical recording medium - Google Patents

Optical recording medium

Info

Publication number
JPH02106389A
JPH02106389A JP63260234A JP26023488A JPH02106389A JP H02106389 A JPH02106389 A JP H02106389A JP 63260234 A JP63260234 A JP 63260234A JP 26023488 A JP26023488 A JP 26023488A JP H02106389 A JPH02106389 A JP H02106389A
Authority
JP
Japan
Prior art keywords
recording
layer
recording medium
optical recording
film
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
JP63260234A
Other languages
Japanese (ja)
Inventor
Koji Ono
浩司 小野
Minoru Ikeda
稔 池田
Masaki Ishii
正樹 石井
Koichi Saito
晃一 斉藤
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.)
Kuraray Co Ltd
Original Assignee
Kuraray 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 Kuraray Co Ltd filed Critical Kuraray Co Ltd
Priority to JP63260234A priority Critical patent/JPH02106389A/en
Publication of JPH02106389A publication Critical patent/JPH02106389A/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
    • G11B7/242—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
    • G11B7/2433—Metals or elements of Groups 13, 14, 15 or 16 of the Periodic Table, e.g. B, Si, Ge, As, Sb, Bi, Se or 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
    • G11B2007/24302—Metals or metalloids
    • G11B2007/24308—Metals or metalloids transition metal elements of group 11 (Cu, Ag, Au)
    • 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
    • G11B2007/24326—Halides (F, CI, Br...)
    • 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
    • G11B2007/24328—Carbon
    • 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
    • G11B7/2531—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 glass
    • 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
    • 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]
    • 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
    • G11B7/2572—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 organic materials
    • G11B7/2575—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 organic materials resins

Landscapes

  • Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Thermal Transfer Or Thermal Recording In General (AREA)
  • Optical Record Carriers And Manufacture Thereof (AREA)

Abstract

PURPOSE:To improve recording and reproducing characteristics and to enhance high temperature and moisture resistances by providing a recording layer made of F and C dispersed with Au on a board, and forming an optical recording medium. CONSTITUTION:A recording layer of a layer (fluorocarbon layer) made of F and C dispersed with Au is formed on a board such as glass, synthetic resin film, etc., by means such as a sputtering method, a vacuum depositing method, a CVD method, etc., to manufacture an optical recording medium. In order to protect the recording layer against dusts, damage, etc., it is desirable to laminate a protective layer made of urethane, etc., on the recording layer. The Au content of the recording layer is 5 - 70% of atomic % represented by Au/(Au+Fe+C)X100, and the F content is desirably 40 - 65% of atomic % represented by F/(F+C)X100.

Description

【発明の詳細な説明】 〔産業上の利用分野〕 本発明は光（たとえばレーザ光）を照射することにより
情報の記録および再生を行う光学記録媒体に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an optical recording medium that records and reproduces information by irradiating it with light (eg, laser light).

〔従来の技術〕[Conventional technology]

レーザ光によって情報の記録および再生を行う光学記録
媒体は、半導体レーザ、記録材料および成膜方法などの
基本技術の向上と、大容量記録が可能であるという特徴
にょシ、最近急速に実用化の道が開かれてきた。上記光
学記録媒体の記録方法としては、レーザ光の照射による
熱エネルギーによって、（イ）記録膜を変形してピット
またはバブルを形成する方法、（０）記録膜の反射率等
の光学的性質を変化させる方法などが提案されている。Optical recording media, which record and reproduce information using laser light, have recently been rapidly put into practical use due to improvements in basic technologies such as semiconductor lasers, recording materials, and film formation methods, as well as the ability to record large amounts of data. The path has been opened. The above-mentioned recording methods for the optical recording medium include (a) deforming the recording film to form pits or bubbles using thermal energy from laser beam irradiation, and (0) modifying optical properties such as reflectance of the recording film. Methods to change this have been proposed.

上記（ロ）の記録方法に用いられる記録材料は主として
相変化を利用して記録されるもので、Ｔｅ、Ｓｅ等のカ
ルコゲン化合物が従来から用いられていることが多い。The recording material used in the above-mentioned recording method (b) mainly performs recording using phase change, and chalcogen compounds such as Te and Se have been conventionally used in many cases.

一方、上記（イ）の記録方法に用いられる記録材料とし
ては、（ロ）と同様にカルコゲン化合物があげられる。On the other hand, examples of the recording material used in the recording method (a) above include chalcogen compounds, as in (b).

また特開昭５８−１８８３４６号には低い融解温度の懸
濁性コロイド中に、銀を分散させた層とその他の金属粒
子を分散させた層とを設けた光学記録媒体が開示されて
いる。Further, JP-A-58-188346 discloses an optical recording medium comprising a layer in which silver is dispersed and a layer in which other metal particles are dispersed in a suspending colloid having a low melting temperature.

〔発明が解決しようとする課題〕[Problem to be solved by the invention]

ところが、カルコゲンは化学的に不安定なものが多く、
これを主成分とした記録膜では、高湿度雰囲気下で記録
膜にクラックが発生しやすい。また相変化による記録材
料は記録部と未記録部の光学的コントラストが小さく、
さらに、高温高湿度下での安定性が低い。特開昭５８−
１８８３４６号にかかる記録層も同様に高温高湿に対す
る耐久性に問題がある。However, many chalcogens are chemically unstable;
In a recording film containing this as a main component, cracks are likely to occur in the recording film in a high humidity atmosphere. In addition, recording materials based on phase change have a small optical contrast between recorded and unrecorded areas.
Furthermore, it has low stability under high temperature and high humidity conditions. Japanese Patent Application Publication No. 1983-
The recording layer according to No. 188346 similarly has a problem in durability against high temperature and high humidity.

ところで、上記（イ）の記録方法の場合、記録膜上に保
護層を形成すると記録膜の変形の障害となるので、記録
感度は著しく低下してしまう。上記（ロ）の記録方法の
場合でも、保護層を設けると熱の拡散が生じるためにや
はり記録感度は低下する。By the way, in the case of the above-mentioned recording method (a), forming a protective layer on the recording film becomes an obstacle to deformation of the recording film, so that the recording sensitivity is significantly lowered. Even in the case of the above recording method (b), the provision of a protective layer causes heat diffusion, resulting in a decrease in recording sensitivity.

この発明は上記課題に鑑みてなされたもので、基板に記
録膜が形成され、所定の波長領域の光を強く吸収して、
該光によって記録膜は変形することなく記録される上記
（ロ）の光学記録媒体において、良好な記録および再生
特性が得られ、かつ、耐高温高湿度性にもすぐれた光学
記録媒体を提供することを目的としている。特に、記録
膜上に保護層が設けられても、高記録感度を有する光学
記録媒体を提供しようとしている。This invention was made in view of the above problems, and includes a recording film formed on a substrate, which strongly absorbs light in a predetermined wavelength range.
To provide an optical recording medium according to (b) above, in which the recording film is recorded without being deformed by the light, which has good recording and reproduction characteristics and is also excellent in high temperature and high humidity resistance. The purpose is to In particular, an attempt is being made to provide an optical recording medium that has high recording sensitivity even if a protective layer is provided on the recording film.

〔課題を解決するための手段〕[Means to solve the problem]

上記目的を達成するために、この出題の請求項（１）の
光学記録媒体では、記録膜はＦおよびＣからなる層にＡ
ｕが分散されている。In order to achieve the above object, in the optical recording medium of claim (1) of this question, the recording film has a layer consisting of F and C.
u are distributed.

請求項（２）では上記記録膜上に、たとえば接着剤から
なる保護層が形成されている。In claim (2), a protective layer made of, for example, an adhesive is formed on the recording film.

請求項（３）の発明は請求項（１）または（２）におい
て、上記記録膜ノＡｕの含有量は、Ａｕ／（Ａｕ−）−
Ｆ＋Ｃ）Ｘ１００で表わされる原子数パーセントが５ｑ
ＩＩ以上７０％以下であり、かつ、Ｆの含有量は、Ｆ／
（Ｆ＋Ｃ）ｘｌｏｏで表わされる原子数パーセントが４
０１以上６５％以下である。The invention of claim (3) is based on claim (1) or (2), wherein the content of Au in the recording film is Au/(Au-)-
F+C) The number percent of atoms expressed by X100 is 5q
II or more and 70% or less, and the F content is F/
The number percent of atoms represented by (F+C)xlooo is 4
01 or more and 65% or less.

本発明の光学記録媒体では、基板にＦおよびＣからなる
層（フロロカーボン層）にＡｕを分散した記録膜が形成
されており、記録のための光（たとえばレーザ光）を照
射することＫよってＡｕが照射部に局所的に凝集するの
で、光学記録媒体の表面反射率が高くなシ記録が行われ
る。そして、記録時に形状変化をともなわないため、記
録層に保護層を積層し九場合でも記録感度が大きく低下
することはない。ま九フロロカーボン層の断熱効果のた
め、従来のカルコゲン系の相変化材料のように熱の拡散
による記録感度の低下を生じることもかい。In the optical recording medium of the present invention, a recording film in which Au is dispersed in a layer made of F and C (fluorocarbon layer) is formed on the substrate, and by irradiating recording light (for example, laser light), the Au Since the light is locally aggregated at the irradiated area, recording is performed with a high surface reflectance of the optical recording medium. Further, since the shape does not change during recording, the recording sensitivity does not decrease significantly even if a protective layer is laminated on the recording layer. Due to the heat insulating effect of the fluorocarbon layer, recording sensitivity may decrease due to heat diffusion, unlike conventional chalcogen-based phase change materials.

上記光学記録媒体のＡｕ、ＦおよびＣの含有量は上記範
囲であるのがよい。Ａｕの含有量が上記範囲を越え多す
ぎると記録膜の反射率が上がシすぎ、光の吸収量が減っ
て全く記録ができないか、記録感度が低下する。逆に少
なすぎるとＡｕが凝集しＫ〈〈な少記録が行われない。The content of Au, F and C in the optical recording medium is preferably within the above range. If the content of Au exceeds the above range and is too high, the reflectance of the recording film will be too high, and the amount of light absorption will decrease, resulting in either no recording being possible or a decrease in recording sensitivity. On the other hand, if the amount is too small, Au will aggregate and K<< low recording will not be performed.

さらにＦの含有量が上記範囲を越え、多すぎると、記録
膜と基板との密着性が悪くなるので、記録膜が剥離する
ことがある。ま念Ａｕが非常に動きやすくなって熱的な
安定性が低下する。逆に少なすぎると、　Ａｕがフロロ
カーボン層内で動きにくいため記録感度が低下する０ 記録膜をゴミ、キズ等から保護するために設けられる上
記保護層としては、ウレタン系、アクリル系、シリコン
系、フェノール系およびメラミン系等の任意の合成樹脂
（たとえば接着剤）が用いられる。Furthermore, if the content of F exceeds the above range and is too large, the adhesion between the recording film and the substrate will deteriorate, so that the recording film may peel off. Manen Au becomes very mobile and its thermal stability decreases. On the other hand, if the amount is too small, the recording sensitivity decreases because Au is difficult to move within the fluorocarbon layer.The protective layer provided to protect the recording film from dust, scratches, etc. may be urethane-based, acrylic-based, silicone-based, Any synthetic resin (eg, adhesive) can be used, such as phenolic and melamine.

上記記録膜の膜厚は特に限定されないが、記録に用いる
光の波長に対する、記録前の反射率が５−以上６０チ以
下の範囲である様に設定されるのが良い。この範囲を越
え、低すぎると記録、再生時にトラッキングが十分に行
えず、安定した記録、再生が困難となる。また、高すぎ
ると記録光を十分に吸収することができず、全く記録が
できないか、記録に高パワーを要するので好ましくない
。The thickness of the recording film is not particularly limited, but it is preferably set so that the reflectance before recording with respect to the wavelength of light used for recording is in the range of 5 to 60 inches. If it exceeds this range or is too low, tracking will not be sufficient during recording or reproduction, making stable recording or reproduction difficult. On the other hand, if it is too high, recording light cannot be absorbed sufficiently, and recording may not be possible at all, or high power is required for recording, which is not preferable.

上記記録膜は、スパッタリング法、真空蒸着法、ＣＶＤ
法等の常法により形成することが可能であシ、成膜方法
は特に限定されるものではない。The above-mentioned recording film can be formed by sputtering method, vacuum evaporation method, CVD method, etc.
It is possible to form the film by a conventional method such as a method, and the film forming method is not particularly limited.

用いられる基板としては、記録、再生光を透過するのに
十分透明であれば何でも使用できる。例えば、ガラス、
ポリエステル樹脂、ポリオレフィン樹脂、ポリアミド樹
脂、ポリカーボネイト樹脂およびポリメタクリル樹脂等
の透明性にすぐれ九材料が使用できる。上記透明性基板
上に各層を積層し、この基板と任意の不透明性基板を貼
り合わせても良い。記録膜を形成した２枚の透明性基板
を、各層を内側にして任意の接着剤によシ貼り合わせて
も良い。基板の形状は円形、方形等であっても良く、デ
ィスク状、カード状等であってもよい。上記基板は、例
えばトラッキング等の丸めのものではないが、１１００
０ｎ以下のものが使用に適している。したがって、現在
の半導体レーザで、波長が７５０〜８５０　ｎｍ領斌の
ものが有効に使われる。この場合記録時のパワーとして
は、一般に１〜１５ｍＷ程度の範囲が用いられる。Any substrate can be used as long as it is transparent enough to transmit recording and reproducing light. For example, glass
Nine materials with excellent transparency can be used, such as polyester resin, polyolefin resin, polyamide resin, polycarbonate resin, and polymethacrylic resin. Each layer may be laminated on the transparent substrate, and this substrate may be bonded to any opaque substrate. Two transparent substrates with recording films formed thereon may be bonded together with any adhesive with each layer facing inside. The shape of the substrate may be circular, rectangular, etc., or may be disk-shaped, card-shaped, etc. The above board is not a round board for tracking, for example, but it is 1100
Those with a value of 0n or less are suitable for use. Therefore, current semiconductor lasers with wavelengths in the range of 750 to 850 nm can be effectively used. In this case, the power used during recording is generally in the range of about 1 to 15 mW.

〔作用〕[Effect]

記録のための光を記録膜に照射すると照射部の温度が上
昇するので、記録膜の７０口カーボン層に分散されたＡ
ｕが凝集し、照射部の反射率が上昇する。When the recording film is irradiated with light for recording, the temperature of the irradiated area rises, so the A dispersed in the 70-hole carbon layer of the recording film
u aggregates, and the reflectance of the irradiated area increases.

〔実施例〕〔Example〕

以下に実施例により本発明をより詳しく説明する０ （実施例１） 記録部であるランド部およびトラック案内溝であるグル
ープ部を有するポリカーボネイト製透明円形基板上Ｉｃ
、Ａｕ、ＦおよびＣからなる記録膜をスパッタリング法
によシ成膜した。以下にその成膜条件を示す。まずチャ
ンバー内を真空引きし、そののちＡｒガスをガス圧が５
　Ｘ　１０−３Ｔｏｒｒになるように導入した。そして
、ポリテトラフロロエチレンのターゲットには高周波パ
ワーを印加し、　Ａｕのターゲットには直流パワーを印
加する２元スパッタ法により上記記録膜を成膜した（膜
厚４０　ｎｍ）。The present invention will be explained in more detail with reference to Examples below.0 (Example 1) Ic on a transparent circular substrate made of polycarbonate having a land portion which is a recording portion and a group portion which is a track guide groove.
, Au, F, and C were formed by sputtering. The film forming conditions are shown below. First, the inside of the chamber is evacuated, and then Ar gas is pumped to a gas pressure of 5.
The pressure was introduced at a pressure of X 10-3 Torr. Then, the recording film was formed by a binary sputtering method in which high frequency power was applied to the polytetrafluoroethylene target and DC power was applied to the Au target (film thickness: 40 nm).

上記記録膜の組成をＥＳＣＡにより分析すると、Ａｕ　
Ｏ含有量はＡｕ　／　（Ａｕ　＋　Ｆ　＋　Ｃ）　ｘ　
１００で表わされる原子数パーセントが３０％、Ｆの含
有量はＦ／（Ｆ＋Ｃ）ｘｌｏｏで表わされる原子数パー
セントが５７チであった。When the composition of the recording film was analyzed by ESCA, it was found that Au
O content is Au / (Au + F + C) x
The percentage of atoms represented by 100 was 30%, and the F content was 57% by the number of atoms represented by F/(F+C)xlooo.

上記記録膜を設けた光学記録媒体の記録再生特性を測定
したところ、５ｍＷ以上１（１ｍＷ以下で４５ｄＢ以上
であり、最高ＣＮＲは４３　ｄＢであった。When the recording and reproducing characteristics of the optical recording medium provided with the above recording film were measured, it was 45 dB or more at 5 mW or more (1 mW or less), and the highest CNR was 43 dB.

また上記記録膜を形成した基板にポリウレタン系の接着
剤からなる保護層を介して他の基板を貼り合わせて作製
した光学記録媒体で同様の測定を行ったが、記録再生特
性に影響はなかった。また７５℃８５１ＲＨにおいて１
０００時間保持する条件で加速劣化試験を行い、アーカ
イバルライフおよびシェルフライフの測定を行ったが、
ともに劣化しなかった。Similar measurements were also performed on an optical recording medium made by bonding the substrate on which the above recording film was formed to another substrate via a protective layer made of polyurethane adhesive, but there was no effect on the recording and playback characteristics. . Also, 1 at 75℃851RH
An accelerated deterioration test was conducted under conditions of holding for 000 hours, and archival life and shelf life were measured.
Both did not deteriorate.

（実施例２） 実施例１と同じ透明円形基板に、Ａｕ、ＦおよびＣから
なる記録膜をＣＶＤ法によシ成膜した。チャンバー内を
真空引きした後、　Ａｕガス（ガス圧０．１Ｔｏｒｒ　
）およびテトラフロロエチレンガス（ガス圧０、３　Ｔ
ｏｒｒ　）を導入した。電極間に高周波ノくワーを印加
し、またＡｕを抵抗加熱によって蒸発させるこ録膜を形
成した。上記記録膜の組成をＥＳＣＡにより分析すると
、Ａｕの含有量はＡｕ／（Ａｕ十Ｆ−１−Ｃ）×１００
で表わされる原子数バーセン勢が３０％、上記光学記録
媒体の記録再生特性を測定したところ、４ｍＷ以上でＣ
ＮＲが４５ｄＢ以上、最高ＣＮＲは４８　ｄＢであり高
感度であった。(Example 2) A recording film made of Au, F, and C was formed on the same transparent circular substrate as in Example 1 by the CVD method. After evacuating the chamber, Au gas (gas pressure 0.1 Torr) was applied.
) and tetrafluoroethylene gas (gas pressure 0, 3 T
orr) was introduced. A recording film was formed by applying a high frequency blower between the electrodes and evaporating Au by resistance heating. When the composition of the recording film was analyzed by ESCA, the Au content was found to be Au/(Au+F-1-C)×100
When the recording and reproducing characteristics of the above optical recording medium were measured, it was found that at 4 mW or more, C
The NR was 45 dB or more, and the highest CNR was 48 dB, indicating high sensitivity.

〔発明の効果〕〔Effect of the invention〕

この出願の請求項（１）の光学記録媒体は基板上に、フ
ロロカーボン層にＡｕを分散した記録膜が形成されてい
るので、記録感度および耐高温高湿度性が良好である。The optical recording medium according to claim (1) of this application has a recording film in which Au is dispersed in a fluorocarbon layer formed on a substrate, and therefore has good recording sensitivity and high temperature and high humidity resistance.

上記光学記録媒体は請求項（２）のように上記記録膜上
に保護層を積層し７た場合においても、高記録感度が得
られる。Even when the optical recording medium has a protective layer laminated on the recording film as in claim (2), high recording sensitivity can be obtained.

上記記録膜のＡｕおよびＦの含有量が請求項（Ｓ）の範
囲であれば、記録感度や熱的な安定性が特に高い０ 特許出願人　株式会社　り　ラ　しIf the content of Au and F in the recording film is within the range of claim (S), the recording sensitivity and thermal stability are particularly high.

Claims (3)

【特許請求の範囲】[Claims] （１）記録膜に光を照射することにより情報を記録する
光学記録媒体において、基板に形成された上記記録膜は
ＦおよびＣからなる層にＡｕが分散されていることを特
徴とする光学記録媒体。(1) An optical recording medium in which information is recorded by irradiating a recording film with light, characterized in that the recording film formed on the substrate has Au dispersed in a layer made of F and C. Medium. （２）上記記録膜上に保護層が形成されていることを特
徴とする請求項（１）記載の光学記録媒体。(2) The optical recording medium according to claim (1), further comprising a protective layer formed on the recording film. （３）上記記録膜のＡｕの含有量は、Ａｕ／（Ａｕ＋Ｆ
＋Ｃ）×１００で表される原子数パーセントが５％以上
７０％以下であり、かつ、Ｆの含有量は、Ｆ／（Ｆ＋Ｃ
）×１００で表わされる原子数パーセントが４０％以上
６５％以下であることを特徴とする請求項（１）または
（２）記載の光学記録媒体。(3) The Au content of the recording film is Au/(Au+F
+C)×100 is 5% or more and 70% or less, and the content of F is F/(F+C
2. The optical recording medium according to claim 1, wherein the percentage of atoms expressed by )×100 is 40% or more and 65% or less.
JP63260234A 1988-10-14 1988-10-14 Optical recording medium Pending JPH02106389A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP63260234A JPH02106389A (en) 1988-10-14 1988-10-14 Optical recording medium

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP63260234A JPH02106389A (en) 1988-10-14 1988-10-14 Optical recording medium

Publications (1)

Publication Number Publication Date
JPH02106389A true JPH02106389A (en) 1990-04-18

Family

ID=17345218

Family Applications (1)

Application Number Title Priority Date Filing Date
JP63260234A Pending JPH02106389A (en) 1988-10-14 1988-10-14 Optical recording medium

Country Status (1)

Country Link
JP (1) JPH02106389A (en)

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