JPH0626028B2 - Optical information recording medium - Google Patents

Optical information recording medium

Info

Publication number
JPH0626028B2
JPH0626028B2 JP59018222A JP1822284A JPH0626028B2 JP H0626028 B2 JPH0626028 B2 JP H0626028B2 JP 59018222 A JP59018222 A JP 59018222A JP 1822284 A JP1822284 A JP 1822284A JP H0626028 B2 JPH0626028 B2 JP H0626028B2
Authority
JP
Japan
Prior art keywords
recording medium
layer
information recording
ion
optical information
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.)
Expired - Lifetime
Application number
JP59018222A
Other languages
Japanese (ja)
Other versions
JPS60163245A (en
Inventor
勉 佐藤
秀章 大庭
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.)
Ricoh Co Ltd
Original Assignee
Ricoh 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 Ricoh Co Ltd filed Critical Ricoh Co Ltd
Priority to JP59018222A priority Critical patent/JPH0626028B2/en
Priority to DE19853503995 priority patent/DE3503995A1/en
Priority to GB08503022A priority patent/GB2155811B/en
Priority to US06/698,701 priority patent/US4656121A/en
Publication of JPS60163245A publication Critical patent/JPS60163245A/en
Publication of JPH0626028B2 publication Critical patent/JPH0626028B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • G11B7/244—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 organic materials only
    • G11B7/246—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 organic materials only containing dyes
    • G11B7/248—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 organic materials only containing dyes porphines; azaporphines, e.g. phthalocyanines
    • 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
    • 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
    • G11B7/244—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 organic materials only
    • G11B7/246—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 organic materials only containing dyes
    • G11B7/247—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 organic materials only containing dyes methine or polymethine dyes
    • G11B7/2472—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 organic materials only containing dyes methine or polymethine dyes cyanine
    • 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
    • G11B7/244—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 organic materials only
    • G11B7/246—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 organic materials only containing dyes
    • G11B7/247—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 organic materials only containing dyes methine or polymethine dyes
    • G11B7/2475—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 organic materials only containing dyes methine or polymethine dyes merocyanine
    • 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
    • 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
    • G11B7/256—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 improving adhesion between layers

Description

【発明の詳細な説明】 〔技術分野〕 本発明は特に光安定性および耐読出し回数を向上させた
光情報記録媒体に関する。TECHNICAL FIELD The present invention particularly relates to an optical information recording medium having improved light stability and read-out times.

〔従来技術〕[Prior art]

従来、回転しているデイスク状の情報記録媒体にレーザ
光を照射して情報の記録再生を行なう情報記録再生装置
が知られている。この種の情報記録装置に用いられる情
報記録媒体としては基板、金属反射膜および色素を含む
半透明着色層から構成されているものが知られている。
この記録媒体は色素を含む半透明着色層に入射するレー
ザ光が金属反射膜に達して反射されるようにして反射光
を検出し易いようにしたものであつて、この際前記金属
反射膜は着色層のみでは不足する反射光量を補なうため
に設けられている。しかしながら、金属反射膜の存在は
情報記録媒体の構成を複雑にすると共に高コスト化の原
因となつている。そこで、反射率の高いブロンズ光沢の
ある有機色素単層膜を使用して上記欠点を除去すること
が提案されている。特に、記録膜として光吸収の大きい
シアニン色素を用いると、膜厚３００Å〜６００Åで金
属光沢（反射率２０〜３０％）を示す光吸収反射膜が得
られ、レーザ記録可能で、反射読出が可能になる。特に
レーザ光源として波長７５０〜８５０ｎｍの半導体レー
ザを用いると装置の小型化が可能になるという利点が得
られた。しかしながら、有機色素は一般に酸化を受けて
保存性が低下するという問題があつた。Conventionally, there is known an information recording / reproducing apparatus which irradiates a rotating disk-shaped information recording medium with a laser beam to record / reproduce information. An information recording medium used in this type of information recording apparatus is known to be composed of a substrate, a metal reflective film, and a semitransparent colored layer containing a dye.
This recording medium is one in which the laser light incident on the semi-transparent colored layer containing a dye reaches the metal reflection film and is reflected so that the reflected light can be easily detected. The colored layer is provided to compensate for the amount of reflected light that is insufficient. However, the presence of the metal reflection film complicates the structure of the information recording medium and causes a cost increase. Therefore, it has been proposed to eliminate the above-mentioned defects by using a bronze-lustrous organic dye single layer film having a high reflectance. In particular, when a cyanine dye having a large light absorption is used as the recording film, a light absorbing / reflecting film having a film thickness of 300Å to 600Å and exhibiting a metallic luster (reflectance of 20 to 30%) can be obtained, laser recording is possible, and reflection reading is possible. become. In particular, the use of a semiconductor laser having a wavelength of 750 to 850 nm as the laser light source has an advantage that the device can be downsized. However, organic dyes generally suffer from the problem that they are oxidized and their storability is deteriorated.

〔目 的〕〔Purpose〕

本発明は上記問題に鑑みてなされたものであつて、その
目的は高分解能、高記録密度および高感度化が期待され
る有機色素系記録層特にシアニンまたはメロシアニン色
素系記録層の保存性（光照射に対する安定性）を改良す
ることである。また、本発明の目的は高い記録密度とC/
N比を有するとともに保存性のすぐれた光情報記録媒体
を提供することである。The present invention has been made in view of the above problems, and its object is to improve the storage stability of an organic dye-based recording layer, particularly cyanine or merocyanine dye-based recording layer, which is expected to have high resolution, high recording density and high sensitivity. Stability against irradiation). Further, the object of the present invention is to achieve high recording density and C /
An object of the present invention is to provide an optical information recording medium having an N ratio and excellent storability.

〔構 成〕〔Constitution〕

本発明によれば、基板上にシアニン色素またはメロシア
ニン色素を主成分とする有機色素薄膜記録層を少なくと
も有する光情報記録媒体において、後記する一般式(I)
で表わされる化合物が含有されていることを特徴とする
光情報記録媒体が提供され、 また基板と、有機色素薄膜記録層の間に下引層及び/又
は有機色素薄膜記録層の上に保護層が設けられている上
記光情報記録媒体が提供され、 更には、有機色素薄膜記録層、下引層及び保護層の何れ
かに一般式(I)で表わされる化合物が含有されている上
記光情報記録媒体が提供される。本発明において用いら
れる化合物は下記一般式(1)で表わされる化合物であ
る。According to the present invention, in an optical information recording medium having at least an organic dye thin film recording layer containing a cyanine dye or a merocyanine dye as a main component on a substrate, the following general formula (I)
There is provided an optical information recording medium comprising a compound represented by, and a protective layer on the undercoat layer between the substrate and the organic dye thin film recording layer and / or on the organic dye thin film recording layer. The optical information recording medium is provided, further, the optical information containing a compound represented by the general formula (I) in any of the organic dye thin film recording layer, the subbing layer and the protective layer. A recording medium is provided. The compound used in the present invention is a compound represented by the following general formula (1).

〔式中、Rは低級アルキル基を、Xはヘキサフルオロ砒酸
イオン、ヘキサフルオロアンチモン酸イオン、フッ化ホ
ウ素酸イオン、過塩素酸イオン、トリフルオロ酢酸イオ
ン又は過沃素酸イオンを、Aは (nは1又は2)を表わす。〕また、一般式(1)の化合物の代
表例としては下記のＡ〜Ｌの化合物が例示される。 [In the formula, R is a lower alkyl group, X is hexafluoroarsenate ion, hexafluoroantimonate ion, fluoroborate ion, perchlorate ion, trifluoroacetate ion or periodate ion, and A is (n is 1 or 2). Further, as typical examples of the compound of the general formula (1), the following compounds A to L are exemplified.

Ａ Ｂ Ｃ Ｄ Ｅ Ｆ Ｇ Ｈ Ｉ Ｊ Ｋ Ｌ 本発明に用いられる有機色素薄膜記録層はシアニン色素
またはメロシアニン色素を主成分とし、その他に他の色
素、化合物および結着剤などを含んでいてもよい。シア
ニン色素およびメロシアニン色素としては任意のものを
使用できるが、その代表例にはそれぞれ下記の一般式
(2)および(3)で表わされる化合物がある。A B C D E F G H I J K L The organic dye thin film recording layer used in the present invention contains a cyanine dye or a merocyanine dye as a main component, and may further contain other dyes, compounds and binders. Any of cyanine dyes and merocyanine dyes can be used, and typical examples thereof are shown by the following general formulas.
There are compounds represented by (2) and (3).

ただし、Ｒ1およびＲ2は同じかまたは異なつていてもよ
くそしてそれぞれアルキル基、ヒドロキシアルキル基、
アルコキシアルキル基、アラルキル基、カルボキシアル
キル基、アルカリ金属陽イオンと結合したカルボキシア
ルキレート基、スルホアルキル基、スルホアルキル基ま
たはアルカリ金属陽イオンと結合したスルホネートアル
キル基を表わし、Ｚ1およびＺ2は５員または６員の複素
環または５員または６員の複素環を含む縮合環を形成す
ることのできる原子団を表わし、ｌは１〜４の整数を表
わしそしてＸは酸アニオンを表わす。 However, R 1 and R 2 may be the same or different and each is an alkyl group, a hydroxyalkyl group,
An alkoxyalkyl group, an aralkyl group, a carboxyalkyl group, a carboxyalkylate group bonded to an alkali metal cation, a sulfoalkyl group, a sulfoalkyl group or a sulfonate alkyl group bonded to an alkali metal cation, Z 1 and Z 2 are each Represents an atomic group capable of forming a 5-membered or 6-membered heterocycle or a condensed ring containing a 5-membered or 6-membered heterocycle, 1 represents an integer of 1 to 4 and X represents an acid anion.

また、本発明における有機色素薄膜記録層に必要に応じ
て設けられる下引き層および保護層については、下引き
層は(a)接着性の向上、(b)水またはガスなどのバリヤ
ー、(c)記録層の保存安定性の向上および(d)反射率の向
上などを目的として使用される。(a)の目的に対しては
高分子材料例えばアイオノマー樹脂、ポリアミド樹脂、
ビニル系樹脂、天然高分子、シリコーン、液状ゴムなど
の種々の物質を用いることができ、(b)の目的に対して
は上記高分子材料以外に無機化合物例えばSiO2、MgF2、
SiO、TiO2、ZnO2など、金属または半金属例えばZn、C
u、S、Ni、Cr、Ge、Se、Cd、Ag、Alなどを用いることが
でき、(c)の目的に対しては上記(a)および(b)について
例示したような材料そして(d)の目的に対しては金属例
えばAg、Alなどを用いることができる。また、保護層は
キズ、ホコリ、汚れなどからの保護および記録層の化学
的安定性の向上を目的として設けられ、その材料として
は下引き層と同じ材料を使用することができる。Regarding the undercoat layer and the protective layer, which are optionally provided in the organic dye thin film recording layer in the present invention, the undercoat layer has (a) improved adhesion, (b) a barrier against water or gas, and (c). ) Used for the purpose of improving storage stability of the recording layer and (d) improving reflectance. For the purpose of (a), a polymer material such as an ionomer resin, a polyamide resin,
Various substances such as vinyl resins, natural polymers, silicone, and liquid rubber can be used, and for the purpose of (b), in addition to the above polymer materials, inorganic compounds such as SiO 2 , MgF 2 ,
SiO, TiO 2 , ZnO 2, etc., metal or semimetal such as Zn, C
u, S, Ni, Cr, Ge, Se, Cd, Ag, Al, etc. can be used, and for the purpose of (c), materials such as those exemplified for (a) and (b) above and (d For the purpose of 1), a metal such as Ag or Al can be used. The protective layer is provided for the purpose of protecting it from scratches, dust, dirt and the like and improving the chemical stability of the recording layer, and the same material as the undercoat layer can be used as the material thereof.

次に、図面について本発明の光情報記録媒体の構成例を
説明する。Next, a configuration example of the optical information recording medium of the present invention will be described with reference to the drawings.

第１図に示すように、本発明の光情報記録媒体は基本的
には基板１上に上記一般式(1)の化合物を含む有機色素
薄膜記録層２を設けたものである。また、記録層は他の
層例えば反射層と積層してもよい。記録層の形成は蒸
着、塗布などの既知の手段によつて行うことができ、塗
布法を用いる場合には有機溶媒例えばジクロルエタンに
溶解してスプレー、ローラーコーテイング、デイツピン
グおよびスピンニングなどの慣用のコーテイング法によ
つて行なわれる。記録層の膜厚は１００Å〜１μｍ好ま
しくは２００〜３０００Åが適当である。As shown in FIG. 1, the optical information recording medium of the present invention basically comprises a substrate 1 on which an organic dye thin film recording layer 2 containing the compound of the general formula (1) is provided. Further, the recording layer may be laminated with another layer such as a reflective layer. The recording layer can be formed by known means such as vapor deposition and coating, and when the coating method is used, it is dissolved in an organic solvent such as dichloroethane and is used in conventional coating such as spraying, roller coating, dipping and spinning. It is done by law. The thickness of the recording layer is 100 Å to 1 μm, preferably 200 to 3000 Å.

また、第２図ないし第４図に示したようにさらに下引き
層３および／または保護層４を設け、前記層の少なくと
も一つに上記一般式(1)の化合物を添加して本発明の目
的を達成することができる。この場合記録層に前記化合
物を含有させてもあるいはさせなくてもよい。上記一般
式(1)の化合物の添加量は全固形分を基準として記録層
に対しては２〜６０重量％好ましくは５〜４０重量％、
下引き層または保護層に対しては２〜９０重量％好まし
くは１０〜５０重量％が適当である。また、下引き層の
膜厚は０．１〜３０μｍ好ましくは０．２〜１０μｍの
範囲がそして保護層の膜厚は０．１μｍ以上好ましくは
５０μｍ以上が適当である。Further, as shown in FIGS. 2 to 4, a subbing layer 3 and / or a protective layer 4 is further provided, and the compound of the general formula (1) is added to at least one of the layers to obtain the present invention. The purpose can be achieved. In this case, the recording layer may or may not contain the above compound. The addition amount of the compound of the general formula (1) is 2 to 60% by weight, preferably 5 to 40% by weight, based on the total solid content of the recording layer,
2 to 90% by weight, preferably 10 to 50% by weight, is suitable for the undercoat layer or the protective layer. The thickness of the undercoat layer is 0.1 to 30 μm, preferably 0.2 to 10 μm, and the thickness of the protective layer is 0.1 μm or more, preferably 50 μm or more.

さらに、本発明による光情報記録媒体の別の構成として
は、第１図ないし第４図に示した同一構成の２枚の記録
媒体（場合によりその１枚を基板のみとして）を用い色
素薄膜記録層を内側に配置して密封したいわゆるエアー
サンドイツチ構造にしてもよいし、保護層を介して接着
したいわゆる密着サンドイツチ構造（貼り合せ構造）に
してもよい。Further, as another constitution of the optical information recording medium according to the present invention, a dye thin film recording is carried out by using two recording mediums of the same constitution shown in FIGS. 1 to 4 (in some cases, one of them is a substrate only). The layer may be arranged inside and hermetically sealed, or may be a so-called close-sealing structure (bonding structure) in which the layers are adhered via a protective layer.

本発明における基板は基板側から書込み記録を行なう場
合は使用レーザ光に対して透明でなければならず、また
記録側から行なう場合は透明である必要はない。基板と
してはガラス、ポリカーボネート、ポリメチルメタクリ
レートが通常使用されるがその他記録媒体に使用される
ものならどれでもよい。The substrate in the present invention must be transparent to the laser light used when writing and recording from the substrate side, and need not be transparent when performing recording from the recording side. As the substrate, glass, polycarbonate and polymethylmethacrylate are usually used, but any substrate used for other recording media may be used.

〔実施例〕〔Example〕

以下に比較例と共に実施例を掲げて本発明をさらに説明
するが、これに限定されるものではない。Hereinafter, the present invention will be further described with reference to Examples together with Comparative Examples, but the present invention is not limited thereto.

実施例 １ 一般式 の色素および前掲例示化合物Ａを重量比１００：１５で
１，２−ジクロルエタンに溶解し、これをポリメチルメ
タクリレート（以下、「PMMA」と略記）基板上に回転塗
布して厚さ約５００Åの記録層を形成した。このように
して作製した記録媒体に波長７９０ｎｍの半導体レーザ
光を基板側より記録周波数０．６８７５MHz、ピツト長
０．９μｍで記録再生し、そのスペクトル解析（スキヤ
ニングフイルター、バンド幅３０KHz）を行なつて、初
期の反射率およびＣ／Ｎを測定した。次に、同じ記録媒
体に５４０００ルツクスのタングステン光を５０時間照
射した後の反射率およびＣ／Ｎを測定した。Example 1 General formula Dye and the above exemplified compound A were dissolved in 1,2-dichloroethane at a weight ratio of 100: 15, and this was spin-coated on a polymethylmethacrylate (hereinafter abbreviated as "PMMA") substrate to record a thickness of about 500Å. Layers were formed. A semiconductor laser beam having a wavelength of 790 nm is recorded and reproduced on the recording medium thus manufactured from the substrate side at a recording frequency of 0.6875 MHz and a pit length of 0.9 μm, and its spectrum analysis (scanning filter, band width 30 KHz) is performed. Then, the initial reflectance and C / N were measured. Next, the reflectance and C / N after irradiating the same recording medium with tungsten light of 54000 lux for 50 hours were measured.

実施例 ２ 実施例１に記載した色素および化合物Ａの代りに一般式 の色素および前掲例示化合物Ｇを用いてその混合比を１
００：３０とした以外には実施例１と同様にして記録媒
体を作製しその評価を行なつた。Example 2 Instead of the dye and compound A described in Example 1, the general formula And the mixing ratio of the above exemplified compound G are 1
A recording medium was prepared and evaluated in the same manner as in Example 1 except that it was set to 00:30.

実施例 ３ 実施例１に記載した化合物Ａの代りに化合物Ｃを用いた
以外には実施例１と同様にして記録媒体を作製しその評
価を行なつた。Example 3 A recording medium was prepared and evaluated in the same manner as in Example 1 except that the compound C was used instead of the compound A described in Example 1.

実施例 ４ 実施例１に記載した色素および化合物Ａの代りに一般式 の色素および化合物Ｄを用いた以外には実施例１と同様
にして記録媒体を作製しその評価を行なつた。Example 4 Instead of the dye and compound A described in Example 1, a compound of the general formula A recording medium was prepared and evaluated in the same manner as in Example 1 except that the dye and compound D were used.

実施例 ５ 化合物Ｄおよびポリカーボネートを重量比７：３で１，
２−ジクロルエタンに溶解したものをPMMA基板上に塗布
して厚さ０．２μｍの下引き層を形成し、その上に実施
例４に記載したシアニン色素のみの記録層を設けて記録
媒体を作製しその評価を行なつた。Example 5 Compound D and polycarbonate were added in a weight ratio of 7: 3
What was dissolved in 2-dichloroethane was applied on a PMMA substrate to form an undercoating layer having a thickness of 0.2 μm, and the recording layer containing only the cyanine dye described in Example 4 was provided thereon to prepare a recording medium. The evaluation was carried out.

実施例 ６ 実施例１で形成した記録層の上に、化合物Ａおよびポリ
アミド樹脂を重量比７：３でメタノールに溶解したもの
を塗布して厚さ１μｍの保護層を設けて記録媒体を作製
しその評価を行なつた。Example 6 On the recording layer formed in Example 1, a compound A and a polyamide resin dissolved in methanol at a weight ratio of 7: 3 was applied to provide a protective layer having a thickness of 1 μm to prepare a recording medium. The evaluation was done.

比較例 １ 実施例１で用いた色素のみからなる記録層を形成した以
外には実施例１と同様にして記録媒体を作製しその評価
を行なつた。Comparative Example 1 A recording medium was prepared and evaluated in the same manner as in Example 1 except that the recording layer composed of only the dye used in Example 1 was formed.

比較例 ２ 実施例２で用いた色素のみからなる記録層を形成した以
外には実施例２と同様にして記録媒体を作製しその評価
を行なつた。Comparative Example 2 A recording medium was prepared and evaluated in the same manner as in Example 2 except that the recording layer composed of only the dye used in Example 2 was formed.

比較例 ３ 実施例４で用いた色素のみからなる記録層を形成した以
外には実施例４と同様にして記録媒体を作製しその評価
を行なつた。Comparative Example 3 A recording medium was prepared and evaluated in the same manner as in Example 4 except that the recording layer made of only the dye used in Example 4 was formed.

上記実施例１〜６および比較例１〜３で作製した光情報
記録媒体の評価結果を以下の表にまとめて示す。The evaluation results of the optical information recording media produced in Examples 1 to 6 and Comparative Examples 1 to 3 are summarized in the table below.

〔効 果〕 上述のようにして構成された本発明の光情報記録媒体は
すぐれた光安定性と耐読出し回数を与える。 [Effect] The optical information recording medium of the present invention configured as described above provides excellent optical stability and the number of read times.

【図面の簡単な説明】 第１図ないし第４図は本発明の光情報記録媒体の構成を
示す断面図である。 １……基板、２……有機色素薄膜記録層、３……下引き
層、４……保護層。BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 to FIG. 4 are sectional views showing the structure of an optical information recording medium of the present invention. 1 ... Substrate, 2 ... Organic dye thin film recording layer, 3 ... Undercoat layer, 4 ... Protective layer.

Claims (3)

【特許請求の範囲】[Claims] 【請求項１】基板上にシアニン色素またはメロシアニン
色素を主成分とする有機色素薄膜記録層を少なくとも有
する光情報記録媒体において、下記一般式(I)で表わさ
れる化合物が含有されていることを特徴とする光情報記
録媒体。 一般式(1) 〔式中、Rは低級アルキル基を、Xはヘキサフルオロ砒酸
イオン、ヘキサフルオロアンチモン酸イオン、フッ化ホ
ウ素酸イオン、過塩素酸イオン、トリフルオロ酢酸イオ
ン又は過沃素酸イオンを、Aは (nは1又は2)を表わす。〕1. An optical information recording medium having at least an organic dye thin film recording layer containing a cyanine dye or a merocyanine dye as a main component on a substrate, characterized by containing a compound represented by the following general formula (I). Optical recording medium. General formula (1) [In the formula, R is a lower alkyl group, X is hexafluoroarsenate ion, hexafluoroantimonate ion, fluoroborate ion, perchlorate ion, trifluoroacetate ion or periodate ion, and A is (n is 1 or 2). ] 【請求項２】基板と有機色素薄膜記録層の間に下引層及
び/又は有機色素薄膜記録層の上に保護層が設けられて
いる特許請求の範囲第1項記載の光情報記録媒体。2. The optical information recording medium according to claim 1, wherein an undercoat layer and / or a protective layer is provided on the organic dye thin film recording layer between the substrate and the organic dye thin film recording layer. 【請求項３】有機色素薄膜記録層、下引層及び保護層の
何れかに前記一般式(I)で表わされる化合物が含有され
ている特許請求の範囲第1項又は第2項記載の光情報記録
媒体。3. The light according to claim 1, wherein any one of the organic dye thin film recording layer, the undercoat layer and the protective layer contains the compound represented by the general formula (I). Information recording medium.
JP59018222A 1984-02-06 1984-02-06 Optical information recording medium Expired - Lifetime JPH0626028B2 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP59018222A JPH0626028B2 (en) 1984-02-06 1984-02-06 Optical information recording medium
DE19853503995 DE3503995A1 (en) 1984-02-06 1985-02-06 OPTICAL INFORMATION RECORD CARRIER
GB08503022A GB2155811B (en) 1984-02-06 1985-02-06 Optical information recording medium
US06/698,701 US4656121A (en) 1984-02-06 1985-02-06 Optical information recording medium

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP59018222A JPH0626028B2 (en) 1984-02-06 1984-02-06 Optical information recording medium

Publications (2)

Publication Number Publication Date
JPS60163245A JPS60163245A (en) 1985-08-26
JPH0626028B2 true JPH0626028B2 (en) 1994-04-06

Family

ID=11965613

Family Applications (1)

Application Number Title Priority Date Filing Date
JP59018222A Expired - Lifetime JPH0626028B2 (en) 1984-02-06 1984-02-06 Optical information recording medium

Country Status (1)

Country Link
JP (1) JPH0626028B2 (en)

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WO2007119672A1 (en) 2006-04-10 2007-10-25 Fujifilm Corporation Optical recording medium, visible information recording method and use of dye compound
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