JPH074977B2 - Optical information recording medium - Google Patents
Optical information recording mediumInfo
- Publication number
- JPH074977B2 JPH074977B2 JP62195795A JP19579587A JPH074977B2 JP H074977 B2 JPH074977 B2 JP H074977B2 JP 62195795 A JP62195795 A JP 62195795A JP 19579587 A JP19579587 A JP 19579587A JP H074977 B2 JPH074977 B2 JP H074977B2
- Authority
- JP
- Japan
- Prior art keywords
- recording medium
- optical information
- information recording
- alkyl group
- reflectance
- 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
Links
- 230000003287 optical effect Effects 0.000 title claims description 30
- 239000000758 substrate Substances 0.000 claims description 21
- 125000000217 alkyl group Chemical group 0.000 claims description 13
- ANRHNWWPFJCPAZ-UHFFFAOYSA-M thionine Chemical compound [Cl-].C1=CC(N)=CC2=[S+]C3=CC(N)=CC=C3N=C21 ANRHNWWPFJCPAZ-UHFFFAOYSA-M 0.000 claims description 12
- VLTRZXGMWDSKGL-UHFFFAOYSA-N perchloric acid Chemical compound OCl(=O)(=O)=O VLTRZXGMWDSKGL-UHFFFAOYSA-N 0.000 claims description 7
- RKJUIXBNRJVNHR-UHFFFAOYSA-N indolenine group Chemical group N1=CCC2=CC=CC=C12 RKJUIXBNRJVNHR-UHFFFAOYSA-N 0.000 claims description 6
- 229910001413 alkali metal ion Chemical group 0.000 claims description 4
- 125000005843 halogen group Chemical group 0.000 claims description 4
- 125000001424 substituent group Chemical group 0.000 claims description 4
- LBLYYCQCTBFVLH-UHFFFAOYSA-N 2-Methylbenzenesulfonic acid Chemical compound CC1=CC=CC=C1S(O)(=O)=O LBLYYCQCTBFVLH-UHFFFAOYSA-N 0.000 claims description 3
- 239000002253 acid Substances 0.000 claims description 3
- 125000004122 cyclic group Chemical group 0.000 claims description 3
- 150000001450 anions Chemical class 0.000 claims description 2
- 125000000542 sulfonic acid group Chemical group 0.000 claims description 2
- 239000000975 dye Substances 0.000 description 14
- 239000010410 layer Substances 0.000 description 12
- 239000004065 semiconductor Substances 0.000 description 5
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 4
- 239000004033 plastic Substances 0.000 description 4
- 229920003023 plastic Polymers 0.000 description 4
- ZWEHNKRNPOVVGH-UHFFFAOYSA-N 2-Butanone Chemical compound CCC(C)=O ZWEHNKRNPOVVGH-UHFFFAOYSA-N 0.000 description 3
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 description 3
- 125000003545 alkoxy group Chemical group 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000004528 spin coating Methods 0.000 description 3
- 229910052714 tellurium Inorganic materials 0.000 description 3
- PORWMNRCUJJQNO-UHFFFAOYSA-N tellurium atom Chemical compound [Te] PORWMNRCUJJQNO-UHFFFAOYSA-N 0.000 description 3
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 2
- HEDRZPFGACZZDS-UHFFFAOYSA-N Chloroform Chemical compound ClC(Cl)Cl HEDRZPFGACZZDS-UHFFFAOYSA-N 0.000 description 2
- LRHPLDYGYMQRHN-UHFFFAOYSA-N N-Butanol Chemical compound CCCCO LRHPLDYGYMQRHN-UHFFFAOYSA-N 0.000 description 2
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 description 2
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- NHQOULZCPKJYMM-UHFFFAOYSA-M (2e)-1,3,3-trimethyl-2-[(2e)-7-(1,3,3-trimethylindol-1-ium-2-yl)hepta-2,4,6-trienylidene]indole;perchlorate Chemical compound [O-]Cl(=O)(=O)=O.CC1(C)C2=CC=CC=C2N(C)C1=CC=CC=CC=CC1=[N+](C)C2=CC=CC=C2C1(C)C NHQOULZCPKJYMM-UHFFFAOYSA-M 0.000 description 1
- RILZRCJGXSFXNE-UHFFFAOYSA-N 2-[4-(trifluoromethoxy)phenyl]ethanol Chemical compound OCCC1=CC=C(OC(F)(F)F)C=C1 RILZRCJGXSFXNE-UHFFFAOYSA-N 0.000 description 1
- FGLBSLMDCBOPQK-UHFFFAOYSA-N 2-nitropropane Chemical compound CC(C)[N+]([O-])=O FGLBSLMDCBOPQK-UHFFFAOYSA-N 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 1
- 239000006096 absorbing agent Substances 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000005456 alcohol based solvent Substances 0.000 description 1
- 125000005157 alkyl carboxy group Chemical group 0.000 description 1
- 125000005189 alkyl hydroxy group Chemical group 0.000 description 1
- 125000004429 atom Chemical group 0.000 description 1
- 125000000484 butyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 125000004432 carbon atom Chemical group C* 0.000 description 1
- 239000011247 coating layer Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 125000004177 diethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 1
- DMBHHRLKUKUOEG-UHFFFAOYSA-N diphenylamine Chemical group C=1C=CC=CC=1NC1=CC=CC=C1 DMBHHRLKUKUOEG-UHFFFAOYSA-N 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 125000001301 ethoxy group Chemical group [H]C([H])([H])C([H])([H])O* 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000001307 helium Substances 0.000 description 1
- 229910052734 helium Inorganic materials 0.000 description 1
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 1
- XMBWDFGMSWQBCA-UHFFFAOYSA-N hydrogen iodide Chemical compound I XMBWDFGMSWQBCA-UHFFFAOYSA-N 0.000 description 1
- 239000005453 ketone based solvent Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 239000000113 methacrylic resin Substances 0.000 description 1
- 125000000956 methoxy group Chemical group [H]C([H])([H])O* 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 229910052754 neon Inorganic materials 0.000 description 1
- GKAOGPIIYCISHV-UHFFFAOYSA-N neon atom Chemical compound [Ne] GKAOGPIIYCISHV-UHFFFAOYSA-N 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- VLTRZXGMWDSKGL-UHFFFAOYSA-M perchlorate Inorganic materials [O-]Cl(=O)(=O)=O VLTRZXGMWDSKGL-UHFFFAOYSA-M 0.000 description 1
- IEQIEDJGQAUEQZ-UHFFFAOYSA-N phthalocyanine Chemical compound N1C(N=C2C3=CC=CC=C3C(N=C3C4=CC=CC=C4C(=N4)N3)=N2)=C(C=CC=C2)C2=C1N=C1C2=CC=CC=C2C4=N1 IEQIEDJGQAUEQZ-UHFFFAOYSA-N 0.000 description 1
- 229920003229 poly(methyl methacrylate) Polymers 0.000 description 1
- 229920005668 polycarbonate resin Polymers 0.000 description 1
- 239000004431 polycarbonate resin Substances 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 229920001225 polyester resin Polymers 0.000 description 1
- 239000004645 polyester resin Substances 0.000 description 1
- 239000004926 polymethyl methacrylate Substances 0.000 description 1
- 239000004800 polyvinyl chloride Substances 0.000 description 1
- 229920000915 polyvinyl chloride Polymers 0.000 description 1
- 125000001436 propyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 238000002310 reflectometry Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- -1 t- Butyl Chemical group 0.000 description 1
- YLQBMQCUIZJEEH-UHFFFAOYSA-N tetrahydrofuran Natural products C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 description 1
- 125000003698 tetramethyl group Chemical group [H]C([H])([H])* 0.000 description 1
- 238000001771 vacuum deposition Methods 0.000 description 1
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
- G11B7/247—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
Landscapes
- Thermal Transfer Or Thermal Recording In General (AREA)
- Optical Record Carriers And Manufacture Thereof (AREA)
Description
【発明の詳細な説明】 産業上の利用分野 本発明は、光情報記録媒体に係り、特にヒートモードに
よる追記型光情報記録媒体に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an optical information recording medium, and more particularly to a write-once type optical information recording medium in a heat mode.
従来の技術 文字、図形等の画像あるいは音声等のデータを記録し、
再生する手段としてヒートモードによる追記型光情報記
録媒体を使用することが行われている。Conventional technology Records data such as images such as characters and figures, or voice,
A write-once optical information recording medium in a heat mode is used as a reproducing means.
このヒートモードによる追記型光情報記録媒体は、例え
ばテルル等の低融点金属を絶縁基板上に真空蒸着させる
ことによって作成されるもので、これに記録を行うとき
は、例えばカメラで撮った画像の信号を例えば半導体レ
ーザやヘリウム・ネオンレーザ等による光信号に変換し
てテルルの真空蒸着膜に照射し、その膜の反射率を変化
させ画像に対応するこの反射率の相違のパターンを形成
する。一方、その読み出しを行うときは、弱いレーザ光
で走査することにより上記反射率の相違を検知し、この
信号を画像信号に変換して画像を表示させるものであ
る。The write-once type optical information recording medium in this heat mode is created by vacuum-depositing a low-melting metal such as tellurium on an insulating substrate.When recording on this, for example, an image taken by a camera is used. A signal is converted into an optical signal by, for example, a semiconductor laser or a helium / neon laser, and is irradiated on a vacuum deposition film of tellurium, and the reflectance of the film is changed to form a pattern of this reflectance difference corresponding to an image. On the other hand, when the reading is performed, the difference in reflectance is detected by scanning with a weak laser beam, this signal is converted into an image signal, and an image is displayed.
ところで、最近上記のようなテルルの蒸着膜を用いる代
わりに、金属に比べ反射率は低いが有機色素材料の中で
は比較的反射率の高いパナジルフタロシアニン、シアニ
ン色素等の有機色素を記録層に用いた光情報記録媒体が
注目されるようになってきた。その理由は 記録層をスピンコート法と呼ばれる、回転の遠心力
を利用して基板に滴下した塗料を周辺に行き渡らせる塗
装方法により形成でき、これにより真空系を用いずに容
易に製造でき、生産性を高めることができること、 耐酸化性に優れ腐食されないこと 熱伝導性が低いので熱の影響を周辺部に及ぼすこと
なく局所的な加熱ができること 等の優れた性質を備え、高密度記録に適することによ
る。By the way, recently, instead of using a deposited film of tellurium as described above, an organic dye such as panadyl phthalocyanine or cyanine dye, which has a lower reflectance than metal but relatively high reflectance among organic dye materials, is used as a recording layer. The optical information recording medium used has been attracting attention. The reason for this is that the recording layer can be formed by a coating method called spin coating, in which the centrifugal force of rotation is used to spread the paint dropped on the substrate to the periphery, which makes it easy to manufacture without using a vacuum system, It is suitable for high-density recording because it has excellent properties such as high heat resistance, excellent oxidation resistance and no corrosion, and low local heat conductivity that allows local heating without affecting the surrounding area. It depends.
特にシアニン色素は、半導体レーザ光の波長域700〜900
nmに高い吸収、反射を示すことから注目されている。In particular, cyanine dyes are used in the semiconductor laser light wavelength range of 700 to 900.
It is attracting attention because it exhibits high absorption and reflection at nm.
発明が解決しようとする課題 しかしながら、従来のシアニン色素系記録層をプラスチ
ック基板上に有する光情報記録媒体においては、750〜8
10nmの半導体レーザに対し、読み取りを行うときのプラ
スチック基板側かち入射し、シアニン色素系記録層で反
射するときの反射率を率を30％以上にした材料を使用し
た例は知られていない。However, in the optical information recording medium having a conventional cyanine dye-based recording layer on a plastic substrate, 750 to 8
There is no known example of using a material having a reflectance of 30% or more when entering a semiconductor laser of 10 nm through the plastic substrate side for reading and reflecting it on the cyanine dye recording layer.
例えば、反射率が高いことで一般に良く知られている一
般式〔II〕 （ただしR3、R3′はアルキル基、アルコキシ基、アレキ
ルヒドロキシ基又はアルキルカルボキシル基、X2 -はハ
ロゲン原子、過塩素酸、ホウフッ化水素酸、トルエンス
ルホン酸又はアルキルスルホン酸等の陰イオンを表
す。） で示されるシアニン色素を用いて記録層をプラスチック
基板上に設けた光情報記録媒体について、プラスチック
基板の屈折率ｎ（約1.5）を用いてこの基板を通った光
の記録層の複素屈折率n-ikを求め、これから記録層の反
射率を求め、その最大反射率になるように膜厚を最適化
したとき、最も良い反射率を示す波長は約880nmであ
り、良く用いられている780nmの半導体レーザの反射率
はこの約半分に過ぎない。For example, a general formula [II] that is well known for its high reflectance (However, R 3 and R 3 ′ are an alkyl group, an alkoxy group, an alkylhydroxy group or an alkylcarboxyl group, X 2 − is a halogen atom, perchloric acid, fluoroboric acid, toluenesulfonic acid, an alkylsulfonic acid, or the like. An optical information recording medium in which a recording layer is formed on a plastic substrate by using a cyanine dye represented by (4), and a recording layer of light passing through this substrate by using the refractive index n (about 1.5) of the plastic substrate. When the complex index of refraction n-ik of is calculated, the reflectance of the recording layer is calculated from this, and the film thickness is optimized so that it becomes the maximum reflectance, the wavelength showing the best reflectance is about 880 nm, which is often used. The reflectivity of the known 780 nm semiconductor laser is only about half of this.
このように反射率が低い場合、サーボ信号が小さいため
エラーを発生し易くなったり、再生信号が小さいため十
分な出力が得られなかったりする。また、十分なC/Nを
とるために光学系、電気系に厳しい精度や変更を求めな
ければならないという問題点もあり、また、一般のCD
（コンパクトディスク）プレーヤーでは再生できないと
いう問題点もある。When the reflectance is low as described above, an error is likely to occur because the servo signal is small, or a sufficient output cannot be obtained because the reproduction signal is small. There is also the problem that strict precision and changes must be made to the optical system and electrical system in order to obtain a sufficient C / N.
(Compact disc) There is also a problem that it cannot be played on a player.
本発明の目的は、一般のCDプレーヤーにも使用できる40
％以上の反射率を有するシアニン色素系記録層を有する
光情報記録媒体を提供することにある。The object of the present invention can be used for general CD players.
Another object of the present invention is to provide an optical information recording medium having a cyanine dye-based recording layer having a reflectance of at least%.
課題を解決するための手段 本発明は、上記課題を解決するために、透明な基板に下
記一般式〔Ｉ〕で表されるインドレニン系シアニンを含
有する記録層を有する光情報記録媒体において、上記基
板側から入射した750〜810nmのレーザ光の反射率が40％
以上である光情報記録媒体を提供するものである。。Means for Solving the Problem In order to solve the above problems, the present invention provides an optical information recording medium having a recording layer containing an indolenine cyanine represented by the following general formula [I] on a transparent substrate, The reflectance of laser light of 750 to 810 nm incident from the substrate side is 40%
The above-mentioned optical information recording medium is provided. .
（ただし、R1、R1′はアルキル基又はアルカリ金属イオ
ン若しくはアルキル基と結合したアルキルスルホン酸基
を示し、 R2、R2′はそれぞれ単数又は複数の置換基を示し、それ
ぞれにおいてアルキル基のうちから同種又は異種の１〜
３つを有し、 X1 -はハロゲン原子、過塩素酸、ホウフッ化水素酸、ト
ルエンスルホン酸の陰イオンを表し、R1、R1′がアルカ
リ金属イオンと結合した基を有するときはX1 -は存在し
なくとも良く、 Ｂはペンタメチン（CH＝CH2CH＝）又は置換ペンタ
メチンであり、複数の炭素間にわたる環状側鎖を有して
いても良い。） 次に本発明を詳細に説明する。 (Wherein, R 1, R 1 'represents an alkyl sulfonic acid group bound to an alkyl group or an alkali metal ion or an alkyl group, R 2, R 2' each represent one or more substituents, an alkyl group in each From the same or different types of
X 1 - represents a halogen atom, an anion of perchloric acid, borofluoric acid, or toluenesulfonic acid, and when R 1 and R 1 ′ have a group bonded to an alkali metal ion, X 1- 1 - may not be present, B is pentamethine (CH = CH 2 CH =) or substituted pentamethine, and may have a cyclic side chain extending over a plurality of carbons. ) Next, the present invention will be described in detail.
本発明においては上記一般式［Ｉ］で示される化合物を
用いるが、R2、R2′のアルキル基としてはメチル、エチ
ル、プロピル、ブチル等の炭素数１から８のアルキル基
が好ましく、Ｂの環状側鎖としてはペンタメチン鎖の複
数炭素間、例えば第２、第４炭素間に結合し、例えば４
員環、５員環、６員環を形成する炭素その他の原子から
なる結合鎖が挙げられ、Ｂは置換基を有していても良
い。この置換基にはハロゲン原子、ジフェニルアミン
基、アルコキシ基（例えばメトキシ、エトキシ等の低級
アルコキシ基）、アルキル基（例えばメチル、エチル等
の低級アルキル基）などが挙げられる。In the present invention, the compound represented by the above general formula [I] is used. As the alkyl group for R 2 and R 2 ′, an alkyl group having 1 to 8 carbon atoms such as methyl, ethyl, propyl and butyl is preferable, and B is The cyclic side chain of is a bond between a plurality of carbons of a pentamethine chain, for example, between the second and fourth carbons,
Examples of the bonding chain include carbon and other atoms forming a member ring, a 5-membered ring, and a 6-membered ring, and B may have a substituent. Examples of this substituent include a halogen atom, a diphenylamine group, an alkoxy group (for example, a lower alkoxy group such as methoxy and ethoxy), an alkyl group (for example, a lower alkyl group such as methyl and ethyl).
具体的には後述の実施例に挙げられるもののほか例えば
次のものが例示できる。Specifically, in addition to those mentioned in the examples below, the following can be exemplified.
本発明に係わる光情報記録媒体を製造するには、上記一
般式［Ｉ］で示されるインドレニン系シアニンを溶解し
た色素溶液を調製し、これを基板に塗布するが、この色
素溶液にはメタノール、エタノール等のアルコール系溶
剤、アセトン、メチルエチルケトン等のケトン系溶剤、
テトラヒドロフラン、ジメチルホルムアミド、クロロホ
ルム等各種溶剤を用いることができる。この場合のシア
ニン色素の混合割合は１％〜10％が好ましい。 In order to manufacture the optical information recording medium according to the present invention, a dye solution in which the indolenine cyanine represented by the above general formula [I] is dissolved is prepared and applied to a substrate. , Alcohol-based solvents such as ethanol, ketone-based solvents such as acetone and methyl ethyl ketone,
Various solvents such as tetrahydrofuran, dimethylformamide and chloroform can be used. In this case, the mixing ratio of the cyanine dye is preferably 1% to 10%.
また、本発明に用いられる基板にはガラス、エポキシ樹
脂、メタクリル樹脂、ポリカーボネート樹脂、ポリエス
テル樹脂、ポリ塩化ビニル樹脂等が使用できる。Further, glass, epoxy resin, methacrylic resin, polycarbonate resin, polyester resin, polyvinyl chloride resin or the like can be used for the substrate used in the present invention.
また、上記シアニン色素溶液を基板に塗布するにはスピ
ンコート法を用いることが好ましい。この場合乾燥後の
塗布層の厚さは従来用いられるものが適用できる。Further, it is preferable to use a spin coating method to apply the cyanine dye solution to the substrate. In this case, as the thickness of the coating layer after drying, those conventionally used can be applied.
なお、記録再生時にはエアサンドイッチ構造を形成する
などしても良い。An air sandwich structure may be formed during recording and reproduction.
また、本発明において塗布される記録層には一重項酸素
クエンチャー、光吸収剤等の他の化合物を含んでいても
良い。Further, the recording layer applied in the present invention may contain other compounds such as a singlet oxygen quencher and a light absorber.
また、本発明においては上記一般式〔Ｉ〕の化合物を複
数併用することもできる。Further, in the present invention, a plurality of compounds of the above general formula [I] can be used in combination.
実施例 次に本発明を実施例に基づき詳細に説明する。EXAMPLES Next, the present invention will be described in detail based on examples.
実施例１ 1,1′‐ジブチル3,3,5,3′,3′,5′‐ヘキサメチルイン
ドジカーボシアニンフルオロボレート 0.5gをエタノール10ccに溶解し、ポリメチルメタクリレ
ート基板上にスピンコート法により塗布・乾燥し、500
Åの記録層を形成した光情報記録媒体を作製した。Example 1 1,1'-dibutyl 3,3,5,3 ', 3', 5'-hexamethyl indodicarbocyanine fluoroborate Dissolve 0.5 g in 10 cc of ethanol, apply on the polymethylmethacrylate substrate by spin coating method and dry,
An optical information recording medium having a recording layer of Å was prepared.
この得られた光情報記録媒体に790nmの半導体レーザを
用いて線速1.2m/秒、記録周波数0.5MHzで信号を記録し
たところ、記録パワーは5.2mWであり、ピット形状は良
好で再生時のC/Nは48dBであった。When a signal was recorded at a linear velocity of 1.2 m / sec and a recording frequency of 0.5 MHz using a 790 nm semiconductor laser on the obtained optical information recording medium, the recording power was 5.2 mW, and the pit shape was good at the time of reproduction. C / N was 48 dB.
また、基板側から入射した上記レーザの反射率は42％で
あった。The reflectance of the laser incident from the substrate side was 42%.
実施例２ 1,1′‐ジエチル3,3,3′,3′テトラメチル5,5′‐ジt-
ブチルインドジカーボシアニンパークロレート 0.5gをブタノール10ccに溶解し、実施例１と同様にして
光情報記録媒体を作製し、実施例１と同様に記録を行っ
たところ、記録パワーは4.9mWであり、ピット形状は良
好で再生時のC/Nは47dBであった。Example 2 1,1'-diethyl 3,3,3 ', 3' tetramethyl 5,5'-di t-
Butyl indodicarbocyanine perchlorate When 0.5 g was dissolved in 10 cc of butanol and an optical information recording medium was prepared in the same manner as in Example 1 and recording was performed in the same manner as in Example 1, the recording power was 4.9 mW, the pit shape was good, and the reproduction was performed. The C / N at that time was 47 dB.
また、基板側から入射した上記レーザの反射率は45％で
あった。Further, the reflectance of the laser incident from the substrate side was 45%.
比較例１ 1,1′,3,3,3′,3′‐ヘキサメチルインドトリカーボシ
アニンパークロレート（日本感光色素研究所製商品番号
NK2421） を用いた以外は実施例１と同様にして光情報記録媒体を
作製した。この得られた光情報記録媒体に実施例１と同
様の記録を行ったところ、記録パワーは2.4mWであり、
再生時のC/Nは49dBであった。また、基板側から入射し
た上記レーザの反射率は28％であった。Comparative Example 1 1,1 ', 3,3,3', 3'-Hexamethylindotricarbocyanine perchlorate (product number manufactured by Japan Photosensitive Dye Research Institute
NK2421) An optical information recording medium was produced in the same manner as in Example 1 except that was used. When recording was performed on this obtained optical information recording medium in the same manner as in Example 1, the recording power was 2.4 mW,
The C / N during playback was 49 dB. The reflectance of the laser incident from the substrate side was 28%.
比較例２ 1,1′ジエチル3,3,3′,3′テトラメチルインドトリカー
ボシアニンアイオダイドを２−ニトロプロパンに溶解し
て用い、膜厚を450Åとしたこと以外は実施例１と同様
にして光情報記録媒体を作製した。この光記録媒体の基
板側から入射した上記レーザーの反射率は28％であっ
た。Comparative Example 2 Same as Example 1 except that 1,1'diethyl 3,3,3 ', 3' tetramethylindotricarbocyanine iodide was dissolved in 2-nitropropane and the film thickness was 450 Å. Then, an optical information recording medium was produced. The reflectance of the laser incident from the substrate side of this optical recording medium was 28%.
次に実用性試験を行った。 Next, a practicality test was conducted.
上記実施例及び比較例で得た光情報記録媒体の上記反射
率がCDプレーヤーにて十分かどうか各反射率の場合の市
販の各社CDプレーヤー22機種に於いての再生可能な機種
はいくつあるか（再生可能率（プレーヤビリティー））
を調べた。Whether the above-mentioned reflectance of the optical information recording media obtained in the above Examples and Comparative Examples is sufficient for a CD player. How many models are reproducible among 22 commercially available CD players of each company for each reflectance? (Reproducibility (playability))
I checked.
試験に用いたCDプレーヤーは以下のとおりである。The CD players used in the test are as follows.
ソニー社製 CDP-101、CDP-502ES、CDP-570、CDP-338ESD、CFP-D70 松下電器産業社製 SL-PA10（Panasonic）、SL-120（Technics）、SL-333
（Technics）、SL-500（Technics）、SL-770（Technic
s）、SL-1200（Technics）、SL-X845（Technics） パイオニア社製 PD-535、PD-4700 ヤマハ社製 CD-1000 日本コロムビア社製 DCD-1650G ケンウッド社製 DP-8010 日本電気社製 CD-410、CD-430 日本ビクター社製 XL-V501 日本マランツ社製 CD-34 シャープ社製 QT-35CD 評価方法としては、フォーカスサーボ及びトラッキング
サーボが作動し、TOC情報の読み出しが可能で、なおか
つ記録された情報が実際に再生できた光情報記録媒体を
「再生可能」とした。Sony CDP-101, CDP-502ES, CDP-570, CDP-338ESD, CFP-D70 Matsushita Electric Industrial Co. SL-PA10 (Panasonic), SL-120 (Technics), SL-333
(Technics), SL-500 (Technics), SL-770 (Technic
s), SL-1200 (Technics), SL-X845 (Technics) Pioneer PD-535, PD-4700 Yamaha CD-1000 Nippon Columbia DCD-1650G Kenwood DP-8010 NEC Denki CD -410, CD-430 Nippon Victor XL-V501 Nippon Marantz CD-34 Sharp QT-35CD As an evaluation method, the focus servo and tracking servo are activated, and the TOC information can be read out and recorded. The optical information recording medium on which the recorded information could actually be reproduced was defined as "reproducible".
そして、「再生可能」と評価したCDプレーヤーの機種の
その総数に対する割合を「再生可能率（プレーヤービリ
ティ）（％）」とした。The percentage of the total number of CD player models that were evaluated as "reproducible" was defined as "reproducibility (playability) (%)".
上記結果から、本発明による光情報記録媒体は従来の光
情報記録媒体に比較して「再生可能率」の点で顕著な相
違となることがわかる。この相違は、従来の光情報記録
媒体ではCDプレーヤーではほとんど再生不可能であるの
に対し、本発明では再生可能な機種が７割以上あるとい
う実用上の格段の効果の相違となる。 From the above results, it can be seen that the optical information recording medium according to the present invention is significantly different from the conventional optical information recording medium in terms of “reproducibility”. This difference means that the conventional optical information recording medium can hardly be reproduced by a CD player, whereas the present invention has a reproducible model of 70% or more, which is a significant difference in practical use.
発明の効果 本発明によれば、上記一般式〔Ｉ〕のシアニン色素を用
いた記録層を透明な基板に設け、基板側からのレーザ光
を入射した場合の反射率を40％以上にしたので、再生信
号の大きい十分な出力が得られ、従来の光学系、電気系
に厳しい精度や変更を求めることなく十分なC/Nをとる
ことができるとともに、高反射率の再生専用ディスクと
同じように簡易な市販の一般のCDプレーヤーで再生でき
る機種を例えば少なくとも７割以上にすることができ、
その実用性を著しく高めることができる。EFFECTS OF THE INVENTION According to the present invention, the recording layer using the cyanine dye of the general formula [I] is provided on the transparent substrate, and the reflectance when the laser light from the substrate side is incident is 40% or more. , A large enough reproduction signal can be obtained, sufficient C / N can be obtained without requiring severe precision or change in the conventional optical system and electric system, and it is the same as a high reflectance read-only disc. It is possible to increase the number of models that can be played on a simple commercial CD player to at least 70%,
Its practicality can be remarkably enhanced.
また、有機色素を用いる従来と同じような簡便な方法で
光情報記録媒体を作製することができる。Further, the optical information recording medium can be produced by a simple method similar to the conventional method using an organic dye.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 石黒 隆 東京都台東区上野１丁目２番12号 太陽誘 電株式会社内 (56)参考文献 特開 昭59−85791（ＪＰ，Ａ) 特開 昭60−214994（ＪＰ，Ａ) ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Takashi Ishiguro 1-2-12 Ueno Taito-ku, Tokyo Within Taiyo Denki Co., Ltd. (56) Reference JP-A-59-85791 (JP, A) JP-A-SHO 60-214994 (JP, A)
Claims (1)
インドレニン系シアニンを含有する記録層を有する光情
報記録媒体において、上記基板側から入射した750〜810
nmのレーザ光の反射率が40％以上である光情報記録媒
体。 （ただし、R1、R1′はアルキル基又はアルカリ金属イオ
ン若しくはアルキル基と結合したアルキルスルホン酸基
を示し、 R2、R2′はそれぞれ単数又は複数の置換基を示し、それ
ぞれにおいてアルキル基のうちから同種又は異種の１〜
３つを有し、 X1 -はハロゲン原子、過塩素酸、ホウフッ化水素酸、ト
ルエンスルホン酸の陰イオンを表し、R1、R1′がアルカ
リ金属イオンと結合した基を有するときはX1 -は存在し
なくとも良く、 Ｂはペンタメチン（CH＝CH2CH＝）又は置換ペンタ
メチンであり、複数の炭素間にわたる環状側鎖を有して
いても良い。）1. An optical information recording medium having a recording layer containing an indolenine type cyanine represented by the following general formula [I] on a transparent substrate, and 750 to 810 incident from the substrate side.
An optical information recording medium having a laser light reflectance of nm of 40% or more. (Wherein, R 1, R 1 'represents an alkyl sulfonic acid group bound to an alkyl group or an alkali metal ion or an alkyl group, R 2, R 2' each represent one or more substituents, an alkyl group in each From the same or different types of
X 1 - represents a halogen atom, an anion of perchloric acid, borofluoric acid, or toluenesulfonic acid, and when R 1 and R 1 ′ have a group bonded to an alkali metal ion, X 1- 1 - may not be present, B is pentamethine (CH = CH 2 CH =) or substituted pentamethine, and may have a cyclic side chain extending over a plurality of carbons. )
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62195795A JPH074977B2 (en) | 1987-08-05 | 1987-08-05 | Optical information recording medium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62195795A JPH074977B2 (en) | 1987-08-05 | 1987-08-05 | Optical information recording medium |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6440383A JPS6440383A (en) | 1989-02-10 |
| JPH074977B2 true JPH074977B2 (en) | 1995-01-25 |
Family
ID=16347099
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62195795A Expired - Lifetime JPH074977B2 (en) | 1987-08-05 | 1987-08-05 | Optical information recording medium |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH074977B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2533429Y2 (en) * | 1990-09-20 | 1997-04-23 | 株式会社金田洋鋏製作所 | Nose hair cutting scissors |
Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58194595A (en) * | 1982-05-10 | 1983-11-12 | Canon Inc | optical recording medium |
| JPS5967092A (en) * | 1982-10-11 | 1984-04-16 | Tdk Corp | Optical recording medium |
| JPS5955795A (en) * | 1982-09-27 | 1984-03-30 | Tdk Corp | Optical recording medium |
| JPH0630961B2 (en) * | 1982-11-02 | 1994-04-27 | ティーディーケイ株式会社 | Optical recording medium |
| JPH0613238B2 (en) * | 1982-11-08 | 1994-02-23 | 株式会社リコー | Optical information recording medium |
| JPS60214994A (en) * | 1984-04-11 | 1985-10-28 | Ricoh Co Ltd | Image-recording material |
| JPS60230891A (en) * | 1984-05-01 | 1985-11-16 | Ricoh Co Ltd | optical information recording medium |
| JPS60234886A (en) * | 1984-05-07 | 1985-11-21 | Tdk Corp | Optical recording medium |
| JPS6116891A (en) * | 1984-07-03 | 1986-01-24 | Tdk Corp | Optical recording medium |
| JPH0643147B2 (en) * | 1984-08-13 | 1994-06-08 | 株式会社リコー | Optical information recording medium |
| JP2521702B2 (en) * | 1985-04-26 | 1996-08-07 | 株式会社リコー | Optical information recording medium |
| JPS62173294A (en) * | 1986-01-27 | 1987-07-30 | Olympus Optical Co Ltd | Optical information recording medium |
-
1987
- 1987-08-05 JP JP62195795A patent/JPH074977B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6440383A (en) | 1989-02-10 |
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