JPS60150244A - Optical information recording carrier - Google Patents

Optical information recording carrier

Info

Publication number
JPS60150244A
JPS60150244A JP59005351A JP535184A JPS60150244A JP S60150244 A JPS60150244 A JP S60150244A JP 59005351 A JP59005351 A JP 59005351A JP 535184 A JP535184 A JP 535184A JP S60150244 A JPS60150244 A JP S60150244A
Authority
JP
Japan
Prior art keywords
recording layer
water
substrate
insoluble
cyanine dye
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.)
Granted
Application number
JP59005351A
Other languages
Japanese (ja)
Other versions
JPH0447905B2 (en
Inventor
Fumio Matsui
文雄 松井
Shuichi Yanagisawa
柳沢　秀一
Yoshiyuki Tsunoda
由之 角田
Atsushi Yoshizawa
吉沢　淳志
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.)
Pioneer Corp
Original Assignee
Pioneer Corp
Pioneer Electronic Corp
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 Pioneer Corp, Pioneer Electronic Corp filed Critical Pioneer Corp
Priority to JP59005351A priority Critical patent/JPS60150244A/en
Priority to US06/690,200 priority patent/US4639745A/en
Priority to DE19853500819 priority patent/DE3500819A1/en
Priority to GB08500697A priority patent/GB2152686B/en
Publication of JPS60150244A publication Critical patent/JPS60150244A/en
Publication of JPH0447905B2 publication Critical patent/JPH0447905B2/ja
Granted 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
    • G11B7/247—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
    • 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

Abstract

PURPOSE:To obtain a stable recording layer having excellent humidity resistance while keeping metallic luster by forming the first recording layer consisting of a water-soluble cyanine pigment on a substrate, and laminating the second recording layer consisting of a water-insoluble cyanine pigment on the first layer. CONSTITUTION:A soln. in methanol of indocyanine green as a water-soluble cyanine pigment is spin-coated on a substrate 1 equipped with a guide rack consisting of an acrylic resin such as PMMA (polymethyl methacrylate) to form the first recording layer 11. A soln. in cyclohexane of a water-insoluble cyanine pigment is spin-coated on the first recording layer to form the second recording layer 12. The recording layer is protected by a spacer 6 and a protective plate 4 to obtain an optical disk. The second recording layer can be formed without any unfavorable influences of the water-insoluble cyanine pigment on the surface of the substrate 1 of PMMA, and the recording layer of indocyanine green can also be protected.

Description

【発明の詳細な説明】 炎順Ｌ」 本発明は光学式情報記録担体に関する。[Detailed description of the invention] Enjun L” The present invention relates to an optical information record carrier.

１１炎１ 光学式情報記録担体は、レーザ光を利用して該担体に設
けられた記録層に情報を記録するものであり例えば円盤
状光ディスクとして実用化されている。11 Flame 1 Optical information recording carriers record information on a recording layer provided on the carrier using laser light, and have been put to practical use, for example, as disc-shaped optical discs.

光ディスクの記録層に有機系色素、特にシアニン色素を
含んだ薄膜を用いる技術的思想が特開昭５８−１１４９
８９、特開昭５８−１１２７９０及び特願昭５８−２１
００７７において提案されている。かかる提案における
光ディスクは第１図及び第２図に示されるものであり、
第３図に示す工程により製造される。すなわち、基盤す
なわちサブストレート１は、ＰＭＭＡ　（ポリメチルメ
タクリレート）等のアクリル酸樹脂よりＰ、Ｐ、法又は
インジェクション法を用いて円盤状に成形され、該円盤
上に同心円状又は渦巻状の微細な案内溝（以下ガイドラ
ックと称す）が設けられているものである。サブストレ
ート１をクリーニング工程にて表面の汚れを除去し、シ
アニン色素を溶液にしたものをサブストレート１のガイ
ドラック面上にスピンコード法により均一に被膜する。The technical idea of using a thin film containing an organic dye, especially a cyanine dye, in the recording layer of an optical disk was published in JP-A-58-1149.
89, Japanese Patent Application Publication No. 58-112790 and Japanese Patent Application No. 58-21
0077. The optical disc in this proposal is shown in FIGS. 1 and 2,
It is manufactured by the steps shown in FIG. That is, the base, that is, the substrate 1, is formed into a disk shape from an acrylic acid resin such as PMMA (polymethyl methacrylate) using the P, P, method or injection method, and concentric or spiral fine particles are formed on the disk. A guide groove (hereinafter referred to as a guide rack) is provided. The substrate 1 is subjected to a cleaning process to remove dirt from its surface, and a solution of cyanine dye is uniformly coated on the guide rack surface of the substrate 1 by a spin code method.

その後、ベーキング工程にて被膜面を乾燥させ記録層２
を形成する。形成された記録層２を検査した後、記録層
２を保護するためにパーケージ工程にて記録層２を有し
たサブストレート１上に間隙３を保ってスペーサ６を介
してＰＭＭＡ製保護板４を貼り合わせ、第１図の如き光
ディスクを得る。また第２図の如き記録層２を有するサ
ブストレート１を２枚用いた両面光ディスクも提案され
ている。After that, the coating surface is dried in a baking process to form the recording layer 2.
form. After inspecting the formed recording layer 2, in order to protect the recording layer 2, a protective plate 4 made of PMMA is placed on the substrate 1 having the recording layer 2 through a spacer 6 while maintaining a gap 3 in a packaging process. By pasting them together, an optical disc as shown in FIG. 1 is obtained. Further, a double-sided optical disk using two substrates 1 having recording layers 2 as shown in FIG. 2 has also been proposed.

なお、゛上記スビンコ゛−゛ト法は、サブストレート１
をその中心口りに例えば２．０　Ｏｒｐｍ程度で回転さ
せながら、シアニン色素溶液を緩やかに半径方向に移動
するディスベンザを経てサブストレート１上に滴下せし
め、次いで滴下を止めた後、サブストレート１を例えば
１ｏｏｏｒｐ＋ｎ程度に回転数を上げ余剰溶液分を振り
飛ばし均一なる該溶液の被膜を行う方法である。In addition, the above subincoat method is applied to substrate 1.
The cyanine dye solution is dripped onto the substrate 1 through a dispenser that moves gently in the radial direction while rotating the cyanine dye solution around its center opening at about 2.0 Orpm, and after stopping the dripping, the substrate 1 is For example, the rotation speed is increased to about 1ooorp+n to shake off excess solution and form a uniform coating of the solution.

かかる従来の光ディスクの記録層２はシアニン色素から
なる薄膜であって、その表面はブロンズ光沢若しくは金
属光沢を有し再生時のレーザ光を反射するのに都合が良
い記録層である。また、シアニン色素の薄膜は特定の波
長のレーザ光に対して光を吸収して昇華する故に、記録
時のレーザ光ビームの照射によるビットの形成する記録
層としての機能をも有するものである。さらに、シアニ
ン色素の薄膜は可撓性に優れ、金属膜のように温度変化
によるひびが入りにくいことも確認されている。このよ
うな利点を有する故にシアニン色素単成分による単一薄
膜の記録層が形成されていた。The recording layer 2 of such a conventional optical disk is a thin film made of cyanine dye, and its surface has a bronze luster or a metallic luster, making it a recording layer convenient for reflecting laser light during reproduction. Furthermore, since the cyanine dye thin film absorbs laser light of a specific wavelength and sublimates, it also functions as a recording layer in which bits are formed by irradiation with a laser beam during recording. Furthermore, it has been confirmed that cyanine dye thin films have excellent flexibility and are less prone to cracking due to temperature changes, unlike metal films. Because of these advantages, a single thin film recording layer has been formed using a single cyanine dye component.

しかし乍ら、シアニン色素を溶解せしめる溶剤の多（は
、ケトン系溶剤であり、該溶剤はサブストレートの材質
で広く使用されているＰＭＭＡ゛（ポリメチルメタクリ
レート）を溶かすものである。すなわち、ケトン系溶剤
を用いたシアニン色素溶液をＰ’ＭＭＡのガイドラック
付サブストレートの表面にスピンツー卜する際に該溶液
がその表面を膨潤又は溶解してしまい、記録層の形成後
、シアニン色素の薄膜が有する金属光沢を損なう結果に
なり、実際の光ディスクの製造に即さないという問題が
あった。However, most of the solvents that dissolve cyanine dyes are ketone-based solvents, and these solvents dissolve PMMA (polymethyl methacrylate), which is widely used as a substrate material. When a cyanine dye solution using a system solvent is spun onto the surface of a P'MMA substrate with a guide rack, the solution swells or dissolves the surface, and after the recording layer is formed, a thin film of cyanine dye is formed. This results in a loss of the metallic luster, which poses a problem in that it is not suitable for actual production of optical discs.

」１列１」 本発明の目的は、上記した問題を解決し金属光沢を維持
しつつ耐湿性及び耐候性に優れた情報記録担体を提供す
ることである。"1 row 1" An object of the present invention is to solve the above-mentioned problems and provide an information recording carrier that maintains metallic luster and has excellent moisture resistance and weather resistance.

本発明は、ＰＭＭＡ等のアクリル酸樹脂からなるサブス
トレー−、！面を保護する水溶性シア０ン色索からなる
第１記録層の上に非水溶性シアニン色素からなる第２記
録層を重ね合わせてなることを特徴として、該記録層の
金属光沢を維持しつつ耐湿性に優れた光学式情報記録担
体である。The present invention provides a substray made of acrylic acid resin such as PMMA. A second recording layer made of a water-insoluble cyanine dye is superimposed on a first recording layer made of a water-soluble cyanine dye that protects the surface, and the metallic luster of the recording layer is maintained. It is an optical information recording carrier with excellent moisture resistance.

１−１−九　・ 以下、本発明の一実施例を図面によって説明する。1-1-9・ An embodiment of the present invention will be described below with reference to the drawings.

第４図は、本発明の光ディスクの断面を示している。第
１記録層１１は水溶性シアニン色素からなるもので、第
２記録層１２は非水溶性シアニン色素からなるものであ
る。これら２つのシアニン色素を予め用意する。第１記
録層を形成すべき水溶性シアニン色素としてはインドシ
アニングリーン°（ＭＥＲＣＫ　Ｎｏ　４８３９　９ｔ
ｈ　Ｅｄ　、）を用いると良好な結果を得られることが
確認された。インドシアニングリーンはそれ自体が記録
材料の機能を有しかつケトン系溶剤に不溶である。FIG. 4 shows a cross section of the optical disc of the present invention. The first recording layer 11 is made of a water-soluble cyanine dye, and the second recording layer 12 is made of a water-insoluble cyanine dye. These two cyanine dyes are prepared in advance. The water-soluble cyanine dye to form the first recording layer is indocyanine green° (MERCK No. 4839 9t).
It was confirmed that good results could be obtained using h Ed , ). Indocyanine green itself has the function of a recording material and is insoluble in ketone solvents.

本実施例では常温でメタノール中にインドシアニン２〜
５＃Ｏ／ｃｔで溶解して使用する。第２記録層として形
成すべき非水溶性シアニン色素としては従来からの例え
ば特開昭５８−１１４９８９、５− 特開昭５８−１１２７９に開示される非水溶性シアニン
色素をシクロヘキサンに溶解して使用する。In this example, indocyanine 2 ~
Use by dissolving at 5#O/ct. As the water-insoluble cyanine dye to be formed as the second recording layer, conventional water-insoluble cyanine dyes disclosed in JP-A-58-114989, 5-JP-A-58-11279 are used by dissolving them in cyclohexane. do.

溶剤としては例えば３ペンタン、シア１？トンアルコー
ルを使用しても良い。As a solvent, for example, 3 pentane, 1 shea? Tons of alcohol may also be used.

第５図に示す製造工程によって第４図の如ぎ本発明の光
ディスクが製造される。ガイドラック付ＰＭＭＡサブス
トレート１を用意してクリーニング工程においてその表
面の汚れを落す。その後、第１スピンコートテイング工
程にて予め用意されたインドシアニングリーンのメタノ
ール溶液を２５０　ｒｐｍで回転中のサブストレート１
の表面に滴下し、回転数を１０００　ｒｐｎ＋に上げ余
剰溶液分を振り飛ばし均一なる被膜を行いかつメタノー
ルを充分に揮発させ第１記録層を形成せしめる。引き続
き回転数を２５０　ｒｐｍに下げ第２スピンコーテイン
グ工程として非水溶性シアニン色素のシフ日ヘキサン溶
液を第１記録層上に滴下し、回転数を４００〜１０００
ｒｌ）Ｉｌｌに上げ余剰溶液分を撮り飛ばし第２配録層
になるべき均一なる薄膜を得る。The optical disc of the present invention as shown in FIG. 4 is manufactured by the manufacturing process shown in FIG. A PMMA substrate 1 with a guide rack is prepared and dirt on its surface is removed in a cleaning process. After that, in the first spin coating process, a methanol solution of indocyanine green prepared in advance was applied to the substrate 1 which was rotating at 250 rpm.
, and the rotational speed was increased to 1000 rpm+ to shake off excess solution to form a uniform coating and sufficiently volatilize the methanol to form the first recording layer. Subsequently, the rotation speed was lowered to 250 rpm, and as a second spin coating step, Schiff's hexane solution of water-insoluble cyanine dye was dropped onto the first recording layer, and the rotation speed was increased to 400 to 1000 rpm.
rl) Ill and remove the excess solution to obtain a uniform thin film that will become the second recording layer.

その後ベーキング工程にて乾燥せしめ第１及び第６− ２記録層の積層を完成する。次に検査工程を経た後パッ
ケージエ稈にてスペーサ６及び保護板４によって記録層
を保護し光ディスクを得る。Thereafter, it is dried in a baking process to complete the lamination of the first and 6-2nd recording layers. After passing through an inspection process, the recording layer is protected by a spacer 6 and a protection plate 4 at the package end to obtain an optical disc.

なお、インドシアニングリーン等の水溶性シアニン色素
によってＰＭＭＡのサブストレート１の表面をシクロヘ
キサンから保護することにより、非水溶性シアニン色素
の溶液はＰＭＭＡのサブストレート１の表面に悪影響を
及ぼずことなく第２記録層を形成でき、インドシアラン
グリーンの記録層をも保護することが出来るのである。Note that by protecting the surface of the PMMA substrate 1 from cyclohexane with a water-soluble cyanine dye such as indocyanine green, the solution of the water-insoluble cyanine dye can be used without adversely affecting the surface of the PMMA substrate 1. 2 recording layers can be formed, and the indosialan green recording layer can also be protected.

また、耐湿性を前轍して第１記録層と第２記録層の厚さ
をスピンコーティング工程にて適宜に調節すべきである
が、非水溶性シアニン色素の第２記録層を厚くすること
が好ましい。In addition, the thickness of the first recording layer and the second recording layer should be adjusted appropriately in the spin coating process in consideration of moisture resistance. is preferred.

更に、本実施例においてＰＭＭＡのサブストレートを使
用しているが、ガラス、アクリル樹脂、ビニル樹脂、ポ
リエーテル樹脂、エポキシ樹脂、ポリカーボネート樹脂
、ポリブチラール樹脂、セルロースアセテートブチレー
ト樹脂、ニトロセルロース樹脂などから選ばれる材料に
よって成形されるサブストレートを使用しても良い。　
。Furthermore, although a PMMA substrate is used in this example, other materials such as glass, acrylic resin, vinyl resin, polyether resin, epoxy resin, polycarbonate resin, polybutyral resin, cellulose acetate butyrate resin, nitrocellulose resin, etc. Substrates molded from the material of choice may also be used.
.

効　果 本発明によれば、ケトン系溶剤等の有機溶剤に弱いＰＭ
ＭＡ等のサブストレートの表面を水溶性シアニン色素の
第１記録層によって保護しつつ第１記録層を非水溶性シ
アニン色素の第２記録層を第１記録層上に積層させるこ
とによって耐湿性に優れかつ長期に亘って安定した記録
層が得られる。Effects According to the present invention, PM, which is sensitive to organic solvents such as ketone solvents,
While protecting the surface of a substrate such as MA with a first recording layer made of a water-soluble cyanine dye, the first recording layer is made moisture resistant by laminating a second recording layer made of a water-insoluble cyanine dye on the first recording layer. An excellent and long-term stable recording layer can be obtained.

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

第１図は従、来の光ディスクの部分断面拡大図であり、
第２図は従来の両面光ディスクの部分断面拡大図であり
、第３図は従来の光ディスクの製造工程を示す概略図で
あり、第４図は本発明による光ディスクの部分断面拡大
図であり、第５図は本発明による光ディスクの製造工程
を示す概略図である。 主要部分の符号の説明 １・・・・・・ガイドラック付 ＰＭＭＡサブストレート ２・・・シアニン色素記録層 ３・・・・・・間隙 ４・・・・・・ＰＭＭＡ保護板 ６・・・・・・スペーサ １１・・・・・・第１記録層 １２・・・・・・第２記録層 出願人　パイオニア株式会社 代理人　弁理士　藤村元彦 ９− ＼　０４ −　婦 ＃５　口 手続ネ…正書（方式） １、事件の表示 昭和５９年特許願第００５３５１号 ２、発明の名称 光学式情報記録担体 ３、補正をする者 事件との関係　特許出願人 住　所　東京都目黒区目黒１丁目４番１号名　称　（５
０１）　パイオニア株式会社４、代理人　〒１０４ 住　所　東京都中央区銀座３丁目１０番９号６、補正の
対象　図面の浄書　（内容に変更なし）７、補正の内容
　別紙添付のとおりFIG. 1 is an enlarged partial cross-sectional view of a conventional optical disc.
FIG. 2 is an enlarged partial sectional view of a conventional double-sided optical disc, FIG. 3 is a schematic diagram showing the manufacturing process of a conventional optical disc, and FIG. 4 is an enlarged partial sectional view of an optical disc according to the present invention. FIG. 5 is a schematic diagram showing the manufacturing process of an optical disc according to the present invention. Explanation of symbols of main parts 1... PMMA substrate with guide rack 2... Cyanine dye recording layer 3... Gap 4... PMMA protective plate 6... ...Spacer 11...First recording layer 12...Second recording layer Applicant Pioneer Co., Ltd. agent Patent attorney Motohiko Fujimura9-\04-Female #5 Oral procedure...Authentic document (Method) 1. Indication of the case Patent Application No. 005351 filed in 1982 2. Name of the invention Optical information recording carrier 3. Person making the amendment Relationship to the case Patent applicant address 1-4 Meguro, Meguro-ku, Tokyo No. 1 name (5
01) Pioneer Co., Ltd. 4, Agent 104 Address: 3-10-9-6, Ginza, Chuo-ku, Tokyo Subject of amendment Engraving of drawings (no change in content) 7. Contents of amendment As attached

Claims (1)

【特許請求の範囲】[Claims] アクリル酸樹脂からなる基盤上に水溶性のシアニン色素
からなる第１記録層を形成し該第１記録層の上に非水溶
性のシアニン色素からなる第２記録層を積層させてなる
ことを特徴とする光学式情報記録担体。A first recording layer made of a water-soluble cyanine dye is formed on a substrate made of acrylic acid resin, and a second recording layer made of a water-insoluble cyanine dye is laminated on the first recording layer. Optical information recording carrier.
JP59005351A 1984-01-11 1984-01-14 Optical information recording carrier Granted JPS60150244A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP59005351A JPS60150244A (en) 1984-01-14 1984-01-14 Optical information recording carrier
US06/690,200 US4639745A (en) 1984-01-11 1985-01-10 Optical recording medium
DE19853500819 DE3500819A1 (en) 1984-01-11 1985-01-11 OPTICAL INFORMATION RECORDING MEDIUM AND METHOD FOR PRODUCING THE SAME
GB08500697A GB2152686B (en) 1984-01-11 1985-01-11 Optical information recording medium

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP59005351A JPS60150244A (en) 1984-01-14 1984-01-14 Optical information recording carrier

Publications (2)

Publication Number Publication Date
JPS60150244A true JPS60150244A (en) 1985-08-07
JPH0447905B2 JPH0447905B2 (en) 1992-08-05

Family

ID=11608770

Family Applications (1)

Application Number Title Priority Date Filing Date
JP59005351A Granted JPS60150244A (en) 1984-01-11 1984-01-14 Optical information recording carrier

Country Status (1)

Country Link
JP (1) JPS60150244A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63153192A (en) * 1986-08-11 1988-06-25 Sumitomo Chem Co Ltd Optical information recording medium
KR100763953B1 (en) 2006-05-17 2007-10-05 인하대학교 산학협력단 Colored electornic ink nanoparticles for electronic displays and preparation thereof

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63153192A (en) * 1986-08-11 1988-06-25 Sumitomo Chem Co Ltd Optical information recording medium
KR100763953B1 (en) 2006-05-17 2007-10-05 인하대학교 산학협력단 Colored electornic ink nanoparticles for electronic displays and preparation thereof

Also Published As

Publication number Publication date
JPH0447905B2 (en) 1992-08-05

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