JPS62196181A - 光情報記録媒体 - Google Patents

光情報記録媒体

Info

Publication number
JPS62196181A
JPS62196181A JP61013923A JP1392386A JPS62196181A JP S62196181 A JPS62196181 A JP S62196181A JP 61013923 A JP61013923 A JP 61013923A JP 1392386 A JP1392386 A JP 1392386A JP S62196181 A JPS62196181 A JP S62196181A
Authority
JP
Japan
Prior art keywords
recording
recording medium
reflectance
laser light
erasing
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
JP61013923A
Other languages
English (en)
Inventor
Shoichi Kawai
正一 川井
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.)
Nippon Columbia Co Ltd
Original Assignee
Nippon Columbia 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 Nippon Columbia Co Ltd filed Critical Nippon Columbia Co Ltd
Priority to JP61013923A priority Critical patent/JPS62196181A/ja
Publication of JPS62196181A publication Critical patent/JPS62196181A/ja
Pending legal-status Critical Current

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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
    • G11B2007/24312—Metals or metalloids group 14 elements (e.g. Si, Ge, Sn)
    • 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
    • G11B2007/24314—Metals or metalloids group 15 elements (e.g. Sb, Bi)
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material
    • G11B7/241—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material
    • G11B7/242—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of recording layers
    • G11B7/243—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of recording layers comprising inorganic materials only, e.g. ablative layers
    • G11B2007/24302—Metals or metalloids
    • G11B2007/24316—Metals or metalloids group 16 elements (i.e. chalcogenides, Se, Te)
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material
    • G11B7/241—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material
    • G11B7/252—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers
    • G11B7/257—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers of layers having properties involved in recording or reproduction, e.g. optical interference layers or sensitising layers or dielectric layers, which are protecting the recording layers
    • G11B2007/25705—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers of layers having properties involved in recording or reproduction, e.g. optical interference layers or sensitising layers or dielectric layers, which are protecting the recording layers consisting essentially of inorganic materials
    • G11B2007/25708—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers of layers having properties involved in recording or reproduction, e.g. optical interference layers or sensitising layers or dielectric layers, which are protecting the recording layers consisting essentially of inorganic materials containing group 13 elements (B, Al, Ga)
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material
    • G11B7/241—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material
    • G11B7/252—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers
    • G11B7/257—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers of layers having properties involved in recording or reproduction, e.g. optical interference layers or sensitising layers or dielectric layers, which are protecting the recording layers
    • G11B2007/25705—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers of layers having properties involved in recording or reproduction, e.g. optical interference layers or sensitising layers or dielectric layers, which are protecting the recording layers consisting essentially of inorganic materials
    • G11B2007/2571—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers of layers having properties involved in recording or reproduction, e.g. optical interference layers or sensitising layers or dielectric layers, which are protecting the recording layers consisting essentially of inorganic materials containing group 14 elements except carbon (Si, Ge, Sn, Pb)
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material
    • G11B7/241—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material
    • G11B7/252—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers
    • G11B7/257—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers of layers having properties involved in recording or reproduction, e.g. optical interference layers or sensitising layers or dielectric layers, which are protecting the recording layers
    • G11B2007/25705—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers of layers having properties involved in recording or reproduction, e.g. optical interference layers or sensitising layers or dielectric layers, which are protecting the recording layers consisting essentially of inorganic materials
    • G11B2007/25713—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers of layers having properties involved in recording or reproduction, e.g. optical interference layers or sensitising layers or dielectric layers, which are protecting the recording layers consisting essentially of inorganic materials containing nitrogen
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material
    • G11B7/241—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material
    • G11B7/252—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers
    • G11B7/257—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers of layers having properties involved in recording or reproduction, e.g. optical interference layers or sensitising layers or dielectric layers, which are protecting the recording layers
    • G11B2007/25705—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers of layers having properties involved in recording or reproduction, e.g. optical interference layers or sensitising layers or dielectric layers, which are protecting the recording layers consisting essentially of inorganic materials
    • G11B2007/25715—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers of layers having properties involved in recording or reproduction, e.g. optical interference layers or sensitising layers or dielectric layers, which are protecting the recording layers consisting essentially of inorganic materials containing oxygen
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material
    • G11B7/241—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material
    • G11B7/252—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers
    • G11B7/253—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

Landscapes

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

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。

Description

【発明の詳細な説明】 〔産業上の利用分野〕 本発明は、レーザ元の熱エネルギーによる熱相変化によ
り光学的特性を変化させて情報を記録し、又書換えも可
能な記録膜ｒ基板に被着１せ次元情報記録媒体に関す２
もので７ｂ　ｈ　。
〔従来の技術〕
従来よシ、書換え可１Ｊ＠な光情報記録媒体としては、
磁気モーメントの配向による偏光角の変化を利用丁２元
磁気記録壓と、非晶質−結晶質間の相変化によと反射率
もしくは透過率変化七利用丁ゐ相変化記録型とがあｚｏ
後者の相変化記録型の記録媒体としては、杢出拍人が特
願昭５９−１３７４５号「光情報記録媒体」として提案
したＧｅＴｅ薄膜があ〔発明が解決しようと１石問題点
〕 しかしこれは、高融点（７２５°Ｃ）でアコから可逆性
を利用することはむずかしく、情報の書き換えは困難で
ある。
〔問題点會解決丁芝ための手段〕
１３〜３３．　Ｔｅ　：　３６〜５６．　　Ｓｂ　：　
２１〜４１となる様にした。
〔作用〕
この様に本発明の記録媒体はＧｅに対丁ルＴｅの比率を
多くしてあ２ので融点が下がフ、又Ｓｂケ添化してあ石
ので、記録、消去レーザパルスの照射に対して完全に結
晶化１疋ことはないので、記録消去が容易である。
〔実施列〕
以下に不発明の詳細な説明丁２０第１図（イ）に示す様
に、ガラス基板２上にＳｂ　、　Ｇｅ　、Ｔｅ　’＜そ
れぞれ真空蒸着、スパッタリングによって被着させＧｅ
　Ｔｅ　Ｓｂ　（Ｇｅ　：　２３±１０．　　Ｔｅ：４
６±１０　、　Ｓｂ：３１±１０）からなる記録膜４を
形成させ２゜更にその上Ｋ　５ｉｎｔ、　ＡＩＮ、　　
Ｓｔ、Ｎ、等（７）　保護／ａ　ｗ　ａ　Ｍ　サセｈ。
こうして出来た記録膜の全体に加熱多えいはレーザ照射
等の消去処理ケ行うと、Ｓｂ、Ｔｅ、が出来、Ｇｅ　ｔ
ｄ遊離し反射率の高い状態になる。次に記録用の高レベ
ルの半導体レーザ元（８３０ｎｍ）ｋ第１図の様に基板
側から照射丁Ｚと、照射されたところだけにＧｅＴｅ　
、が出来てｓｂは遊離し反射率は低下して記録が行われ
石０記碌が行われｆｃ部分に消去用の中レベルの上記レ
ーザ元ヶ照射丁ふと、再び１Ｓｂ　、Ｔｅ　、が出来て
Ｇｅは遊離し反射率は高くな力消去が行わ７″Ｌる。こ
の様に書き込みパルスと消去パルスによりそれぞれ反射
率が変化して記録消去が行わ這す この様な記録消去が行わ７’ｔ、：仕組みについて考え
るに、ＧｅＴｅ、は非晶質状態でしか存在しないが、Ｇ
ｅＴｅ、の与結合エネルギーが弱い為と考えらへ石。
つまＤ、Ｍ報の記録と消去はこの様なＧｅＴｅ、と、ｓ
ｂ工Ｔｅ３に結合エネルギーの差がおることケ利用して
行われえと考えられる０ 第２図は、Ｇｏ、、Ｔｅ、、Ｓｂ、、、で膜厚が５０ｎ
ｍの記録媒体の、消去パルス幅に附子２反射率の変化音
測定したものであ造。測定は、静止状態の記録媒体に１
０　ｒｙＷ　／　μｍ’でパルス幅０．３μＳの記録ハ
ルス？照射して記録を行い、その１０　ｍｓ後に１ｍＷ
／μｍ８でパルス幅１．５μｓの再生パルスを照射して
反射光音測定する。続けて１０　ｍｓ後に４ｍＷ／μｍ
１で適当なパルス幅の消去パルスケ照射し、さらに続け
て１０　ｍｓ後に上述と同様の再生パルス？照射してｐ
）び反射光老測定丁４゜こうして記録から消去に致４　
約３０　ｍｓの一連の測定サイクルを消去パルスの４６
＋　ｋ異らせて腹数回行う。第２図はこの様にして記録
時の反射率に附子石消去時の反射率の相対値ケ各種の幅
の消去パルスに対して測定し九ものである。この結果に
よ４と、０．８μＳ程度以上で完全な消去が行われここ
とがわかる。
第３□□□はガラス基板上にＧｅ、Ｔｅ４．Ｓｂ、、よ
り成石記轍膜２被着した各１重の膜厚の情報記録媒体に
波長８３０ｎｍ　の−）１一基板側より入射させて反射
率で測定したもので１，１！線及びだ、豫はそれぞれ記
録媒体のａｓｄｅｐｏ　（成膜）及びａｎｎｅａｌ　（
熱処理）後の反射率の膜厚依存性に示す。この図から３
０〜８０ｎｍの厚さがコントラストが大きくなフ、好ま
しい膜厚でｔｆ）石ことがわか４゜従来の単層膜で干渉
を利用した元情報記録媒体では１００〜１５０ｎｍ　の
膜厚が必要であとが、上述の実施列によと元情報記録媒
体ではこの様に膜厚に薄く１石ことができ、記＠膜の熱
容量全低減させることができるため記録、消去の感度が
高くなる。
なお、本発明１情報記今媒体はレーザを保護層側から照
射しても記録、消去書き換え可能でｔＢｈ。
又再生は透過光で行ってもよい。
ガラス基板のかわりにプラスチック基板を用いる場合は
第１図（ロ）の様に丁ととよい。即ち、第１図（ロ）は
基板としてポリメチルメタクリレート基板又はポリカー
ボネート基板ケ用い、この上にｓｉｏ。
ＡＩＮ、　　ＳｔＮ等の保護層４′ケ設け、この上に第
１図（イ）と同様の君己録層３を形成し、この上に上述
の保護層４′と同様の保護層４を設けたものでろる０記
録膜の作用は第１図（イ）と同様であるから１．．５２
明全省略すえ。
〔比１咬列〕 第４図はガラス基板にＧｅ工、Ｔｅ、；。Ｓｂ、孕被端
した光情報記録媒体に、第２［菌と同様に静止状態で記
録、再生、消去、再生の測定サイクルを各種の消去パル
ス幅に対して実施して消去時間に附子芝反射率の相対値
の変化欠測定したものである。この凶からこの元情報記
録媒体は、消去時間に４０μｓ以上必要であ）、光ディ
スクとして回転基で記録消去するには、実用的ではなく
、上述の不発明の実施例のものと比べ乙と消去速度が遅
いことがわが芝。
この理由については、前述の実施例にくらべてｓｂの比
率が小さく、又Ｔｅの比率が犬き丁ぎ々為と考えら７″
Ｌと。即ちＴｅの比率の太き丁ぎえＧｅＴｅでｈ　、　
Ｇｅ　（Ｔｅ、）十四面体とα−Ｔｅ鎖とが存在し、こ
の様なＧｅＴｅの相変化は、このα−Ｔｅ鎖がバネの様
に伸び縮みして状態に変えることにより行われると考え
られえ。この様に質量の大きなＧｅＴｅ４が移動丁２為
消去時には時間がか＼る。これに対して、Ｇｅ、　Ｔｅ
、　Ｓｂ４では、ＧｅＴｅ、　孕分解して、ｓｂ、と、
Ｔｅｊとｔ結８合させる時間だけで、四面体の移動が行
わｎない為消去速度が早くなえものと考えらへイ０〔発
明の効果〕 以上のように元情報記録媒体の組成７Ｇｅ：１３〜３３
　、　　Ｔｅ：３６〜５６　、　　Ｓｂ：　２１〜４１
とすることによフ記録さ八た部分の消去レーザ照射時間
が十分短い元情報記録媒体を得２ことが出来え。
【図面の簡単な説明】
第１図（イ）及び（ロ）はそｎぞｔＮ不発明によえ記録
媒体の笑施列を示す断面図、第２図及び第３図は第１図
の記録媒体の特性を説明丁４崖図、第４図は比較例の特
性全説明丁４１腺図である。 １・・・レーザ　２・・・基板　３−０記録層４・・・
保穫層

Claims (1)

    【特許請求の範囲】
  1. 基板上に形成した薄膜に光、熱等によつて光学的特性の
    変化部分を形成して情報を記録及び書換えする光情報記
    録媒体において、上記薄膜の成分をＧｅ：１３〜３３、
    Ｔｅ：３６〜５６、Ｓｂ：２１〜４１の混合物としたこ
    とを特徴とする光情報記録媒体。
JP61013923A 1986-01-27 1986-01-27 光情報記録媒体 Pending JPS62196181A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP61013923A JPS62196181A (ja) 1986-01-27 1986-01-27 光情報記録媒体

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP61013923A JPS62196181A (ja) 1986-01-27 1986-01-27 光情報記録媒体

Publications (1)

Publication Number Publication Date
JPS62196181A true JPS62196181A (ja) 1987-08-29

Family

ID=11846700

Family Applications (1)

Application Number Title Priority Date Filing Date
JP61013923A Pending JPS62196181A (ja) 1986-01-27 1986-01-27 光情報記録媒体

Country Status (1)

Country Link
JP (1) JPS62196181A (ja)

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62209742A (ja) * 1986-03-11 1987-09-14 Matsushita Electric Ind Co Ltd 書換え可能な光学情報記録部材
WO1989004043A1 (en) * 1987-10-28 1989-05-05 Matsushita Electric Industrial Co., Ltd. Optical data recording medium
JPH0211388A (ja) * 1988-06-30 1990-01-16 Ricoh Co Ltd 昇華型熱転写記録方法
JPH02130186A (ja) * 1988-11-11 1990-05-18 Toray Ind Inc 光記録媒体
JPH02158383A (ja) * 1988-12-12 1990-06-18 Hitachi Ltd 情報の記録用薄膜
US5063097A (en) * 1988-12-16 1991-11-05 Toray Industries, Inc. Optical recording medium
JPH07266706A (ja) * 1995-03-27 1995-10-17 Matsushita Electric Ind Co Ltd 書換え可能な光学的情報記録方法
EP0897177A1 (en) * 1997-08-12 1999-02-17 Matsushita Electric Industrial Co., Ltd. Optical information recording medium, method for producing the same, and method for recording and reproducing optical information
US6268034B1 (en) 1998-08-05 2001-07-31 Matsushita Electric Industrial Co., Ltd. Optical information recording medium and method for producing the same, method for recording and reproducing information thereon and recording/reproducing apparatus
US6343062B1 (en) 1997-09-26 2002-01-29 Matsushita Electric Industrial Co., Ltd Optical disk device and optical disk for recording and reproducing high-density signals
US6388984B2 (en) 1997-08-28 2002-05-14 Matsushita Electric Industrial Co., Ltd. Optical information recording medium and its recording and reproducing method
US6821707B2 (en) 1996-03-11 2004-11-23 Matsushita Electric Industrial Co., Ltd. Optical information recording medium, producing method thereof and method of recording/erasing/reproducing information

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6034897A (ja) * 1983-08-08 1985-02-22 Nippon Telegr & Teleph Corp <Ntt> 書替可能光記録媒体

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6034897A (ja) * 1983-08-08 1985-02-22 Nippon Telegr & Teleph Corp <Ntt> 書替可能光記録媒体

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62209742A (ja) * 1986-03-11 1987-09-14 Matsushita Electric Ind Co Ltd 書換え可能な光学情報記録部材
WO1989004043A1 (en) * 1987-10-28 1989-05-05 Matsushita Electric Industrial Co., Ltd. Optical data recording medium
US5024910A (en) * 1987-10-28 1991-06-18 Matsushita Electric Industrial Co., Ltd. Optical information recording medium
JPH0211388A (ja) * 1988-06-30 1990-01-16 Ricoh Co Ltd 昇華型熱転写記録方法
JPH02130186A (ja) * 1988-11-11 1990-05-18 Toray Ind Inc 光記録媒体
JPH02158383A (ja) * 1988-12-12 1990-06-18 Hitachi Ltd 情報の記録用薄膜
US5063097A (en) * 1988-12-16 1991-11-05 Toray Industries, Inc. Optical recording medium
JPH07266706A (ja) * 1995-03-27 1995-10-17 Matsushita Electric Ind Co Ltd 書換え可能な光学的情報記録方法
US6821707B2 (en) 1996-03-11 2004-11-23 Matsushita Electric Industrial Co., Ltd. Optical information recording medium, producing method thereof and method of recording/erasing/reproducing information
US7037413B1 (en) 1996-03-11 2006-05-02 Matsushita Electric Industrial Co., Ltd. Optical information recording medium, producing method thereof and method of recording/erasing/reproducing information
EP0897177A1 (en) * 1997-08-12 1999-02-17 Matsushita Electric Industrial Co., Ltd. Optical information recording medium, method for producing the same, and method for recording and reproducing optical information
US6503690B1 (en) 1997-08-12 2003-01-07 Matsushita Electric Industrial Co., Ltd. Optical information recording medium, method for producing the same, and method for recording and reproducing optical information
US6388984B2 (en) 1997-08-28 2002-05-14 Matsushita Electric Industrial Co., Ltd. Optical information recording medium and its recording and reproducing method
US6343062B1 (en) 1997-09-26 2002-01-29 Matsushita Electric Industrial Co., Ltd Optical disk device and optical disk for recording and reproducing high-density signals
US6268034B1 (en) 1998-08-05 2001-07-31 Matsushita Electric Industrial Co., Ltd. Optical information recording medium and method for producing the same, method for recording and reproducing information thereon and recording/reproducing apparatus

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