JPS58224447A - Light information recording medium - Google Patents
Light information recording mediumInfo
- Publication number
- JPS58224447A JPS58224447A JP57107542A JP10754282A JPS58224447A JP S58224447 A JPS58224447 A JP S58224447A JP 57107542 A JP57107542 A JP 57107542A JP 10754282 A JP10754282 A JP 10754282A JP S58224447 A JPS58224447 A JP S58224447A
- Authority
- JP
- Japan
- Prior art keywords
- recording medium
- layer
- information recording
- light
- carbon
- 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
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
- G11B7/251—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 dispersed in an organic matrix
Landscapes
- Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Dispersion Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Mathematical Physics (AREA)
- Thermal Transfer Or Thermal Recording In General (AREA)
- Optical Record Carriers And Manufacture Thereof (AREA)
Abstract
Description
【発明の詳細な説明】 本発明は新規な光情報記録媒体に関する。[Detailed description of the invention] The present invention relates to a novel optical information recording medium.
従来、レーザ書込みのための多くの光記録媒体が知らn
ており、その代表的なものとしてはTθ、Bj−などの
低融点金属薄膜を用いるもの、色素薄膜と金属薄膜の積
層型、TθOなどの薄膜の状態変化型、および銀塩フィ
ルムを用いるもの(いわゆるドレツクスラータイブ)な
どがある。Conventionally, many optical recording media for laser writing are unknown.
Typical examples include those using low melting point metal thin films such as Tθ and Bj-, laminated types of dye thin films and metal thin films, state change types of thin films such as TθO, and those using silver salt films ( There are so-called Drechsler types.
また、光記録媒体の材料として必要な特性は光を反射す
ることと光音吸収し、光を吸収した部分で状態変化また
は形状全変化させその光反射特性を光の照射前後で変化
させることであるが、従来のものはSβ、保存性および
記録感度の点でい1だ十分ではない。In addition, the characteristics necessary for the material of an optical recording medium are to reflect light and absorb optical sound, and to change the state or complete shape of the part that absorbs light, and to change its light reflection characteristics before and after irradiation with light. However, the conventional ones are not sufficient in terms of Sβ, storage stability, and recording sensitivity.
また、半導体レーザを光記録に用いることは、光記録用
ヘッドおよび光ピツクアップの小型化に有用であるか、
その波長域がせいぜい790nm近傍であり、そ扛以上
可視領域に中心波長があるものは現在まで開発さnてい
ない。従来、光吸収層として用いられる色素や顔料は可
視領域において、光吸収を示すものがほとんどで半導体
レーザの波長領域で高い吸収を示すものは希有である。Also, is the use of semiconductor lasers for optical recording useful for downsizing optical recording heads and optical pickups?
The wavelength range is at most around 790 nm, and to date no material with a center wavelength in the visible range has been developed. Conventionally, most of the dyes and pigments used as light absorption layers exhibit light absorption in the visible region, and it is rare that they exhibit high absorption in the wavelength region of semiconductor lasers.
本発明は上記問題に鑑みてなさfLだものであって、光
吸収層として半導体レーザの波長領域で十分吸収を有す
るカーボン全樹脂中に分散したものを用いることにより
感度、O/N %保存性とも十分使用に耐える光情報記
録媒体全提供することを目的としている。The present invention was developed in view of the above problems, and by using a carbon material dispersed in a resin that has sufficient absorption in the wavelength region of a semiconductor laser as a light absorption layer, sensitivity, O/N% storage stability, etc. The aim is to provide all types of optical information recording media that are fully usable.
本発明の光情報記録媒体は基本的には基板、反射層およ
び光吸収ノーからなるものであるが反射層を省略するこ
ともできる。その他目的に応じて保護層および下引層な
どを用いてもよい。The optical information recording medium of the present invention basically consists of a substrate, a reflective layer, and a light absorption layer, but the reflective layer can be omitted. Other protective layers, subbing layers, etc. may be used depending on the purpose.
本発明における光吸収層はカーボン分散体で構成さtて
いることが特徴であり、特にカーボ/を樹脂に分散させ
たものが好ましい。カーポンドしては木炭粉、グラファ
イト、石炭粉、コークス粉などが用いら扛るが、粒径の
小さいカーボンブラックが特に好ましい。さらに、カー
ボンは粒径の小さいもの、好ましくは半均粒径が200
0λ以下のものがよい。カーボンブラックの具体例とし
ては三菱カーボンブラック#600(半均粒径14mμ
)および#40(平均粒径20 mμ)、コロンビャカ
ーボンロイヤルスベクトラ(平均粒径10mμ)および
ネオスペクトラAG(平均粒径13mμ)およびキャボ
ットブラックパールズ1300(平均粒径13mμ)を
あげることができる。カーボンを分散する樹脂としては
、例えばポリビニルアルコール、ゼラチン、酢酸セルロ
ース、ブチラール樹脂、アクリル系樹脂、塩化ビニル樹
脂、酢酸ビニル樹脂、塩化ビニル−酢酸ビニル共重合体
樹脂、ボリスチレ/、ポリウレタ7などkhげることが
できる。樹脂に対する溶媒としては水、アルコール類、
セロソルブ類、ケトン類、ベンゼン、トルエンなどを用
いることができる。この他に分散剤として界面活性剤、
消泡剤例えばシリコーンオイルおよび平滑剤例えばシリ
コーンオイルなどを用いてもよい。カーボンの分散はボ
ールミル1アトライター、ホモゾナイザー、サンドミル
、超音波分散、ロールミル、ペブルミルなどによって行
うことができる。The light absorption layer in the present invention is characterized by being composed of a carbon dispersion, and it is particularly preferable to use a carbon dispersion in a resin. Charcoal powder, graphite, coal powder, coke powder, etc. can be used as the carbon powder, but carbon black with a small particle size is particularly preferred. Furthermore, the carbon has a small particle size, preferably a semi-average particle size of 200
A value of 0λ or less is preferable. A specific example of carbon black is Mitsubishi Carbon Black #600 (half-average particle size 14 mμ).
) and #40 (average particle size 20 mμ), Columbia Carbon Royals Vectra (average particle size 10 mμ) and Neo Spectra AG (average particle size 13 mμ) and Cabot Black Pearls 1300 (average particle size 13 mμ). . Examples of resins for dispersing carbon include polyvinyl alcohol, gelatin, cellulose acetate, butyral resin, acrylic resin, vinyl chloride resin, vinyl acetate resin, vinyl chloride-vinyl acetate copolymer resin, Boristyrene, polyurethane 7, etc. can be done. Solvents for the resin include water, alcohols,
Cellosolves, ketones, benzene, toluene, etc. can be used. In addition, surfactants are used as dispersants,
Defoamers such as silicone oil and leveling agents such as silicone oil may also be used. Carbon dispersion can be carried out using a ball mill 1 attritor, homozonizer, sand mill, ultrasonic dispersion, roll mill, pebble mill, or the like.
本発明における基板としては透明幕板金用いることか好
ましく、その例としてガラス、アクリル樹脂、ポリカー
ボネート、塩化ビニル、酢酸ビニル、メタクリル樹脂、
ポリプロピレン、ポリエステル、ニトロセルロース、ポ
リエチレン、ポリアミド、ボリイずド、エポキシ樹脂な
どをあげることができる。透明であることが必要でない
場合はアルミニウム板、銅板、鉄板などを用いてもよい
。また、基板の欠陥やキズをうめるために下引層を設け
ることが好ましく、その材料としてはブチラール樹脂、
ニトロセルロース、ポリスチレン、スチレンブタジェン
共重合体、フェノール樹脂、アクリル樹脂、エポキシ樹
脂などが用いら扛る。As the substrate in the present invention, it is preferable to use a transparent sheet metal, examples of which include glass, acrylic resin, polycarbonate, vinyl chloride, vinyl acetate, methacrylic resin,
Examples include polypropylene, polyester, nitrocellulose, polyethylene, polyamide, bolide, and epoxy resin. If transparency is not required, an aluminum plate, copper plate, iron plate, etc. may be used. In addition, it is preferable to provide an undercoat layer to fill in defects and scratches on the substrate, and the material for this is butyral resin,
Nitrocellulose, polystyrene, styrene-butadiene copolymer, phenolic resin, acrylic resin, epoxy resin, etc. are used.
本発明における反射I−としては、金属微粒子層、低融
点金属薄膜、色素薄膜などを用いることができる。そ扛
らの例全以下に示す◎(1)反射層が金部微粒子層であ
る場合5−
反射層は基板上に金属の微粒子(望ましくは粒径zoo
oi以下のもの)の単層あるいは積層あるいは金属微粒
子全バインダー中に分散したものが用いらする。形成法
としては無電解メッキや無電解メッキ類似の方法が用い
らnる。金属コロイドの形成などによってもよい。金属
微粒子層として用いらする金属としては金、銀、銅、ニ
ッケル、鉄、コバルト、亜鉛、鉛、錫、インジウムある
いはこtらの合金例えばニッケルコバルトなどがあげら
扛る。金属コロイドとしても同様のものが用いらnる。As the reflection I- in the present invention, a metal fine particle layer, a low melting point metal thin film, a dye thin film, etc. can be used. All examples of these are shown below.
A single layer or a laminated layer of oi or less metal particles, or one in which fine metal particles are dispersed throughout the binder, is used. As a forming method, electroless plating or a method similar to electroless plating can be used. The formation of a metal colloid may also be used. Examples of metals used as the metal fine particle layer include gold, silver, copper, nickel, iron, cobalt, zinc, lead, tin, indium, and alloys thereof such as nickel-cobalt. Similar metal colloids can also be used.
(2)反射層が低融点金属である場合 低融点金属は蒸着などによって形成さ扛る。(2) When the reflective layer is a low melting point metal Low melting point metals are formed by vapor deposition or the like.
低融点金属としては、銀、テルル、鉛、錫、セレン、ビ
スマスインジウム、ケルマニウムなどあるいはこ扛らの
合金を用いることができる。As the low melting point metal, silver, tellurium, lead, tin, selenium, bismuth indium, kermanium, or an alloy thereof can be used.
(3) 反射層がブロンズ光沢(メタクリック反射)
6−
を示す有機材料の場合
シアニン色素、トリフェニルメタン、キサンテア 糸色
i 、スクオレニウム、フタロシアニンなどの色素ある
いは顔料はある特定の波長で特に高い反射率を示す。こ
nを薄膜として用いると反射層となる。形成法は蒸着−
?湿式のコーティングによる。(3) Reflective layer has bronze luster (metaclic reflection)
In the case of organic materials exhibiting 6-, dyes or pigments such as cyanine dyes, triphenylmethane, xanthea, squarenium, and phthalocyanine exhibit particularly high reflectance at certain wavelengths. When this n film is used as a thin film, it becomes a reflective layer. The formation method is vapor deposition.
? By wet coating.
次に、図を参照して本発明の光情報記録媒体の構成を説
明する。Next, the configuration of the optical information recording medium of the present invention will be explained with reference to the drawings.
第1図は透明基板1にカーボン分散1ftm 2を設け
たもので光吸収はするが光反射がほとんどないので透過
型の光記録に用いらnる。第2図は透明基板1に反射層
3全形成しさらにその上にカーボン分散層2を設けたも
のであり反射型の光記録に用いらnる。この場合、反射
層は十分うすくし7てカーボン分散層にまで光が届き光
吸収によって熱が発生し反射層が変化するがまたはカー
ボン分散層の変化によって反射率に変化を与えるように
しなけ扛ばならない。記録読み出しは基板側から行うの
がよいが基板と反対側からも記録読み出しは可能である
。第3図は基板1(透明でなくてもよい)にカーボン分
散層2を設けさらに反射層3を設けたものである。FIG. 1 shows a transparent substrate 1 with 1 ftm 2 of carbon dispersed therein, which absorbs light but hardly reflects light, so it is used for transmission type optical recording. FIG. 2 shows a structure in which a reflective layer 3 is entirely formed on a transparent substrate 1 and a carbon dispersion layer 2 is further provided thereon, and is used for reflective optical recording. In this case, the reflective layer must be sufficiently thin 7 so that the light reaches the carbon-dispersed layer and heat is generated due to light absorption, causing changes in the reflective layer, or changes in the carbon-dispersed layer can change the reflectance. No. It is preferable to perform recording and reading from the substrate side, but recording and reading can also be performed from the opposite side to the substrate. In FIG. 3, a carbon dispersion layer 2 is provided on a substrate 1 (which may not be transparent), and a reflective layer 3 is further provided.
反射層に必要な条件は第2図のものと同様である。記録
読み出しは基板と反対側から行うのがよいが基板が透明
な場合は基板側からも可能である。The requirements for the reflective layer are similar to those in FIG. Recording and reading is preferably performed from the side opposite to the substrate, but if the substrate is transparent, it is also possible to read from the substrate side.
以下実施例によって本発明全具体的に説明するが、こn
に限定さnるものではない。The present invention will be explained in detail below with reference to Examples.
It is not limited to n.
実施例 1
ガラス基板上に以下の構造式のシアニン色素NK2O1
4(日本感光色素)
全ジクロルエタンに溶けるだけ浴かして2000rpm
でスピンコードした。さらに、その上に以下の処方から
なるものをボールミルで分散して調製したカーボン分散
液に20[]Orpmでスピンコードした。Example 1 Cyanine dye NK2O1 having the following structural formula was deposited on a glass substrate.
4 (Japanese Photosensor) Soak in dichloroethane until dissolved, then 2000 rpm.
I made a spin code. Further, a carbon dispersion prepared by dispersing the following formulation in a ball mill was spin-coded at 20[] Orpm.
カーボンブラシクリ−ガル600工(OABOT)
40重量部水
58 〃分散剤 2.
0〃苛性ソーダ 0.03//ポリ
ビニルアルコール 10 〃このようにして
800nmで反射率60%の記録部材を作成した。半導
体レーザ(照射面)々ワーフmWビーム径1.6μm)
で省き込み(o、 5 MHz sデユティ比1、線速
2m / sθ0)そして1mWの 9−
読み出し光で20 dBのS/N’ii得た。Carbon brush Cregal 600 pieces (OABOT)
40 parts by weight water
58 〃Dispersant 2.
0 Caustic soda 0.03 // Polyvinyl alcohol 10 In this way, a recording member having a reflectance of 60% at 800 nm was produced. Semiconductor laser (irradiation surface) wharf mW beam diameter 1.6 μm)
(o, 5 MHz, duty ratio 1, linear velocity 2 m/s θ0), and an S/N'ii of 20 dB was obtained with 1 mW of 9-readout light.
実施例 2
アクリル基板にTe 128&を17cmの距離から抵
抗加熱により蒸着した。その上に実施例1で調製したカ
ーボンブラック分F’lF!L”k 2000rpmで
スピンコードした。半導体レーザ(照射面パワー4mW
、ビーム径1−54 μms 0.5 MHzデユティ
比1、線速2m/θec )で書き込みそして1mWの
読み出し光で30dBのS/Nを得た。Example 2 Te 128& was deposited on an acrylic substrate from a distance of 17 cm by resistance heating. On top of that, the carbon black prepared in Example 1 F'lF! Spin code was performed at L”k 2000 rpm. Semiconductor laser (irradiation surface power 4 mW
, a beam diameter of 1-54 μms, a 0.5 MHz duty ratio of 1, and a linear velocity of 2 m/θec), and an S/N of 30 dB was obtained with a read light of 1 mW.
実施例 6
PVA 9 %水溶液 25vAgN05
30 tホルムアゼド
4〇−
28%アンモニア水 40mJブドウ糖50%
水溶#: 32rrz上記組成の浴gを透明ア
クリル板上にスピンコードし60℃で5分間加熱して銀
粒子層を形10−
成した。さらに、その上に、
EMP Black FX 0103−T 2
5 fPVA 2%水溶液 55?からなる
カーボン分散液をスピンコードし乾燥した。1(eNe
レーザ(smwbビーム径16μ、0.5h4Hz、デ
ユティ比1、線速2 m / sθC)で書き込みそし
て0.5 mWの読み出し光で30dBの8/′Nを得
た0同様にして作成した記録部材に半導体レーザにより
同一条件で書き込み読み出しを行い27 dBのS/N
を得た。Example 6 PVA 9% aqueous solution 25vAgN05
30 t-formazed
40- 28% ammonia water 40mJ glucose 50%
Water solution #: 32rrz Bath g having the above composition was spin-coded onto a transparent acrylic plate and heated at 60°C for 5 minutes to form a silver particle layer. Furthermore, on top of that, EMP Black FX 0103-T 2
5 fPVA 2% aqueous solution 55? A carbon dispersion consisting of the above was spin-coded and dried. 1(eNe
A recording member prepared in the same manner as above was written with a laser (smwb beam diameter 16μ, 0.5h4Hz, duty ratio 1, linear velocity 2m/sθC) and obtained 8/'N of 30dB with 0.5mW readout light. Write and read data using a semiconductor laser under the same conditions, resulting in an S/N of 27 dB.
I got it.
第1図ないし第5図はそnぞ扛本発明の光情報記録媒体
の構成を概念的に示す図である。
1・・・基板、2・・・カーボン分散層、6・・・反射
層。
特許出願人 株式会社 リ コ −11−
帛1図
壓2図1 to 5 are diagrams conceptually showing the structure of the optical information recording medium of the present invention. DESCRIPTION OF SYMBOLS 1...Substrate, 2...Carbon dispersion layer, 6...Reflection layer. Patent applicant Rico Co., Ltd. -11- Figure 1 Figure 2
Claims (1)
する、元情報記録媒体。An original information recording medium characterized by using a carbon dispersion as a light absorption material.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP57107542A JPS58224447A (en) | 1982-06-24 | 1982-06-24 | Light information recording medium |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP57107542A JPS58224447A (en) | 1982-06-24 | 1982-06-24 | Light information recording medium |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS58224447A true JPS58224447A (en) | 1983-12-26 |
Family
ID=14461823
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP57107542A Pending JPS58224447A (en) | 1982-06-24 | 1982-06-24 | Light information recording medium |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS58224447A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6161895A (en) * | 1984-09-04 | 1986-03-29 | Daicel Chem Ind Ltd | Laser recording film |
JPS63216790A (en) * | 1987-03-04 | 1988-09-09 | Mitsubishi Electric Corp | Laser marking method |
US20120241002A1 (en) * | 2011-03-23 | 2012-09-27 | Southern Illinois University Carbondale | Coal solar cells |
US8288681B2 (en) * | 2005-09-08 | 2012-10-16 | Sony Corporation | Laser processing apparatus and laser processing method as well as debris extraction mechanism and debris extraction method |
-
1982
- 1982-06-24 JP JP57107542A patent/JPS58224447A/en active Pending
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6161895A (en) * | 1984-09-04 | 1986-03-29 | Daicel Chem Ind Ltd | Laser recording film |
JPS63216790A (en) * | 1987-03-04 | 1988-09-09 | Mitsubishi Electric Corp | Laser marking method |
US8288681B2 (en) * | 2005-09-08 | 2012-10-16 | Sony Corporation | Laser processing apparatus and laser processing method as well as debris extraction mechanism and debris extraction method |
US20120241002A1 (en) * | 2011-03-23 | 2012-09-27 | Southern Illinois University Carbondale | Coal solar cells |
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