JPS595438A - Optical recording system - Google Patents
Optical recording systemInfo
- Publication number
- JPS595438A JPS595438A JP57115213A JP11521382A JPS595438A JP S595438 A JPS595438 A JP S595438A JP 57115213 A JP57115213 A JP 57115213A JP 11521382 A JP11521382 A JP 11521382A JP S595438 A JPS595438 A JP S595438A
- Authority
- JP
- Japan
- Prior art keywords
- recording
- layer
- optical
- foams
- recording layer
- 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
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
- G11B7/004—Recording, reproducing or erasing methods; Read, write or erase circuits therefor
- G11B7/0045—Recording
- G11B7/00452—Recording involving bubble or bump forming
-
- 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
-
- 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
- G11B7/242—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
- G11B2007/24318—Non-metallic elements
- G11B2007/2432—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
- G11B7/2533—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)
- Optical Record Carriers And Manufacture Thereof (AREA)
- Optical Recording Or Reproduction (AREA)
Abstract
Description
【発明の詳細な説明】 本発明は光記録方式に関する。[Detailed description of the invention] The present invention relates to an optical recording system.
従来、光ディスク等では、基板の上の記録層に収束した
レーザービームを照射し、記録層中に吸収された光エネ
ルギーから変換された熱エネルギーによって、記録層の
光学定数を変化させて情報を書き込む。情報の読み出し
は低パワーのレーザービームを照射して、反射光量等の
変化により行なう。このような光記録装置を小型化会低
価格化するた起＞（こは省き込み用レーザーとして半導
体レーザーを使用することが強く望まれている。したが
りて、出力（−〕小さい半導体レーザーを用いても充分
高速で書き込める高感にンに記録媒体及び記録方式な必
枳どするか、未だ望′ましい媒体及び方式は開発されて
いない。媒体感度は媒体を支持する基板の熱特性に大き
く依存するので、できる／こり熱伝導度の小さな基板が
使用されでいる。それでも基板に流出する熱ｆｉｋは大
きく、このことが媒体感度を低めている主な原因となっ
ている。Conventionally, in optical discs, information is written by irradiating the recording layer on the substrate with a focused laser beam and changing the optical constants of the recording layer using thermal energy converted from the optical energy absorbed in the recording layer. . Information is read by irradiating a low-power laser beam and changing the amount of reflected light. In order to miniaturize and lower the cost of such optical recording devices, it is strongly desired to use a semiconductor laser as a recording laser. However, a desirable recording medium and recording method have not yet been developed to provide a high-sensitivity recording medium and recording method that can be written at a sufficiently high speed.Media sensitivity depends on the thermal characteristics of the substrate that supports the medium. Therefore, a substrate with low thermal conductivity is used.However, the heat fik flowing to the substrate is large, and this is the main reason for reducing the sensitivity of the medium.
本発明の目的は、高感度の光記録を可能とする光記録方
式を提供することにある。An object of the present invention is to provide an optical recording system that enables highly sensitive optical recording.
本発明は収束したレーーリ゛−ビームを照射することに
よる記録層の光学定数変化によシ光記録を行なう光記録
方式において、基板の上に積層された層の中の第一の層
と、該第−の層の直上にありかつ該記録層の下にある第
二の層の間に気泡があり、該気泡の上の部分の該記録層
の光学定数を変化させて記録を行なうことを特徴とする
ものである。The present invention relates to an optical recording system that performs optical recording by changing the optical constants of a recording layer by irradiating a convergent Rayleigh beam. A bubble is present between a second layer directly above the first layer and below the recording layer, and recording is performed by changing the optical constants of the recording layer in the area above the bubble. That is.
以下、本発明の光記録方式について実施例を用いて説明
する。第１図は本発明の一実施例における光記録媒体の
断面図である。まず、ポリメチルメタクリレート（ＰＭ
ＭＡ）基板１の上に、反射層２としてアルミニウム（Ａ
ｌ）膜を３０几ｍ、透過層３として高分子膜を２００ｎ
ｍ、支持層４としてチタン（ＴＩ ＞膜をｌ Ｑ １−
Ｌｍ順次積層し、しかる後、波長５１４ ｎｍのアルゴ
ンガスレーザービーム（図示せず）を収束照射し、支持
層４を透過層３よシ剥離させ、最大ギャップ長が約２０
０−Ａｍの気泡５を形成した。次に、支持層４の上全面
に記録層６としてテルル低酸化物（Ｔｅａ、、、）膜を
３５ｘｍ被着した。このような記録媒体の気泡５の上の
部分に波長８３０ｙ＜ｍの半導体レーザービーム７を収
束照射して第２図のように黒化（光学定数が変化）した
部分２０を形成した。このときに必要であったレーザー
パワーは、ＰＭＭＡ基板の上にｌＱｈｍ厚のＴｉ膜、３
５′ｒＸｍ厚の’ｒｅｏ□、、膜を順次積層した記録媒
体に記録するに必要であったレーザーパワーの半分以下
であった。このように記録が高感度化された主な原因は
、記録層の支持層の下が気泡であることにより、記録層
及び支持層からの熱の流出が阻止されたためである。The optical recording system of the present invention will be explained below using examples. FIG. 1 is a sectional view of an optical recording medium in one embodiment of the present invention. First, polymethyl methacrylate (PM
MA) Aluminum (A
l) 30 m of membrane, 200 n of polymer membrane as permeable layer 3
m, titanium (TI > film as support layer 4 l Q 1-
After that, the support layer 4 is peeled off from the transparent layer 3 by convergent irradiation with an argon gas laser beam (not shown) having a wavelength of 514 nm, and the maximum gap length is approximately 20 nm.
A bubble 5 of 0-Am was formed. Next, a 35x thick tellurium low oxide (Tea, . A semiconductor laser beam 7 having a wavelength of 830y<m was convergently irradiated onto the portion above the bubble 5 of such a recording medium to form a blackened portion 20 (with a change in optical constant) as shown in FIG. The laser power required at this time was as follows:
This was less than half the laser power required to record on a recording medium in which 5'rXm thick 'reo□' films were sequentially laminated. The main reason for this high recording sensitivity is that the presence of air bubbles under the support layer of the recording layer prevents heat from flowing out from the recording layer and the support layer.
なお、本実施例では記録層として’ｒｅｏ０．□膜を用
、キ
いたが、金属フタロシアンの非晶質から結晶質への変化
を用いてもよいことはいうまでもない。また、気泡形成
のだめの層構造としてここでは、Ｔｉ膜／高分子膜／Ａ
Ｊ膜を用いたが、他の気泡形成層構造を用いてもよいこ
ともいうまでもない。In this example, 'reo0. □Although a film was used, it goes without saying that changing the metal phthalocyanine from amorphous to crystalline may also be used. In addition, as a layer structure to prevent bubble formation, Ti film/polymer film/A
Although the J membrane was used, it goes without saying that other bubble-forming layer structures may be used.
以上述べたように本発明によれば、高感度の光記録を可
能とする光記録方式が得られる。As described above, according to the present invention, an optical recording system that enables highly sensitive optical recording can be obtained.
第１図は本発明の一実施例をにおける記録媒体を示す断
面図であシ、第２図はこの記録媒体に記録した後の状態
を示す断面図である。
図において、１は基板、２は反射層、３は透過層、４は
支持層、５は気泡、６は記録層、７はレーザービーム、
２０は光学定数が変化した部分を表わす。
第 １ ス
￥ ２ 侶FIG. 1 is a sectional view showing a recording medium according to an embodiment of the present invention, and FIG. 2 is a sectional view showing the state after recording is performed on this recording medium. In the figure, 1 is a substrate, 2 is a reflective layer, 3 is a transparent layer, 4 is a support layer, 5 is a bubble, 6 is a recording layer, 7 is a laser beam,
20 represents a portion where the optical constants have changed. 1st ￥ 2nd mate
Claims (1)
光学定数変化によシ光記録を行なう光記録方式において
、基板の上に積層された層の中の第一の層と、該第−の
層の直上にありかつ該記録層の下にある第二の層の間に
気泡があり、該気泡の上の部分の該記録層の光学定数を
変化させて記録を行なうことを特徴とする光記録方式。In an optical recording method that performs optical recording by changing the optical constant of a recording layer by irradiating it with a focused laser beam, a first layer of layers laminated on a substrate and a first layer of the second layer are stacked on a substrate. An optical recording method characterized in that air bubbles are present between a second layer located directly above the recording layer and below the recording layer, and recording is performed by changing the optical constants of the recording layer above the air bubbles. .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57115213A JPS595438A (en) | 1982-07-02 | 1982-07-02 | Optical recording system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57115213A JPS595438A (en) | 1982-07-02 | 1982-07-02 | Optical recording system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS595438A true JPS595438A (en) | 1984-01-12 |
| JPH0416857B2 JPH0416857B2 (en) | 1992-03-25 |
Family
ID=14657162
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP57115213A Granted JPS595438A (en) | 1982-07-02 | 1982-07-02 | Optical recording system |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS595438A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61130094A (en) * | 1984-11-29 | 1986-06-17 | Matsushita Electric Ind Co Ltd | Information recording medium and recording regeneration method |
-
1982
- 1982-07-02 JP JP57115213A patent/JPS595438A/en active Granted
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61130094A (en) * | 1984-11-29 | 1986-06-17 | Matsushita Electric Ind Co Ltd | Information recording medium and recording regeneration method |
| JPH0549472B2 (en) * | 1984-11-29 | 1993-07-26 | Matsushita Electric Ind Co Ltd |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0416857B2 (en) | 1992-03-25 |
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