JPS58203643A - Optical recording medium - Google Patents

Optical recording medium

Info

Publication number
JPS58203643A
JPS58203643A JP57085786A JP8578682A JPS58203643A JP S58203643 A JPS58203643 A JP S58203643A JP 57085786 A JP57085786 A JP 57085786A JP 8578682 A JP8578682 A JP 8578682A JP S58203643 A JPS58203643 A JP S58203643A
Authority
JP
Japan
Prior art keywords
recording medium
tellurium
optical recording
layer
forming 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.)
Pending
Application number
JP57085786A
Other languages
Japanese (ja)
Inventor
Yasuhiro Ishii
石井　泰弘
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.)
Sanyo Electric Co Ltd
Sanyo Denki Co Ltd
Original Assignee
Sanyo Electric Co Ltd
Sanyo Denki 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 Sanyo Electric Co Ltd, Sanyo Denki Co Ltd filed Critical Sanyo Electric Co Ltd
Priority to JP57085786A priority Critical patent/JPS58203643A/en
Publication of JPS58203643A publication Critical patent/JPS58203643A/en
Pending 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
    • G11B7/252—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
    • 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
    • G11B7/004—Recording, reproducing or erasing methods; Read, write or erase circuits therefor
    • G11B7/0045—Recording
    • G11B7/00453—Recording involving spectral or photochemical hole burning
    • 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)
  • Optical Record Carriers And Manufacture Thereof (AREA)

Abstract

PURPOSE:To prevent oxidation of a pit forming layer, and to enable a long-term storage of the signals, by forming an oxidation preventing layer on the pit forming layer with respect to the medium on which the pits are formed by irradiation of laser beams, etc. CONSTITUTION:A base 1 is made of transparent material, such as glass or acrylic resin. A 5-50nm thick tellurium metal layer serviceable as the pit forming layer is formed on the base 1. Tellurium is a metal having a m.p. as low as about 400 deg.C, and absorption characteristics absorbing light of >=700nm wavelength. Therefore, when the tellurium layer is irradiated with semiconductor laser beams having 800nm wavelengths, it absorbs the beams to generate heat, and is melted with its heat, thus the pits are formed. As the oxidation preventing film 3, it is desirable that it has a m.p. as low as possible, small heat capacity, and further, low thermal conductivity.

Description

【発明の詳細な説明】 本発明は、レーザ光等を照射することにより４８号とな
るビット（四部）が形成される＃Ｉ成とした光学記録媒
体に関するものであり、特に低エネルギーの光でビット
の形成が可能となるようにしたものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an optical recording medium of #I structure in which bits (four parts) of No. 48 are formed by irradiation with laser light, etc., and in particular with low energy light. This makes it possible to form bits.

ディスクに対して、ビデオ値Ｑ、ＰＣＭ（パルスコード
変ｍ　）　４Ｐｉづ等を、レーザ光を利用して記録し、
再生する技術は公知である。駈かるディスクをｒ＃−成
する方法には、二通りの方法がある。一つは一個の摩擦
を作成して、この摩擦から再生用のディスクをｍ製する
方法である。今一つは、一つ一つのディスクに対して＠
ｓｆＪ：ｃｂし、これ等を再生用ディスクとするもので
ある。本発明は、特に後者の方法に適用するものであり
、半導体レ−ｆＩｔＭＩｆの低パワー（２０１１１Ｍ度
）で＆：！縁可能な、光学記録媒体を提供するものであ
る。Video values Q, PCM (Pulse Code Modification) 4Pi, etc. are recorded on the disc using laser light,
Techniques for regeneration are known. There are two ways to create a cantering disc. One method is to create a single piece of friction and use this friction to produce m discs for playback. Another thing is that for each disk @
sfJ:cb, and these are used as playback discs. The present invention is particularly applicable to the latter method, with low power (20111M degrees) of the semiconductor laser fItMIf &:! The present invention provides a portable optical recording medium.

以下、実施例を塔照して詳述する。Hereinafter, a detailed description will be given with reference to Examples.

第１図は本発明に係る光学＃！、録媒体な示ｆものであ
ｐ、基板（１１の上にビット形成層（２ｐが設けられて
いる。ビット形成層（２１としては、Ｔθ（テルル）糸
の材料が開発されている。ところが、テルルは酸化等に
より劣化する為、長期にわたる信号の保存が困難である
。そこで、本発明は、ビット形成−（２）のＬｒｃ酸化
防止膜（３７を設は友ものである。FIG. 1 shows the optical #! according to the present invention. In the case of a recording medium, a bit forming layer (2p) is provided on a substrate (11).As the bit forming layer (21), Tθ (tellurium) thread material has been developed. Since tellurium deteriorates due to oxidation, etc., it is difficult to preserve signals over a long period of time.Therefore, the present invention provides an Lrc oxidation prevention film (37) for bit formation (2).

ＪＩ＋板（１）は、例えば、ガラス、アクリル等の透明
樹脂（ＣＣ＠成する。この基板（１）の表面（ｃ５０Ａ
〜５ｏｏＸのテルル金ｒ１４噛（これはビット形成層と
なる）を形成する。テルルは融点が４００’Ｃ程度の低
融点金−であり、ｊＩ！Ｖｃ７ｕｏｏＸ以ｔの光を吸収
する吸収特性な持りている。従うて、半導体し一ψ光（
波長が８００ＣＩＡ以七のものをテルル層に焦射丁れば
、テルルＮにレーザ光が吸収されて熱が発生し、この熱
ｖＣＬＣデシルＩ−は融解し、以）てビット（４）が形
成される。The JI+ board (1) is made of a transparent resin (CC@) such as glass or acrylic.The surface of this board (1) (c50A
Form a ~5ooX tellurium gold r14 layer (this will become the bit forming layer). Tellurium is a low melting point gold with a melting point of about 400'C. It has an absorption property that absorbs light of Vc7uooX or higher. Therefore, the semiconductor is one ψ light (
When a laser beam with a wavelength of 800 CIA or more is focused on the tellurium layer, the laser beam is absorbed by the tellurium N and heat is generated, and this heat vCLC decile I- is melted, thus forming the bit (4). be done.

ところで、ビット形成層（２）の辷に設けられた酸化防
止膜（３）にもビットが形１成されないと、不都合であ
る。それ故、酸（ｅ防止膜（３〕としては、できる限り
低融点であ）、熱容蓋が小さい材料が艮い。By the way, it would be inconvenient if bits were not formed on the oxidation preventing film (3) provided on the side of the bit forming layer (2) as well. Therefore, an acid (as the e-preventing film (3)) should have a melting point as low as possible, and a material with a small heat capacity is recommended.

更に熱伝導率が小さい材料であることが望しい。Furthermore, it is desirable that the material has low thermal conductivity.

これが大きいと、テルルＩｌｌで発生し念熱が他へ拡散
し、酸化防止膜（３）が融点に達しにくくなるからであ
る。低融点材料としては、例えば、塩化ビニ−酢酸ビニ
−ル ールＡ％叡合体＜ｔＭ合比５＝１〕をネリ用して厚ざ５
ｏｏＸで良好ＩＣ記録ができた。This is because if this is large, the telethermal heat generated in tellurium Ill will be diffused elsewhere, making it difficult for the antioxidation film (3) to reach its melting point. As a low melting point material, for example, vinyl chloride-vinyl acetate-Rule A% composite <tM combination ratio 5 = 1] is used as a material with a thickness of 5.
Good IC recording was achieved with ooX.

所かる記録媒体に対して、レンズにて集光されたレーザ
光を照射すれば、レーザ光はテルル−にて吸収ざｎｌ、
以って熱が発生し、このに、ｒこよりテルル層が融解さ
れてピッｔ　＋４ＪがｔとｔＯＪ！ｉ、ざｎると訣に酸
化防止膜（３）にもピッ）　１４Ｊが形成さｒＬる。When a recording medium is irradiated with laser light focused by a lens, the laser light is absorbed by tellurium,
This generates heat, which causes the tellurium layer to melt and the pit t+4J becomes t and tOJ! 14J is also formed on the oxidation-preventing film (3).

以上述べ九本発明１Ｃ依れば、ビット形成層の上に酸化
防止膜な設は友ので、ビット形Ｆｌｉ、層の酸化な防止
でき、侶りを長期間保存することが吋きるものである。As described above, according to the present invention 1C, since an oxidation-preventing film is provided on the bit forming layer, oxidation of the bit-forming layer can be prevented and the product can be stored for a long period of time. .

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

第１図は本発明に味る光学記録媒体をボす図、第２図は
ピッｔが形成された状態な不Ｔ図である。 （１１は基板、（２ｊはビット形成層、１３〕は酸化防
止膜、（４）はビット。FIG. 1 is an open view of an optical recording medium according to the present invention, and FIG. 2 is an open view showing a state in which pits are formed. (11 is a substrate, (2j is a bit forming layer, 13] is an oxidation prevention film, (4) is a bit.

Claims (1)

【特許請求の範囲】 １１］　　レーザ光等を照射Ｔることにより信りとなる
ビットが形成される構成とした光学記録媒体であって、
Ｊｋ板と、この基板の上に設けられたビット形成・−と
、このピット形ｂｉ、鳩の上に設けらｎ、た酸化防止膜
とな９なる光学記録媒体。 １２）　　ピント形成−が＃膜テルル金に４層であり、
酸化防止膜が低融点樹脂層であることを特徴とする特＃
′Ｆ請求の範囲第１項記載の光学記録媒体。 （３）　　低融点樹脂層が塩化ビニール−酢酸ビニール
基塩合体であることを特徴とする待Ｉｆｌ−請求の範囲
第２項ｉｉ！、載の光学記録媒体。[Claims] 11] An optical recording medium configured such that reliable bits are formed by irradiating it with laser light or the like,
An optical recording medium consisting of a Jk plate, a bit formation provided on this substrate, this pit-shaped bi, and an anti-oxidation film provided on the dove. 12) Focus formation is 4 layers on #film tellurium gold,
Feature # characterized in that the antioxidant film is a low melting point resin layer
'F The optical recording medium according to claim 1. (3) Ifl characterized in that the low melting point resin layer is a vinyl chloride-vinyl acetate base combination - Claim 2 ii! , an optical recording medium.
JP57085786A 1982-05-20 1982-05-20 Optical recording medium Pending JPS58203643A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP57085786A JPS58203643A (en) 1982-05-20 1982-05-20 Optical recording medium

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP57085786A JPS58203643A (en) 1982-05-20 1982-05-20 Optical recording medium

Publications (1)

Publication Number Publication Date
JPS58203643A true JPS58203643A (en) 1983-11-28

Family

ID=13868566

Family Applications (1)

Application Number Title Priority Date Filing Date
JP57085786A Pending JPS58203643A (en) 1982-05-20 1982-05-20 Optical recording medium

Country Status (1)

Country Link
JP (1) JPS58203643A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4984232A (en) * 1988-04-08 1991-01-08 Fujitsu Limited Compatible optical disk

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4984232A (en) * 1988-04-08 1991-01-08 Fujitsu Limited Compatible optical disk

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