JPS63158293A - Optical information signal recording medium - Google Patents
Optical information signal recording mediumInfo
- Publication number
- JPS63158293A JPS63158293A JP61304491A JP30449186A JPS63158293A JP S63158293 A JPS63158293 A JP S63158293A JP 61304491 A JP61304491 A JP 61304491A JP 30449186 A JP30449186 A JP 30449186A JP S63158293 A JPS63158293 A JP S63158293A
- Authority
- JP
- Japan
- Prior art keywords
- recording medium
- information signal
- optical information
- membrane
- signal recording
- 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
- G11B7/243—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
- G11B2007/24304—Metals or metalloids group 2 or 12 elements (e.g. Be, Ca, Mg, Zn, Cd)
-
- 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
- G11B2007/24318—Non-metallic elements
- G11B2007/2432—Oxygen
Landscapes
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (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】
（産業上の利用分野）
本発明は光学的情報信号記録媒体に係り、特に毒性の少
ない物質を用いて、加熱により十分な反射率の変化が得
られる光学的情報信号記録媒体に関する。Detailed Description of the Invention (Industrial Application Field) The present invention relates to an optical information signal recording medium, and in particular to an optical information signal recording medium that uses a less toxic substance and can obtain a sufficient change in reflectance by heating. Regarding recording media.
（従来の技術）
従来より、基板上に形成された薄膜層にレーザー光を照
射し、７ＩＪ膜層の反射率を変化させることにより情報
信号を記録し、その反射率の変化を検出することにより
情報信号を再生する光学的情報信号記録媒体が種々提案
されている。(Prior art) Conventionally, information signals are recorded by irradiating a thin film layer formed on a substrate with laser light to change the reflectance of the 7IJ film layer, and by detecting the change in reflectance. Various optical information signal recording media for reproducing information signals have been proposed.
例えば、従来の光学的情報信号記録媒体は、ＴｅＯｘ、
Ｔｅ−８ｅ−８ｎ等のＴｅを主成分とする薄膜を基板上
に形成していた。For example, conventional optical information signal recording media include TeOx,
A thin film mainly composed of Te, such as Te-8e-8n, was formed on a substrate.
（発明が解決しようとする問題点）
しかし、Ｔｅ、Ｓｅ等のカルコゲン元素は有毒であり、
人体に悪影響を及ぼす危険性があった。(Problem to be solved by the invention) However, chalcogen elements such as Te and Se are toxic;
There was a risk of adverse effects on the human body.
（問題点を解決するための手段）
そこで、上記問題点を解決し、良好な光学的特性を得る
ために、基板上にＺｎ及び５ｂ２０３を主成分とする薄
膜を形成した光学的情報信号記録媒体であって、この薄
膜中にＺｎを略３５乃至４５原子％含み、主として加熱
による薄膜の光学的特性の変化によって情報を記録する
ことを特徴とする光学的情報信号記録媒体を提供するも
のである。(Means for Solving the Problems) Therefore, in order to solve the above problems and obtain good optical characteristics, an optical information signal recording medium is provided in which a thin film containing Zn and 5B203 as main components is formed on a substrate. The present invention provides an optical information signal recording medium which contains approximately 35 to 45 atomic percent of Zn in the thin film and records information mainly by changing the optical properties of the thin film by heating. .
（発明の開示）
本発明者は、有毒なＴｅ、Ｓｅ等のカルコゲン元素を主
成分とする薄膜を形成した光学的情報信号記録媒体でな
くとも、加熱により十分な反射率の変化が得られ良好な
記録再生を行なうには、薄膜の組成をどのように構成す
れば良いかの研究を鋭意押し進めてきた。士の結果、カ
ルコゲン元素に比べて毒性の少ないＺｎをＴｅ、Ｓｅ等
の代わりにｎ膜の成分とすると、この光学的情報信号記
録媒体は、従来の光学的情報信号記録媒体と同等もしく
はそれ以上の優れた特長を示すようになることを見出し
た。すなわち、本発明者は、Ｚｎ及び８１）２０３を主
成分とする薄膜のＺｎの含有率を変化させて光学的特性
を測定した結果、薄膜中にＺｎを約３５乃至４５原子％
含む光学的情報信号記録媒体が、最も良好な記録再生を
行なうことを見出した。この光学的情報信号記録媒体は
加熱により少なくとも７％以上は反射率が変化し十分な
Ｃ／Ｎが得られる。(Disclosure of the Invention) The present inventor has discovered that even if the optical information signal recording medium is not formed with a thin film mainly composed of toxic chalcogen elements such as Te and Se, a sufficient change in reflectance can be obtained by heating. We have been actively researching how to configure the composition of thin films in order to achieve effective recording and playback. As a result, if Zn, which is less toxic than chalcogen elements, is used as a component of the N film instead of Te, Se, etc., this optical information signal recording medium will be equivalent to or better than conventional optical information signal recording media. It has been found that this material exhibits excellent features. That is, as a result of measuring the optical properties of a thin film containing Zn and 81)203 as main components by varying the Zn content, the inventor found that the Zn content in the thin film was about 35 to 45 at%.
It has been found that an optical information signal recording medium containing the above-mentioned method performs the best recording and reproduction. The reflectance of this optical information signal recording medium changes by at least 7% when heated, and a sufficient C/N can be obtained.
（実施例１）
第１図は本発明になる光学的情報信号記録媒体の構造を
示す図である。１は基板であり、本実施例ではガラス基
板を用いた。(Example 1) FIG. 1 is a diagram showing the structure of an optical information signal recording medium according to the present invention. 1 is a substrate, and in this example, a glass substrate was used.
２はＺｎ−３ｂ２０３薄膜であり、Ｚｎと５ｂ２０３と
を２元蒸着法により、基板１上に約１２００人の厚さで
成膜した。Ｚｎの含有率は、３９．０原子％である。2 is a Zn-3b203 thin film, and Zn and 5b203 were deposited on the substrate 1 to a thickness of about 1200 by a binary evaporation method. The content of Zn is 39.0 at%.
この記録媒体を２００℃前後で熱処理し、熱処理する前
後での反射率の変化を測定する。２００℃前後での熱処
理は、レーザー光（波長８３０ｎｍ）で記録媒体に情報
信号を記録することに相当する。This recording medium is heat treated at around 200° C., and the change in reflectance before and after the heat treatment is measured. The heat treatment at around 200° C. corresponds to recording an information signal on the recording medium with laser light (wavelength: 830 nm).
（実施例２）
実施例１において、Ｚｎ−８ｂ２０：＋薄膜中のｚｎの
含有率を４３．０原子％とするほかは全く同様に行なっ
て光学的情報信号記録媒体を得る。(Example 2) An optical information signal recording medium is obtained in exactly the same manner as in Example 1 except that the content of Zn in the Zn-8b20:+ thin film is changed to 43.0 atomic %.
（実施例３）
実施例１におイテ、Ｚｎ−８ｂ２０：＋ｉ４膜中のＺｎ
の含有率を４５．０原子％とするほかは全く同様に行な
って光学的情報信号記録媒体を得る。(Example 3) Same as Example 1, Zn in Zn-8b20:+i4 film
An optical information signal recording medium is obtained in exactly the same manner except that the content of is changed to 45.0 atomic %.
（比較例１）
実施例１において、Ｚｎ ５ｂ２０３薄膜中のｚｎの
含有率を２７．０原子％とするほかは全く同様に行なっ
て光学的情報信号記録媒体を得る。(Comparative Example 1) An optical information signal recording medium was obtained in exactly the same manner as in Example 1, except that the content of Zn in the Zn 5b203 thin film was changed to 27.0 atomic %.
（比較例２）
実施例１において、７ｎ−８ｂ２０３薄膜中のＺｎの含
有率を３３．０原子％とするほかは全く同様に行なって
光学的情報信号記録媒体を得る。(Comparative Example 2) An optical information signal recording medium was obtained in exactly the same manner as in Example 1 except that the Zn content in the 7n-8b203 thin film was changed to 33.0 at %.
（比較例３）
実施例１において、Ｚｎ−８ｔ）２０３薄膜中のＺｎの
含有率を５０．５原子％とするほかは全く同様に行なっ
て光学的情報信号記録媒体を得る。(Comparative Example 3) An optical information signal recording medium is obtained in exactly the same manner as in Example 1 except that the content of Zn in the Zn-8t)203 thin film is changed to 50.5 atomic %.
（比較例４）
実施例１において、Ｚｎ−８ｂ２０３薄膜中のＺｎの含
有率を５５．ｏ原子％とするほかは全く同様に行なって
光学的情報信号記録媒体を得る。(Comparative Example 4) In Example 1, the Zn content in the Zn-8b203 thin film was set to 55. An optical information signal recording medium is obtained in exactly the same manner except that o atomic % is used.
（比較例５）
実施例１において、Ｚｎ−８ｂ２０ｓｌ膜中のＺｎの含
有率を５８．０原子％とするほかは全く同様に行なって
光学的情報信号記録媒体を得る。(Comparative Example 5) An optical information signal recording medium was obtained in exactly the same manner as in Example 1, except that the Zn content in the Zn-8b20sl film was changed to 58.0 atomic %.
（特性）
上記各個を実施例１と同一の条件で実験し、その結果よ
り得た光学的情報信号記録媒体の光学的特性を表に示す
。(Characteristics) Each of the above was tested under the same conditions as in Example 1, and the optical characteristics of the optical information signal recording medium obtained from the results are shown in the table.
この表かられかるように、本実施例の光学的情報信号記
録媒体は反射率の変化に優れている。これに対し、Ｚｎ
が含まれていても少なすぎる場合及び逆に多すぎる場合
には、比較例かられかるように、反射率が加熱処理の前
後であまり変化していない。As can be seen from this table, the optical information signal recording medium of this example has excellent change in reflectance. On the other hand, Zn
Even if it is contained, if it is too small, or conversely if it is too large, the reflectance does not change much before and after the heat treatment, as can be seen from the comparative example.
（発明の効果）
以上のように、本発明になる光学的情報信号記録媒体は
、毒性の少ないｚｎを主成分とするＺｎ−８ｔ）２０：
＋ｉｌ膜中にｚｎを約３５乃至４５原子％含むようにし
たので、人体への悪影響がなく安全に製造できる。ぎら
に、加熱により反射率が大きく変化するので、従来の毒
性の強い光学的情報信号記録媒体と同等もしくはそれ以
上の優れたＣ／Ｎが得られ、情報信号の良好な記録再生
を行なうことが可能となる。(Effects of the Invention) As described above, the optical information signal recording medium according to the present invention contains Zn-8t)20, which has Zn as a main component, which is less toxic.
Since the +il film contains about 35 to 45 atomic percent of Zn, it can be manufactured safely without any adverse effects on the human body. Furthermore, since the reflectance changes significantly due to heating, it is possible to obtain an excellent C/N ratio that is equivalent to or better than that of conventional highly toxic optical information signal recording media, and to perform good recording and reproduction of information signals. It becomes possible.
第１図は本発明になる光学的情報信号記録媒体の構造を
示す図である。
１・・・基板、２・・・ｚｎ−８ｂ２０３薄膜。
第１図FIG. 1 is a diagram showing the structure of an optical information signal recording medium according to the present invention. 1... Substrate, 2... ZN-8B203 thin film. Figure 1
Claims (1)
形成した光学的情報信号記録媒体であって、この薄膜中
にＺｎを略３５乃至４５原子％含み、主として加熱によ
る薄膜の光学的特性の変化によって情報を記録すること
を特徴とする光学的情報信号記録媒体。This is an optical information signal recording medium in which a thin film mainly composed of Zn and Sb_2O_3 is formed on a substrate, and this thin film contains about 35 to 45 at% of Zn, and the optical characteristics of the thin film change mainly due to heating. An optical information signal recording medium for recording information.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61304491A JPS63158293A (en) | 1986-12-20 | 1986-12-20 | Optical information signal recording medium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61304491A JPS63158293A (en) | 1986-12-20 | 1986-12-20 | Optical information signal recording medium |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63158293A true JPS63158293A (en) | 1988-07-01 |
Family
ID=17933671
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61304491A Pending JPS63158293A (en) | 1986-12-20 | 1986-12-20 | Optical information signal recording medium |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63158293A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008129826A1 (en) * | 2007-03-30 | 2008-10-30 | Panasonic Corporation | Information recording medium and method for manufacturing the same |
-
1986
- 1986-12-20 JP JP61304491A patent/JPS63158293A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008129826A1 (en) * | 2007-03-30 | 2008-10-30 | Panasonic Corporation | Information recording medium and method for manufacturing the same |
| US8470514B2 (en) | 2007-03-30 | 2013-06-25 | Panasonic Corporation | Information recording medium and method for manufacturing the same |
| JP5437793B2 (en) * | 2007-03-30 | 2014-03-12 | パナソニック株式会社 | Information recording medium and manufacturing method thereof |
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