JPS6023038B2 - optical recording medium - Google Patents
optical recording mediumInfo
- Publication number
- JPS6023038B2 JPS6023038B2 JP55057634A JP5763480A JPS6023038B2 JP S6023038 B2 JPS6023038 B2 JP S6023038B2 JP 55057634 A JP55057634 A JP 55057634A JP 5763480 A JP5763480 A JP 5763480A JP S6023038 B2 JPS6023038 B2 JP S6023038B2
- Authority
- JP
- Japan
- Prior art keywords
- recording medium
- film
- tellurium
- optical recording
- copper phthalocyanine
- 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.)
- Expired
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
-
- 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
- G11B7/244—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 organic materials only
- G11B7/246—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 organic materials only containing dyes
- G11B7/248—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 organic materials only containing dyes porphines; azaporphines, e.g. phthalocyanines
-
- 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
- G11B7/244—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 organic materials only
- G11B7/249—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 organic materials only containing organometallic compounds
Landscapes
- Thermal Transfer Or Thermal Recording In General (AREA)
- Optical Record Carriers And Manufacture Thereof (AREA)
Description
【発明の詳細な説明】
本発明は光学情報記録装置における記録媒体に関し、特
にレーザ光に対して高感度な光学記録用媒体に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a recording medium for an optical information recording device, and particularly to an optical recording medium that is highly sensitive to laser light.
第１図は従来の光学情報記録装置を説明するための正面
図である。図において、１はしーザ光源、２はしーザ光
、３は変調器、４は光学レンズ、６は反射板、７は記録
媒体、８はモータである。FIG. 1 is a front view for explaining a conventional optical information recording device. In the figure, 1 is a laser light source, 2 is a laser beam, 3 is a modulator, 4 is an optical lens, 6 is a reflection plate, 7 is a recording medium, and 8 is a motor.
レーザ光源１よりのレーザ光２は変調器３によって変調
され、光学レンズ４、反射板５等を介して記録媒体７上
を照射して、核記録媒体７を穴明することによって情報
を記録している。A laser beam 2 from a laser light source 1 is modulated by a modulator 3, and is irradiated onto a recording medium 7 through an optical lens 4, a reflection plate 5, etc., and information is recorded by perforating the nuclear recording medium 7. ing.
上記記録媒体７については、金属薄膜、有機薄膜を含め
て数多くの物質が提案されている。Many materials have been proposed for the recording medium 7, including metal thin films and organic thin films.
特にビスマスＢｉ、テルルＴｅ等の低融点金属を第２図
に示すように透明ガラス基板９上に薄く（数百Ａ）蒸着
形成したものが、レーザ光に対する孔暁感度及び謙取時
のＳ／Ｎ等の点で有効であると言われている。しかし、
これら物質にしても、現状要求される超高速の情報記録
用媒体として用いる場合には、末が感度不足のため光源
としてはＡｒレーザを用いねばならない。In particular, low melting point metals such as bismuth Bi and tellurium Te are deposited thinly (several hundred amps) on a transparent glass substrate 9 as shown in FIG. It is said to be effective in terms of N, etc. but,
Even with these materials, when used as ultrahigh-speed information recording media currently required, an Ar laser must be used as a light source due to insufficient sensitivity.
従って大きいパワーのＡｒレーザでは当然冷却を必要と
し装置自体が大きくなるため、低パワーの半導体レーザ
等の光源で記録可能なものが望まれている。本発明の目
的はテルル薄膜に加え、銅フタロシアニン薄膜を使用し
て高感度にした光学記録媒体を提供することにより、上
述の問題点を改善するにある。Therefore, since a high power Ar laser naturally requires cooling and the device itself becomes large, a device that can record with a light source such as a low power semiconductor laser is desired. An object of the present invention is to improve the above-mentioned problems by providing a highly sensitive optical recording medium using a copper phthalocyanine thin film in addition to a tellurium thin film.
本発明の特徴は光学記録媒体において、情報媒体層を基
板上に被着ごせた銅フタロシアニン膜と、該銅フタロシ
アニン膜上に被着させたテルル膜とからなる複合膜によ
って形成して上述の目的を達している。A feature of the present invention is that in an optical recording medium, an information medium layer is formed by a composite film consisting of a copper phthalocyanine film deposited on a substrate and a tellurium film deposited on the copper phthalocyanine film. has achieved its purpose.
第３図は本発明による光学記録用媒体の１実施例の構造
と示す断面図である。FIG. 3 is a sectional view showing the structure of one embodiment of the optical recording medium according to the present invention.
図において、１０は透明な基板、１１は銅フタロシアニ
ン薄膜、１２はテルルＴｅ薄膜である。In the figure, 10 is a transparent substrate, 11 is a copper phthalocyanine thin film, and 12 is a tellurium Te thin film.
透明な基板１０上に、テルルＴｅより沸点の低い銅フタ
ロシァニン薄膜１１を設け、その上に光学記録媒体とし
て最適とされているテルルＴｅ薄膜１２を設けた複合膜
で光学記録用媒体を構成している。銅フタロシアニンは
有機染料で４００℃〜５００ｑｏの温度で昇華する。テ
ルルＴｅは融点が４５０００である。この複合膜にレー
ザ光を照射したときに、その加えられた熱により鋼フタ
ロシアニン薄膜１１は昇華し、同時に同温度で溶融する
上層のテルルＴｅ薄膜１ ２を溶解し穴明される。この
場合、上層の溶融状態にあるテルルＴｅ薄膜１２を下層
で昇華している銅フタロシァニン薄膜１１の昇華圧によ
り、テルルＴｅ薄膜１２の溶融除去をたすける効果とな
り、テルルＴｅ単層で用いた光学記録媒体に比べて後述
するように感度を数倍向上させていると思われる。第４
図は本発明による光学記録用媒体の作成の１実施例を説
明するための図で、イは正面図、口は断面図である。The optical recording medium is composed of a composite film in which a copper phthalocyanine thin film 11, which has a boiling point lower than that of tellurium Te, is provided on a transparent substrate 10, and a tellurium Te thin film 12, which is considered to be optimal as an optical recording medium, is provided on top of the copper phthalocyanine thin film 11. There is. Copper phthalocyanine is an organic dye that sublimes at a temperature of 400°C to 500qo. Tellurium Te has a melting point of 45,000. When this composite film is irradiated with a laser beam, the applied heat causes the steel phthalocyanine thin film 11 to sublime, and at the same time, the upper tellurium Te thin film 12, which melts at the same temperature, is dissolved and pierced. In this case, the sublimation pressure of the copper phthalocyanine thin film 11 sublimating the tellurium Te thin film 12 in the upper layer in a molten state has the effect of helping the melting and removal of the tellurium Te thin film 12, and optical recording using the tellurium Te single layer. It seems that the sensitivity is improved several times compared to the medium, as will be described later. Fourth
The figures are diagrams for explaining one embodiment of the production of an optical recording medium according to the present invention, where A is a front view and the opening is a cross-sectional view.
図において真空度１０‐４〜１０‐５Ｐａにした真空蒸
着器１３の内に、表面を十分洗浄し、ごみ、よごれ等を
落した直径３０仇吻、厚さ５肋のガラス円板１４を取付
ける。In the figure, a glass disk 14 with a diameter of 30 ribs and a thickness of 5 ribs, whose surface has been sufficiently cleaned to remove dust and dirt, is installed in a vacuum evaporator 13 with a vacuum level of 10-4 to 10-5 Pa. .
ガラス円板１４を１８仇ｐｍで回転させながら、銅フタ
ロシアニンを入れたＷ炉の箱形ボート１５から銅フタロ
シアニンを１０００△蒸着させる。また箱形ボート１５
のすぐ上に遮蔽板１６を設けて、該ボート１５から大き
なかたまりがガラス円板１４に付着することを防いでい
る。次に純度９９．９９９％のテルルＴｅを入れたＭｏ
炉のボート１７からテルルＴｅ３００△の薄膜を鋼フタ
ロシアニン薄膜の上に蒸着させる。なおＭｏ炉のボート
１７のすぐ上に遮蔽板１６を設けたのは前述したと同じ
理由である。又、２つの蒸発源の間には仕切板１８を設
け、鋼フタロシアニンとテルルの夫々の蒸気の混入を防
し、ぎ、さらにシャツ夕１９とマスク２０を設けて、所
要量の蒸着膜を円板１４に付着させている。なお、Ｗ炉
ボート１５上部に小さな孔２１を設け、鋼フタロシアニ
ンの均一な昇華蒸発をはかっている。以上のように作成
したテルルＴｅと鋼フタロシアニンの複合膜よりなる光
学記録用媒体を第１図に示したような光学情報記録装置
を用いて、情報の書込みを行った。While rotating the glass disk 14 at 18 pm, copper phthalocyanine was deposited at a rate of 1000△ from a box-shaped boat 15 of a W furnace containing copper phthalocyanine. Also box boat 15
A shielding plate 16 is provided directly above the boat 15 to prevent large lumps from adhering to the glass disk 14. Next, Mo containing tellurium Te with a purity of 99.999%
A thin film of tellurium Te300Δ is deposited from the furnace boat 17 onto the steel phthalocyanine film. The shielding plate 16 was provided immediately above the boat 17 of the Mo furnace for the same reason as mentioned above. In addition, a partition plate 18 is provided between the two evaporation sources to prevent the vapors of steel phthalocyanine and tellurium from getting mixed in, and a shirt plate 19 and a mask 20 are also provided to circularly spread the required amount of vapor deposited film. It is attached to the plate 14. A small hole 21 is provided in the upper part of the W furnace boat 15 to ensure uniform sublimation and evaporation of the steel phthalocyanine. Information was written on the optical recording medium made of the composite film of tellurium Te and steel phthalocyanine prepared as described above using an optical information recording apparatus as shown in FIG.
即ち〜レーザ光源１から発する波長４斑側の光を用いて
媒体７上にスポット（径１りｍ以下）照射し、情報記録
をした。なお、この記録用媒体７はモータ８により１８
０比Ｐｍで回転されている。情報ビットが形成されるレ
ーザパワーの闇値は従来テルルＴｅ膜厚３００Ａの場合
に腰面上で２籾ｗを必要としていたものが、本発明によ
る１０００Ａ膜厚の鋼フタロシアニンと３００Ａ膜厚の
テルルＴｅとの複合膜上では１皿ｗであった。That is, a spot (diameter of 1 m or less) was irradiated onto the medium 7 using light with a wavelength of 4 spots emitted from the laser light source 1 to record information. Note that this recording medium 7 is moved by the motor 8 to 18
It is rotated at 0 ratio Pm. The dark value of the laser power for forming information bits is that conventionally, when the tellurium Te film thickness is 300A, 2 grains w are required on the waist surface, but when the steel phthalocyanine film is 1000A film thick and the tellurium film is 300A film thick according to the present invention. On the composite film with Te, it was 1 plate w.
従って感度は従釆のものに比べて２倍以上向上した。ま
た、Ｓ／Ｎはビデオ信号に換算して４がＢで、従釆のも
のとほとんど変化していない。さらに、実施例２を示す
と、
前述の実施例と同様な方法を用いて、ガラス円板上に銅
フタロシアニンを４００Ａの膜厚に蒸着し、さらにその
上にテルルＴｅを３００Ａの膜厚蒸着して光学記録用媒
体を作製した。Therefore, the sensitivity has been improved by more than twice that of its predecessor. Further, the S/N is 4B when converted to a video signal, which is almost unchanged from that of the subordinate. Furthermore, in Example 2, copper phthalocyanine was deposited on a glass disk to a thickness of 400A using the same method as in the previous example, and tellurium Te was further deposited on top of it to a thickness of 300A. An optical recording medium was prepared.
この記録用媒体を前述と同じレーザ光による情報記録装
置で画像信号を記録して、その特性を調べた。An image signal was recorded on this recording medium using the same laser beam information recording device as described above, and its characteristics were investigated.
その結果感度では媒体面上で１８ｈｗ，Ｓ／Ｎは４３１
であった。これはテルルＴｅ３００Ａ膜厚のみによる従
来の記録用媒体に比べ、感度として約２倍弱、Ｓ／Ｎに
ついても同等の性能である。又、実施例３として、実施
例１と同様な方法を用いて、ガラス円板上に鋼フタロシ
アニン１００Ａ蒸着し、さらに、その上にテルルＴｅを
３５０Ａ厚さ蒸着して光学記録用媒体を作製した。As a result, the sensitivity was 18 hw on the medium surface, and the S/N was 431.
Met. This is approximately twice as sensitive as a conventional recording medium with only a tellurium Te300A film thickness, and the S/N ratio is also the same. In addition, as Example 3, an optical recording medium was produced by depositing 100A of steel phthalocyanine on a glass disk and then depositing tellurium Te to a thickness of 350A on a glass disk using the same method as in Example 1. .
この記録用媒体を前述と同じレーザ光による情報記録装
置を用いて記録し、その特性を調べた結果、従釆の記録
用媒体に比べ、感度として約１．２倍向上し、Ｓ／Ｎは
変らなかった。以上実施例により本発明を説明したが、
本発明によれば、光学記録媒体の情報媒体層を基板に被
着させた鋼フタロシアニン膜と該銅フタロシアニン膜上
に彼着させたテルル膜とからなる複合膜によって形成す
ることで、高感度の光学記録用媒体を提供でき、低パワ
ーのレーザ光源で情報を記録できる効果は大きい。As a result of recording on this recording medium using the same laser beam information recording device as mentioned above and examining its characteristics, the sensitivity was improved by about 1.2 times compared to the conventional recording medium, and the S/N was It didn't change. Although the present invention has been explained above with reference to Examples,
According to the present invention, the information medium layer of an optical recording medium is formed by a composite film consisting of a steel phthalocyanine film deposited on a substrate and a tellurium film deposited on the copper phthalocyanine film, thereby achieving high sensitivity. The effect of being able to provide an optical recording medium and record information using a low-power laser light source is significant.
第１図は光学情報記録装置を用いて、従来の記録用媒体
への記録を説明するための正面図、第２図は従来の記録
用媒体の構成を示す断面図、第３図は本発明による記録
用媒体の構成を示す断面図、第４図は本発明による光学
記録用媒体作成の１実施例を説明するための図で、イは
正面図、口は断面図、図中、１０は透明な基板、１１は
銅フタロシアニン薄膜、１２はテルル薄膜、１３は真空
蒸着器、１４はガラス円板、１５はＷ炉の箱形ボート、
１６は遮蔽板、１７はＭｏ炉のボート、１８は仕切板、
１９はシャツ夕、２川まマスクである。
第１図
第２図
第３図
第４図Fig. 1 is a front view for explaining recording on a conventional recording medium using an optical information recording device, Fig. 2 is a cross-sectional view showing the structure of the conventional recording medium, and Fig. 3 is a diagram of the present invention. 4 is a diagram for explaining one embodiment of the production of an optical recording medium according to the present invention, A is a front view, the opening is a sectional view, and in the figure, 10 is a A transparent substrate, 11 a copper phthalocyanine thin film, 12 a tellurium thin film, 13 a vacuum evaporator, 14 a glass disk, 15 a box-shaped boat of a W furnace,
16 is a shielding plate, 17 is a Mo furnace boat, 18 is a partition plate,
19 is a shirt evening, and 2 rivers are a mask. Figure 1 Figure 2 Figure 3 Figure 4
Claims (1)
り選択的に除去して情報を記録する光学記録媒体におい
て、前記情報媒体層を前記基板上に被覆させた銅フタロ
シアニン膜と、該銅フタロシアニン膜上に被着させたテ
ルル膜とからなる複合膜によつて形成したことを特徴と
する光学記録用媒体。 ２ 複合膜は銅フタロシアニン膜の厚さが１００〜５０
００Å、テルル膜の厚さが１００〜８００Åで形成する
ことを特徴とする前記特許請求の範囲第１項記載の光学
記録用媒体。[Scope of Claims] 1. An optical recording medium in which information is recorded by selectively removing a part of an information medium layer coated on a substrate with a laser beam, wherein the information medium layer is made of copper coated on the substrate. 1. An optical recording medium formed of a composite film consisting of a phthalocyanine film and a tellurium film deposited on the copper phthalocyanine film. 2 The thickness of the copper phthalocyanine film in the composite film is 100 to 50
00 Å, and the tellurium film has a thickness of 100 to 800 Å.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP55057634A JPS6023038B2 (en) | 1980-04-30 | 1980-04-30 | optical recording medium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP55057634A JPS6023038B2 (en) | 1980-04-30 | 1980-04-30 | optical recording medium |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS56154087A JPS56154087A (en) | 1981-11-28 |
| JPS6023038B2 true JPS6023038B2 (en) | 1985-06-05 |
Family
ID=13061318
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP55057634A Expired JPS6023038B2 (en) | 1980-04-30 | 1980-04-30 | optical recording medium |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6023038B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62186735U (en) * | 1986-05-19 | 1987-11-27 |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58121149A (en) * | 1981-12-22 | 1983-07-19 | Fujitsu Ltd | Recording medium |
| JPS58121153A (en) * | 1982-01-13 | 1983-07-19 | Fujitsu Ltd | Optical information medium |
| JPS5950048U (en) * | 1982-09-24 | 1984-04-03 | 富士通株式会社 | optical disc media |
| JPS62222446A (en) * | 1986-03-20 | 1987-09-30 | Fujitsu Ltd | Optical recording medium |
-
1980
- 1980-04-30 JP JP55057634A patent/JPS6023038B2/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62186735U (en) * | 1986-05-19 | 1987-11-27 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS56154087A (en) | 1981-11-28 |
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