JPS591298A - Optical recording medium - Google Patents
Optical recording mediumInfo
- Publication number
- JPS591298A JPS591298A JP57111954A JP11195482A JPS591298A JP S591298 A JPS591298 A JP S591298A JP 57111954 A JP57111954 A JP 57111954A JP 11195482 A JP11195482 A JP 11195482A JP S591298 A JPS591298 A JP S591298A
- Authority
- JP
- Japan
- Prior art keywords
- layer
- recording
- laser light
- light
- voltage
- 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
- G11B7/24—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
- G11B7/252—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
- G11B2007/25705—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 consisting essentially of inorganic materials
- G11B2007/25708—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 consisting essentially of inorganic materials containing group 13 elements (B, Al, Ga)
-
- 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
- G11B2007/25705—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 consisting essentially of inorganic materials
- G11B2007/25715—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 consisting essentially of inorganic materials containing 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
- G11B7/242—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
-
- 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
- G11B7/2535—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 polyesters, e.g. PET, PETG or PEN
Landscapes
- Thermal Transfer Or Thermal Recording In General (AREA)
- Read Only Memory (AREA)
- Optical Record Carriers And Manufacture Thereof (AREA)
Abstract
Description
【発明の詳細な説明】 この発明は光記録媒体に関する。[Detailed description of the invention] This invention relates to optical recording media.
レーザ光を使って情報の書き込みや、記録された情報の
読み出しに使用される光記録媒体は主として光ディスク
の分野で半導体レーザとそれに合う記録材料の出現によ
り画期的外進展を逐げているが、記録材料にｌ！問題が
多くて磁気ディスクや磁気テープと十分に競合できる段
階には致っていないのが現状でおる。Optical recording media, which are used to write information and read recorded information using laser light, have made unprecedented progress mainly in the field of optical disks with the advent of semiconductor lasers and recording materials compatible with them. , l for recording materials! Due to many problems, it is currently not at a stage where it can fully compete with magnetic disks and magnetic tapes.
光記録媒体の光ディスクのうち、５ａＱｅＰｒｃ実用化
が活発外のは追加記録が可能なものであり、ヒれの記録
材料は高感度である、熱伝導率が低い、光吸収係数が大
である、低融点、低沸点である等の条件を総合的に満す
ものとしてｈ系の金属薄膜が多く、情報の記録にはこの
金属薄膜にレーザ光で孔を開けたり黒化させたシして行
われている。尚、′Ｔ＃系以外の追加記録可能外記録材
料にはｘｎ＊の低融点金属や色素薄膜材料、銀有機フィ
ルムなどがあるが、これらは長期安定性や耐薬品性に問
題が多くて未だ研究域を脱しきれていない〇
ところで、Ｔ−系記録材料を使用した光記録媒体への情
報の書き込みはレーザ光の熱エネルギーを利用して行う
ため、非接触の記録が可能、レープ光スボッシの極小化
により高密度記録が可能な反面、次の各問題点が生起さ
れている。Among the optical discs of optical recording media, 5aQePrc, which is not actively put into practical use, is one that allows additional recording, and the fin recording material has high sensitivity, low thermal conductivity, and large optical absorption coefficient. There are many H-based metal thin films that comprehensively satisfy conditions such as low melting point and low boiling point, and information is recorded by making holes or blackening the metal thin film with a laser beam. It is being said. In addition, additional recordable recording materials other than the 'T# type include xn* low melting point metals, dye thin film materials, and silver organic films, but these have many problems with long-term stability and chemical resistance and are still not available. By the way, information is written on optical recording media using T-based recording materials using the thermal energy of laser light, so non-contact recording is possible. Although miniaturization allows high-density recording, the following problems arise.
（ａ）、記録時のレーザ光は記録層に孔を開けたシ黒化
させたシするだけの熱エネルギーが必要なため、大容量
のレーザ光源を必要とする。(a) During recording, the laser beam requires enough thermal energy to punch holes in the recording layer and darken the recording layer, so a large-capacity laser light source is required.
（ｂ）、レーザ光源のパワーに限度があり、これを補う
ため記録材料の感度を向上させる努力が外されているが
、高感度になる程高価となシ、実用化が難しい。(b) There is a limit to the power of the laser light source, and efforts have been made to improve the sensitivity of the recording material to compensate for this, but the higher the sensitivity, the more expensive it is, making it difficult to put it into practical use.
（Ｃ）、記録材料に高感度のものを使用して記録用レー
ザ光のパワーを小ならしめるととが可能だが、高感度の
記録材料は再生時のレーザ光で反応する恐れがあり、ま
た悪くすると保存中に配録データが消失、変化すること
がある。(C) It is possible to reduce the power of the recording laser beam by using a highly sensitive recording material, but there is a risk that the highly sensitive recording material will react with the laser beam during reproduction, and In the worst case, recorded data may be lost or changed during storage.
（→、レーザ光のパワーとの関係上、高速度記録が回部
である。(→Due to the power of the laser beam, high-speed recording is recommended.
要す為に従来はレーザ光の熱エネルギーのみで記録する
光記録媒体の域を出ず、そのため上記問題を含み、適当
なものが未だ開発されず、数々の利点を有しながらも磁
気ディスクや磁気テープと競合でき危いでいる。For this reason, conventional optical recording media have been limited to recording using only the thermal energy of laser light, and as a result, they suffer from the above-mentioned problems, and a suitable medium has not yet been developed. It is in danger of competing with magnetic tape.
本発明はかかる光記録媒体の問題点に鑑みてなされたも
ので、情報の書き込みに放電チネルギーとレーザ光の熱
エネルギーが利用できる画期的な光記録媒体を開発し提
供する。The present invention has been made in view of the problems of such optical recording media, and aims to develop and provide an epoch-making optical recording medium that can utilize discharge energy and thermal energy of laser light for writing information.
本発明の特徴は光導電体と記録体の重金層或は混合層を
有することで、情報の書き込みは前記重合層或は混合層
の全体に厚み方向から耐圧値以下の適当な電圧を印加し
、レーザ光を照射するととで実行される。との記録はレ
ーザ光照射部分だけが局部的にインピーダンス低下を起
すことで発生する放電のエネルギーとレーザ光照射によ
る熱エネルギーの両者で行われる０また配録時のレーザ
光照射はトリガ的な作用のみ行うようされ、記録に使わ
れるエネルギーは主として放電エネルギーであ抄、レー
ザ光の熱エネルギーは補助的なものである。このととに
ょシ、記録時のレーザ光は小パワーなもので十分であり
、また記録材料の光感度は熊視でき、とれによシ上記従
来問題点が全て解消されゐ。A feature of the present invention is that it has a heavy metal layer or a mixed layer of a photoconductor and a recording medium, and information is written by applying an appropriate voltage below the withstand voltage from the thickness direction to the entire polymerized layer or mixed layer. , is executed by irradiating the laser beam. Recording is performed using both the energy of the discharge that occurs when the impedance decreases locally in the area irradiated with the laser beam, and the thermal energy of the laser beam irradiation. The energy used for recording is mainly discharge energy, and the thermal energy of the laser beam is supplementary. In this case, a low-power laser beam is sufficient for recording, and the photosensitivity of the recording material is excellent, and all of the above-mentioned conventional problems have been solved.
以下本発明の具体的構造例を図面の各実施例と共ＩＩｃ
詳述する。Hereinafter, specific structural examples of the present invention will be explained along with each embodiment of the drawings.
Explain in detail.
第１図の第１実施例において、（１）はポリエステル等
の基板、（２）は基板＋ｌｌ上にアル電ニウム蒸着等の
手段で被着した導電層、（３）及び（４）祉導電層（２
）上に積層した本発明の特徴とする光導電層と透明な記
録層である。光導電Ｈ（３）は光が肖ると内部インピー
ダンスが低下するもので、例えば安価で特性的に安定で
ある理由で酸化亜鉛の微粒子（０，１μｍ以下）を樹脂
に混ぜたものを導電層（２）上に薄く塗布して形成され
る。記録層（４）は局部的な電流の放電現象で孔が開く
シの、或は黒化するものなど、いわゆる情報ピットが形
成される誘電体で、例えト透光性のポリエステルで形成
される。また第１図の（６１は記録層１４）上に被着し
た透明導電層で、例えば酸化インジウムで形成される。In the first embodiment shown in FIG. 1, (1) is a substrate made of polyester or the like, (2) is a conductive layer deposited on the substrate +ll by means such as aluminum vapor deposition, (3) and (4) is a conductive layer. Layer (2
) A photoconductive layer and a transparent recording layer, which are the characteristics of the present invention, are laminated on top of the photoconductive layer. Photoconductive H(3) is a material whose internal impedance decreases when exposed to light.For example, the conductive layer is made by mixing fine particles of zinc oxide (less than 0.1 μm) with resin because it is cheap and has stable characteristics. (2) Formed by applying a thin layer on top. The recording layer (4) is a dielectric material in which so-called information pits, such as holes that open or blacken due to local current discharge phenomena, are formed, and is made of translucent polyester, for example. . Further, in FIG. 1, 61 is a transparent conductive layer deposited on the recording layer 14, and is made of, for example, indium oxide.
上記光記録媒体（＝Ｉ）は円板状の光ディスク或はテー
プ状の光テープなどとして用いられる。これの情報の書
き込みは第２図に示す要領で行われる。先ず上下の各導
電層（２１＜５＋に直流電圧Ｖを印加する。この電圧Ｖ
は両溝電層＋２１ ＋Ｉｉ１間の耐圧値より小さく、後
述動作を起す大きさく約５Ｏ−１００Ｖ）に設定される
。而して、透明導電層（５）の上方より所望の箇所にレ
ーザ光（６）を照射する。The optical recording medium (=I) is used as a disc-shaped optical disk or a tape-shaped optical tape. This information is written in the manner shown in FIG. First, a DC voltage V is applied to each of the upper and lower conductive layers (21<5+. This voltage V
is smaller than the withstand voltage value between both groove conductor layers +21 +Ii1, and is set to a value of about 50-100V, which causes the operation described later. Then, a laser beam (6) is irradiated onto a desired location from above the transparent conductive layer (5).
いま透明導電層（５）上の一点ＰＩにレーザ光（６）が
照射されたとすると、レーザ光（１Ｓ）は透明配録層（
４）を透過して光導電層（３）の点ＰＩ（点Ｐ！の下方
）に入射する。すると点ＰＩにおける光導電層（３）の
インピーダンスが局部的に低下して、点Ｐ８に電圧Ｖが
集中的に加わり、これによって点Ｐ＄と点Ｐ１間にあゐ
ＩＩ己録層（４）の点デ雪でブレークダウン現象が生じ
て点Ｐ意に電流が集中的に流れ、この時の放電エネルギ
ーと点ＩＪに入射しているレーザ光（６）の熱エネルギ
ーでもって点Ｐ１の記録層（４）が局部的に加熱され、
この加熱によって例えば点ＰＩの記録層（４）とその上
の透明導電層（５）が溶融して孔が開き、ピット（７）
が形成される。ピット形成に要するエネルギーは放電エ
ネルギーが主であり、レーザ光（６）はピット形成予定
部分に電流を集中させるためのトリガ信号として用いら
れ、従って記録時のレーザ光源は再生時のレーザ光源と
同程度の小パワーのものが使用され、従来のような大パ
ワーのものは不必要である。Now, if a laser beam (6) is irradiated to one point PI on the transparent conductive layer (5), the laser beam (1S) will be applied to the transparent recording layer (
4) and enters the point PI (below the point P!) of the photoconductive layer (3). Then, the impedance of the photoconductive layer (3) at the point PI decreases locally, and the voltage V is intensively applied to the point P8. A breakdown phenomenon occurs at point P1, and a current flows intensively at point P. The discharge energy at this time and the thermal energy of the laser beam (6) incident at point IJ cause the recording layer at point P1 to (4) is locally heated,
By this heating, for example, the recording layer (4) at point PI and the transparent conductive layer (5) thereon are melted, holes are opened, and pits (7) are formed.
is formed. The energy required for pit formation is mainly discharge energy, and the laser light (6) is used as a trigger signal to concentrate the current in the area where pits are to be formed.Therefore, the laser light source during recording is the same as the laser light source during playback. A device with a relatively low power is used, and a conventional high power device is unnecessary.
第８図の第２実施例における光記録媒体（ｂ）はポリエ
ステル等の透明基板１１１の下面に第１実施例と同じ透
明導電層（６）、透明記！層（４）、光導電層（３）、
導電層（２）を積層したもので、配録の動作原理は同じ
である。この場合は基板（１）が保睡膜として利用され
る。またビット形成は黒化現象を利用して行うことが望
ましい。The optical recording medium (b) in the second embodiment shown in FIG. 8 has a transparent conductive layer (6) similar to that in the first embodiment on the lower surface of a transparent substrate 111 made of polyester or the like. layer (4), photoconductive layer (3),
The conductive layer (2) is laminated, and the operating principle of the arrangement is the same. In this case, the substrate (1) is used as a retentive film. Further, it is preferable to form bits by utilizing a blackening phenomenon.
第４図の第８実施例は上記実施例におけ為光導電層（８
）と記録層（４）を分けずにこの両層を構成する光導電
体と記録体を混合させて一層化した混合層（８）を有す
る光り日録媒体（Ｃ）を示す。尚、第４図の（９）は基
板、（１０）は基板（９）上に形成した導電層で、この
上に前記混合層（８）が形成される。（＋１）は混合層
（８）上に形成した透明導電層である。この場合の記録
動作原理も第１実施例の場合と同じである。Embodiment 8 in FIG. 4 is a photoconductive layer (8
) and the recording layer (4) are not separated, but the photoconductor and the recording material constituting these two layers are mixed to form a single layer (8). Note that (9) in FIG. 4 is a substrate, and (10) is a conductive layer formed on the substrate (9), on which the mixed layer (8) is formed. (+1) is a transparent conductive layer formed on the mixed layer (8). The recording operation principle in this case is also the same as in the first embodiment.
以上のように、本発明によれば記録用レーザ光源の小パ
ワー化が実現でき、また記録は主として放電エネルギー
で行うため記録材料に安価なものの採用が可能であり、
従来のように高感度で高価なものの使用や高感度ゆえの
データ消失、変化等の問題が難なく解決され、とれによ
抄記録の高速化も容易に実現でき、磁気ディスクや磁気
テープと十分に競合できる光記録媒体が提供できる。As described above, according to the present invention, the power of the laser light source for recording can be reduced, and since recording is mainly performed using discharge energy, it is possible to use inexpensive recording materials.
The conventional problems of using high-sensitivity and expensive equipment, data loss and data change due to high sensitivity are easily solved, and high-speed paper recording can be easily achieved, and it is fully compatible with magnetic disks and magnetic tapes. A competitive optical recording medium can be provided.
第１図及び第２図は本発明の一実施例を示す部分断面図
及び記録動作時の部分断面図、第８図及び第４図は本発
明の他の各実施例を示す部分断面図である。
１３）・・・光導電体（層）、 ＋４１−・・記録体（
層）、（６）・・・レーザ光、（８）−・・混合層。1 and 2 are partial cross-sectional views showing one embodiment of the present invention and a partial cross-sectional view during recording operation, and FIGS. 8 and 4 are partial cross-sectional views showing other embodiments of the present invention. be. 13)...Photoconductor (layer), +41-...Recording body (
layer), (6)...laser light, (8)...mixed layer.
Claims (1)
、尚該重合層成Ｆｉ混合層への厚み方向の電圧印加とレ
ープ光の局部的照射にて光照射部分におけるインピーダ
ンス低下による放電エネルギーと光エネルギーを利用し
て情報の書き込みを行うようにしたことを特徴とする光
記録媒体(1) The polymer layer structure of the photoconductor and the recording medium has a mixed layer, and the impedance at the light irradiated part is changed by applying a voltage in the thickness direction to the Fi mixed layer of the polymer layer structure and locally irradiating it with rape light. An optical recording medium characterized in that information is written using discharge energy and light energy caused by a drop.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57111954A JPS591298A (en) | 1982-06-28 | 1982-06-28 | Optical recording medium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57111954A JPS591298A (en) | 1982-06-28 | 1982-06-28 | Optical recording medium |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS591298A true JPS591298A (en) | 1984-01-06 |
| JPH0114878B2 JPH0114878B2 (en) | 1989-03-14 |
Family
ID=14574316
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP57111954A Granted JPS591298A (en) | 1982-06-28 | 1982-06-28 | Optical recording medium |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS591298A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6338588A (en) * | 1986-08-01 | 1988-02-19 | Seiken Kagaku Kk | Alkaline peeling liquid |
| JPH05339738A (en) * | 1992-01-21 | 1993-12-21 | General Electric Co <Ge> | Method for improving adhesion of electroless plated film to resinous article by permanganate treatment |
-
1982
- 1982-06-28 JP JP57111954A patent/JPS591298A/en active Granted
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6338588A (en) * | 1986-08-01 | 1988-02-19 | Seiken Kagaku Kk | Alkaline peeling liquid |
| JPH05339738A (en) * | 1992-01-21 | 1993-12-21 | General Electric Co <Ge> | Method for improving adhesion of electroless plated film to resinous article by permanganate treatment |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0114878B2 (en) | 1989-03-14 |
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