JPH0454299B2 - - Google Patents
Info
- Publication number
- JPH0454299B2 JPH0454299B2 JP56201712A JP20171281A JPH0454299B2 JP H0454299 B2 JPH0454299 B2 JP H0454299B2 JP 56201712 A JP56201712 A JP 56201712A JP 20171281 A JP20171281 A JP 20171281A JP H0454299 B2 JPH0454299 B2 JP H0454299B2
- Authority
- JP
- Japan
- Prior art keywords
- recording
- transparent substrate
- dye
- laser beam
- wavelength
- 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 - Lifetime
Links
- 239000000758 substrate Substances 0.000 claims description 38
- 230000003287 optical effect Effects 0.000 claims description 28
- 239000007787 solid Substances 0.000 claims description 16
- 239000010409 thin film Substances 0.000 claims description 16
- 238000000034 method Methods 0.000 claims description 15
- 238000010521 absorption reaction Methods 0.000 claims description 6
- 230000001678 irradiating effect Effects 0.000 claims description 3
- 239000000975 dye Substances 0.000 description 39
- 239000010410 layer Substances 0.000 description 16
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 10
- 239000004065 semiconductor Substances 0.000 description 8
- 230000003595 spectral effect Effects 0.000 description 8
- ANRHNWWPFJCPAZ-UHFFFAOYSA-M thionine Chemical compound [Cl-].C1=CC(N)=CC2=[S+]C3=CC(N)=CC=C3N=C21 ANRHNWWPFJCPAZ-UHFFFAOYSA-M 0.000 description 6
- 230000001747 exhibiting effect Effects 0.000 description 5
- 239000010408 film Substances 0.000 description 5
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- 239000011230 binding agent Substances 0.000 description 3
- 239000000428 dust Substances 0.000 description 3
- SCYULBFZEHDVBN-UHFFFAOYSA-N 1,1-Dichloroethane Chemical compound CC(Cl)Cl SCYULBFZEHDVBN-UHFFFAOYSA-N 0.000 description 2
- XURABDHWIADCPO-UHFFFAOYSA-N 4-prop-2-enylhepta-1,6-diene Chemical compound C=CCC(CC=C)CC=C XURABDHWIADCPO-UHFFFAOYSA-N 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- 230000006870 function Effects 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- GJCOSYZMQJWQCA-UHFFFAOYSA-N 9H-xanthene Chemical compound C1=CC=C2CC3=CC=CC=C3OC2=C1 GJCOSYZMQJWQCA-UHFFFAOYSA-N 0.000 description 1
- 239000004925 Acrylic resin Substances 0.000 description 1
- 229920000178 Acrylic resin Polymers 0.000 description 1
- 229920006353 Acrylite® Polymers 0.000 description 1
- 229930192627 Naphthoquinone Natural products 0.000 description 1
- 229920000297 Rayon Polymers 0.000 description 1
- 229910052793 cadmium Inorganic materials 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- QDLAGTHXVHQKRE-UHFFFAOYSA-N lichenxanthone Natural products COC1=CC(O)=C2C(=O)C3=C(C)C=C(OC)C=C3OC2=C1 QDLAGTHXVHQKRE-UHFFFAOYSA-N 0.000 description 1
- 230000031700 light absorption Effects 0.000 description 1
- DZVCFNFOPIZQKX-LTHRDKTGSA-M merocyanine Chemical compound [Na+].O=C1N(CCCC)C(=O)N(CCCC)C(=O)C1=C\C=C\C=C/1N(CCCS([O-])(=O)=O)C2=CC=CC=C2O\1 DZVCFNFOPIZQKX-LTHRDKTGSA-M 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 150000002791 naphthoquinones Chemical class 0.000 description 1
- 231100000989 no adverse effect Toxicity 0.000 description 1
- 239000004926 polymethyl methacrylate Substances 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000002964 rayon Substances 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000010979 ruby Substances 0.000 description 1
- 229910001750 ruby Inorganic materials 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000002834 transmittance Methods 0.000 description 1
- FKVXIGHJGBQFIH-UHFFFAOYSA-K trisodium 5-amino-3-[[4-[4-[(7-amino-1-hydroxy-3-sulfonatonaphthalen-2-yl)diazenyl]phenyl]phenyl]diazenyl]-4-hydroxynaphthalene-2,7-disulfonate Chemical compound C1=CC(=CC=C1C2=CC=C(C=C2)N=NC3=C(C=C4C=CC(=CC4=C3[O-])N)S(=O)(=O)O)N=NC5=C(C6=C(C=C(C=C6C=C5S(=O)(=O)O)S(=O)(=O)[O-])N)[O-].[Na+].[Na+].[Na+] FKVXIGHJGBQFIH-UHFFFAOYSA-K 0.000 description 1
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
- G11B7/244—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
- G11B7/247—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 methine or polymethine dyes
- G11B7/2472—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 methine or polymethine dyes cyanine
-
- 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
- G11B7/242—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
-
- 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
Description
【発明の詳細な説明】
本発明は透明基板上にバインダーを含まない色
素固体薄膜を有する反射型光学的メモリ媒体を用
いた光学的記録再生方法に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an optical recording and reproducing method using a reflective optical memory medium having a binder-free dye solid thin film on a transparent substrate.
従来、色素薄膜を記録層として適用した光学的
記録再生方法は知られている（例えば、特開昭56
−16948号公報）。すなわち、この種の光学的記録
再生方法は基板と色素薄膜記録層との間に金属反
射膜を設けた媒体に対し、記録層の側から記録層
の光吸収率が極大を示す波長のレーザビームを集
光照射して情報を記録再生するものである。 Conventionally, optical recording and reproducing methods using a dye thin film as a recording layer have been known (for example,
-16948). In other words, in this type of optical recording/reproducing method, a laser beam of a wavelength at which the optical absorption rate of the recording layer is at its maximum is applied from the recording layer side to a medium in which a metal reflective film is provided between a substrate and a dye thin film recording layer. It records and reproduces information by irradiating it with focused light.
しかしながら、かかるメモリ媒体においては色
素記録層の保護が困難であるため記録層に付着し
た小ゴミなどによつて情報の記録再生に誤りを生
じやすいことおよび、反射型光学メモリ媒体とし
て利用するためには金属反射膜が必要であり媒体
の構成が複雑になるとう問題がある。 However, in such memory media, it is difficult to protect the dye recording layer, so errors in recording and reproducing information are likely to occur due to small dust adhering to the recording layer. The problem is that a metal reflective film is required, which complicates the structure of the medium.
また、従来の光学的記録再生方法は再生効率が
低いという欠点もあつた。 Furthermore, conventional optical recording and reproducing methods have a drawback of low reproduction efficiency.
本発明は上記問題に鑑みてなされたものであ
り、その目的は従来技術の欠点を解消し、層構成
を簡単にするため記録層を固体色素の単層膜とし
かつ記録層の保護が容易にできるように透明基板
側より記録および再生用レーザ光を照射すると共
に再生信号のコントラストの高められた情報の記
録および再生を行なう光学的記録再生方法を提供
することである。 The present invention has been made in view of the above-mentioned problems, and its purpose is to eliminate the drawbacks of the prior art, and to simplify the layer structure by forming the recording layer into a single layer film of solid dye, and making it easy to protect the recording layer. It is an object of the present invention to provide an optical recording and reproducing method in which recording and reproducing laser light is irradiated from the transparent substrate side and information is recorded and reproduced with increased contrast of the reproduced signal.
すなわち、本発明によれば、透明基板上にバイ
ンダーを含まない色素固体薄膜を有し、かつ該透
明基板を通して記録用レーザ光および再生用レー
ザ光を照射することにより情報の記録再生を行な
う反射型光学メモリ媒体に対して、前記記録及び
再生レーザ光を前記透明基板側から照射するとと
もに、
再生レーザ光を照射した際の反射型メモリ媒体
による反射率が透明基板による反射率の３倍以上
となるようにしたことを特徴とする光学的記録再
生方法が提供される。 That is, according to the present invention, there is provided a reflective type that has a dye solid thin film containing no binder on a transparent substrate, and records and reproduces information by irradiating a recording laser beam and a reproduction laser beam through the transparent substrate. The optical memory medium is irradiated with the recording and reproducing laser beam from the transparent substrate side, and the reflectance of the reflective memory medium when irradiated with the reproducing laser beam is three times or more that of the transparent substrate. There is provided an optical recording and reproducing method characterized by the following.
また、記録時および再生時のレーザ光の波長は
色素固体薄膜の長波長側の光吸収端付近の波長と
略一致することを特徴とする上記の光学的記録再
生方法が提供される。 Further, there is provided the optical recording and reproducing method described above, characterized in that the wavelength of the laser beam during recording and reproducing substantially matches the wavelength near the optical absorption edge on the longer wavelength side of the dye solid thin film.
すなわち、本発明の光学的記録再生方法は、
反射型光学的メモリ媒体として、透明基板に
バインダーを含まない色素固体膜を設けたもの
を用い、
記録および再生レーザ光を透明基板側から照
射して、情膜の記録再生を行ない、
さらに、再生レーザ光を照射した際の反射型
メモリ媒体による反射率が透明基板による反射
率の３倍以上となるようにした点、
を特徴とするものである。 That is, the optical recording and reproducing method of the present invention uses a transparent substrate provided with a dye solid film containing no binder as a reflective optical memory medium, and irradiates recording and reproducing laser light from the transparent substrate side. , recording and reproducing the information film, and further, the reflectance of the reflective memory medium when irradiated with the reproducing laser beam is three times or more that of the transparent substrate. .
そして、かかる構成を採ることにより、本発明
は、記録層を充分に保護できると共に、記録信号
のコントラストが充分に高まり再生効率に優れる
といつた顕著な作用効果を奏し得たものである。 By adopting such a configuration, the present invention can sufficiently protect the recording layer, and achieve remarkable effects such as sufficiently increasing the contrast of the recorded signal and providing excellent reproduction efficiency.
本発明における色素固体薄膜はたとえば、透明
基板上にバインダーを含まない色素溶液を塗布
（回転塗布機などを用いて）し乾燥することによ
つて容易に形成することができる。 The dye solid thin film in the present invention can be easily formed, for example, by coating a binder-free dye solution on a transparent substrate (using a spin coater or the like) and drying it.
本発明に用いられる色素は上記条件を達成する
ように適宜選択する必要があるが、後記実施例に
示すようにシアニン系色素およびトリアリルメタ
ン系色素が特に好ましいものである。その他の色
素としては、メロシアニン系、キサンテン系、ス
クアリウム系、ナフトキノン系などの色素を適宜
選択しようできる。 The dye used in the present invention must be appropriately selected so as to achieve the above conditions, and as shown in Examples below, cyanine dyes and triallylmethane dyes are particularly preferred. As other dyes, merocyanine-based, xanthene-based, squalium-based, naphthoquinone-based dyes, and the like can be selected as appropriate.
本発明の光学的記録再生方法においては、記録
層の保護及び再生効率向上のために記録レーザ光
及び再生レーザ光を透明基板側から照射する必要
がある。 In the optical recording and reproducing method of the present invention, it is necessary to irradiate the recording laser beam and the reproducing laser beam from the transparent substrate side in order to protect the recording layer and improve reproduction efficiency.
本発明で用いる光学的メモリ媒体に適用される
レーザ光は一般に有機色素は波長選択性が高いた
め有機色素の吸収波長に応じて選択する必要があ
る。従つて、それぞれの有機色素に応じて、N2、
He−Cd、Ar、He−He、ルビー、色素、半導体
レーザなどを選択すればよい。 Since organic dyes generally have high wavelength selectivity, the laser light applied to the optical memory medium used in the present invention must be selected depending on the absorption wavelength of the organic dye. Therefore, depending on each organic dye, N 2 ,
He-Cd, Ar, He-He, ruby, dye, semiconductor laser, etc. may be selected.
本発明においては、後記実施例１〜６で示され
るように、透明基板側からの反射率は色素固体薄
膜の長波長側の吸収端付近に反射率35％程度の強
い反射があらわれている。 In the present invention, as shown in Examples 1 to 6 below, the reflectance from the transparent substrate side shows strong reflection with a reflectance of about 35% near the absorption edge on the long wavelength side of the dye solid thin film.
従つて、本発明方法においては、これらの色素
固体薄膜の長波長側の吸収端付近の波長レーザ光
を用いた場合には光の吸収と反射を兼ね備えた分
光特性が得られるので、同じ波長のレーザ光を記
録用及び再生用に使用することができる。 Therefore, in the method of the present invention, when laser light with a wavelength near the absorption edge on the longer wavelength side of these dye solid thin films is used, spectral characteristics that combine light absorption and reflection can be obtained. Laser light can be used for recording and reproduction.
また、本発明方法ではメモリ媒体として小型低
価格の半導体レーザ光の波長750nm〜850nmで記
録再生の可能な第４図および第６図ないし第９図
の特性を示す色素の固体薄膜を有するメモリ媒体
を用いること実用的により好ましい。 In addition, in the method of the present invention, a small, low-cost memory medium having a solid thin film of a dye exhibiting the characteristics shown in FIGS. It is practically more preferable to use
また、本発明に係る反射型光学メモリ媒体の透
明基板すなわち透明樹脂（例えばアクリル樹脂）
あるいはガラスの反射率は通常５％程度であるか
ら、本発明においては再生信号のコントラストを
十分に高めるために、該反射型光学メモリ媒体の
記録層の反射率すなわち色素固体薄膜の反射率を
透明基板の反射率の３倍以上とする必要がある。 Further, a transparent substrate of the reflective optical memory medium according to the present invention, that is, a transparent resin (for example, acrylic resin)
Alternatively, since the reflectance of glass is usually about 5%, in the present invention, in order to sufficiently increase the contrast of the reproduced signal, the reflectance of the recording layer of the reflective optical memory medium, that is, the reflectance of the dye solid thin film, is made transparent. It needs to be three times or more the reflectance of the substrate.
具体的には、色素固体薄膜の光反射率を透明基
板側からの再生レーザ光の波長において少なくと
も15％にする必要がある。 Specifically, the light reflectance of the dye solid thin film needs to be at least 15% at the wavelength of the reproduction laser beam from the transparent substrate side.
次に、本発明で用いる光学的メモリ媒体の構成
および情報の記録再生法を添付図面を参照して説
明すると、第１図に示すようにバインダーを含ま
ない色素固体薄膜１は透明基板２の上に形成さ
れ、該色素固体薄膜１は透明基板側からの光反射
率が再生レーザ光の波長において15％以上を有す
るものである。レーザ集光ビーム３は模式的に示
したものであり、記録再生が透明基板を通じて行
なわれることを示すものである。また、第２図は
本発明の光学的メモリ媒体の別の働を示すもので
あつて、透明基板にあらかじめ凹み４を形成しそ
の上にバインダーを含まない色素固体薄膜１を形
成すると再生専用の光デイスクとしてまたガイド
トラツク付きの記録再生用光デイスクとしても利
用できる。 Next, the structure of the optical memory medium used in the present invention and the method for recording and reproducing information will be explained with reference to the attached drawings.As shown in FIG. The dye solid thin film 1 has a light reflectance from the transparent substrate side of 15% or more at the wavelength of the reproduction laser beam. The laser condensed beam 3 is shown schematically and indicates that recording and reproduction are performed through a transparent substrate. FIG. 2 shows another function of the optical memory medium of the present invention, in which a recess 4 is formed in advance on a transparent substrate and a dye solid thin film 1 containing no binder is formed thereon. It can be used as an optical disc or as a recording/reproducing optical disc with a guide track.
さらに、第３図の光メモリに示すように、色素
記録層１を密封した構成にできる。こうすると記
録層１は外気と遮断され、ゴミの付着、キズの発
生、有害ガスとの接触から保護できるため保存性
は著しく向上する。透明基板２は基板としての機
能と保護パツケージの機能を有することになり透
明基板２の表面につく多少のゴミやキズは照射ビ
ーム３が大きくなつている（基板の厚みが１mmの
とき照射ビーム径が約１mmとなる）ため悪影響を
及ぼさない。すなわち、第３図に示したものは第
１図に示した構造のものを２個サンドイツチ形態
にしたもので両面が記録層として使用できるので
実用性が高い。 Furthermore, as shown in the optical memory of FIG. 3, the dye recording layer 1 can be sealed. In this way, the recording layer 1 is isolated from the outside air and can be protected from dust, scratches, and contact with harmful gases, thereby significantly improving storage stability. The transparent substrate 2 has the function of a substrate and a protective package, so the irradiation beam 3 is large enough to remove some dust or scratches on the surface of the transparent substrate 2 (when the thickness of the substrate is 1 mm, the irradiation beam diameter is (approximately 1 mm), so there is no adverse effect. That is, the structure shown in FIG. 3 is a two-piece sandwich structure of the structure shown in FIG. 1, and is highly practical because both sides can be used as recording layers.
以下に実施例を掲げて本発明をさらに説明する
が、これに限定されるものではない。 The present invention will be further explained below with reference to Examples, but the present invention is not limited thereto.
実施例 １
構造式
を有するシアニン色素（日本感光色素NK1511）
をジクロルエタンに溶かし、回転塗布機で厚さ１
mmのアクリル基板（三菱レイヨン製アクリライト
AR）に塗布し乾燥したところ、第４図に示すよ
うな分光特性を有する媒体が得られた。この媒体
は633nmの波長において18％、825nmの波長にお
いて37％の反射率を有していた。アクリル基板側
からHe−Neレーザにより記録しHe−Neレーザ
および波長830nmの半導体レーザによる再生が可
能であつた。Example 1 Structural formula Cyanine dye with (Japanese photosensitive dye NK1511)
Dissolve in dichloroethane and coat with a spin coater to a thickness of 1.
mm acrylic substrate (Mitsubishi Rayon Acrylite)
When coated on AR) and dried, a medium with spectral characteristics as shown in Figure 4 was obtained. This medium had a reflectance of 18% at a wavelength of 633 nm and 37% at a wavelength of 825 nm. It was possible to record from the acrylic substrate side with a He--Ne laser and to reproduce it with a He--Ne laser and a semiconductor laser with a wavelength of 830 nm.
実施例 ２
構造式
を有するトリアリルメタン色素（保土谷化学アイ
ゼン・ビクトリア・ブルーBH）をエタノールに
溶かし厚さ１mmのアクリル板に回転塗布機を用い
て塗布、乾燥したところ第５図に示すような分光
特性を示す媒体が得られた。アクリル基板側から
He−Neレーザで記録しHe−Neレーザおよび波
長810nmの半導体レーザで再生可能であつた。Example 2 Structural formula A triallylmethane dye (Hodogaya Chemical Eisen Victoria Blue BH) with A medium was obtained. From the acrylic board side
It was possible to record with a He-Ne laser and reproduce it with a He-Ne laser and a semiconductor laser with a wavelength of 810 nm.
実施例 ３
構造式
を有するシアニン色素（日本感光色素NK1145）
をメタノールに溶解し厚さ１mmのアクリル基板に
回転塗布機を用いて塗布、乾燥したところ第６図
に示すような分光特性を示す媒体が得られた。ア
クリル基板側からHe−Neレーザおよび波長
810nmの半導体レーザで記録再生することができ
た。Example 3 Structural formula Cyanine dye with (Japanese photosensitive dye NK1145)
was dissolved in methanol, coated on an acrylic substrate with a thickness of 1 mm using a spin coater, and dried. A medium exhibiting the spectral characteristics shown in FIG. 6 was obtained. He−Ne laser and wavelength from the acrylic substrate side
Recording and reproduction were possible using an 810nm semiconductor laser.
実施例 ４
構造式
を有するシアニン色素（日本感光色素NK5）を
ジクロルメタンに溶解し厚さ１mmのアクリル基板
に回転塗布機を用いて塗布、乾燥したところ第７
図に示すような分光特性を示す媒体が得られた。
アクリル基板側からHe−Neレーザによつて記録
し、He−Neレーザおよび波長810nmの半導体レ
ーザによる再生が可能であつた。Example 4 Structural formula A cyanine dye (Japanese Photosensitive Dyes NK5) with
A medium exhibiting spectral characteristics as shown in the figure was obtained.
It was possible to record from the acrylic substrate side with a He--Ne laser and to reproduce it with a He--Ne laser and a semiconductor laser with a wavelength of 810 nm.
実施例 ５
構造式
を有するシアニン色素（日本感光色素NK136）
をジクロルエタンに溶解し厚さ１mmのアクリル基
板に回転塗布機を用いて塗布、乾燥したところ第
８図に示すような分光特性を示す媒体が得られ
た。アクリル基板側からHe−Neレーザで記録
し、波長810nmの半導体レーザで再生することが
できた。Example 5 Structural formula Cyanine dye with (Japanese Photosensitive Dye NK136)
was dissolved in dichloroethane, coated on an acrylic substrate with a thickness of 1 mm using a spin coater, and dried. A medium exhibiting the spectral characteristics shown in FIG. 8 was obtained. We were able to record from the acrylic substrate side with a He-Ne laser and reproduce it with a semiconductor laser with a wavelength of 810 nm.
実施例 ６
構造式
を有するシアニン色素（日本感光色素NK1958）
をエタノールに溶解し回転塗布機を用いて厚さ１
mmのアクリル基板に塗布、乾燥したところ第９図
に示すような分光特性を示す媒体が得られた。ア
クリル基板側からHe−Neレーザおよび波長
810nmの半導体レーザで記録し、波長810nmの半
導体レーザで再生することができた。Example 6 Structural formula Cyanine dye with (Japanese photosensitive dye NK1958)
Dissolve it in ethanol and use a spin coater to coat it to a thickness of 1
When the mixture was coated on a 3 mm acrylic substrate and dried, a medium exhibiting spectral characteristics as shown in FIG. 9 was obtained. He−Ne laser and wavelength from the acrylic substrate side
It was possible to record with a semiconductor laser with a wavelength of 810 nm and reproduce it with a semiconductor laser with a wavelength of 810 nm.
上記実施例から明らかなように、本発明の光学
的記録再生方法は、簡便な構成でありながら、記
録層の保護が容易にできると共に再生信号のコン
トラストの高められた情報の記録および再生を行
なうことができるので極めて実用性の高いもので
ある。 As is clear from the above embodiments, the optical recording and reproducing method of the present invention has a simple structure, can easily protect the recording layer, and can record and reproduce information with increased contrast of the reproduced signal. This makes it extremely practical.
添付図面において、第１図は本発明に係る光学
的メモリー媒体を用いた記録、再生の一具体例を
示した断面図、第２図は本発明で用いるメモリー
媒体の別の実施態様を示す拡大断面図、第３図は
第１図に示した本発明で用いるメモリー媒体の二
個をサンドイツチ構造にした実施態様を示す断面
図である。第４図から第９図は実施例１〜６で作
成したメモリー媒体の分光透過率曲線（図中、Ｔ
で示す）および透明基板側からの分光反射率曲線
（図中、Ｒで示す）である。反射率は上から下に
向かつてメモリを付している。
１…色素固体薄膜、２…透明基板、３…レーザ
光、４…サーボトラツク。
In the accompanying drawings, FIG. 1 is a sectional view showing a specific example of recording and reproduction using the optical memory medium according to the present invention, and FIG. 2 is an enlarged view showing another embodiment of the memory medium used in the present invention. 3 is a sectional view showing an embodiment in which two of the memory media used in the present invention shown in FIG. 1 have a sandwich structure. Figures 4 to 9 show spectral transmittance curves of the memory media prepared in Examples 1 to 6 (in the figure, T
) and a spectral reflectance curve from the transparent substrate side (indicated by R in the figure). The reflectance is marked with memory from top to bottom. 1... Dye solid thin film, 2... Transparent substrate, 3... Laser light, 4... Servo track.
Claims (1)
薄膜を有し、かつ該透明基板を通して記録用レー
ザ光および再生用レーザ光を照射することにより
情報の記録再生を行なう反射型光学メモリ媒体に
対して、前記記録及び再生レーザ光を前記透明基
板側から照射するとともに、 再生レーザ光を照射した際の反射型メモリ媒体
による反射率が透明基板による反射率の３倍以上
となるようにしたことを特徴とする光学的記録再
生方法。 ２ 記録時および再生時のレーザ光の波長は色素
固体薄膜の長波長側の光吸収端付近の波長と略一
致することを特徴とする特許請求の範囲第１項記
載の光学的記録再生方法。[Claims] 1. A reflective optical system that has a binder-free dye solid thin film on a transparent substrate and records and reproduces information by irradiating a recording laser beam and a reproduction laser beam through the transparent substrate. The memory medium is irradiated with the recording and reproducing laser beam from the transparent substrate side, and the reflectance of the reflective memory medium when irradiated with the reproducing laser beam is at least three times the reflectance of the transparent substrate. An optical recording and reproducing method characterized by: 2. The optical recording and reproducing method according to claim 1, wherein the wavelength of the laser beam during recording and reproduction substantially coincides with the wavelength near the optical absorption edge on the longer wavelength side of the dye solid thin film.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56201712A JPS58105442A (en) | 1981-12-16 | 1981-12-16 | Optical memory medium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56201712A JPS58105442A (en) | 1981-12-16 | 1981-12-16 | Optical memory medium |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS58105442A JPS58105442A (en) | 1983-06-23 |
| JPH0454299B2 true JPH0454299B2 (en) | 1992-08-31 |
Family
ID=16445673
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP56201712A Granted JPS58105442A (en) | 1981-12-16 | 1981-12-16 | Optical memory medium |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58105442A (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5512416A (en) * | 1982-07-30 | 1996-04-30 | Tdk Corporation | Optical recording medium |
| JPS6036191A (en) * | 1983-08-09 | 1985-02-25 | Tdk Corp | Optical recording medium |
| DE3468893D1 (en) * | 1983-12-01 | 1988-02-25 | Tdk Corp | Photostable cyanine dye and optical recording medium |
| JPS60187948A (en) * | 1984-03-06 | 1985-09-25 | Ricoh Co Ltd | Optical information recording medium |
| JPH0643147B2 (en) * | 1984-08-13 | 1994-06-08 | 株式会社リコー | Optical information recording medium |
| JPS61205187A (en) * | 1985-03-08 | 1986-09-11 | Matsushita Electric Ind Co Ltd | Photo-recording medium and method |
| KR100310223B1 (en) * | 1994-02-28 | 2001-12-28 | 윤종용 | Organic optical recording medium and rewrite prevention method |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5545166A (en) * | 1978-09-25 | 1980-03-29 | Matsushita Electric Ind Co Ltd | Recording and reproducing method for optical information |
| JPS5597033A (en) * | 1979-01-15 | 1980-07-23 | Philips Nv | Optical recording element and method of recording optical information |
| JPS55158131A (en) * | 1979-05-30 | 1980-12-09 | Titan Kogyo Kk | Heat-resistant yellow iron oxide pigment and its manufacture |
| JPS5634938A (en) * | 1979-08-28 | 1981-04-07 | List Hans | Waterrcooled internal combustion engine |
| JPS5697086A (en) * | 1979-12-28 | 1981-08-05 | Shinkou Arufuretsushiyu Kk | Device for mounting new window frame to existing old window frame |
| JPS56116028A (en) * | 1980-02-20 | 1981-09-11 | Ricoh Co Ltd | Photosensitive heat-sensitive type recording member |
| JPS56154842A (en) * | 1980-04-30 | 1981-11-30 | Nec Corp | Transmission system for subsignal |
| JPS5811196A (en) * | 1981-07-14 | 1983-01-21 | Tdk Corp | Beam recording medium |
-
1981
- 1981-12-16 JP JP56201712A patent/JPS58105442A/en active Granted
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5545166A (en) * | 1978-09-25 | 1980-03-29 | Matsushita Electric Ind Co Ltd | Recording and reproducing method for optical information |
| JPS5597033A (en) * | 1979-01-15 | 1980-07-23 | Philips Nv | Optical recording element and method of recording optical information |
| JPS55158131A (en) * | 1979-05-30 | 1980-12-09 | Titan Kogyo Kk | Heat-resistant yellow iron oxide pigment and its manufacture |
| JPS5634938A (en) * | 1979-08-28 | 1981-04-07 | List Hans | Waterrcooled internal combustion engine |
| JPS5697086A (en) * | 1979-12-28 | 1981-08-05 | Shinkou Arufuretsushiyu Kk | Device for mounting new window frame to existing old window frame |
| JPS56116028A (en) * | 1980-02-20 | 1981-09-11 | Ricoh Co Ltd | Photosensitive heat-sensitive type recording member |
| JPS56154842A (en) * | 1980-04-30 | 1981-11-30 | Nec Corp | Transmission system for subsignal |
| JPS5811196A (en) * | 1981-07-14 | 1983-01-21 | Tdk Corp | Beam recording medium |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS58105442A (en) | 1983-06-23 |
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