JPH0610731B2 - Optical recording material - Google Patents
Optical recording materialInfo
- Publication number
- JPH0610731B2 JPH0610731B2 JP61008315A JP831586A JPH0610731B2 JP H0610731 B2 JPH0610731 B2 JP H0610731B2 JP 61008315 A JP61008315 A JP 61008315A JP 831586 A JP831586 A JP 831586A JP H0610731 B2 JPH0610731 B2 JP H0610731B2
- Authority
- JP
- Japan
- Prior art keywords
- recording material
- optical recording
- light
- absorption spectrum
- molecule
- 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 - Fee Related
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
- G11B7/244—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
- G11B7/245—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 a polymeric component
Landscapes
- Non-Silver Salt Photosensitive Materials And Non-Silver Salt Photography (AREA)
- Optical Record Carriers And Manufacture Thereof (AREA)
Description
【発明の詳細な説明】 〔産業上の利用分野〕 この発明は、コンピューター等の大容量情報処理機器の
外部メモリー装置等に用いる高密度光記録材料に関する
ものである。TECHNICAL FIELD The present invention relates to a high-density optical recording material used in an external memory device of a large-capacity information processing device such as a computer.
第７図は例えば、「レーザー研究」第11巻第８号、P548
〜P555に（Ｒ．Ａ．Bartoliniにより）示された従来の
光記録材料および装置を示す断面図であり、図において
(1a)は記録用のレーザー光源、(1b)(1c)はレーザー光、
(3)は対物レンズ、(2)はディスク、(2a)はテルル化合物
等の光記録材料、(2b)はガラス等からなる光記録材料支
持基板である。(4)は、光記録材料に情報として記録さ
れたピット（小穴）である。FIG. 7 shows, for example, “Laser Research”, Vol. 11, No. 8, P548.
~ P555 is a cross-sectional view showing a conventional optical recording material and device shown (by RA Bartolini) in the drawings,
(1a) is a laser light source for recording, (1b) (1c) is a laser light,
(3) is an objective lens, (2) is a disc, (2a) is an optical recording material such as tellurium compound, and (2b) is an optical recording material supporting substrate made of glass or the like. (4) is a pit (small hole) recorded as information on the optical recording material.
次に動作について説明する。情報の記録は、ディスク
(2)を回転させながらレーザー光(1b)を光記録材料(2a)
の面に対物レンズ(3)で集光し、レーザー光を書き込む
べき情報で変調することによって、光記録材料(2a)に熱
的加工によりピット（小穴）(3)をあける形で情報が書
き込まれる。このようにレーザー光による熱加工で書き
込む方式では、情報は、１ピットに１ビットが入るだけ
である。Next, the operation will be described. Information recording on a disc
While rotating (2), laser light (1b) is applied to the optical recording material (2a)
Information is written in the form of pits (small holes) (3) by thermal processing on the optical recording material (2a) by converging the laser light on the surface of the object with the objective lens (3) and modulating it with the information to be written. Be done. As described above, in the method of writing by thermal processing using laser light, only 1 bit is contained in 1 pit of information.
〔発明が解決しようとする問題点〕 従来の光記録材料は以上のように構成されているので、
記録材料の単位面積当りに書き込める情報量は記録材料
の単位面積当りに、ピットを形成できる数できまる。一
般に、現行のレーザー書き込みでは、レーザースポット
の径は約１μｍであり、ピットの径もほぼ１μｍが限界
値であり、１平方センチメートル（１cm2）当りに書き
込めるピットの数、即ち記録容量は108ビット／cm2が限
界値である。[Problems to be Solved by the Invention] Since the conventional optical recording material is configured as described above,
The amount of information that can be written per unit area of the recording material depends on the number of pits that can be formed per unit area of the recording material. In general, current laser writing, the diameter of the laser spot is about 1 [mu] m, approximately 1 [mu] m also the diameter of the pit is a limit value, the number of pits that can be written to per square centimeter (1 cm 2), i.e. the recording capacity of 10 8-bit / Cm 2 is the limit value.
この発明は、記録情報の保存安定化を計ろうとするもの
である。又、この発明の具体的実施例においては、従来
の上記のような問題点を解消し、光記録材料への情報の
書き込みを１スポットに１ビットではなく、１スポット
内に光の波長の次元でも情報を書き込むような多重性を
持たせることにより、単位面積当りの記録容量の限界値
が108ビット／cm2以上にできる光記録材料を得ることを
目的とする。The present invention seeks to stabilize storage of recorded information. Further, in a specific embodiment of the present invention, the above-mentioned conventional problems are solved, and the writing of information on the optical recording material is not performed by 1 bit per spot, but by the dimension of the wavelength of light within 1 spot. However, it is an object of the present invention to obtain an optical recording material capable of limiting the recording capacity per unit area to 10 8 bits / cm 2 or more by providing multiplicity for writing information.
この発明の光記録材料は、固有の光吸収スペクトル波長
域を有するとともに、当該吸収スペクトル波長域の光を
吸収することにより、光の吸収の前後で光吸収スペクト
ル特性が変化する性質を有する分子が、少なくとも１つ
の高分子鎖に結合している記録体を有するものである。The optical recording material of the present invention has a peculiar light absorption spectrum wavelength range, and by absorbing light in the absorption spectrum wavelength range, a molecule having a property of changing light absorption spectrum characteristics before and after absorption of light is obtained. , Having a recording material bound to at least one polymer chain.
又具体的には、上記記録体は、２種類以上であり、互に
異なる光吸収スペクトル波長域を有し、これら記録体を
混合して記録媒体を形成し、２つ以上の光吸収スペクト
ルの波長域でもって、波長次元での多重記録を可能とし
たものである。Further, specifically, the above-mentioned recording materials are two or more kinds and have different light absorption spectrum wavelength ranges from each other, and these recording materials are mixed to form a recording medium. In the wavelength range, multiple recording in the wavelength dimension is possible.
この発明における情報の記録は、光の吸収の前後で光吸
収スペクトル特性が変化する分子を光記録材料として用
いるため、分子の吸収波長域の光を光記録材料に照射す
ることにより、光吸収スペクトル特性の変化を生起させ
ることが出来、この変化の有無を０、１のバイナリーコ
ードの信号として情報を記録することが出来る。In the recording of information in the present invention, a molecule whose light absorption spectrum characteristics change before and after absorption of light is used as an optical recording material. Therefore, by irradiating the optical recording material with light in the absorption wavelength range of the molecule, It is possible to cause a change in characteristics, and it is possible to record information as a binary code signal of 0 or 1 depending on the presence or absence of this change.
そして、上記分子を高分子鎖に結合して記録体を構成し
ているので、記録情報の保存安定化が計られ、温度安定
性も増加する。Further, since the above-mentioned molecule is bonded to the polymer chain to form the recording medium, the storage stability of the recorded information can be achieved and the temperature stability can be increased.
又、光記録材料中に、光吸収の波長域が互いに異なる分
子を少なくとも２種類以上有しているとともに、それら
の各分子を高分子鎖に結合させ固定させると、光を吸収
する異種分子間の相互作用は、それらが高分子鎖に固定
せずに混合した場合に比べ、著しく弱められ、その結
果、各分子は、光記録材料中では、独自の光吸収スペク
トル特性をそのまま維持することが可能となり、各分子
は、それぞれ独自の波長域の光の吸収で光吸収スペクト
ル特性の変化を起こす。即ち、各分子の光吸収スペクト
ルの波長域での情報の記録が可能となり、波長次元での
情報の多重記録が可能となり、これまでの光記録材料の
記録密度の限界値108ビット／cm2を越えることが出来
る。Further, the optical recording material has at least two kinds of molecules having different light absorption wavelength ranges from each other. Interactions are significantly weakened compared to when they are mixed without being fixed to the polymer chain, and as a result, each molecule can maintain its own optical absorption spectrum characteristics in the optical recording material. It becomes possible, and each molecule causes a change in the optical absorption spectrum characteristic by absorbing light in its own wavelength range. That is, it becomes possible to record information in the wavelength region of the light absorption spectrum of each molecule, and multiple recording of information in the wavelength dimension becomes possible, and the recording density limit of the conventional optical recording material is 10 8 bits / cm 2 Can be exceeded.
なお、光記録材料中の光を吸収して、記録を行う分子
は、少なくとも１つ以上の高分子鎖に結合されていなけ
ればならないが、２から３つの高分子鎖に結合されてい
れば、異種分子団間の相互作用がなお一層弱められ、よ
り好ましい。It should be noted that the molecule that absorbs light in the optical recording material and performs recording must be bound to at least one or more polymer chains, but if it is bound to 2 to 3 polymer chains, The interaction between different molecular groups is further weakened, which is more preferable.
以下、この発明の実施例を図について説明する。第１図
において、(1a)は波長可変のレーザー光源、(1b)は(1a)
より発せられたレーザー光、(1c)は、対物レンズ(3)に
より集光されたレーザ光、(2a)は光記録材料、(2b)は基
板、である。Embodiments of the present invention will be described below with reference to the drawings. In FIG. 1, (1a) is a tunable laser light source, (1b) is (1a)
Laser light emitted from the laser beam, (1c) laser light focused by the objective lens (3), (2a) optical recording material, and (2b) substrate.
第２図は、この発明の光記録材料の分子モデルの１例を
示した概念図であり、それぞれ、(5)は、光を吸収する
分子(D1)が１つの高分子鎖(P1)に結合固定された場合、
(6)は、分子団(D2)が２つの高分子鎖(P2-1とP2-2)に結
合固定された場合、(7)は分子団(D3)が、３つの高分子
鎖(P3-1、P3-2、P3-3)に結合固定された場合のものであ
る。FIG. 2 is a conceptual diagram showing an example of a molecular model of the optical recording material of the present invention. In each of (5), a polymer chain (P 1 having one light absorbing molecule (D 1 ) is shown. ), When fixed to
(6) shows that when the molecular group (D 2 ) is bound and fixed to two polymer chains (P 2-1 and P 2-2 ), (7) shows that the molecular group (D 3 ) has three high groups. It is a case where it is bound and fixed to a molecular chain (P 3-1 , P 3-2 , P 3-3 ).
なお、光を吸収する分子と高分子鎖との結合は、縮合反
応等の一般的な化学結合反応を起こしうる官能基ペアー
を、それぞれ、光を吸収する分子と高分子鎖との双方に
付与することにより、一般的技術で行うことが可能であ
る。The bond between the light-absorbing molecule and the polymer chain is provided with a functional group pair capable of causing a general chemical bonding reaction such as a condensation reaction to both the light-absorbing molecule and the polymer chain. By doing so, it is possible to carry out with a general technique.
実施例１、 光記録材料(2a)として、光の吸収の前後で、光の吸収ス
ペクトルの吸収ピーク位置がシフトする、いわゆるフォ
トクロミズム化合物を分子(D)として用いた例を示す。Example 1 As an optical recording material (2a), an example in which a so-called photochromic compound in which the absorption peak position of the absorption spectrum of light shifts before and after absorption of light is used as a molecule (D) is shown.
フォトクロミズム化合物としてD4,D5,D6の３種類を用
い、それらを第２図の(6)の方式で、それぞれを個別に
２つの高分子鎖に結合固定させる。このとき用いる高分
子鎖としては、D4,D5,D6に対して同種類でも異種類でも
よいが、この例では、D4,D5,D6のそれぞれを個別に、同
種類のメタアクリルアミドポリマーの２つに結合固定さ
せている。D4を結合固定したメタアクリルアミドポリマ
ーと、D5を結合固定したメタアクリルアミドポリマー
と、D6を結合固定したメタアクリルアミドポリマーを溶
剤に溶かしたり、溶融させて混合し、これを基板に塗布
乾燥させて記録媒体を形成する。Three types of photochromic compounds, D 4 , D 5 , and D 6 , are used, and these are individually bonded and fixed to two polymer chains by the method of (6) in FIG. The polymer chain used at this time may be the same kind or different kinds with respect to D 4 , D 5 , and D 6 , but in this example, each of D 4 , D 5 , and D 6 is individually and same kind. It is bonded and fixed to two of the methacrylamide polymers. The methacrylamide polymer with D 4 bound and fixed, the methacrylamide polymer with D 5 bound and fixed, and the methacrylamide polymer with D 6 bound and fixed were dissolved in a solvent or melted and mixed, and this was applied to a substrate and dried. To form a recording medium.
なお、D4,D5,D6の光吸収スペクトルの吸収波長域は、そ
れぞれA4,A5,A6にピークを持ち、これを第３図のスペク
トル図に示す。又、それらは、それぞれの吸収域の光を
吸収することにより、A4-1,A5-1,A6-1とスペクトルのピ
ーク位置がシフトする。The absorption wavelength regions of the light absorption spectra of D 4 , D 5 , and D 6 have peaks at A 4 , A 5 , and A 6 , respectively, which are shown in the spectrum diagram of FIG. Further, they absorb the light in their respective absorption regions, whereby the peak positions of the spectrum shift to A 4-1 , A 5-1 and A 6-1 .
今この光記録材料にA4とA6の光を照射すれば、光記録材
料全体の吸収スペクトル特性は第４図のようになり、A4
とA6の吸収ピークが消失する。この吸収ピークの有無を
０，１のバイナリーコードとすれば、（１，０，１）の
波長次元の多重光記録が行なわれる。Is irradiated with light of A 4 and A 6 now the optical recording material, the absorption spectrum characteristic of the entire optical recording material is as shown in FIG. 4, A 4
And the absorption peaks of A 6 disappear. If the presence / absence of this absorption peak is a binary code of 0, 1, multiplex optical recording with a wavelength dimension of (1, 0, 1) is performed.
なお、光記録材料(2a)として用いた、ホトクロミズム化
合物としては、スピロピラン類、フルギド類、アゾベン
ゼン類、および、Ru錯体やＨｇ錯体の錯体類を始めとし
他の全てのホトクロミズム材料が用いられる。As the photochromic compound used as the optical recording material (2a), spiropyrans, fulgides, azobenzenes, and all other photochromic materials including Ru complexes and Hg complex complexes can be used. .
実施例２、 光記録材料(2a)中の記録体として用いられる分子として
は光の吸収により、吸収した波長部分の吸収のみが、光
吸収前の吸収スペクトルより欠除させられる、いわゆる
ホールバーニング現象を示す分子（PHB分子：ホトケミ
カルホールバーニング分子）を用いた例を示す。Example 2, a so-called hole burning phenomenon, in which the molecules used as a recording medium in the optical recording material (2a) are absorbed by light and only the absorption of the absorbed wavelength portion is excluded from the absorption spectrum before light absorption. An example using a molecule (PHB molecule: photochemical hole burning molecule) is shown.
PHB分子であるポルフィリンD7，D8の２種類を用い、こ
れらを第２図の(6)の方式で、それぞれを個別に２つの
高分子鎖であるメタアクリルアミドポリマーに結合固定
させる。なおD7,D8の光吸収スペクトルの吸収波長域
は、それぞれA7,A8にピークを持つ、これを第５図のス
ペクトル図に示される。Two kinds of PHB molecules, porphyrin D 7 and D 8 , are used, and these are individually bonded and fixed to two methacrylamide polymers, which are two polymer chains, by the method of (6) in FIG. The absorption wavelength regions of the optical absorption spectra of D 7 and D 8 have peaks at A 7 and A 8 , respectively, which is shown in the spectrum diagram of FIG.
今この光記録材料に、例えばA7-1,A7-2,A8-1,A8-2,A8-3
の５つの波長のレーザ光を照射すれば、それらの波長部
での吸収が欠除した第６図のスペクトルが得られ、吸収
の欠除部が１で、他の部分が０で表わされる（０，０，
…，１，０，…，１，…，０，１，…，０，…，１，
０，…，０，１，…，０）の光波長次元での情報が多重
記録される。PHB材料を用いた光記録材料では、１つのP
HB分子に1000個程度の情報が波長次元で多重記録され
る。そのため、複数種類のPHB分子を用いるとそれら
が、さらに2,000〜10,000倍程度にまでも波長次元で多
重記録が可能となる。また、ホスト材料となる高分子鎖
を、光を吸収する分子により、架橋すると材料系の熱運
動が抑えられ、PHB反応による光記録の高温化をも可能
とする。Now, in this optical recording material, for example, A 7-1 , A 7-2 , A 8-1 , A 8-2 , A 8-3
By irradiating the laser light of the five wavelengths of, the spectrum of FIG. 6 in which the absorption in those wavelength portions is absent is obtained, and the absorption absent portion is represented by 1 and the other portions are represented by 0 ( 0, 0,
..., 1,0, ..., 1, ..., 0,1, ..., 0, ..., 1,
Information in the optical wavelength dimension of 0, ..., 0, 1, ..., 0) is multiplexed and recorded. In the optical recording material using PHB material, one P
About 1000 pieces of information are multiplexed and recorded in the HB molecule in the wavelength dimension. Therefore, if multiple types of PHB molecules are used, they can be multiplexed in the wavelength dimension up to about 2,000 to 10,000 times. In addition, cross-linking a polymer chain that is a host material with a molecule that absorbs light suppresses thermal motion of the material system, and enables high temperature optical recording by PHB reaction.
ここで、ホールバーニング現象を示す分子としては、ク
ロリン類、ポルフィリン類、フタロシアニン類、キニザ
リン類、アミノアクリジン類、ペリレン類等を始めとし
他の全てのホールバーニング現象を示す材料が用いられ
る。Here, as the molecule exhibiting the hole-burning phenomenon, chlorins, porphyrins, phthalocyanines, quinizarines, aminoacridines, perylenes, and all other materials exhibiting the hole-burning phenomenon are used.
なお、これらの記録体としての分子を結合させる高分子
鎖をもつ高分子としては、メタアクリル系高分子、ポリ
カーボネイト系高分子およびポリアミド系高分子等を始
とする他の一般の高分子が用いられる。As the polymer having a polymer chain for binding molecules as these recording bodies, other general polymers such as methacrylic polymer, polycarbonate polymer and polyamide polymer are used. To be
以上のようにこの発明の光記録材料は、固有の光吸収ス
ペクトル波長域を有するとともに、当該吸収スペクトル
波長域の光を吸収することにより、光の吸収の前後で光
吸収スペクトル特性が変化する性質を有する分子が、少
なくとも１つの高分子鎖に結合している記録体を有する
ものであるので、高分子鎖に結合していないものに比
べ、記録情報の保存安定化が計られ、温度安定性も増
す。As described above, the optical recording material of the present invention has a peculiar optical absorption spectrum wavelength range, and by absorbing light in the absorption spectrum wavelength range, the optical absorption spectrum characteristics change before and after absorption of light. Since the molecule having is a molecule having a recording material bound to at least one polymer chain, the storage stability of recorded information can be improved and the temperature stability can be improved as compared with a molecule not bound to a polymer chain. Also increases.
又、具体的に上記記録体は、２種類以上であり、互に異
なる光吸収スペクトル波長域を有し、これら記録体を混
合して記録媒体を形成し、２つ以上の光吸収スペクトル
の波長域でもって、波長次元での多重記録を可能とした
ものであれば、高分子鎖に結合固定された分子は、異種
類間での相互作用が抑制され、したがって光記録の波長
次元での安定した多重記録が可能となり、108ビット／c
m2以上の記録容量が可能となる。In addition, specifically, the above-mentioned recording materials are two or more kinds, and have different light absorption spectrum wavelength ranges from each other, and these recording materials are mixed to form a recording medium. As long as it is possible to perform multiple recording in the wavelength dimension in the region, the molecules fixed to the polymer chain are suppressed from interacting with different types, and therefore stable in the wavelength dimension of optical recording. Multiple recording is possible and 10 8 bits / c
A recording capacity of m 2 or more is possible.
第１図は、この発明の一実施例の光記録材料を用いた光
記録装置を示す構成図、第２図は、この発明の光記録材
料の分子モデルの１例を示す概念図、第３図は、この発
明の一実施例の光記録材料の吸収スペクトル特性を示す
特性図、第４図は、第３図に示された光記録材料に、情
報の記録を行った後の光記録材料の吸収スペクトル特性
の１例を示す特性図、第５図は、この発明の他の実施例
の光記録材料の吸収スペクトル特性を示す特性図、第６
図は、第５図に示された光記録材料に、情報の記録を行
った後の光記録材料の吸収スペクトル特性の１例を示す
特性図、第７図は、従来の、光記録装置を示す構成図で
ある。 図において、(1a)はレーザー光源、(1b)はレーザー光、
(1c)はレーザー光(1b)のビーム径がしぼられたレーザー
光、(2)はディスク、(2a)は光記録材料、(2b)は基板、
(3)は対物レンズ、(4)はピットである。 なお、図中、同一符号は同一、又は相当部分を示す。FIG. 1 is a block diagram showing an optical recording device using the optical recording material of one embodiment of the present invention, and FIG. 2 is a conceptual diagram showing an example of a molecular model of the optical recording material of the present invention. FIG. 4 is a characteristic diagram showing absorption spectrum characteristics of the optical recording material of one embodiment of the present invention, and FIG. 4 is an optical recording material after recording information on the optical recording material shown in FIG. FIG. 5 is a characteristic diagram showing an example of absorption spectrum characteristic of the above, FIG. 5 is a characteristic diagram showing absorption spectrum characteristic of an optical recording material of another embodiment of the present invention, FIG.
FIG. 7 is a characteristic diagram showing an example of absorption spectrum characteristics of the optical recording material after recording information on the optical recording material shown in FIG. 5, and FIG. 7 shows a conventional optical recording device. It is a block diagram shown. In the figure, (1a) is a laser light source, (1b) is a laser light,
(1c) is a laser beam in which the beam diameter of the laser beam (1b) is narrowed, (2) is a disk, (2a) is an optical recording material, (2b) is a substrate,
(3) is an objective lens, and (4) is a pit. In the drawings, the same reference numerals indicate the same or corresponding parts.
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 昭57−136645（ＪＰ，Ａ) 特開 昭59−215382（ＪＰ，Ａ) 特開 昭48−3915（ＪＰ，Ａ) 特開 昭59−227972（ＪＰ，Ａ) 特開 昭60−188405（ＪＰ，Ａ) 特開 昭60−229025（ＪＰ，Ａ) 特開 昭59−62188（ＪＰ，Ａ) 特開 昭61−232447（ＪＰ，Ａ) 特公 昭49−30447（ＪＰ，Ｂ２) ─────────────────────────────────────────────────── ─── Continuation of the front page (56) Reference JP-A-57-136645 (JP, A) JP-A-59-215382 (JP, A) JP-A-48-3915 (JP, A) JP-A-59- 227972 (JP, A) JP 60-188405 (JP, A) JP 60-229025 (JP, A) JP 59-62188 (JP, A) JP 61-232447 (JP, A) Japanese Patent Publication Sho 49-30447 (JP, B2)
Claims (1)
域を有して当該吸収スペクトル波長域の光を吸収するこ
とにより光吸収の前後で光吸収スペクトル特性が変化す
る性質を有する分子を２種以上含み、かつこれら２種以
上の分子が少なくとも１つの高分子鎖に結合した記録体
を有する、波長次元での多重記録が可能な光記録材料。1. Two or more kinds of molecules having different light absorption spectrum wavelength ranges from each other and absorbing light in the absorption spectrum wavelength range to change the light absorption spectrum characteristics before and after the light absorption. An optical recording material containing a recording material containing two or more kinds of molecules bound to at least one polymer chain and capable of multiple recording in the wavelength dimension.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61008315A JPH0610731B2 (en) | 1986-01-17 | 1986-01-17 | Optical recording material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61008315A JPH0610731B2 (en) | 1986-01-17 | 1986-01-17 | Optical recording material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62165649A JPS62165649A (en) | 1987-07-22 |
| JPH0610731B2 true JPH0610731B2 (en) | 1994-02-09 |
Family
ID=11689720
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61008315A Expired - Fee Related JPH0610731B2 (en) | 1986-01-17 | 1986-01-17 | Optical recording material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0610731B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3732469B2 (en) | 2002-09-04 | 2006-01-05 | 独立行政法人産業技術総合研究所 | Optical recording medium, manufacturing method thereof, and optical recording method |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5443552B2 (en) * | 1972-03-01 | 1979-12-20 | ||
| JPS57136645A (en) * | 1981-02-18 | 1982-08-23 | Sony Corp | Photochromic light sensitive composition |
| JPS5962188A (en) * | 1982-10-02 | 1984-04-09 | Tdk Corp | Optical recording medium |
| JPS59215382A (en) * | 1983-05-20 | 1984-12-05 | Sony Corp | Photosensitive material |
| JPS59227972A (en) * | 1983-06-09 | 1984-12-21 | Sony Corp | Photochromic photosensitive material |
| JPS60188405A (en) * | 1984-03-08 | 1985-09-25 | Nippon Telegr & Teleph Corp <Ntt> | Polymer containing photoisomerizable atomic group, and its use |
| JPS60229025A (en) * | 1984-04-27 | 1985-11-14 | Mitsubishi Chem Ind Ltd | Reversible recording material |
| US4728724A (en) * | 1985-04-08 | 1988-03-01 | Hoechst Celanese Corporation | Optical data storage medium comprising a chromophore/polymer information layer |
-
1986
- 1986-01-17 JP JP61008315A patent/JPH0610731B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPS62165649A (en) | 1987-07-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US8576681B2 (en) | Optical information recording medium, optical information recording apparatus and optical information recording method | |
| JPH0246538A (en) | Optical memory element | |
| JP2002334436A (en) | Optical recording medium and optical recording method | |
| US5011756A (en) | Storage of optical information using photochiroptical effect | |
| US20060013115A1 (en) | Multi-stack optical information carrier | |
| JPH0610731B2 (en) | Optical recording material | |
| US6521317B2 (en) | Optical recording medium | |
| US5032973A (en) | Optical recording material containing photochromic compounds | |
| JP2001184649A (en) | Optical recording system and optical recording medium | |
| JPH03120625A (en) | Information recording and reproducing device | |
| JPH10151854A (en) | Optical recording medium | |
| JPH05169820A (en) | Rewriting type photochromic optical disk | |
| JP2010514075A (en) | Optical recording medium and respective device for recording and / or reading data | |
| JPH02278519A (en) | Recording method for optical recording medium | |
| JPH04358331A (en) | Optical information recording medium | |
| JPH03200957A (en) | Rewritable photochromic optical disk | |
| JPH0473188A (en) | Compact disk and additional recording type optical disk responsive to compact disk-rom | |
| JP2001184648A (en) | Optical recording method and optical recording medium | |
| JPH07287870A (en) | Optical recording medium | |
| JPS63303793A (en) | Optical recorder medium | |
| JP4591790B2 (en) | Information recording layer of optical disc and optical disc | |
| JPH02215588A (en) | Optical recording medium | |
| JPS6278725A (en) | Optical recording device | |
| JPS60204394A (en) | Information-recording medium | |
| JP2001093187A (en) | Optical recording medium |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |