JPS62239436A - Optical recording medium - Google Patents
Optical recording mediumInfo
- Publication number
- JPS62239436A JPS62239436A JP61082272A JP8227286A JPS62239436A JP S62239436 A JPS62239436 A JP S62239436A JP 61082272 A JP61082272 A JP 61082272A JP 8227286 A JP8227286 A JP 8227286A JP S62239436 A JPS62239436 A JP S62239436A
- Authority
- JP
- Japan
- Prior art keywords
- recording
- laser beam
- compd
- layer
- recording layer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
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- 229910021538 borax Inorganic materials 0.000 description 1
- JHIWVOJDXOSYLW-UHFFFAOYSA-N butyl 2,2-difluorocyclopropane-1-carboxylate Chemical compound CCCCOC(=O)C1CC1(F)F JHIWVOJDXOSYLW-UHFFFAOYSA-N 0.000 description 1
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- KADXVMUKRHQBGS-UHFFFAOYSA-L cadmium(2+);tetradecanoate Chemical compound [Cd+2].CCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCC([O-])=O KADXVMUKRHQBGS-UHFFFAOYSA-L 0.000 description 1
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- 239000004204 candelilla wax Substances 0.000 description 1
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- 238000004040 coloring Methods 0.000 description 1
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- 238000007766 curtain coating Methods 0.000 description 1
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- 238000003618 dip coating Methods 0.000 description 1
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- 239000000982 direct dye Substances 0.000 description 1
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- 238000001035 drying Methods 0.000 description 1
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- 239000003822 epoxy resin Substances 0.000 description 1
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- 229930195733 hydrocarbon Natural products 0.000 description 1
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- 239000011147 inorganic material Substances 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 235000019388 lanolin Nutrition 0.000 description 1
- 229940039717 lanolin Drugs 0.000 description 1
- 150000002611 lead compounds Chemical class 0.000 description 1
- YJOMWQQKPKLUBO-UHFFFAOYSA-L lead(2+);phthalate Chemical compound [Pb+2].[O-]C(=O)C1=CC=CC=C1C([O-])=O YJOMWQQKPKLUBO-UHFFFAOYSA-L 0.000 description 1
- VZCYOOQTPOCHFL-UPHRSURJSA-N maleic acid Chemical compound OC(=O)\C=C/C(O)=O VZCYOOQTPOCHFL-UPHRSURJSA-N 0.000 description 1
- 239000011976 maleic acid Substances 0.000 description 1
- FPYJFEHAWHCUMM-UHFFFAOYSA-N maleic anhydride Chemical compound O=C1OC(=O)C=C1 FPYJFEHAWHCUMM-UHFFFAOYSA-N 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000002844 melting Methods 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
- 229920000609 methyl cellulose Polymers 0.000 description 1
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 1
- 239000001923 methylcellulose Substances 0.000 description 1
- 235000010981 methylcellulose Nutrition 0.000 description 1
- 239000004200 microcrystalline wax Substances 0.000 description 1
- 235000019808 microcrystalline wax Nutrition 0.000 description 1
- 239000002480 mineral oil Substances 0.000 description 1
- 239000012046 mixed solvent Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000012170 montan wax Substances 0.000 description 1
- 239000000983 mordant dye Substances 0.000 description 1
- 229940105132 myristate Drugs 0.000 description 1
- WQEPLUUGTLDZJY-UHFFFAOYSA-N n-Pentadecanoic acid Natural products CCCCCCCCCCCCCCC(O)=O WQEPLUUGTLDZJY-UHFFFAOYSA-N 0.000 description 1
- 150000002791 naphthoquinones Chemical class 0.000 description 1
- 229920003052 natural elastomer Polymers 0.000 description 1
- 229920001194 natural rubber Polymers 0.000 description 1
- 229910017604 nitric acid Inorganic materials 0.000 description 1
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 description 1
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 description 1
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 description 1
- WTBAHSZERDXKKZ-UHFFFAOYSA-N octadecanoyl chloride Chemical compound CCCCCCCCCCCCCCCCCC(Cl)=O WTBAHSZERDXKKZ-UHFFFAOYSA-N 0.000 description 1
- FATBGEAMYMYZAF-KTKRTIGZSA-N oleamide Chemical compound CCCCCCCC\C=C/CCCCCCCC(N)=O FATBGEAMYMYZAF-KTKRTIGZSA-N 0.000 description 1
- 229940113162 oleylamide Drugs 0.000 description 1
- 238000001579 optical reflectometry Methods 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 150000002923 oximes Chemical class 0.000 description 1
- 239000000123 paper Substances 0.000 description 1
- 239000012188 paraffin wax Substances 0.000 description 1
- 150000002978 peroxides Chemical class 0.000 description 1
- 239000012169 petroleum derived wax Substances 0.000 description 1
- 235000019381 petroleum wax Nutrition 0.000 description 1
- 229920001568 phenolic resin Polymers 0.000 description 1
- 239000005011 phenolic resin Substances 0.000 description 1
- 239000010452 phosphate Substances 0.000 description 1
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 1
- OJMIONKXNSYLSR-UHFFFAOYSA-N phosphorous acid Chemical class OP(O)O OJMIONKXNSYLSR-UHFFFAOYSA-N 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 229920001485 poly(butyl acrylate) polymer Polymers 0.000 description 1
- 229920001084 poly(chloroprene) Polymers 0.000 description 1
- 229920002037 poly(vinyl butyral) polymer Polymers 0.000 description 1
- 229920002401 polyacrylamide Polymers 0.000 description 1
- 239000004584 polyacrylic acid Substances 0.000 description 1
- 229920002239 polyacrylonitrile Polymers 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 229920001230 polyarylate Polymers 0.000 description 1
- 229920001083 polybutene Polymers 0.000 description 1
- 239000004417 polycarbonate Substances 0.000 description 1
- 229920000515 polycarbonate Polymers 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229920001721 polyimide Polymers 0.000 description 1
- 229920000098 polyolefin Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 229920002689 polyvinyl acetate Polymers 0.000 description 1
- 239000011118 polyvinyl acetate Substances 0.000 description 1
- 229920002451 polyvinyl alcohol Polymers 0.000 description 1
- 229920000915 polyvinyl chloride Polymers 0.000 description 1
- 239000004800 polyvinyl chloride Substances 0.000 description 1
- 229920000036 polyvinylpyrrolidone Polymers 0.000 description 1
- 239000001267 polyvinylpyrrolidone Substances 0.000 description 1
- 235000013855 polyvinylpyrrolidone Nutrition 0.000 description 1
- 125000001436 propyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 210000001747 pupil Anatomy 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 150000003254 radicals Chemical class 0.000 description 1
- 238000002310 reflectometry Methods 0.000 description 1
- 238000007761 roller coating Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000004328 sodium tetraborate Substances 0.000 description 1
- 235000010339 sodium tetraborate Nutrition 0.000 description 1
- LUPNKHXLFSSUGS-UHFFFAOYSA-M sodium;2,2-dichloroacetate Chemical compound [Na+].[O-]C(=O)C(Cl)Cl LUPNKHXLFSSUGS-UHFFFAOYSA-M 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
- 235000019385 spermaceti wax Nutrition 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000004544 sputter deposition Methods 0.000 description 1
- 239000008117 stearic acid Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000005720 sucrose Substances 0.000 description 1
- 150000005846 sugar alcohols Polymers 0.000 description 1
- 150000003460 sulfonic acids Chemical class 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 239000000988 sulfur dye Substances 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
- 229910052714 tellurium Inorganic materials 0.000 description 1
- PORWMNRCUJJQNO-UHFFFAOYSA-N tellurium atom Chemical compound [Te] PORWMNRCUJJQNO-UHFFFAOYSA-N 0.000 description 1
- KKEYFWRCBNTPAC-UHFFFAOYSA-L terephthalate(2-) Chemical compound [O-]C(=O)C1=CC=C(C([O-])=O)C=C1 KKEYFWRCBNTPAC-UHFFFAOYSA-L 0.000 description 1
- TUNFSRHWOTWDNC-UHFFFAOYSA-N tetradecanoic acid Chemical compound CCCCCCCCCCCCCC(O)=O TUNFSRHWOTWDNC-UHFFFAOYSA-N 0.000 description 1
- TUNFSRHWOTWDNC-HKGQFRNVSA-N tetradecanoic acid Chemical compound CCCCCCCCCCCCC[14C](O)=O TUNFSRHWOTWDNC-HKGQFRNVSA-N 0.000 description 1
- 150000003573 thiols Chemical class 0.000 description 1
- 239000012780 transparent material Substances 0.000 description 1
- UBOXGVDOUJQMTN-UHFFFAOYSA-N trichloroethylene Natural products ClCC(Cl)Cl UBOXGVDOUJQMTN-UHFFFAOYSA-N 0.000 description 1
- 238000007738 vacuum evaporation Methods 0.000 description 1
- 238000007740 vapor deposition Methods 0.000 description 1
- 235000015112 vegetable and seed oil Nutrition 0.000 description 1
- 239000008158 vegetable oil Substances 0.000 description 1
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 1
- KAKZBPTYRLMSJV-UHFFFAOYSA-N vinyl-ethylene Natural products C=CC=C KAKZBPTYRLMSJV-UHFFFAOYSA-N 0.000 description 1
- 229940075420 xanthine Drugs 0.000 description 1
- 239000008096 xylene Substances 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
- 150000003752 zinc compounds Chemical class 0.000 description 1
- CHJMFFKHPHCQIJ-UHFFFAOYSA-L zinc;octanoate Chemical compound [Zn+2].CCCCCCCC([O-])=O.CCCCCCCC([O-])=O CHJMFFKHPHCQIJ-UHFFFAOYSA-L 0.000 description 1
Landscapes
- Optical Record Carriers And Manufacture Thereof (AREA)
Abstract
Description
【発明の詳細な説明】
［産業上の利用分野］
本発明は、レーザー等により光熱変換効果を利用して情
報を高密度に記録し、これを１１生する光学的記録媒体
に関し、詳しくはレーザー等の可視および近赤外域の波
長の光を効果的に吸収し、熱的エネルギーに変換し、［
Ｌつ低エネルギーのレーザーにより高密度の記録および
光学的再生が可能な光学的記録媒体に関するものである
。Detailed Description of the Invention [Industrial Field of Application] The present invention relates to an optical recording medium that records information at high density using a photothermal conversion effect using a laser or the like. It effectively absorbs light in the visible and near-infrared wavelength range, converts it into thermal energy, and [
The present invention relates to an optical recording medium capable of high-density recording and optical reproduction using a low-energy laser.
［従来の技術］ 光デイスク技術で用いる光熱変換記録媒体は。[Conventional technology] What is the photothermal conversion recording medium used in optical disk technology?
ノ、（体１−に設けたにしい光熱変換記録層に形成され
た光学的に検出ＩＩｆ能な小さな（例えば約１ｇ）ピン
トをらせん状又は円形のトランク形態にして高密度情報
を記録することができる。この様なディスクに情報を、
１；き込むにはレーザー感応層の表面に集東したレーザ
ーを走査し、このレーザー光線が照射された表面のみが
ピットを形成し、このピットをらせん状又は円形トラン
クの形ｊ！＋で形成する。レーザー感応層はレーザー・
エネルギーを吸収して光学的に検出＋ｉ）能なピットを
形成できる。(2) (Recording high-density information by forming an optically detectable small (e.g., about 1 g) focal point formed in a new photothermal conversion recording layer provided on the body 1 into a spiral or circular trunk form; You can store information on such a disk,
1; To infiltrate, a laser focused on the surface of the laser sensitive layer is scanned, and only the surface irradiated with this laser beam forms pits, and these pits are formed into a spiral or circular trunk shape. Form with +. The laser sensitive layer
It is possible to absorb energy and form pits that can be optically detected.
例えばヒートモード記録方式では、レーザー感応層に照
射されたレーザー・エネルギーを吸収し、熱的エネルギ
ーに変換され、その個所に蒸発または変形により小さな
門？１１（ピット）を形成できるか、あるいはその個所
に光学的に検出ｒｒ（能な化学変化によって生じる酸化
度差、反射−（に差、またはＣ度差を右するピットを形
成できる。For example, in the heat mode recording method, the laser energy irradiated to the laser sensitive layer is absorbed, converted into thermal energy, and a small gate is formed at that point by evaporation or deformation. 11 (pits) can be formed, or pits can be formed at the locations that reflect oxidation degree differences, reflection differences, or C degree differences caused by chemical changes that can be optically detected.
この光ディスクに記録された情報は、レーザーをトラン
クに沿って走査し、ピントが形成された部分とピントが
形成されていない部分の光学的変化を読み取ることによ
って検出される。例えば。Information recorded on this optical disc is detected by scanning a laser along the trunk and reading optical changes in focused and unfocused areas. for example.
レーザーがトラックに沿って走査され、ディスクにより
反射されたエネルギーがフォトディテクターによってモ
ニターされる。ピットが形成されていない時、フォトデ
ィテクターの出力は低下し、一方ピットが形成されてい
る時はレーザー光線は下層の反射面によって充分に反射
されフォトディテクターの出力は大きくなる。A laser is scanned along the track and the energy reflected by the disk is monitored by a photodetector. When no pits are formed, the output of the photodetector decreases, while when pits are formed, the laser beam is sufficiently reflected by the underlying reflective surface and the output of the photodetector increases.
この様な光ディスクに用いる記録媒体として、これまで
アルミニウム蒸着膜などの金属薄膜、ビスマス薄１１１
２、酸化テルル薄膜やカルコゲナイド系非晶質ガラス膜
などの無機物質を主に用いたものが提案されているが、
これらの薄膜は塗工法によって形成されることが難かし
く、一般にスパッタリングや真空蒸着法により形成され
、そのために高価であり、またレーザー光に対する反射
率が高いことおよび熱伝導率が大きく、しかもレーザー
光の利用率が低いなどの欠点を有している。As recording media used for such optical discs, metal thin films such as aluminum evaporated films, bismuth thin 111
2. Methods mainly using inorganic materials such as tellurium oxide thin films and chalcogenide amorphous glass films have been proposed;
These thin films are difficult to form by coating methods, and are generally formed by sputtering or vacuum evaporation, which makes them expensive, and they also have high reflectance and thermal conductivity to laser light, and they are also difficult to form using coating methods. It has disadvantages such as low utilization rate.
ところで、近年レーザーとして小型でしかも低コストの
１−１直接変調がｉｌｌ能な゛ｈ導体レーザーが開発さ
れているが、このレーザーの発振波長が７０Ｏｎ１１以
にの波長を有していることが多く、また、一般にアルゴ
ンレーザー、ヘリウム−ネオンレーザ−などのガスレー
ザーに較べ、レーザー光パワーが小さい。従ってこの様
な半導体レーザーを用いて光熱変換記録を行なう場合に
は、レーザー感応層の吸収特性は長波長側に吸収ピーク
（一般に７００ｎｍ〜８５０ｎｍの領域）を有すること
が有効である。Incidentally, in recent years, compact and low-cost conductor lasers capable of 1-1 direct modulation have been developed, but the oscillation wavelength of these lasers often has a wavelength of 70On11 or more. In addition, the laser light power is generally lower than that of gas lasers such as argon lasers and helium-neon lasers. Therefore, when performing photothermal conversion recording using such a semiconductor laser, it is effective that the absorption characteristic of the laser sensitive layer has an absorption peak on the long wavelength side (generally in the region of 700 nm to 850 nm).
しかし、従来の光熱変換記録媒体は、レーザー光を吸収
し熱エネルギーに変換する効率が部分なものでなく１例
えば光ディスクの場合、前記のような無機物質を主成分
として形成した光熱変換記録層は、レーザー光に対する
反射率が高いため。However, conventional photothermal conversion recording media have limited efficiency in absorbing laser light and converting it into thermal energy. For example, in the case of an optical disk, the photothermal conversion recording layer formed mainly of an inorganic substance as described above is , due to its high reflectance to laser light.
レーザーの利用−（ぺが低くなり高感度特性が得られな
い欠点を有しており、しかも感応波長域を７００ｎｍ以
」二とすることはレーザー感応層の層構成をＮ剛化する
欠点を有ている。この様なことから近年ＬｔＩ咬的長波
長域の光エネルギーで物質変化（１ｒ能な有機化合物の
研究かなされている。例えは、米国特頷第１１”１１５
９８：１号、「リサーチ ディスクロウサー （Ｒｅｓ
Ｃａｃｌ＋ Ｄｉｓｃｌｏｓｕｒｅ） Ｊ ２０５１
７（１９８１，５Ｈこ開示のピリリウム染料や「シー＼
・−ナルバキ、Ｌ−ム サイエンティフィック テクノ
ロジー（Ｊ、 Ｖａｃ、Ｓｃ１． ＴｅｃｌｌＤｏｌ、
）、１８（１）、 Ｊａｎ、／ＦＱｂ。Utilization of laser (has the disadvantage that high sensitivity characteristics cannot be obtained due to low P, and the sensitive wavelength range is 700 nm or more)2 has the disadvantage of stiffening the layer structure of the laser sensitive layer. For this reason, in recent years, research has been carried out on organic compounds that can undergo material changes (1r) with light energy in the long wavelength range like LtI.
98: No. 1, “Research Discloser (Res.
Cacl+ Disclosure) J 2051
7 (1981, 5H).
・-Narubaki, L-Mu Scientific Technology (J, Vac, Sc1. TecllDol,
), 18(1), Jan, /FQb.
１９１０、１０５−＋＋＋ｑａに開示のスクェアリリウ
ム染よｌを含４ｊ シた有機化合物か７旧１ｎｍ以りの
レーザーに；ｙ、１ ｕて感応性かあることが知られて
いる。It is known that organic compounds containing square lylium dyes disclosed in 1910, 105-+++qa are sensitive to lasers with a wavelength of 1 nm or longer.
しかし、 股に長波長側に吸収特性をもつ有機化合物は
、１・分なＳ／Ｎ比を得る為には８３ ［３ｎ Ｉ１１
波長レーサーに対して記録感度が１００ＩＩＩＪ／Ｃｌ
１１２以ヒ必要てあり、よりデータの転送速度を速める
為に高速走査て記録するには、より大出力のレーザー光
線か必要となり、バー１〜ウエアの耐久性、ｉ！合性を
考慮すると、よりレーザー感応層の感１隻を高める必要
かある。また、これらの有機化合物は５−１も性の点て
も技術的な問題点かあることなどから、必ずしも特性に
、満足できる有機化合物が開発されているものとは、：
°えないのが現状である。However, for organic compounds that have absorption characteristics on the longer wavelength side, in order to obtain an S/N ratio of 1.
Recording sensitivity for wavelength laser is 100IIIJ/Cl
112 and above, and in order to perform high-speed scanning and recording in order to further increase the data transfer speed, a higher output laser beam is required. Considering the compatibility, it is necessary to further increase the sensitivity of the laser sensitive layer. In addition, these organic compounds have some technical problems in terms of properties and characteristics, so it is not necessarily the case that organic compounds with satisfactory properties have been developed:
°The current situation is that this is not possible.
［発明が解決しようとする問題点］
本発明者等はｌ―述の従来の技術の欠点に鑑みて鋭意研
究を行った結果、光学的記録媒体において、記録レーザ
ー光の１１ｆ視域及び近赤外域の波長近辺に吸収極大の
特性を有する色素化合物と、記録レーザー光が色素化合
物に効果的に吸収され熱的エネルギーに変換して発生し
た熱により分解してカスを発生する化合物とを含有する
記録層を設けることにより、高感度でかつ高密度の記録
及び光学的＋１生が可能な光学的記録媒体を提供するこ
とができることを知見し本発明の完成に到ったものであ
る。[Problems to be Solved by the Invention] The present inventors conducted intensive research in view of the shortcomings of the conventional technology mentioned above. Contains a dye compound that has the property of maximum absorption near the outer wavelength, and a compound that decomposes and generates residue due to the heat generated when the recording laser beam is effectively absorbed by the dye compound and converted into thermal energy. The present invention was completed based on the finding that by providing a recording layer, it is possible to provide an optical recording medium that is capable of high sensitivity, high density recording, and optical +1 generation.
［問題点を解決するための手段］および［作用］即ち１
本発明は支持体１−に設けた記録層にレーザー光を照射
して記録＋ｌｆ生を行なう光学的記録媒体において、記
録層が記録レーザー光の波長近辺に吸収極大を有する色
素化合物と、記録レーザー光が色素化合物に吸収されて
発生した熱により分解するカス発生化合物とを含有する
ことを！特徴とする光学的記録媒体である。[Means for solving the problem] and [effect] i.e. 1
The present invention provides an optical recording medium in which recording + LF is performed by irradiating a recording layer provided on a support 1- with a laser beam, in which the recording layer contains a dye compound having an absorption maximum near the wavelength of the recording laser beam, Contains a scum-generating compound that is decomposed by the heat generated when light is absorbed by the pigment compound! This is a characteristic optical recording medium.
以Ｆ１本発明を１１Ｔ細に説明する。但し、以下の記載
において・′１１比を表わす％及び部は、特に説明のな
い限り改量店僧とする。Hereinafter, the present invention will be explained in detail. However, in the following description, % and parts representing the .'11 ratio will be expressed as the modified weight unless otherwise specified.
７ｆＳ１図乃至第４図は各／１本発明の光学的記録媒体
の実施態様を示す断面図である。7fS1 to 4 are sectional views each showing an embodiment of the optical recording medium of the present invention.
第１図において、本発明の光学的記録媒体はシート・あ
るいは板状の基板となる支持体ｌ上に、色、ト化合物と
ガス発生化合物を含有しレーザー光により熱的変形を起
こす記録層２を形成してなるらのである。In FIG. 1, the optical recording medium of the present invention has a recording layer 2 on a support l serving as a sheet or plate-like substrate, which contains a color compound, a gas-generating compound, and undergoes thermal deformation by laser light. It is formed by forming.
本発明において、支持体ｌとしては、従来より公知のフ
ィルムや板状の基板を使用することかてき、例えばカラ
ス、金属、セラミック、紙及びポリメチルメタクリレ−
１−、ポリカーボネート、ポリエチレンテレフタレート
等の合成樹脂などが好適に使用できる。In the present invention, as the support l, conventionally known film or plate-like substrates may be used, such as glass, metal, ceramic, paper, and polymethyl methacrylate.
1- Synthetic resins such as polycarbonate and polyethylene terephthalate can be suitably used.
また、従来用いられているヒ記以外の広範囲の支持体材
料をも用いることもてきる。In addition, a wide range of support materials other than those conventionally used can also be used.
イ１１シ７、レーサー光”Ｖ−Ｃ微細なピッ１〜記録を
行う場合はｊＤ、粘度、十面中−滑性等の１法安定＋１
４こ役れた材料か良い。また、１．（板側から光照射を
行う場合はくの照射光にり・１して透明な材料か々ｆま
しい。I11shi7, Racer light "V-C minute pitch 1~ When recording, jD, viscosity, stability of 1 method such as lubricity +1
4 It's good to use useful materials. Also, 1. (When irradiating light from the plate side, it is difficult to use a transparent material because of the irradiation light.
記録層２は少なくども記録レーサー光の波長近辺に吸収
極大を４１する色素化合物と記録レーザー光か色、＋、
化合物に吸収されて発生した熱により分解しカスを発生
ずるガス発生化合物とを含有し。The recording layer 2 contains at least a dye compound that has an absorption maximum near the wavelength of the recording laser beam, and a color of the recording laser beam.
Contains a gas-generating compound that decomposes and generates scum due to the heat generated when absorbed by the compound.
その龍必黄により分解助剤、バインター、分散剤、油剤
、１１丁・■剤、充１に′！剤笠の添加剤から構成され
る。Due to the Dragon Bihuang, there are 11 decomposition aids, binders, dispersants, oil agents, and 11 agents. Composed of additives.
該記録層２の膜厚は０．１１１μ１１〜２０μ垣程度か
好ましく、さらには記録レーザー光に対して記録層の熱
的変形に１〜分な光吸収性と＋Ｉｒ生レーし−光に対し
て１・分な光反射性を有）「る薄層を安定に形成てき１
１するならば、１１ｆ能な限り薄いほうか良い。The thickness of the recording layer 2 is preferably about 0.111 μm to 11 μm to 20 μm, and furthermore, it has a light absorption property of 1 to 1 minute for thermal deformation of the recording layer against the recording laser beam and +Ir radiation against the light. It can stably form a thin layer with a light reflectivity of 1.
If you choose 1, it is better to make it as thin as possible with 11F.
前記の記録レーザー光の波長近辺に吸収極大を（ｉする
色素化合物は使用するレーサー光の波長によって適宜選
択する必凹かあるか１例えば、ジアニン、メロシアニン
、１−リフェニルメタン、ナフトキノン、キサンデン、
スクアリウム、アズレ、２．メチンおよびピリリウムな
どを含めて、アン、スチル△、ン、フタロシアニン系の
直接染料。The dye compound having an absorption maximum near the wavelength of the recording laser beam must be selected appropriately depending on the wavelength of the laser beam used.For example, dianine, merocyanine, 1-liphenylmethane, naphthoquinone, xandene,
Squarium, Azure, 2. Direct dyes of the an, steel △, n, and phthalocyanine series, including methine and pyrylium.
アソ、アントラキノン、１〜リフェニルメタン、キサン
デン、アシン系の酸性染料、シアニン、アソ、アシン、
トリフェニルメタン、アズレン、メチン、ピリリウム系
の塩基性染料、アゾ、アントラキノン、キサンチン、ト
リフェニルメタン系の媒染、酸性媒染染料、アントラキ
ノン、インジゴイ１〜系のｉｆ染染料、アソ、アントラ
キノン、フタロシアニン、トリフェニルメタン系の油溶
染料。Aso, anthraquinone, 1-rephenylmethane, xandene, acine acid dye, cyanine, aso, acine,
Triphenylmethane, azulene, methine, pyrylium-based basic dyes, azo, anthraquinone, xanthine, triphenylmethane-based mordants, acidic mordant dyes, anthraquinone, indigo 1-based IF dyes, aso, anthraquinone, phthalocyanine, tri- Phenylmethane oil-soluble dye.
硫化染料、およびジチオール系の金属錯体などの一挿或
いは二種以とを適宜混合して使用する。One or more of sulfur dyes and dithiol-based metal complexes may be used in combination as appropriate.
記録層中の色素化合物の含イ１１ｆ￥は・１（）〜９９
．９％、好まし・〈は５０〜９９．９％か望ましく、４
０％未満ては記録層の熟的変形にヒ分な光吸収性と再生
レーザーに対して上方な光反射性を得られず、 ９！１
．９％をこえるとカス発生化合物の含有ｊＪ−か４１分
となり感度上ｙＩの効果か現；ｂ、ｉ１難くなる。The content of the dye compound in the recording layer is 11f ¥ 1 () ~ 99
．． 9%, preferably 50-99.9%, preferably 4
If it is less than 0%, it will not be possible to obtain sufficient light absorption for the gradual deformation of the recording layer and good light reflection for the reproduction laser, 9!1
．． When it exceeds 9%, the content of the residue-generating compound becomes 41 minutes, and the effect of yI on sensitivity becomes difficult.
次に 記録レーザー光か色素化合物に吸収されて発生し
た熱により分解してガスを発生するガス発生化合物とし
ては、（υガスの放出が短時間でその速度が調節できる
こと、（り分解温度を調節できること、（３）ガス発生
＋、Ｂが一定で、多いこと竿の条件を具備する物質が９
１ましい。Next, as a gas-generating compound that decomposes to generate gas by the heat generated by recording laser light or the dye compound, it is possible to release υ gas in a short time and its speed can be adjusted. (3) Gas generation + and B are constant and large.There are 9 substances that meet the conditions of the rod.
1st thing.
該ガス発生化合物の具体例を示すと１分解温度９分解速
度笠を適宜選択する必要があるが、例えば有機化合物と
しては、ジニトロリペンタメチレンテトラミン（［１Ｐ
Ｔ）、 Ｎ、Ｎ′−ジメチル−Ｎ、Ｎ’ −ジニトロ
リテレフタルアミド（ＤＭＤＮＴＡ）等のニトロリ化合
物、ベンゼンスルホニルヒドラジド（’ＢＳＨ）。Specific examples of the gas-generating compound include 1 decomposition temperature, 9 decomposition rate, and need to be selected appropriately; for example, as an organic compound, dinitrolipentamethylenetetramine ([1P
T), nitrolytic compounds such as N,N'-dimethyl-N,N'-dinitroliterephthalamide (DMDNTA), benzenesulfonyl hydrazide ('BSH).
ｐ−トルエンスルホニルヒドラジド（ＴＳＨ）、 ジ
フェニルスルホン−ｓ、ｓ’−ジスルホニルヒドラジド
（ＤＰＳＤＳＩＩ）、 ４．４’−オキシビスベンゼン
スルホニルヒドラジド頁０ＢＳＨ）７のスルホニルヒド
ラジド化合物、アゾジカルボンアミド（ＡｎＣＡ） 、
アゾビスイソブチロニＩ・リル（ＡＩＢＮ）、ジアゾア
ミノベンゼン（ＤＡＢ） 、 バリウムーアゾジ力ル
ポキシレー）７のアゾ、ジアゾ化合物、及びトリヒドラ
ジノトリアジン、ｐ−トルエンスルホニルセミカルバシ
ト４．４′−オキシビスベンゼンスルホニルセミカルバ
ジＩ−笠が用いられ、無機化合物としては重炭酸ナトリ
ウム、炭酸アンモニウム、重炭酸アンモニウム、 「＋
＋；、硝酸アンモニウム及び過酸化物等が用いられる。p-toluenesulfonylhydrazide (TSH), diphenylsulfone-s,s'-disulfonylhydrazide (DPSDSII), 4,4'-oxybisbenzenesulfonylhydrazide (page 0BSH) 7 sulfonylhydrazide compound, azodicarbonamide (AnCA),
azo, diazo compounds of azobisisobutyronitrile (AIBN), diazoaminobenzene (DAB), barium azodihydrupoxylate 7, and trihydrazinotriazine, p-toluenesulfonyl semicarbacite 4,4'-oxybis Benzene sulfonyl semicarbadi I-kasa is used, and the inorganic compounds include sodium bicarbonate, ammonium carbonate, ammonium bicarbonate, "+
+;, ammonium nitrate, peroxide, etc. are used.
上記の有機化合物及び無機化合物ともに一種或いは二種
以りを適宜混合して使用する。The above-mentioned organic compounds and inorganic compounds may be used alone or in combination of two or more thereof.
」−記ガス発生化合物の中で有機化合物は分解挙動が発
熱反応となることから一定温度に達すると思念に分解す
る為に発生ガス量も一定となり易いので添加＋、＋−と
ガス発生丑との関係が予想しやす〈好ましい。Among the gas-generating compounds, organic compounds have an exothermic decomposition behavior, so they decompose spontaneously when a certain temperature is reached, so the amount of gas generated tends to be constant. The relationship is easy to predict (preferable).
また、無機化合物は一般に吸熱反応が多く徐々に分解す
るものがあるが、この様な場合にはガス発生州等をコン
トロールすることが望ましい。In addition, some inorganic compounds generally undergo endothermic reactions and gradually decompose, and in such cases it is desirable to control the state of gas generation.
記録層中のガス発生化合物の含有量は０．１％〜６０％
、特に１〜５０％の範囲が好ましい。０．１％未満では
発生するガス量も少なくなる為添加による感度アップの
効果が現われにくく、６０％をこえると記録レーザー光
の波長近辺に吸収極大を持つ色素化合物のレーザー波長
に対する塗膜での吸光係数にもよるが、該色素化合物の
記録層中での：’Ｉ’１合が少なくなる為レーザー光照
射時の記録層の温度Ｊ： ’ｙｌが不１゛分となる為で
ある。The content of gas-generating compounds in the recording layer is 0.1% to 60%
, particularly preferably in the range of 1 to 50%. If it is less than 0.1%, the amount of gas generated will be small, so the effect of increasing sensitivity due to addition will not be apparent, and if it exceeds 60%, the coating film will not be able to absorb the laser wavelength of the dye compound, which has maximum absorption near the wavelength of the recording laser beam. This is because, although it depends on the extinction coefficient, the ratio of :'I'1 in the recording layer of the dye compound decreases, so that the temperature J:'yl of the recording layer at the time of laser beam irradiation becomes unequal.
また、ガス発生化合物、特に有機系の化合物には分解温
度を調節する為に適宜助剤を添加しても良い。助剤とし
ては、例えば、分解温度を低下させる助剤として、亜鉛
偵、カプリル酸亜鉛、硝酸＋１１）鉛、亜鉛脂肪酸石け
ん等の亜鉛化合物、炭酸鉛、フタル酸鉛、亜すン酸鉛、
ステアリン酸鉛笠の鉛の化合物、カプリル酸カドミウム
、カプロン酸カドミウム、ラウリン酸カドミウム、ミリ
スチン酸カドミウム、カドミウム脂肪酸石けん等のカド
ミウム化合物、及び尿素、硼砂、エタノールアミン等が
用いられる。Further, an appropriate auxiliary agent may be added to the gas-generating compound, especially an organic compound, in order to adjust the decomposition temperature. As an auxiliary agent, for example, as an auxiliary agent that lowers the decomposition temperature, zinc compounds such as zinc powder, zinc caprylate, lead nitric acid +11), zinc fatty acid soap, lead carbonate, lead phthalate, lead sulfite,
Lead compounds such as lead stearate, cadmium caprylate, cadmium caproate, cadmium laurate, cadmium myristate, cadmium fatty acid soap, urea, borax, ethanolamine, etc. are used.
他方、分解を抑制する助剤としては、マレイン酸、フマ
ル酸笠の有機酸、ステアロイルクロリド、フタロイルク
ロリド等のハロゲン化有機酸、無水マレイン酸、無水フ
タルｌ１ｉ１ｉ等の無水有機酸、ヒドロキノン、ナフタ
レンジオール等の多水酸基アルコール、ｄ−マルトーズ
Ｔの炭化水素、脂肪族アミン、ヘテロサイクリックアミ
ン、アミド。On the other hand, auxiliary agents for suppressing decomposition include organic acids such as maleic acid and fumaric acid, halogenated organic acids such as stearoyl chloride and phthaloyl chloride, organic acid anhydrides such as maleic anhydride and phthalic anhydride, hydroquinone, and naphthalene. Polyhydric alcohols such as diols, hydrocarbons such as d-maltose T, aliphatic amines, heterocyclic amines, amides.
オキシム等の窒素含有物、チオール、メルカプタン、Ｍ
化物、スルホン酸、スルホキシド、インシアネート等の
イオウ含有物、シクロヘキサノン。Nitrogen-containing substances such as oximes, thiols, mercaptans, M
compounds, sulfur-containing substances such as sulfonic acids, sulfoxides, incyanates, and cyclohexanone.
アセチルアセトン等のケトン、アルデヒド類、その他に
リン、酸塩、亜リン酸塩化合物、８．６−シメチルフル
ペン、ヘキサクロロシクロペンタジェン。Ketones such as acetylacetone, aldehydes, phosphorus, acid salts, phosphite compounds, 8,6-dimethylfulpene, hexachlorocyclopentadiene.
ジブチル錫マレエート等を適宜使用して分解挙動を修正
することができる。Dibutyltin maleate and the like can be used as appropriate to modify the decomposition behavior.
本発明において、記Ｑ層は塗布法あるいは蒸着法等の種
々の方法により支持体ヒに形成される。In the present invention, the Q layer is formed on the support by various methods such as coating or vapor deposition.
塗１１ｉ法を用いる場合には、色素化合物とガス発生化
合物とを有機溶媒中に溶解あるいは分散した溶液を支持
体１」二に塗布することによって形成することができる
。また必要に応じて成膜性および塗膜安定性を考慮して
バインダーを記録層中に混合して成膜することもできる
。塗布の際に使用できる有機溶媒は、前述の色素化合物
及びガス発生化合物を分散状態とするか、或いは溶解状
態とするかによって異なるが、一般にはメタノール、エ
タノール、インプロパツール、ジアセトンアルコール、
メチルセロソルブ笠のアルコール類、アセトン、メチル
エチルケトン、シクロヘキサノンなどのケトン類、Ｎ、
Ｎ−ジメチルホルムアミド、Ｎ、Ｎ−ジメチルアセトア
ミドなどのアミド類、ジメチルスルホキシドなどのスル
ホキシド類、テＩ・ラヒドロフラン、ジオキサン、エチ
レングリコールモノメチルエーテルなどのエーテル類、
酢酸メチル、酢酸エチル、酢酸ブチルなどのエステル類
、クロロホルム、塩化メチレン、ジクロロエタン、ジク
ロルエチレン、四塩化炭素、トリクロルエチレンなどの
脂肪族ハロゲン化炭化水素類、あるいはベンゼン、トル
エン、キシレン、リグロイン、モノクロルベンゼン、ジ
クロルベンゼンなどの芳香族類などを用いることができ
る。When using the coating method 11i, it can be formed by coating the support 1'' with a solution in which a dye compound and a gas generating compound are dissolved or dispersed in an organic solvent. Further, if necessary, a binder may be mixed into the recording layer to form a film in consideration of film formability and coating stability. Organic solvents that can be used during coating vary depending on whether the above-mentioned pigment compounds and gas-generating compounds are in a dispersed or dissolved state, but generally include methanol, ethanol, inpropatol, diacetone alcohol,
Methyl Cellosolve Kasa's alcohols, acetone, methyl ethyl ketone, ketones such as cyclohexanone, N,
Amides such as N-dimethylformamide and N,N-dimethylacetamide, sulfoxides such as dimethyl sulfoxide, ethers such as terahydrofuran, dioxane, and ethylene glycol monomethyl ether;
Esters such as methyl acetate, ethyl acetate, butyl acetate, aliphatic halogenated hydrocarbons such as chloroform, methylene chloride, dichloroethane, dichloroethylene, carbon tetrachloride, trichloroethylene, or benzene, toluene, xylene, ligroin, monochlor Aromatics such as benzene and dichlorobenzene can be used.
また、好適なバインダーとしては、広範な樹脂から選択
することができる。具体的にはニトロセルロース、リン
酸セルロース、硫酸セルロース。Suitable binders can also be selected from a wide range of resins. Specifically, nitrocellulose, cellulose phosphate, and cellulose sulfate.
酢酸セルロース、プロピオン酸セルロース、醋酸セルロ
ース、ミリスチン酸セルロース、バルミチン酸セルロー
ス、酢酸・プロピオン酸セルロースＩＩＭ・酪酸セルロ
ースなどのセルロースエステル類、メチルセルロース、
エチルセルロース。Cellulose esters such as cellulose acetate, cellulose propionate, cellulose acetate, cellulose myristate, cellulose valmitate, cellulose acetate/propionate IIM/cellulose butyrate, methyl cellulose,
Ethyl cellulose.
プロピルセルロース、ブチルセルロースなどのセルロー
スエーテル類、ポリスチレン、ポリ塩化ビニル、ポリ酢
酸ビニル、ポリビニルブチラール。Cellulose ethers such as propyl cellulose and butyl cellulose, polystyrene, polyvinyl chloride, polyvinyl acetate, and polyvinyl butyral.
ポリビニルアセタール、ポリビニルアルコール。Polyvinyl acetal, polyvinyl alcohol.
ポリビニルピロリドンなどのビニル樹脂類、スチレン−
ブタジェンコポリマー、スチレン−７クリロニトリルコ
ボリマー、スチレン−ブタジェン−アクリロニトリルコ
ポリマー、塩化ビニル−酢酸ビニルコポリマーなどの共
重合樹脂類、ポリメチルメタクリレート、ポリメチルア
クリレート、ポリブチルアクリレート、ポリアクリル酸
、ポリメタグリル酸、ポリアクリルアミド、ポリアクリ
ロニトリルなどのアクリル樹脂類、ポリエチレンテレフ
タレートなどのポリエステル類、ポリ（４，４′−イソ
ブロピリデンジフェニレンーコ−１，４−０シクロヘキ
シレンジメチレンカーボネート）、ポリ（エチレンジオ
キシ−３，３′−フェニレンチオカーボネート）、ポリ
（４，４’−イソブロピリデンジフェニレンカーポネー
トーコーテレフタレート）、ポリ（４，４″−イソブロ
ピリデンジフェニレンカーポネート）、ポリ（４，４’
−５ｅｃ−プチリデンジフェニレンカーポネー；・）、
ポリ（４，４’−イソプロビリデンシフェニレンカーポ
ネ−１・−フロック−オキシエチレン）などのポリアリ
−レート樹脂類、あるいはポリアミド類、ポリイミド類
、ポリウレタン類、エポキシ樹脂類、フェノール樹脂類
、ポリエチレン、ポリプロピレン、ｎ１素化ポリエチレ
ン、ポリブテン、ポリイソブチレンなとのポリオレフィ
ン類、天然ゴム、インプレンゴム、クロロプレンゴム等
のエラストマー類などを用いることができ、その他場合
により樹脂以外の鯨ロウ、ミツロウ、ラノリン、カルナ
バワックス、キャンデリラワックス、モンタンワックス
、セレシンワフクス等の天然ワックス、パラフィンワッ
クス、マイクロクリスタリンワックス等の石油ワックス
、酪化ワックス、エステルワックス、フィッシャートロ
プシュワックス等の合成ワックス、ラウリン酸、ミリス
チン酸、パルミチン酸、ステアリン酩、ベヘニン酸等の
高級脂肪酸、カテアリルアルコール、ベヘニルアルコー
ル等の高級アルコール、ショ糖の脂肪酸エステル、ソル
ビタンの１旧肋酸エステル等のエステル類、オレイルア
ミド算のアミド類を適宜混合させることができる。Vinyl resins such as polyvinylpyrrolidone, styrene
Copolymer resins such as butadiene copolymer, styrene-7crylonitrile copolymer, styrene-butadiene-acrylonitrile copolymer, vinyl chloride-vinyl acetate copolymer, polymethyl methacrylate, polymethyl acrylate, polybutyl acrylate, polyacrylic acid, polymethacrylic acid , acrylic resins such as polyacrylamide and polyacrylonitrile, polyesters such as polyethylene terephthalate, poly(4,4'-isopropylidene diphenylene-co-1,4-0 cyclohexylene dimethylene carbonate), poly(ethylene dioxy -3,3'-phenylene thiocarbonate), poly(4,4'-isopropylidene diphenylene carbonate coated terephthalate), poly(4,4''-isopropylidene diphenylene carbonate), poly(4,4'
-5ec-Ptylidene Diphenylene Carbone;・),
Polyarylate resins such as poly(4,4'-isopropylidenecyphenylene carbonate-1-floc-oxyethylene), polyamides, polyimides, polyurethanes, epoxy resins, phenolic resins, polyethylene, Polyolefins such as polypropylene, n1-polyethylene, polybutene, and polyisobutylene, elastomers such as natural rubber, imprene rubber, and chloroprene rubber can be used, and in some cases, spermaceti wax, beeswax, lanolin, and carnauba other than resins can be used. Natural waxes such as wax, candelilla wax, montan wax, and ceresine wax, petroleum waxes such as paraffin wax and microcrystalline wax, synthetic waxes such as butyric wax, ester wax, and Fischer-Tropsch wax, lauric acid, myristic acid, palmitic acid, Stearic acid, higher fatty acids such as behenic acid, higher alcohols such as catearyl alcohol and behenyl alcohol, fatty acid esters of sucrose, esters such as 1-early acid ester of sorbitan, and amides such as oleylamide may be mixed as appropriate. can.
以上のバインダーにジオクチルフタレート、ジブチルフ
タレート、トリクレジルフォスフェート等のｕｆ ｒｆ
ｆｊ剤、鉱油、植物油等の油剤、更にアルキルベンゼン
スルホン醜ンータ、ポリオキシエチレンアルキルフェニ
ルエーテル等の分散剤及びその他の添加剤を適宜混合さ
せ記録層の成１１り性、塗膜安定性を高めることができ
る。uf rf such as dioctyl phthalate, dibutyl phthalate, tricresyl phosphate, etc.
Oil agents such as fj agents, mineral oils, vegetable oils, etc., dispersants such as alkylbenzene sulfone filters, polyoxyethylene alkylphenyl ethers, and other additives are appropriately mixed to improve the formation properties and coating film stability of the recording layer. I can do it.
塗］二は、浸漬コーティング法、スプレーコーティング
法、スピンナーコーティング法、ビードコーチインク法
、マイヤーへ−コーティンク７１ 。[Coating] Second, dip coating method, spray coating method, spinner coating method, bead coach ink method, Meyer Coating 71.
ブレードコーチインク法、ローラーコーティング法、カ
ーテンコーティング法などのコーティング法を用いて行
うことができる。This can be done using a coating method such as a blade coach ink method, a roller coating method, or a curtain coating method.
さらに、本発明の光学的記録媒体には、第２図に小ずよ
うに記録層２１−に記録及び１り牛用レーサー光に対し
て透明な保１．々層３を設けることかてきる。該保護層
は、支持体側から光を照射する場合は不透明ても差支え
ない。Furthermore, the optical recording medium of the present invention has a recording layer 21- as shown in FIG. It is also possible to provide multiple layers 3. The protective layer may be opaque when irradiated with light from the support side.
また、第３図に示すように支持体ｌと記録層２の間に接
７ｔｉ強度９機械的強度、支持体への熱伝導損失等を改
良するためにド引き層４を１没けても良い。In addition, as shown in FIG. 3, a draw layer 4 may be inserted between the support 1 and the recording layer 2 in order to improve the contact strength 9 mechanical strength, heat conduction loss to the support, etc. good.
さらには、第４図のように支持体１．１−にあらかしめ
凸凹を形成したサーボ１〜ラツク５を設け、その１．に
記録層２を形成するとカイト１〜う・・５・り伺きの記
録＋Ｉｆ生用光学的記録奴休と体ても利用できる。Furthermore, as shown in FIG. 4, the servos 1 to 5 having roughened roughness are provided on the support 1.1-. If the recording layer 2 is formed on the surface, it can also be used as an optical recording system for recording the kites 1 to 5.
さらに、第５ ＋；＜１に示すように、第１図に示す構
造の２個の光学的記録なＶ体をスペーサ６を介在せしめ
゛（記録層２を内側にして、互に対面せしめて密封した
中′ノドＭｉ造に形成することもてきる。Furthermore, as shown in the fifth +; It can also be formed into a sealed inner throat structure.
このよ−）に構成すると記録層２は感度を損なわ１″に
外気としゃ断され、ゴミの付、ｉ； 、キズの発生、有
゛１１：カスとの接触子から保護゛Ｃきるため、保（ｆ
−性はより向Ｌオる。また、両面を記録層として使用す
ることかてき実用性か高い。If the recording layer 2 is constructed in this manner, the sensitivity will be impaired and the recording layer 2 will be cut off from the outside air at a rate of 1", which will prevent the formation of dust, dust, and scratches. (f
- Gender is more positive. Furthermore, it is highly practical since both sides can be used as recording layers.
次に、本発明の光学的記録媒体のざらに別の実施態様を
示すと、第６図及び第７図に示す様に記録層２を、記録
レーサー光の波長近辺に吸収極大な右する色素化合物を
含有する光吸収記録補助層７と、記録レーサー光か色素
化合物に吸収されて発生し・た熱により分解するカス発
生化合物を含有する変形記録補助層８の二層を積層して
構成することもｉ’ｉ丁能である。Next, to show another embodiment of the optical recording medium of the present invention, as shown in FIGS. 6 and 7, the recording layer 2 is made of a dye that has maximum absorption near the wavelength of the recording laser light. It is constructed by laminating two layers: a light-absorbing recording auxiliary layer 7 containing a compound and a deformable recording auxiliary layer 8 containing a scum-generating compound that is decomposed by the heat generated when the recording laser beam is absorbed by the dye compound. This is also i'i cho noh.
光吸収記録補助層７及び変形記録補助層８には必要によ
り＋ｉｉｊ述したバインター、分解助剤、分散剤、油剤
ｉＩｆ Ｊ７ｊ剤、充填剤等の添加剤を用いることか
てきる。The light-absorbing recording auxiliary layer 7 and the deformation recording auxiliary layer 8 may contain additives such as a binder, a decomposition aid, a dispersant, an oil agent, a filler, etc. as described above, if necessary.
また１、この場合の光吸収記録補助層７における色素化
合物の含有！ｄは４（）〜 Ｉ（）０％か好ましく、４
０％未満ては記録層の熱的ラジカル生成にト分な光吸収
性と１１ｆ生レーサー光に対して上方な光反射性を得ら
れない９またガス発生記録補助層８中におけるガス発生
化合物の含有瞳は０．１〜１（）０％か望まし・＜、０
．ｔ％未満ては発生ずるカスｊ１：か尖なくなる為、感
Ｉ！ＡＬｌ−１ｒｌの効果か現われにくくなる。Also, 1. In this case, the light-absorbing recording auxiliary layer 7 contains a dye compound! d is preferably 4() to I()0%, 4
If it is less than 0%, it will not be possible to obtain sufficient light absorption for thermal radical generation in the recording layer and good reflectivity for the 11f raw laser beam9. Contained pupils should be 0.1 to 1 () 0% or <, 0
．． If it is less than t%, the scum that will be generated will be less sharp. The effect of ALl-1rl becomes less apparent.
光吸収記録補助層の膜厚は０ 、０１〜２０Ａ、また変
形記録仝１ｊ助層の１１り厚は０ 、０１〜２０人か好
ましい。The thickness of the light-absorbing recording auxiliary layer is preferably 0.01 to 20 Å, and the thickness of the deformed recording auxiliary layer is preferably 0.01 to 20 Å.
以１−に説明した本発明の光学的記録媒体の記録層に記
録レーザー光を照射すると、；）１１記記録レーザー光
の波長近辺に吸収極大を右する色素化合物に光エネルギ
ーか吸収され、熟エネルキーに変換されて、その熱によ
りガス発生化合物か分解してガスを発生して記録層に熱
的変形を起こし情報の記録か行われる。この際１色素化
合物自体の融解、蒸発、′／Ｍ集、その他の熱か原因と
なって起きる変形も同時に起こり得る。When the recording layer of the optical recording medium of the present invention described in 1-1 below is irradiated with a recording laser beam, the light energy is absorbed by the dye compound that has an absorption maximum near the wavelength of the recording laser beam in 11. The energy is converted into energy, and the heat decomposes the gas-generating compound to generate gas, which thermally deforms the recording layer and records information. At this time, melting, evaporation, '/M concentration, and other deformations caused by heat may occur simultaneously with the dye compound itself.
ｆｌｒ生時は、前記の熱的変形領域と非変形領域との光
反射率の差異から容易に検知することかてきる。When FLR is generated, it can be easily detected from the difference in light reflectance between the thermally deformed region and the non-deformed region.
また、光学的記録媒体におい゛Ｃ１記録層としてレー→
トー光の波長近辺に吸収極大を右する色ふ化合物中体、
あるいはバインター、その他の添加剤を加えた色素化合
物のみからなる系ては、光源とし・て’ｌ′−４体レー
サーを用いた場合、記録エネルギーかｌＵＯｍＪ／ｃｍ
” ｌ！ ｈとなる低スピー１−て走査する時は問題は
ないか、バッファーを用いずにデータの転送速度を速め
る為に、特に光ディスクとして用いる場合は角速度一定
て高速回転させた際、高速走査記録となる為、記録エネ
ルギーかＩ Ｉｔ １１ ｎ＋ Ｊへｌ１１２以下とな
り、感度不足て熱的変形が不充分となる。そのために１
％生時、熱的変形領域と非変形領域との光反射率の差異
か不明確となりＳ／Ｎ比の低下を生ずる。特に線速度か
高速となるディスク外周部て顕スである。その為、本発
明の光学記録媒体は、記録レーザー光の波長近辺に吸収
極大を有する色素化合物の他にカス発生化合物をｉＱ合
金全町た記録層を設けているのて前記の様な問題はなく
、感度、 Ｓ／Ｎ比を向りさせることかてきる。In addition, in an optical recording medium, a laser is used as a C1 recording layer.
A colored compound medium that has an absorption maximum near the wavelength of light,
Alternatively, in a system consisting only of a dye compound containing binder and other additives, when an 'l'-4 body racer is used as a light source, the recording energy is lUOmJ/cm.
Is there any problem when scanning at a low speed of 1-h, which is "l! Since scanning recording is performed, the recording energy is less than I It 11 n+ J, resulting in insufficient sensitivity and insufficient thermal deformation.
%, the difference in light reflectance between the thermally deformed region and the non-deformed region becomes unclear, resulting in a decrease in the S/N ratio. This is especially noticeable at the outer periphery of the disk where the linear velocity is high. Therefore, since the optical recording medium of the present invention has a recording layer in which the iQ alloy is entirely made up of a scum-generating compound in addition to a dye compound having an absorption maximum near the wavelength of the recording laser beam, the above-mentioned problem does not occur. However, it is possible to improve the sensitivity and S/N ratio.
［実施例コ
以下、実施例、比較例により本発明を更に具体的に説明
する。[Example] The present invention will be explained in more detail below using Examples and Comparative Examples.
実施例１〜４及び比較例１〜４
後記第１表に・工くず無力に従い、色素化合物と、熱時
分解しカスを発生するガス発生化合物とを混合比８゛２
の１１１合でジクロし１エタンに溶解分散し、厚さ１．
２ｍｍ 、直？’１５２１１ｃｎ＋のガラスディスクツ
１（板ににスピンナーて塗１（ｊ Ｌ／た後乾燥し、１
模厚かＩ Ｏｆｌ ＯＡの記録層を形成した８種類の光
学的記録媒体（実に例１〜４．および比較例１〜４）を
得た。Examples 1 to 4 and Comparative Examples 1 to 4 According to Table 1 below, the coloring compound and the gas-generating compound that decomposes when heated and generates residue are mixed at a mixing ratio of 8゛2.
dichloromethane, dissolved and dispersed in ethane to a thickness of 1.
2mm, straight? '15211cn+ glass disc 1
Eight types of optical recording media (Examples 1 to 4 and Comparative Examples 1 to 4) each having a recording layer of a relatively thick I Ofl OA were obtained.
第 １ 表
実施例５〜８及び比Ｉ咬例５〜８
後記第２表に小ず処方に従い、色素化合物をジクロ１．
１エタンに溶解し、厚さ１．２＋ｏｎ 、直径２ Ｉｆ
ｃ ｔｏのカラスディスク、Ｉ、！＆１−にスピンナ
ーて塗／＋ｊ Ｌ／た後乾燥し、１１ぐ厚か７５０Ａの
第■記録層を形成し１、ざらにカス発生化合物とバイン
ターとし”Ｃ二１− （ｆｆセルロースとを、混合比９
：１の割合てエタノール／ｎ−ヘキサン混合溶媒に溶解
分散し、第１記録層１−に同様に塗７Ｔ１．乾燥し、ｊ
ｌり厚７ｓｆｌＡの第２記録層を形成し、８種類の光学
的記録媒体（−？流側５〜８．および比較例５−８）を
得た。Table 1 Examples 5 to 8 and Ratio I bites 5 to 8 The pigment compound was dichloromethane 1.
Dissolved in 1 ethane, thickness 1.2+on, diameter 2 If
Crow disk of c to, I,! &1- with a spinner/+j L/ then dried to form a recording layer of 11 mm thick or 750A. ratio 9
:1 in a mixed solvent of ethanol/n-hexane and coated on the first recording layer 1- in the same manner as 7T1. dry, j
A second recording layer having a thickness of 7 sflA was formed to obtain eight types of optical recording media (-?flow side 5 to 8. and Comparative Example 5-8).
第 ２ 表
−じ流側９〜１２及び比較例９・〜１２後記第３表に示
す処方に従い、カス発生化合物とバインターとしてニト
ロセルロースとを混合比９：１の割合てジクロロエタン
に溶解分散し、厚さ１．２ｍｕ＋ 、直径２１１ ｃ
Ｉｌｌのガラスディスクツ、（板」−にスピンナーで塗
７１ｊシた後１：を燥し、１１９厚か７５０Ａの第１
＋ｊｔ！録層を形成した。さらに１色素化合物をメチル
セロソルフにＨ解し、第１記録層１に同様に塗布、乾燥
し、１模厚７５（１への第２記録層を形成し、８種類の
光学的記録媒体（実施例９〜１２．および比較例９〜１
２）を得た。Table 2 - Stream Sides 9 to 12 and Comparative Examples 9 to 12 According to the formulation shown in Table 3 below, a scum-generating compound and nitrocellulose as a binder were dissolved and dispersed in dichloroethane at a mixing ratio of 9:1, Thickness 1.2mu+, diameter 211c
After coating the Ill glass disc with a spinner (71j) on a (plate), drying it,
+jt! A recording layer was formed. Further, 1 dye compound was dissolved in methyl cellosol, and applied to the first recording layer 1 in the same manner and dried to form a second recording layer with a thickness of 75 mm (1 mm), and 8 types of optical recording media (Example 9 to 12. and Comparative Examples 9 to 1
2) was obtained.
第 ３ 表
さらに１６記により得られた光学的記録媒体をターンテ
ーブル１−に取り付け、ターンテーブルをモータで１８
０Ｏｒｐａ＋の回転をり°えながら、Ｇａ−Ａｊ）−Ａ
ｓ半導体レーザー（発信波長８３０ｒ＋＋＋＋ ）を用
い１周波数１８１（ｚのパルスを支持体側からトラック
状に照射して記録を行い、記録感度（光学顕微鏡により
ピットが形成されるのに必要なエネルギー）を比較した
。その結果を第４表に示す。The optical recording medium obtained according to Table 3 and Item 16 was attached to the turntable 1-, and the turntable was moved by the motor to 18
While changing the rotation of 0Orpa+, Ga-Aj)-A
Recording was performed by irradiating pulses of 1 frequency 181 (z) in a track shape from the support side using an s semiconductor laser (emission wavelength 830 r++++), and the recording sensitivity (energy required to form pits using an optical microscope) was compared. The results are shown in Table 4.
第 ４ 表
［発明の効果］
以上説明した様に本発明の光学的記録媒体は記録レーザ
ー光の波長近辺に吸収極大を有する色素化合物と、記録
レーザー光か色素化合物に吸収されて発生した熱により
分解するガス発生化合物とを含有した記録層を用いてい
るので感度の優れた光学的記録媒体を得ることかできる
優れた効果がある。Table 4 [Effects of the Invention] As explained above, the optical recording medium of the present invention has a dye compound having an absorption maximum near the wavelength of the recording laser beam, and heat generated when the recording laser beam is absorbed by the dye compound. Since a recording layer containing a gas-generating compound that decomposes is used, there is an excellent effect that an optical recording medium with excellent sensitivity can be obtained.
第１図乃至第４図は各々本発明の光学的記録媒体の実施
態様を示す断面図、第５図は第１図に示した本発明の光
学的記録媒体を中空構造にした実施態様を示す断面図、
第６図及び第７図は本発明の他の実施態様を示す断面図
である。
１・・・支持体 ２・・・記録層３・・・
保護層 ４・・・下引き層５・・・サーボ
トラック ６・・・スペーサー７・・・光吸収記録
補助層 ８・・・変形記録補助層第１図
第２図
第３図
第４図1 to 4 are cross-sectional views showing embodiments of the optical recording medium of the present invention, and FIG. 5 shows an embodiment in which the optical recording medium of the present invention shown in FIG. 1 has a hollow structure. cross section,
FIGS. 6 and 7 are cross-sectional views showing other embodiments of the present invention. 1...Support 2...Recording layer 3...
Protective layer 4... Undercoat layer 5... Servo track 6... Spacer 7... Light absorbing recording auxiliary layer 8... Deformed recording auxiliary layer Fig. 1 Fig. 2 Fig. 3 Fig. 4
Claims (1)
記録再生を行なう光学的記録媒体において、記録層が記
録レーザー光の波長近辺に吸収極大を有する色素化合物
と、記録レーザー光が色素化合物に吸収されて発生した
熱により分解するガス発生化合物とを含有することを特
徴とする光学的記録媒体。(1) In an optical recording medium in which recording and reproduction are performed by irradiating a recording layer provided on a support with a laser beam, the recording layer contains a dye compound that has an absorption maximum near the wavelength of the recording laser beam, and An optical recording medium characterized in that it contains a gas-generating compound that is absorbed by the dye compound and decomposed by the heat generated.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61082272A JPS62239436A (en) | 1986-04-11 | 1986-04-11 | Optical recording medium |
| US07/693,038 US5185233A (en) | 1986-04-11 | 1991-04-30 | Method of optical recording employing free radicals |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61082272A JPS62239436A (en) | 1986-04-11 | 1986-04-11 | Optical recording medium |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62239436A true JPS62239436A (en) | 1987-10-20 |
Family
ID=13769849
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61082272A Pending JPS62239436A (en) | 1986-04-11 | 1986-04-11 | Optical recording medium |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62239436A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0395053A2 (en) * | 1989-04-28 | 1990-10-31 | Daicel Chemical Industries, Ltd. | Optical information recording medium |
| US7094517B1 (en) * | 1998-05-13 | 2006-08-22 | D Data Inc. | Recording layer with organic dye-in-polymer (DIP) medium for write-once-read-many (WORM) optical discs with fluorescent reading |
-
1986
- 1986-04-11 JP JP61082272A patent/JPS62239436A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0395053A2 (en) * | 1989-04-28 | 1990-10-31 | Daicel Chemical Industries, Ltd. | Optical information recording medium |
| US5413893A (en) * | 1989-04-28 | 1995-05-09 | Daicel Chemical Industries, Ltd. | Optical information recording medium |
| US7094517B1 (en) * | 1998-05-13 | 2006-08-22 | D Data Inc. | Recording layer with organic dye-in-polymer (DIP) medium for write-once-read-many (WORM) optical discs with fluorescent reading |
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