JPS60219097A - Optical information recording medium - Google Patents
Optical information recording mediumInfo
- Publication number
- JPS60219097A JPS60219097A JP59076161A JP7616184A JPS60219097A JP S60219097 A JPS60219097 A JP S60219097A JP 59076161 A JP59076161 A JP 59076161A JP 7616184 A JP7616184 A JP 7616184A JP S60219097 A JPS60219097 A JP S60219097A
- Authority
- JP
- Japan
- Prior art keywords
- recording
- layer
- recording medium
- sensitivity
- 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
- 230000003287 optical effect Effects 0.000 title claims abstract description 18
- 230000001678 irradiating effect Effects 0.000 claims 1
- 230000035945 sensitivity Effects 0.000 abstract description 22
- JKQOBWVOAYFWKG-UHFFFAOYSA-N molybdenum trioxide Chemical compound O=[Mo](=O)=O JKQOBWVOAYFWKG-UHFFFAOYSA-N 0.000 abstract description 10
- 239000000126 substance Substances 0.000 abstract description 7
- 150000001875 compounds Chemical class 0.000 abstract description 5
- 230000015654 memory Effects 0.000 abstract description 4
- 229920000515 polycarbonate Polymers 0.000 abstract description 2
- 239000004417 polycarbonate Substances 0.000 abstract description 2
- 238000000151 deposition Methods 0.000 abstract 1
- 239000010410 layer Substances 0.000 description 54
- 239000000463 material Substances 0.000 description 30
- 239000011241 protective layer Substances 0.000 description 12
- 239000011347 resin Substances 0.000 description 12
- 229920005989 resin Polymers 0.000 description 12
- 238000000034 method Methods 0.000 description 10
- 239000010408 film Substances 0.000 description 9
- 229910052751 metal Inorganic materials 0.000 description 8
- 239000002184 metal Substances 0.000 description 8
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 4
- LRHPLDYGYMQRHN-UHFFFAOYSA-N N-Butanol Chemical compound CCCCO LRHPLDYGYMQRHN-UHFFFAOYSA-N 0.000 description 4
- -1 oxides Chemical class 0.000 description 4
- 239000000758 substrate Substances 0.000 description 4
- 238000007740 vapor deposition Methods 0.000 description 4
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 3
- YMWUJEATGCHHMB-UHFFFAOYSA-N Dichloromethane Chemical compound ClCCl YMWUJEATGCHHMB-UHFFFAOYSA-N 0.000 description 3
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 description 3
- 230000008859 change Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 150000002739 metals Chemical class 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- VLKZOEOYAKHREP-UHFFFAOYSA-N n-Hexane Chemical compound CCCCCC VLKZOEOYAKHREP-UHFFFAOYSA-N 0.000 description 3
- 229920003229 poly(methyl methacrylate) Polymers 0.000 description 3
- 239000004926 polymethyl methacrylate Substances 0.000 description 3
- QTBSBXVTEAMEQO-UHFFFAOYSA-M Acetate Chemical compound CC([O-])=O QTBSBXVTEAMEQO-UHFFFAOYSA-M 0.000 description 2
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 2
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 2
- 239000001856 Ethyl cellulose Substances 0.000 description 2
- ZZSNKZQZMQGXPY-UHFFFAOYSA-N Ethyl cellulose Chemical compound CCOCC1OC(OC)C(OCC)C(OCC)C1OC1C(O)C(O)C(OC)C(CO)O1 ZZSNKZQZMQGXPY-UHFFFAOYSA-N 0.000 description 2
- 239000000020 Nitrocellulose Substances 0.000 description 2
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 2
- 238000003848 UV Light-Curing Methods 0.000 description 2
- FJWGYAHXMCUOOM-QHOUIDNNSA-N [(2s,3r,4s,5r,6r)-2-[(2r,3r,4s,5r,6s)-4,5-dinitrooxy-2-(nitrooxymethyl)-6-[(2r,3r,4s,5r,6s)-4,5,6-trinitrooxy-2-(nitrooxymethyl)oxan-3-yl]oxyoxan-3-yl]oxy-3,5-dinitrooxy-6-(nitrooxymethyl)oxan-4-yl] nitrate Chemical compound O([C@@H]1O[C@@H]([C@H]([C@H](O[N+]([O-])=O)[C@H]1O[N+]([O-])=O)O[C@H]1[C@@H]([C@@H](O[N+]([O-])=O)[C@H](O[N+]([O-])=O)[C@@H](CO[N+]([O-])=O)O1)O[N+]([O-])=O)CO[N+](=O)[O-])[C@@H]1[C@@H](CO[N+]([O-])=O)O[C@@H](O[N+]([O-])=O)[C@H](O[N+]([O-])=O)[C@H]1O[N+]([O-])=O FJWGYAHXMCUOOM-QHOUIDNNSA-N 0.000 description 2
- 150000001408 amides Chemical class 0.000 description 2
- MVPPADPHJFYWMZ-UHFFFAOYSA-N chlorobenzene Chemical compound ClC1=CC=CC=C1 MVPPADPHJFYWMZ-UHFFFAOYSA-N 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 229920001577 copolymer Polymers 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 229920001249 ethyl cellulose Polymers 0.000 description 2
- 235000019325 ethyl cellulose Nutrition 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 230000008020 evaporation Effects 0.000 description 2
- 229910052738 indium Inorganic materials 0.000 description 2
- 150000002500 ions Chemical class 0.000 description 2
- 239000000314 lubricant Substances 0.000 description 2
- 229920001220 nitrocellulos Polymers 0.000 description 2
- 239000011368 organic material Substances 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 239000004065 semiconductor Substances 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- WSLDOOZREJYCGB-UHFFFAOYSA-N 1,2-Dichloroethane Chemical compound ClCCCl WSLDOOZREJYCGB-UHFFFAOYSA-N 0.000 description 1
- PYSRRFNXTXNWCD-UHFFFAOYSA-N 3-(2-phenylethenyl)furan-2,5-dione Chemical compound O=C1OC(=O)C(C=CC=2C=CC=CC=2)=C1 PYSRRFNXTXNWCD-UHFFFAOYSA-N 0.000 description 1
- 239000004709 Chlorinated polyethylene Substances 0.000 description 1
- 229910021594 Copper(II) fluoride Inorganic materials 0.000 description 1
- 108010010803 Gelatin Proteins 0.000 description 1
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- 239000004677 Nylon Substances 0.000 description 1
- 241000238413 Octopus Species 0.000 description 1
- 239000004793 Polystyrene Substances 0.000 description 1
- 206010041235 Snoring Diseases 0.000 description 1
- 229920000147 Styrene maleic anhydride Polymers 0.000 description 1
- XTXRWKRVRITETP-UHFFFAOYSA-N Vinyl acetate Chemical compound CC(=O)OC=C XTXRWKRVRITETP-UHFFFAOYSA-N 0.000 description 1
- MCMNRKCIXSYSNV-UHFFFAOYSA-N ZrO2 Inorganic materials O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 238000005054 agglomeration Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 150000001336 alkenes Chemical class 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 239000013040 bath agent Substances 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000005422 blasting Methods 0.000 description 1
- 229920002301 cellulose acetate Polymers 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- GWFAVIIMQDUCRA-UHFFFAOYSA-L copper(ii) fluoride Chemical compound [F-].[F-].[Cu+2] GWFAVIIMQDUCRA-UHFFFAOYSA-L 0.000 description 1
- 229910052593 corundum Inorganic materials 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 229920005994 diacetyl cellulose Polymers 0.000 description 1
- 235000014113 dietary fatty acids Nutrition 0.000 description 1
- 239000000975 dye Substances 0.000 description 1
- 238000010894 electron beam technology Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000194 fatty acid Substances 0.000 description 1
- 229930195729 fatty acid Natural products 0.000 description 1
- 150000004665 fatty acids Chemical class 0.000 description 1
- 150000004673 fluoride salts Chemical class 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 239000008273 gelatin Substances 0.000 description 1
- 229920000159 gelatin Polymers 0.000 description 1
- 235000019322 gelatine Nutrition 0.000 description 1
- 235000011852 gelatine desserts Nutrition 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 150000004678 hydrides Chemical class 0.000 description 1
- 150000002484 inorganic compounds Chemical class 0.000 description 1
- 229910010272 inorganic material Inorganic materials 0.000 description 1
- 239000011147 inorganic material Substances 0.000 description 1
- 150000004694 iodide salts Chemical class 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 229910001635 magnesium fluoride Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000006224 matting agent Substances 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 229910001092 metal group alloy Inorganic materials 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 229910052976 metal sulfide Inorganic materials 0.000 description 1
- 125000005397 methacrylic acid ester group Chemical group 0.000 description 1
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 229910052755 nonmetal Inorganic materials 0.000 description 1
- 150000002843 nonmetals Chemical class 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- JRZJOMJEPLMPRA-UHFFFAOYSA-N olefin Natural products CCCCCCCC=C JRZJOMJEPLMPRA-UHFFFAOYSA-N 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 239000005011 phenolic resin Substances 0.000 description 1
- 239000004014 plasticizer Substances 0.000 description 1
- 229920000205 poly(isobutyl methacrylate) Polymers 0.000 description 1
- 229920002401 polyacrylamide Polymers 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229920000139 polyethylene terephthalate Polymers 0.000 description 1
- 239000005020 polyethylene terephthalate Substances 0.000 description 1
- 229920000098 polyolefin Polymers 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
- 229920002689 polyvinyl acetate Polymers 0.000 description 1
- 239000011118 polyvinyl acetate Substances 0.000 description 1
- 239000004800 polyvinyl chloride Substances 0.000 description 1
- 229920000915 polyvinyl chloride Polymers 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 238000001454 recorded image Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000004544 sputter deposition Methods 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
- 150000003568 thioethers Chemical class 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 239000012780 transparent material Substances 0.000 description 1
- 238000007738 vacuum evaporation Methods 0.000 description 1
- 229910001845 yogo sapphire Inorganic materials 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
- G11B7/252—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers
- G11B7/257—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers of layers having properties involved in recording or reproduction, e.g. optical interference layers or sensitising layers or dielectric layers, which are protecting the recording layers
- G11B7/2578—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers of layers having properties involved in recording or reproduction, e.g. optical interference layers or sensitising layers or dielectric layers, which are protecting the recording layers consisting essentially of inorganic materials
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
- G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material
- G11B7/241—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material
- G11B7/242—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of recording layers
- G11B7/243—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of recording layers comprising inorganic materials only, e.g. ablative layers
- G11B2007/24302—Metals or metalloids
- G11B2007/24312—Metals or metalloids group 14 elements (e.g. Si, Ge, Sn)
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
- G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material
- G11B7/241—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material
- G11B7/242—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of recording layers
- G11B7/243—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of recording layers comprising inorganic materials only, e.g. ablative layers
- G11B2007/24318—Non-metallic elements
- G11B2007/24324—Sulfur
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
- G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material
- G11B7/241—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material
- G11B7/252—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers
- G11B7/257—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers of layers having properties involved in recording or reproduction, e.g. optical interference layers or sensitising layers or dielectric layers, which are protecting the recording layers
- G11B2007/25705—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers of layers having properties involved in recording or reproduction, e.g. optical interference layers or sensitising layers or dielectric layers, which are protecting the recording layers consisting essentially of inorganic materials
- G11B2007/25706—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers of layers having properties involved in recording or reproduction, e.g. optical interference layers or sensitising layers or dielectric layers, which are protecting the recording layers consisting essentially of inorganic materials containing transition metal elements (Zn, Fe, Co, Ni, Pt)
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
- G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material
- G11B7/241—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material
- G11B7/252—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers
- G11B7/257—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers of layers having properties involved in recording or reproduction, e.g. optical interference layers or sensitising layers or dielectric layers, which are protecting the recording layers
- G11B2007/25705—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers of layers having properties involved in recording or reproduction, e.g. optical interference layers or sensitising layers or dielectric layers, which are protecting the recording layers consisting essentially of inorganic materials
- G11B2007/25715—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers of layers having properties involved in recording or reproduction, e.g. optical interference layers or sensitising layers or dielectric layers, which are protecting the recording layers consisting essentially of inorganic materials containing oxygen
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
- G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material
- G11B7/241—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material
- G11B7/252—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers
- G11B7/253—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers of substrates
- G11B7/2533—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers of substrates comprising resins
- G11B7/2534—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 polycarbonates [PC]
Landscapes
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Thermal Transfer Or Thermal Recording In General (AREA)
- 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）
本発明は高エネルギー密度の光ビームを用いて情報を記
録するための光情報記録媒体に関するものである。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to an optical information recording medium for recording information using a high energy density light beam.
従来、レーザ等の高エネルギー密度の光ビームを用いる
記録材料としては、銀塩等の感光材料の他に次のような
熱的記録材料がある。この熱的記録材料に於いては、記
録層は高い光学濃度を有し、照射される高エネルギー密
度の光ビームを吸収し局所的な温度上昇を生じ、融解、
蒸発、凝集等の熱的変形をして、その光照射された部分
が除去されることあるいは、結晶から非晶質への相転移
などによって、非照射部分圧対して光学的濃度差、光反
射率等の光学特性の変化を生じることにより情報が記録
されるものである。このような熱的記録材料は一般に現
像、定着等の処理を必要としないこと、通常の室内光で
は記録されないため暗室操作が不要であること、高コン
トラストの画像が得られること、情報の追加記録（アド
オン）が可能であること等の利点を有する。Conventionally, as recording materials using a high energy density light beam such as a laser, there are the following thermal recording materials in addition to photosensitive materials such as silver salts. In this thermal recording material, the recording layer has a high optical density, absorbs the irradiated high energy density light beam, causes a local temperature rise, and melts.
The irradiated part is removed due to thermal deformation such as evaporation or agglomeration, or the phase transition from crystal to amorphous causes an optical density difference and light reflection compared to the non-irradiated part pressure. Information is recorded by causing a change in optical properties such as optical characteristics. Such thermal recording materials generally do not require processing such as developing or fixing, do not record in normal room light and therefore do not require darkroom operation, provide high contrast images, and are capable of recording additional information. (add-on).
一般にこのような熱的記録材料への記録方法は、記録す
べき情報を電気的な時系列信号に変換し、その信号に応
じて強度変調されたレーザビームでその記録材料上を走
査させて行なう場合が多い。Generally, the recording method on such thermal recording materials involves converting the information to be recorded into an electrical time-series signal, and scanning the recording material with a laser beam whose intensity is modulated according to the signal. There are many cases.
この場合、リアルタイムで記録画像が得られるという利
点を有する。This case has the advantage that recorded images can be obtained in real time.
熱的記録材料は上記の様なユニークな特長を有するため
に、従来数多くの用途、例えば印刷用リスフィルムの代
用、ファクシミリ用記録材料、■Ｃ用フ゛１トマスク、
マイクロフィルム等への応用が試みられ、一部実用化の
段階に到達している。このような数多くの用途・応用が
あるために、記録材料開発に関し、多くの機関により活
発に研究がなされてきており、記録層に用いる材料につ
いても、金属、プラスティック、染料等につき数多くの
提案がなされてきている。具体的には、例えばＭ 、
Ｌ 、、Ｌｅｖｅｎｅ らの著による“Ｅｌｅｃｔｒｏ
ｎＩｏｎ ａｎｄ Ｌａ５ｅｒ Ｂｅａｍ Ｔｅｃｈｎ
ｏｌｏｇｙ”第１／回シンポジウムの記録（／９Ａり年
）、Ｅｌｅｃｔｒｏｎｉｃｓ誌（／り１１年３月ｌＩ日
）第ｔｏ頁、Ｄ 、Ｍａｙｄａｎ 著”ＴｈｅＤｅｌ！
Ｓｙｓｔｅｍ Ｔｅｃｈｎｉｃａｌ Ｊｏｕｒｎａｌ”
誌ｊ。Because thermal recording materials have the above-mentioned unique features, they have been used in many ways, such as as a substitute for lithographic film for printing, recording materials for facsimile, photomasks for C, etc.
Applications to microfilm, etc. have been attempted, and some have reached the stage of practical application. Because of these numerous uses and applications, many institutions are actively researching the development of recording materials, and many proposals have been made regarding the materials used for the recording layer, such as metals, plastics, and dyes. It has been done. Specifically, for example, M,
“Electro
nIon and La5er Beam Techn
"Record of the 1st Symposium on "The Del!
System Technical Journal”
magazine j.
巻（ｌり７１年）第１７Ａ／頁、ｃ、ｏ。Volume (1971) No. 17A/page, c, o.
Ｃａｒｌｓｏｎ著“５ｃｉｅｎｃｅ”誌第１ｊ１１巻（
／り３６年）第１ｓｒｏ頁等に記載されている。Carlson, “5science”, Volume 1j11 (
/ri 36) is described on the 1st sro page etc.
（従来技術）
上記文献等に示されている材料を、実用システムの中に
組み入れるためには、換言するならば感材としての実用
性を賦与するためには、更に支持体、記録層、保護層等
につき数多くの改良が必要とされ、実際に過去において
数多くの特許、特許出願等がなされている。その中で最
も多くの努力が払われてきたのは記録感度の向上にある
と言ってよい。金属薄膜を用いた記録材料につき、過去
における高感度化のための努力がどのようになされてき
たかを概観すると以下の如くになろう。(Prior art) In order to incorporate the materials shown in the above-mentioned documents into a practical system, in other words, in order to give them practicality as a sensitive material, it is necessary to prepare a support, a recording layer, a protective layer, etc. Numerous improvements are required regarding the layers, and in fact, numerous patents and patent applications have been filed in the past. It can be said that the most effort has been made to improve recording sensitivity. An overview of past efforts to increase the sensitivity of recording materials using thin metal films can be summarized as follows.
即ち、一般にＢ１Ｘ８ｎ、Ｉｎ、Ａβ、Ｃｒ等の金属薄
膜を用いたものは高解像力、高コントラスト等の点で優
れた性能を有するがその反面レーザ光に対する光反射率
が３０％以上のものが多く、レーザ光のエネルギーを有
効に利用することが出来ないため記録に要する光エネル
ギーが大きく、従って高速走査で記録するには大出力の
レーザ光源が必要となシ、そのため記録装置が大型且つ
高価なものになるという欠点を有している。そこで記録
感度の高い記録材料がいくつか探究されている。たとえ
ば特公昭！４−１１０１１７７号公報に、Ｓｅ、Ｂｉ、
Ｇｅから成る構成の記録材料が記載されている。ここで
Ｇ’ｅの層はＢ１の層の照射光に対する反射率を低下さ
せるものであり、Ｓｊｌｍは蒸発し易い層であり、いず
れもＢｉ単層の場合よシも少ないエネルギーによって主
なる記録層であるＢｉ層の熱的な変形を促進させる。さ
らに反射減少ないし、反射防止をするだめの層は特開昭
ｊＯ−／ｊ／／ｊ／号公報や特公昭３１−／４Ａλｔ２
号公報にも記載されている。また記録層とその支持体と
の間の熱伝導を減少させる層を設けたものは特開昭７０
−／Ｊ４Ｊ７号公報や特開昭ｊ／−／６０２６号公報に
記載されている。また特開昭ｊ／−７１２Ｊｔ号公報お
よび特開昭５．２−．２ｏｔｓ１号公報にはある種の金
属硫化物、金属ぶつ化物あるいは金属酸化物を金属と重
層あるいは混合した記録層が記載されている。また特開
昭３≠−５７≠λ号公報には無機物質と有機物質とを混
合した記録層が記載されている。さらに、特開昭ｚｒ−
夕ｊ２り２号公報には、基板と記録層間に薄い酸化物層
を設け、界面力を改良して記録感度を上昇させる光記録
媒体が記載されている。That is, in general, those using metal thin films such as B1X8n, In, Aβ, Cr, etc. have excellent performance in terms of high resolution and high contrast, but on the other hand, many have a light reflectance of 30% or more for laser light. Since the energy of laser light cannot be used effectively, the optical energy required for recording is large, and therefore a high-output laser light source is required to record with high-speed scanning.As a result, the recording device is large and expensive. It has the disadvantage of becoming a thing. Therefore, several recording materials with high recording sensitivity are being explored. For example, Tokko Akira! 4-1101177, Se, Bi,
A recording material of composition consisting of Ge is described. Here, the layer G'e reduces the reflectance of the layer B1 to the irradiated light, and the layer Sjlm is a layer that evaporates easily. Thermal deformation of the Bi layer is promoted. Furthermore, the layer for reducing or preventing reflection is described in Japanese Patent Application Laid-Open No. 1996/1999/4Aλt2.
It is also stated in the publication. In addition, a layer provided with a layer for reducing heat conduction between the recording layer and its support was disclosed in Japanese Patent Application Laid-open No. 70
-/J4J7 and JP-A-Shoj/-/6026. Also, Japanese Patent Application Laid-open No. Shoj/-712Jt and Japanese Patent Laid-Open No. 5.2-. 2ots1 publication describes a recording layer in which a certain metal sulfide, metal bombide, or metal oxide is layered or mixed with a metal. Further, Japanese Patent Application Laid-open No. 3≠-57≠λ describes a recording layer containing a mixture of an inorganic substance and an organic substance. In addition, Tokukai Sho Zr-
Japanese Patent No. 2 J2 describes an optical recording medium in which a thin oxide layer is provided between a substrate and a recording layer to improve interfacial force and increase recording sensitivity.
以上概観した如く、高感度化に関するものだけでも数多
くの努力が過去に払われてきており、前述した如く、一
部実用化の段階まで性能が向上してきでいる。然しなか
ら、記録材料を用いるシステム及びその周辺技術の進歩
もあり、新規の応用・用途に用いる記録材料のみならず
、前述した従来の用途に用いる記録材料に関しても、更
に高度の性能が強く要求されてきているのが現状である
。As outlined above, many efforts have been made in the past to increase sensitivity, and as mentioned above, the performance has improved to the point where some of them can be put to practical use. However, with advances in systems that use recording materials and their peripheral technologies, there is a strong demand for even higher performance not only for recording materials used in new applications and uses, but also for recording materials used in the conventional applications mentioned above. The current situation is that this has been the case.
特に、光デイスクメモリーの如く、新しい応用・用途に
熱的記録材料を用いる場合、高性能化に対する要求は非
常に強く、過去において開示された記録材料でこれらの
要求を満足させることは実質的に困難であった。In particular, when thermal recording materials are used for new applications such as optical disk memories, there are very strong demands for higher performance, and it is virtually impossible to satisfy these demands with the recording materials disclosed in the past. It was difficult.
（発明の目的）
本発明の目的は下記（１）〜（７）を満足する記録媒体
を得ることにある。(Object of the Invention) An object of the present invention is to obtain a recording medium that satisfies the following (1) to (7).
（１）高速データ書込みを可能にするために高感度であ
ること。(1) High sensitivity to enable high-speed data writing.
（２〉 光学系を簡易化する上で、情報の反射読取りが
好ましく、それを行うためには記録層の光反射率が高い
こと。(2> In order to simplify the optical system, it is preferable to read information by reflection, and in order to do this, the light reflectance of the recording layer must be high.
（３）記録情報の長期安定性（最低１０年以上のアーカ
イパル性）を可能とする化学的安定性を有すること。(3) It must have chemical stability that enables long-term stability of recorded information (archival stability for at least 10 years).
（４）高密度記録を可能とするための高解像力を有する
こと。(4) It must have high resolution to enable high-density recording.
（５）読み取りの際の８／Ｎ比を大きくするために、記
録ビットの形状が良好であること（そのためには、記録
層の粒状性等の不均一性は好ましくない）。(5) In order to increase the 8/N ratio during reading, the shape of the recording bit must be good (for this purpose, non-uniformity such as graininess of the recording layer is not preferable).
（６） 層迄適性が優れていること（例えば蒸着中の蒸
発速度が安定しており、また蒸着中に分解等を起こさな
いこと）。(6) Excellent layer suitability (for example, the evaporation rate during vapor deposition is stable and no decomposition occurs during vapor deposition).
（７）無毒であること。(7) Be non-toxic.
これら以外にも数多くの要求性能があるが、ここでは省
略する。There are many other required performances in addition to these, but they are omitted here.
上記諸性能の中、（１）と（２）は、前述した如く高反
射率と高感度とは一般に相反する関係がある。このため
、高反射率のままさらに記録感度を上げるためには、特
開昭ｊ′ｇ−１３２タコ号公報に開示されていＺ、如く
、基板−記録層間の界面力を変化させる方法が有効とな
る。しかし、本発明者らが上記公報に開示されている酸
化物について詳細に検討したところ、実施例で後述する
如く解像力の上昇はみられたが記録感度の点で大きな効
果がみいだせなかった。Among the above various performances, (1) and (2) are generally in a contradictory relationship with high reflectance and high sensitivity, as described above. Therefore, in order to further increase the recording sensitivity while maintaining a high reflectance, it is effective to change the interfacial force between the substrate and the recording layer, as disclosed in Japanese Patent Application Laid-Open No. Shoj'g-132 Octopus. Become. However, when the present inventors conducted a detailed study on the oxide disclosed in the above-mentioned publication, an increase in resolution was observed as will be described later in Examples, but no significant effect was found in terms of recording sensitivity.
（発明の構成）
そこで本発明者らが研究を重ね、支持体と記録層間に様
々な種類の無機化合物を設け、検討を行ったところ、Ｍ
２Ｏ３を用いると、上記公報に開示されている光記録媒
体より高感度になることを見い出し、本発明に至ったも
のである。すなわち本発明の好ましい記録層構成として
は、支持体と記録層間に、Ｍ２Ｏ３層を設けたものであ
る。(Structure of the Invention) Therefore, the present inventors conducted repeated research, provided various types of inorganic compounds between the support and the recording layer, and found that M
It was discovered that the use of 2O3 provides higher sensitivity than the optical recording medium disclosed in the above-mentioned publication, leading to the present invention. That is, a preferred recording layer configuration of the present invention is one in which an M2O3 layer is provided between the support and the recording layer.
また、本発明の好ましい態様としてはＭ ｏ ０３層の
膜厚が１Ｏ−３０ＯＡ、より好ましくは３０〜３００ｈ
、最も好ましくは３０−２００にであることを特徴とす
る光情報記録媒体である。Further, in a preferred embodiment of the present invention, the thickness of the M o 03 layer is 10-30OA, more preferably 30-300h.
, most preferably 30-200.
このようにＭ ｏ ０３層を用いた光記録媒体では、基
板と記録層の界面力の変化によシ感度上昇しているため
、Ａｒレーザ等の可視光から半導体レーザの近赤外の波
長領域にわたって感度上昇の効果がある。また、本発明
ではＭ ｏ Ｏａ層を単独で設けるだけでなく基板と記
録層の界面力を変化させない範囲テＳ Ｉ ＯＡ １１
２０３ ＸＧ ｅ ＯＸ２〜
Ｉ ｎ ２０ ａ等の化合物を混合させて設けてもよい
。As described above, in optical recording media using the M o 03 layer, the sensitivity increases due to changes in the interfacial force between the substrate and the recording layer. It has the effect of increasing sensitivity over the entire range. In addition, in the present invention, not only the MoOa layer is provided alone, but also a range of materials that does not change the interfacial force between the substrate and the recording layer.
A mixture of compounds such as 203 XG e OX2 to In 20 a may be provided.
なお、本発明のＭ ｏ Ｏａ層を設ける方法としては蒸
着（抵抗加熱、電子ビーム加熱）スノξツタリング、イ
オンプンーティング等の種々の方法を用いることができ
るが、もちろん上記方法に限定されるものではない。本
発明に用いられる記録ノーとしては、特に制限はなく、
当該技術分野で用いられる材料、例えばＴｅ、ＺｎＸＳ
ｎ、Ｉｎ等の金属あるいはＢ Ｊ 、Ａ Ｓ Ｎ ｂ
ｂ等の半金属あるいはＧｅ、Ｓｉ等の半導体や、これら
の合金又は組み合わせとして用いられる。これらの金属
、半金層および半導体は、酸化物、ヨウ化物、フッ化物
および硫化物等の化合物として用いてもよく、またこれ
らの化合物の共蒸着物として用いてもよい。In addition, as a method for providing the M o Oa layer of the present invention, various methods such as vapor deposition (resistance heating, electron beam heating), snoring, ion punching, etc. can be used, but the method is of course limited to the above-mentioned methods. It's not a thing. There are no particular restrictions on the record number used in the present invention,
Materials used in the art, such as Te, ZnXS
Metals such as n, In or B J , A S N b
It is used as a semimetal such as b, a semiconductor such as Ge or Si, or an alloy or combination thereof. These metals, metal alloy layers, and semiconductors may be used as compounds such as oxides, iodides, fluorides, and sulfides, or may be used as co-deposited products of these compounds.
特に８ｎ、Ｇｅ、Ｉｎ等を８ｎ８ＸＵｅＳ。Especially 8n, Ge, In, etc. as 8n8XUeS.
Ｚ ｒ ０２等の化合物と共蒸着した場合、感度や光反
射率等の光学特性の経時安定性の点で好ましく、また本
発明のＭ ｏ Ｏａ層と組合せて用いると特に高い感度
が得られる。When it is co-deposited with a compound such as Z r 02, it is preferable in terms of stability over time of optical properties such as sensitivity and light reflectance, and particularly high sensitivity can be obtained when used in combination with the M o Oa layer of the present invention.
本発明に用いられる支持体としては、ポリメチルメタク
リレートおよびその共重合体、ボリヵーボ゛ネート、ポ
リエチレンテレフタレート等のプラステラ゛り、ガラス
、板状もしくは箔状の金属環一般の支持体が用いられ、
厚み、あるいは形状等、特に限定されるものではない。The supports used in the present invention include plastics such as polymethyl methacrylate and copolymers thereof, polycarbonate, polyethylene terephthalate, glass, and general supports of metal rings in the form of plates or foils.
There are no particular limitations on the thickness, shape, etc.
また、本発明のＭ ｏ Ｏｓ Ｊ−と支持体との間に、
さらに高感度にするため、あるいは記録層がはがれない
ようにする目的のために適当な中間層を塗布、蒸着その
他の手段によって設けてもよい。たとえばハロゲン化ポ
リオレフィン、ハロゲン化ポリヒドロキシスチレン、塩
化ゴム、ニトロセルロースなどの有機物質、Ｓ ｓ Ｏ
％ Ｓ ｒ Ｏｚ等の非金属が好ましい。この中間層の
厚さは、Ｏ，ＯＳμｍ−６０μｍが適当であるが、特に
好ましくは０゜２μｍ〜３０μｍである。Moreover, between the Mo Os J- of the present invention and the support,
In order to further increase the sensitivity or to prevent the recording layer from peeling off, a suitable intermediate layer may be provided by coating, vapor deposition or other means. For example, organic substances such as halogenated polyolefin, halogenated polyhydroxystyrene, chlorinated rubber, nitrocellulose, S s O
Non-metals such as % S r Oz are preferred. The thickness of this intermediate layer is suitably O,OS .mu.m-60 .mu.m, particularly preferably 0.2 .mu.m to 30 .mu.m.
本発明の記録材料においては、支持体上に設けられた前
記記録層上に無機物質又は有機質からなる保護層を設け
てもよい。In the recording material of the present invention, a protective layer made of an inorganic or organic substance may be provided on the recording layer provided on the support.
記録層上に保護層を設けることは、記録材料としての耐
久性、機械的強度、経時安定性の改善等に有効であって
本発明としては好ましい態様の一つであることは勿論で
ある。Providing a protective layer on the recording layer is effective in improving the durability, mechanical strength, stability over time, etc. of the recording material, and is of course one of the preferred embodiments of the present invention.
保護層としては無機物質又は有機物質のいずれでもよい
が、使用する高エネルギー密度の光ビームに対して透過
性であること、機械的強度が大であること、記録層とし
て反応しにくいこと、被膜性の良いこと、製造が容易な
こと等が要求される。The protective layer may be made of either an inorganic or organic material, but it must be transparent to the high-energy density light beam used, have high mechanical strength, be difficult to react as a recording layer, and be coated. It is required to have good properties and be easy to manufacture.
本発明に用いられる保頼層としては、無機物質又は有機
物質のいずれでもよいが、例えば無機の保護層としては
、Ａｌ２Ｏ３、ＳｉＯ□、ＳｉＯｌＭｇＯ，ＺｎＯ１Ｔ
＋ ０２、Ｚ ｒ ０２、ＭｇＦ２、Ｃｕ Ｆ ２等
の透明な物質が望ましい。これらは真空蒸着、スパッタ
リング、イオンブレーティング等で形成される。The protection layer used in the present invention may be made of either an inorganic or an organic material. For example, as an inorganic protective layer, Al2O3, SiO□, SiOlMgO, ZnO1T
Transparent materials such as +02, Zr02, MgF2, CuF2 are preferred. These are formed by vacuum evaporation, sputtering, ion blasting, etc.
また有機物質を保護層として用いることは優れた方法で
ある。かかる保護層として用いられる樹脂は種々のもの
が可能であるが、例えばポリスチレン、スチレン−無水
マレイン酸樹脂のごときスチレン系樹脂、ポリ酢酸ビニ
ル、ポリビテルアルコール、ブタノール、ポリヒニルホ
セマールノ如き酢酸ビニル系樹脂、ポリメタクリル酸イ
ソブチル、ポリメタクリル酸メチルの如きメタクリヤ酸
エステル系樹脂、ポリダイア七トンアクリルアミド、ポ
リアクリルアミドの如きアミド系樹脂、エチルセルロー
ス、酢酸ラフ酸セルロース、硝酸セルロース、ジアセチ
ルセルロースの如キモルロース系樹脂、ポリ塩化ビニル
、塩素化ポリエチレンｏ如ｓポリハロゲン化オレフィン
、フェノール樹脂、可溶性ポリエステル、可溶性ナイロ
ン、ゼラチン等及びこれらの共重合物等から選ばれる。It is also an excellent method to use organic substances as a protective layer. Various resins can be used as the protective layer, and examples thereof include polystyrene, styrene resins such as styrene-maleic anhydride resin, polyvinyl acetate, polybiter alcohol, butanol, and polyhinylhosemalone. Vinyl acetate resins, polyisobutyl methacrylate, methacrylic acid ester resins such as polymethyl methacrylate, amide resins such as polydiaseptacrylamide and polyacrylamide, molulose such as ethyl cellulose, cellulose acetate rough acid, cellulose nitrate, and diacetyl cellulose. The material is selected from polyvinyl chloride, chlorinated polyethylene, polyhalogenated olefin, phenol resin, soluble polyester, soluble nylon, gelatin, and copolymers thereof.
これらの樹脂は種々の溶剤に溶かして既知の塗布方法に
より塗布することができる。These resins can be dissolved in various solvents and applied by known coating methods.
用いられる溶剤としては各種の浴剤があるが、例えばア
セトン、メチルエチャヶトンミメチルイソフテルケトン
、メチルセロンルブ、エチルセルロース、プチルセロノ
Ｖブ、メチルセロンルアセテート、エチルセロソヤブア
セテート、ブテシセロソヤフアセテート、ヘキサン、シ
クロヘキツーン、エチレンクロライド、メチレンクロ２
イド、ベンゼン、クロルベンゼン、メタノール、エタノ
ール、ブタノール、石油エーテル、ジメチルホルムアミ
ド、シンナー等の中から使用する樹脂に応じて選べば良
い。There are various bath agents that can be used as solvents, such as acetone, methyl isophtelketone, methylseronlube, ethylcellulose, butylseronolub, methylseronruacetate, ethylcellosoyabu acetate, and butecelosoyafu. Acetate, hexane, cyclohextone, ethylene chloride, methylene chloride 2
Depending on the resin used, the resin may be selected from among hydride, benzene, chlorobenzene, methanol, ethanol, butanol, petroleum ether, dimethylformamide, thinner, etc.
これらの樹脂の中には、マット化剤、可塑剤、滑剤など
の各種添加物を目的に応じて添加することが可能であり
、特に炭素原子数がｌ／以上の高級脂肪酸或いは酸アミ
ドを０．／−／、Ｏｗｔ％程度添加することは記録材料
の膜面強度を向上させる点で効果がある。Various additives such as matting agents, plasticizers, and lubricants can be added to these resins depending on the purpose. ．． Adding about /-/, Owt% is effective in improving the film surface strength of the recording material.
また、これらの高級脂肪酸あるいは酸アミドの如き滑剤
は保護層上に通常の方法でθ、ＯＯ／〜ｌμの厚さに塗
布することも可能である。本発明に用いられる保護層の
膜厚は記録材料として要望される膜面強度、経時安定性
、記録感度等から最適の厚さに選ばれるが、特に０．０
’／μ〜ｊＯＯμの膜厚が好ましい。Further, the lubricant such as these higher fatty acids or acid amides can be coated on the protective layer to a thickness of θ, OO/ to lμ by a conventional method. The thickness of the protective layer used in the present invention is selected to be the optimum thickness in consideration of the film surface strength, stability over time, recording sensitivity, etc. required as a recording material, but in particular, 0.0
A film thickness of '/μ to jOOμ is preferable.
保護層の別な形態として、特開昭Ｉｔ−／λ７り弘６号
公報に開示されている如く、記録層とＵＶ硬化樹脂でサ
ンドインチする方法あるいは特開昭！λ−／！ｔＡＯｊ
号公報明細書に開示されている如く、記録層と保護層間
に空気ギャップを設ける形に保護層を形成することも可
能である。特に、記録層を形成した支持体二枚を、シー
シを介して記録層同士を向い合せて固着させた形態（エ
アーサンドイツチタイゾ）は両面記録が可能であり、光
デイスクメモリーの如く大容量の情報記録が要求される
場合には特に最適な形態の一つである。Another form of the protective layer is the method of sandwiching the recording layer with a UV curing resin, as disclosed in Japanese Patent Application Laid-Open No. 1999-11-17/λ7rihiro No. 6, or the method of sandwiching the recording layer with a UV curing resin. λ-/! tAOj
As disclosed in the specification of the above publication, it is also possible to form the protective layer in such a manner that an air gap is provided between the recording layer and the protective layer. In particular, a configuration in which two supports with recording layers formed thereon are fixed together with the recording layers facing each other through a sheath (Air Sun Germany Tizo) is capable of double-sided recording, and has a large capacity similar to optical disk memory. This is one of the most suitable forms especially when information recording is required.
本発明の記録材料は、前述した如く光デイスクメモリー
用途に最適であるが、印刷用リスフィヤムの代用、ファ
クシミリ記録材料、ＩＣフォトマスク、マイクロフィル
ム等に使用可能なことはもちろんであシ、またそれらに
限定されるものでもない。The recording material of the present invention is ideal for optical disk memory applications as described above, but it can also be used as a substitute for printing lithium, facsimile recording materials, IC photomasks, microfilms, etc. It is not limited to.
以下に実施例によシ本発明を具体的に説明する。The present invention will be specifically explained below using examples.
実施例
厚さ／、ｊｍｍのＰＭＭＡ支持体上に、真空度ｊＸ１０
’Ｉ’ｏｒｒの条件下で、純度タタ、タチのＭ ｏ
Ｏａを抵抗加熱方式で蒸着を行った。冷却後、記録層と
なるＩｎとＧｅ８の混合層の蒸着を行った。記録層の混
合率の制御、さらにＭｏＯ３層、記録層の膜厚の制御は
、水晶振動子型の膜厚モニターにより行った。以上のよ
うにして、ＭＯ０３層膜厚１Ｏ−４００Ａ、記録層膜厚
λ７ｊ Ａ （Ｉ ｎ体積パーセントで４．２．５％）
ノ記録媒体を得た。また比較のため上記と同様の方法に
より特開昭ｊ−−２Ｏｒ、２／号公報に開示されている
酸化物としてＭｏｂ、および特開昭ｊざ−５５２２２号
公報に開示されている。酸化物としてＳｉＯを用いた記
録媒体をえた。Example: On a PMMA support with a thickness of /, j mm, a vacuum degree of jX10
Under the conditions of 'I'orr, Purity Tata, Tati's Mo
Oa was deposited using a resistance heating method. After cooling, a mixed layer of In and Ge8 was deposited to become a recording layer. The mixing ratio of the recording layer and the thicknesses of the three MoO layers and the recording layer were controlled using a crystal resonator type film thickness monitor. As described above, the MO03 layer thickness was 10-400A, and the recording layer thickness was λ7jA (In volume percent: 4.2.5%).
A recording medium was obtained. For comparison, Mob, which is disclosed in Japanese Unexamined Patent Publication No. 2 Or, No. 2/1998, and Japanese Unexamined Patent Publication No. 55222, are prepared by the same method as above. A recording medium using SiO as the oxide was obtained.
以上のようにして作製した試料にビーム径７〜２μｍの
Ａｒレーザ光を静止状態で／θＯｎ５ｅｃ照射して、記
録媒体の豊き込みしきい値（レーザ出力）の比較を行っ
た。この際の書き込みしきい値は、光学顕微鏡により判
断を行った。第一図はＭｏＯ３膜厚と書き込みしきい値
の関係を示したもので、ＭｏＯ３膜厚を３ＯＡにすると
急激に感度上昇がみられ、λＯＯＡまで、感度は上昇し
ていく。しかし、それ以上の膜厚にすると感度は再び低
下していく。このように、支持体と記録層間にＭｏＯ３
層を設けることにより、約ＳＯ％の感度上昇がみられた
。The samples prepared as described above were irradiated with an Ar laser beam having a beam diameter of 7 to 2 μm at /θOn5ec in a stationary state, and the enrichment thresholds (laser outputs) of the recording media were compared. The writing threshold at this time was determined using an optical microscope. Figure 1 shows the relationship between the MoO3 film thickness and the writing threshold.When the MoO3 film thickness is increased to 3OA, a rapid increase in sensitivity is observed, and the sensitivity continues to increase up to λOOA. However, when the film thickness is increased beyond that, the sensitivity decreases again. In this way, MoO3 is formed between the support and the recording layer.
By providing the layer, an increase in sensitivity of approximately SO% was observed.
また１、同様にＭｏＯ及びＳｉＯを１００に設けた記録
媒体では解像力の上昇はみられたが、感度上昇の効果は
みられなかった。1. Similarly, in the recording medium in which MoO and SiO were set at 100, an increase in resolution was observed, but no effect of increase in sensitivity was observed.
第′／図は本発明のＭ ｏ Ｏａを設けた記録媒体とＭ
ｏＯ及び８ｉ０を設けた記録媒体の書き込みしきい値を
示したグラフである。Figure '/' shows the recording medium provided with M o Oa of the present invention and M
7 is a graph showing the write threshold of a recording medium provided with oO and 8i0.
Claims (1)
によシ、情報を記録する光情報記録媒体において上記支
持体と記録層間にＭ２Ｏ３層を設けたことを特徴とする
光情報記録媒体。An optical information recording medium for recording information by irradiating a recording layer formed on a support with a laser beam, characterized in that an M2O3 layer is provided between the support and the recording layer. .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59076161A JPS60219097A (en) | 1984-04-16 | 1984-04-16 | Optical information recording medium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59076161A JPS60219097A (en) | 1984-04-16 | 1984-04-16 | Optical information recording medium |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS60219097A true JPS60219097A (en) | 1985-11-01 |
Family
ID=13597333
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP59076161A Pending JPS60219097A (en) | 1984-04-16 | 1984-04-16 | Optical information recording medium |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60219097A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0947351A4 (en) * | 1997-10-17 | 1999-10-06 | ||
| US7276274B2 (en) | 2002-07-04 | 2007-10-02 | Tdk Corporation | Optical recording medium and method for recording and reproducing data |
| US7479363B2 (en) | 2002-04-26 | 2009-01-20 | Tdk Corporation | Optical recording medium and method for optically recording data in the same |
| US7932015B2 (en) * | 2003-01-08 | 2011-04-26 | Tdk Corporation | Optical recording medium |
-
1984
- 1984-04-16 JP JP59076161A patent/JPS60219097A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0947351A4 (en) * | 1997-10-17 | 1999-10-06 | ||
| US6416929B2 (en) * | 1997-10-17 | 2002-07-09 | Kabushiki Kaisha Toyota Chuo Kenkyusho | Memory member |
| US7479363B2 (en) | 2002-04-26 | 2009-01-20 | Tdk Corporation | Optical recording medium and method for optically recording data in the same |
| US7276274B2 (en) | 2002-07-04 | 2007-10-02 | Tdk Corporation | Optical recording medium and method for recording and reproducing data |
| US7932015B2 (en) * | 2003-01-08 | 2011-04-26 | Tdk Corporation | Optical recording medium |
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