JPH029956B2 - - Google Patents
Info
- Publication number
- JPH029956B2 JPH029956B2 JP60112420A JP11242085A JPH029956B2 JP H029956 B2 JPH029956 B2 JP H029956B2 JP 60112420 A JP60112420 A JP 60112420A JP 11242085 A JP11242085 A JP 11242085A JP H029956 B2 JPH029956 B2 JP H029956B2
- Authority
- JP
- Japan
- Prior art keywords
- recording
- film
- concentration
- amorphous
- crystalline
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 230000003287 optical effect Effects 0.000 claims description 25
- 239000000463 material Substances 0.000 claims description 24
- 229910052718 tin Inorganic materials 0.000 claims description 12
- 230000008859 change Effects 0.000 claims description 9
- 239000010409 thin film Substances 0.000 claims description 6
- 239000010408 film Substances 0.000 description 46
- 239000000203 mixture Substances 0.000 description 25
- 230000007704 transition Effects 0.000 description 21
- 230000008018 melting Effects 0.000 description 15
- 238000002844 melting Methods 0.000 description 15
- 229910005939 GeâSn Inorganic materials 0.000 description 10
- 238000002425 crystallisation Methods 0.000 description 10
- 230000008025 crystallization Effects 0.000 description 10
- 238000012360 testing method Methods 0.000 description 9
- 230000002087 whitening effect Effects 0.000 description 9
- 229910052732 germanium Inorganic materials 0.000 description 8
- 239000010410 layer Substances 0.000 description 8
- 238000007740 vapor deposition Methods 0.000 description 6
- 229910018731 SnâAu Inorganic materials 0.000 description 5
- 239000013078 crystal Substances 0.000 description 5
- 230000007423 decrease Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 239000004065 semiconductor Substances 0.000 description 5
- 229910005900 GeTe Inorganic materials 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000005191 phase separation Methods 0.000 description 4
- 239000011241 protective layer Substances 0.000 description 4
- 230000009466 transformation Effects 0.000 description 4
- 229910005793 GeO 2 Inorganic materials 0.000 description 3
- 239000000654 additive Substances 0.000 description 3
- 150000004770 chalcogenides Chemical class 0.000 description 3
- 238000001816 cooling Methods 0.000 description 3
- 238000011156 evaluation Methods 0.000 description 3
- 229910052737 gold Inorganic materials 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 239000012528 membrane Substances 0.000 description 3
- 239000000758 substrate Substances 0.000 description 3
- 229910052714 tellurium Inorganic materials 0.000 description 3
- 238000002834 transmittance Methods 0.000 description 3
- 229910015369 AuTe Inorganic materials 0.000 description 2
- 229910005642 SnTe Inorganic materials 0.000 description 2
- 230000000996 additive effect Effects 0.000 description 2
- 229910052797 bismuth Inorganic materials 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 238000000151 deposition Methods 0.000 description 2
- 230000006866 deterioration Effects 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 238000005204 segregation Methods 0.000 description 2
- 230000035945 sensitivity Effects 0.000 description 2
- 238000010583 slow cooling Methods 0.000 description 2
- 239000004925 Acrylic resin Substances 0.000 description 1
- 229920000178 Acrylic resin Polymers 0.000 description 1
- 229910005898 GeSn Inorganic materials 0.000 description 1
- 238000005280 amorphization Methods 0.000 description 1
- 229910052787 antimony Inorganic materials 0.000 description 1
- 229910052785 arsenic Inorganic materials 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000010894 electron beam technology Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 229910052738 indium Inorganic materials 0.000 description 1
- 229910052745 lead Inorganic materials 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 150000001247 metal acetylides Chemical class 0.000 description 1
- 230000005012 migration Effects 0.000 description 1
- 238000013508 migration Methods 0.000 description 1
- 229920003229 poly(methyl methacrylate) Polymers 0.000 description 1
- 229920000515 polycarbonate Polymers 0.000 description 1
- 239000004417 polycarbonate Substances 0.000 description 1
- 229920005668 polycarbonate resin Polymers 0.000 description 1
- 239000004431 polycarbonate resin Substances 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 239000004926 polymethyl methacrylate Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 229910052711 selenium Inorganic materials 0.000 description 1
- 238000004544 sputter deposition Methods 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 150000004763 sulfides Chemical class 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 229910052716 thallium 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
- G11B7/242—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
-
- 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
- G11B2007/24308—Metals or metalloids transition metal elements of group 11 (Cu, Ag, Au)
-
- 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
- G11B2007/24302—Metals or metalloids
- G11B2007/24316—Metals or metalloids group 16 elements (i.e. chalcogenides, Se, Te)
-
- 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
- G11B2007/25716—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 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
- G11B7/253—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers of substrates
- G11B7/2531—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers of substrates comprising glass
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
- G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material
- G11B7/241—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material
- G11B7/252—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers
- G11B7/253—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers of substrates
- G11B7/2533—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers of substrates comprising resins
- 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]
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S428/00—Stock material or miscellaneous articles
- Y10S428/913—Material designed to be responsive to temperature, light, moisture
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S430/00—Radiation imagery chemistry: process, composition, or product thereof
- Y10S430/141—Direct positive material
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S430/00—Radiation imagery chemistry: process, composition, or product thereof
- Y10S430/146—Laser beam
Landscapes
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Thermal Transfer Or Thermal Recording In General (AREA)
- Optical Record Carriers And Manufacture Thereof (AREA)
Description
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Claims (1)
- ãç¹èš±è«æ±ã®ç¯å²ã ïŒ åºæäžã«ãçžå€åã«ãã€ãŠå åŠå®æ°ãå€åã
ãèšé²èèãèšããå åŠæ å ±èšé²éšæã§ãã€ãŠã TeãGeãSnã®ååæ°ã®æ¯ã第ïŒå³ã® ïŒTe93Ge5Sn2ïŒãïŒTe93Ge2Sn5ïŒã ïŒTe68Ge2Sn30ïŒãïŒTe52Ge18Sn30ïŒã ïŒTe52Ge46Sn2ïŒç¹ã§å²ãŸããé åå ã«ãã€
ãŠãAuã®æ¿åºŠïŒatïŒ ïŒãïŒTexGeySnzïŒnAuoã§è¡š
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ããšãç¹åŸŽãšããå åŠæ å ±èšé²éšæã ïŒ TeãGeãSnã®ååæ°æ¯ã第ïŒå³ã® ïŒTe92Ge5Sn3ïŒãïŒTe92Ge3Sn5ïŒã ïŒTe68Ge3Sn29ïŒãïŒTe74Ge23Sn3ïŒç¹ã§å²ãŸ
ããé åå ã§ãã€ãŠãAuæ¿åºŠïœã®å€ã10ã35at
ïŒ ã§ããããšãç¹åŸŽãšããç¹èš±è«æ±ã®ç¯å²ç¬¬ïŒé
èšèŒã®å åŠæ å ±èšé²éšæã ïŒ TeãGeãSnã®ååæ°æ¯ã第ïŒå³ã® ïŒTe68Ge3Sn29ïŒãïŒTe70Ge10Sn20ïŒã ïŒTe68Ge29Sn3ïŒãïŒTe52Ge45Sn3ïŒã ïŒïŒTe52Ge19Sn29ïŒç¹ã§å²ãŸããé åå ã§ãã€
ãŠãAuæ¿åºŠïœã®å€ïŒã15atïŒ ã§ããããšãç¹åŸŽ
ãšããç¹èš±è«æ±ã®ç¯å²ç¬¬ïŒé èšèŒã®å åŠæ å ±èšé²
éšæã
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60112420A JPS61270190A (ja) | 1985-05-24 | 1985-05-24 | å åŠæ å ±èšé²éšæ |
| US07/320,789 US4939013A (en) | 1985-05-24 | 1989-03-09 | Optical information storing medium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60112420A JPS61270190A (ja) | 1985-05-24 | 1985-05-24 | å åŠæ å ±èšé²éšæ |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61270190A JPS61270190A (ja) | 1986-11-29 |
| JPH029956B2 true JPH029956B2 (ja) | 1990-03-06 |
Family
ID=14586201
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60112420A Granted JPS61270190A (ja) | 1985-05-24 | 1985-05-24 | å åŠæ å ±èšé²éšæ |
Country Status (2)
| Country | Link |
|---|---|
| US (1) | US4939013A (ja) |
| JP (1) | JPS61270190A (ja) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0464176U (ja) * | 1990-10-11 | 1992-06-01 |
Families Citing this family (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5294523A (en) * | 1988-08-01 | 1994-03-15 | Matsushita Electric Industrial Co., Ltd. | Optical information recording medium |
| JPH02147289A (ja) * | 1988-11-29 | 1990-06-06 | Matsushita Electric Ind Co Ltd | å åŠæ å ±èšé²éšæ |
| KR100264705B1 (ko) * | 1989-01-11 | 2000-09-01 | ìŒì€ì¹Žì íë°ìí€ | êŽ ëì€í¬ ë° ìŽì ì ì¡°ë°©ë² |
| US5100700A (en) * | 1989-03-10 | 1992-03-31 | Ricoh Company, Ltd. | Information recording medium |
| SG47741A1 (en) * | 1990-03-22 | 1998-04-17 | Seagate Technology | A rotary actuator head positioning apparatus and dual pivot apparatus for a disk drive |
| JPH0494965A (ja) * | 1990-08-13 | 1992-03-27 | Ricoh Co Ltd | å æ å ±èšé²åªäœ |
| US5335219A (en) * | 1991-01-18 | 1994-08-02 | Ovshinsky Stanford R | Homogeneous composition of microcrystalline semiconductor material, semiconductor devices and directly overwritable memory elements fabricated therefrom, and arrays fabricated from the memory elements |
| JP2709887B2 (ja) * | 1992-06-12 | 1998-02-04 | ãã£ãŒãã£ãŒã±ã€æ ªåŒäŒç€Ÿ | å èšé²åªäœããã³ãã®è£œé æ¹æ³ |
| US5785828A (en) | 1994-12-13 | 1998-07-28 | Ricoh Company, Ltd. | Sputtering target for producing optical recording medium |
| US6022605A (en) * | 1997-02-28 | 2000-02-08 | Kao Corporation | Optical recording medium and recording/erasing method therefor |
| EP0960419B1 (en) * | 1997-12-11 | 2007-02-07 | Koninklijke Philips Electronics N.V. | Rewritable optical information medium |
| GB2336463B (en) | 1998-04-16 | 2000-07-05 | Ricoh Kk | Optical recording method for a rewritable phase-change optical recording medium |
| JP2000339751A (ja) | 1999-06-01 | 2000-12-08 | Ricoh Co Ltd | çžå€å圢å èšé²åªäœ |
| DE60125993T2 (de) | 2000-09-28 | 2007-10-18 | Ricoh Co., Ltd. | Optisches Aufzeichnungsmedium, Verfahren zu dessen Herstellung und Verfahren und Vorrichtung zum Aufzeichnen auf oder Lesen von diesem Medium |
| DE60235972D1 (de) * | 2001-03-06 | 2010-05-27 | Mitsubishi Kagaku Media Co Ltd | Optisches informationsaufzeichnungsmaterial und aufzeichnungs-/erlöschungsverfahren |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3971874A (en) * | 1973-08-29 | 1976-07-27 | Matsushita Electric Industrial Co., Ltd. | Optical information storage material and method of making it |
| JPS5764596A (en) * | 1980-10-06 | 1982-04-19 | Fuji Photo Film Co Ltd | Heat mode recording material |
| JPS57189894A (en) * | 1981-05-20 | 1982-11-22 | Fuji Photo Film Co Ltd | Thermal recording material |
| JPS5854338A (ja) * | 1981-09-28 | 1983-03-31 | Matsushita Electric Ind Co Ltd | å åŠèšé²åªäœããã³èšé²æ¹æ³ |
| US4477819A (en) * | 1982-06-14 | 1984-10-16 | International Business Machines Corporation | Optical recording medium |
| JPS60180885A (ja) * | 1984-02-29 | 1985-09-14 | Fujitsu Ltd | æ å ±èšé²åªäœ |
| US4587209A (en) * | 1984-03-28 | 1986-05-06 | Matsushita Electric Industrial Co., Ltd. | Optical information recording member comprising Au, TeO2 and Te |
| CA1245762A (en) * | 1984-06-15 | 1988-11-29 | Noboru Yamada | Reversible optical information recording medium |
| US4621032A (en) * | 1985-07-29 | 1986-11-04 | Energy Conversion Devices, Inc. | Method of forming a data storage medium and data storage device by congruent sublimation |
-
1985
- 1985-05-24 JP JP60112420A patent/JPS61270190A/ja active Granted
-
1989
- 1989-03-09 US US07/320,789 patent/US4939013A/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0464176U (ja) * | 1990-10-11 | 1992-06-01 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS61270190A (ja) | 1986-11-29 |
| US4939013A (en) | 1990-07-03 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |