NL193334C - Informatie-opslagmedium. - Google Patents
Informatie-opslagmedium. Download PDFInfo
- Publication number
- NL193334C NL193334C NL7901448A NL7901448A NL193334C NL 193334 C NL193334 C NL 193334C NL 7901448 A NL7901448 A NL 7901448A NL 7901448 A NL7901448 A NL 7901448A NL 193334 C NL193334 C NL 193334C
- Authority
- NL
- Netherlands
- Prior art keywords
- intensity
- layer
- absorption layer
- storage medium
- light beam
- Prior art date
Links
- 238000010521 absorption reaction Methods 0.000 claims description 58
- 239000000758 substrate Substances 0.000 claims description 43
- 239000000463 material Substances 0.000 claims description 30
- 239000000969 carrier Substances 0.000 claims description 7
- CLBRCZAHAHECKY-UHFFFAOYSA-N [Co].[Pt] Chemical compound [Co].[Pt] CLBRCZAHAHECKY-UHFFFAOYSA-N 0.000 claims description 3
- 230000002745 absorbent Effects 0.000 claims description 3
- 239000002250 absorbent Substances 0.000 claims description 3
- 230000010287 polarization Effects 0.000 claims description 3
- KYAZRUPZRJALEP-UHFFFAOYSA-N bismuth manganese Chemical compound [Mn].[Bi] KYAZRUPZRJALEP-UHFFFAOYSA-N 0.000 claims 1
- 239000010410 layer Substances 0.000 description 104
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 12
- 230000035945 sensitivity Effects 0.000 description 7
- 238000009792 diffusion process Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 230000008569 process Effects 0.000 description 6
- 239000000377 silicon dioxide Substances 0.000 description 6
- 235000012239 silicon dioxide Nutrition 0.000 description 6
- 238000004364 calculation method Methods 0.000 description 5
- 239000010941 cobalt Substances 0.000 description 5
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 5
- 238000010276 construction Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 239000002184 metal Substances 0.000 description 5
- 229910000531 Co alloy Inorganic materials 0.000 description 4
- 230000007423 decrease Effects 0.000 description 4
- 230000008020 evaporation Effects 0.000 description 4
- 238000001704 evaporation Methods 0.000 description 4
- 239000011521 glass Substances 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 4
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 4
- 230000009467 reduction Effects 0.000 description 4
- 238000001228 spectrum Methods 0.000 description 4
- 229910001260 Pt alloy Inorganic materials 0.000 description 3
- 229910052782 aluminium Inorganic materials 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 3
- 239000002131 composite material Substances 0.000 description 3
- 230000003287 optical effect Effects 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 229910017052 cobalt Inorganic materials 0.000 description 2
- 230000006870 function Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 229910052697 platinum Inorganic materials 0.000 description 2
- 230000004044 response Effects 0.000 description 2
- 230000000717 retained effect Effects 0.000 description 2
- 229910001152 Bi alloy Inorganic materials 0.000 description 1
- 229910000914 Mn alloy Inorganic materials 0.000 description 1
- 229910016629 MnBi Inorganic materials 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- JCXGWMGPZLAOME-UHFFFAOYSA-N bismuth atom Chemical compound [Bi] JCXGWMGPZLAOME-UHFFFAOYSA-N 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 230000001678 irradiating effect Effects 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 239000011343 solid material Substances 0.000 description 1
- 239000002344 surface layer Substances 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
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03C—PHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES; PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR, STEREO-PHOTOGRAPHIC PROCESSES; AUXILIARY PROCESSES IN PHOTOGRAPHY
- G03C1/00—Photosensitive materials
- G03C1/705—Compositions containing chalcogenides, metals or alloys thereof, as photosensitive substances, e.g. photodope systems
-
- 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
- G11B7/2433—Metals or elements of Groups 13, 14, 15 or 16 of the Periodic Table, e.g. B, Si, Ge, As, Sb, Bi, Se or 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
- G11B7/242—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
- G11B2007/24306—Metals or metalloids transition metal elements of groups 3-10
-
- 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
- G11B2007/24314—Metals or metalloids group 15 elements (e.g. Sb, Bi)
-
- 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
- G11B2007/2571—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 group 14 elements except carbon (Si, Ge, Sn, Pb)
-
- 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
- G11B7/2531—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
- G11B7/2532—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 metals
-
- 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
- G11B7/258—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 reflective layers
- G11B7/2585—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 reflective layers based on aluminium
-
- 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
- Y10S430/165—Thermal imaging composition
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Inorganic Chemistry (AREA)
- Metallurgy (AREA)
- Materials Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optical Record Carriers And Manufacture Thereof (AREA)
- Optical Recording Or Reproduction (AREA)
- Thermal Transfer Or Thermal Recording In General (AREA)
- Non-Silver Salt Photosensitive Materials And Non-Silver Salt Photography (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US05/881,023 US4189735A (en) | 1978-02-24 | 1978-02-24 | Record playback apparatus and information record therefor |
US88102378 | 1978-02-24 |
Publications (3)
Publication Number | Publication Date |
---|---|
NL7901448A NL7901448A (nl) | 1979-08-28 |
NL193334B NL193334B (nl) | 1999-02-01 |
NL193334C true NL193334C (nl) | 1999-06-02 |
Family
ID=25377621
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
NL7901448A NL193334C (nl) | 1978-02-24 | 1979-02-23 | Informatie-opslagmedium. |
Country Status (9)
Country | Link |
---|---|
US (1) | US4189735A (en, 2012) |
JP (2) | JPS54126005A (en, 2012) |
AU (1) | AU531122B2 (en, 2012) |
DE (1) | DE2907193A1 (en, 2012) |
FR (1) | FR2418514B1 (en, 2012) |
GB (1) | GB2015770B (en, 2012) |
HK (1) | HK77686A (en, 2012) |
IT (1) | IT1111718B (en, 2012) |
NL (1) | NL193334C (en, 2012) |
Families Citing this family (20)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4195312A (en) * | 1978-02-24 | 1980-03-25 | Rca Corporation | Recorder and antireflective record blank having an optically passive transparent layer |
JPS5538655A (en) * | 1978-09-08 | 1980-03-18 | Sumitomo Chem Co Ltd | Optical signal recording and reproducing member |
DE2935859A1 (de) * | 1978-09-08 | 1980-03-20 | Matsushita Electric Ind Co Ltd | Optisches aufzeichnungsteil |
NL7903915A (nl) * | 1979-05-18 | 1980-11-20 | Philips Nv | Informatieregistratieelement. |
JPS5674844A (en) * | 1979-11-21 | 1981-06-20 | Fuji Photo Film Co Ltd | Magnetic recording medium |
DE3118058A1 (de) * | 1980-05-14 | 1982-03-11 | RCA Corp., 10020 New York, N.Y. | Aufzeichnungstraeger und verfahren zum schreiben einer informationsspur sowie zum loeschen einer in dem traeger gespeicherten information |
JPS57169996A (en) * | 1981-04-09 | 1982-10-19 | Sharp Corp | Magnetooptic storage element |
US4470053A (en) * | 1981-02-13 | 1984-09-04 | Minnesota Mining And Manufacturing Company | Protuberant optical recording medium |
US4460636A (en) * | 1981-03-27 | 1984-07-17 | Sony Corporation | Optical information record member |
NL8301072A (nl) * | 1983-03-28 | 1984-10-16 | Philips Nv | Optische registratieschijf. |
NL8301956A (nl) * | 1983-06-02 | 1985-01-02 | Optical Storage Int | Optisch registratie element. |
JPH07118096B2 (ja) * | 1987-01-29 | 1995-12-18 | 松下電器産業株式会社 | 光学情報記録担体 |
JPH01159839A (ja) * | 1987-12-16 | 1989-06-22 | Fuji Electric Co Ltd | 光記録媒体 |
JPH03228240A (ja) * | 1990-09-21 | 1991-10-09 | Sharp Corp | 磁気光学記憶素子 |
EP0498657A3 (en) * | 1991-02-08 | 1993-03-03 | Canon Kabushiki Kaisha | Optical recording medium, method of reproducing recorded data of optical recording medium, and system for reproducing recorded data of optical recording medium |
JPH05128588A (ja) * | 1991-05-16 | 1993-05-25 | Canon Inc | 光記録媒体、光記録方法及び再生方法、情報書込み装置及び情報レコードの再生装置 |
US5428599A (en) * | 1992-06-18 | 1995-06-27 | Canon Kabushiki Kaisha | Optical recording medium, information recording method and information reproducing method |
US5397684A (en) * | 1993-04-27 | 1995-03-14 | International Business Machines Corporation | Antireflective polyimide dielectric for photolithography |
CN100428348C (zh) | 2001-09-26 | 2008-10-22 | Tdk股份有限公司 | 光记录媒体及其记录系统 |
EP1437720A1 (en) * | 2001-09-26 | 2004-07-14 | TDK Corporation | Optical recording medium |
Family Cites Families (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3651281A (en) * | 1969-06-06 | 1972-03-21 | Carl H Becker | Laser recording system using photomagnetically magnetizable storage medium |
US3665483A (en) * | 1969-06-06 | 1972-05-23 | Chase Manhattan Capital Corp | Laser recording medium |
US3812477A (en) * | 1973-04-09 | 1974-05-21 | Ibm | Method for superresolution in an optical memory |
JPS5932319B2 (ja) * | 1974-03-22 | 1984-08-08 | 富士写真フイルム株式会社 | 記録材料 |
US4000492A (en) * | 1974-04-04 | 1976-12-28 | Bell Telephone Laboratories, Incorporated | Metal film recording media for laser writing |
JPS50151035A (en, 2012) * | 1974-05-23 | 1975-12-04 | ||
JPS5114263A (en) * | 1974-07-26 | 1976-02-04 | Hitachi Ltd | Setsugono roeiboshiho |
JPS5177325A (en, 2012) * | 1974-12-27 | 1976-07-05 | Matsushita Electric Ind Co Ltd | |
US4097895A (en) * | 1976-03-19 | 1978-06-27 | Rca Corporation | Multilayer optical record |
US4023185A (en) * | 1976-03-19 | 1977-05-10 | Rca Corporation | Ablative optical recording medium |
AU511031B2 (en) * | 1976-03-19 | 1980-07-24 | Rca Corp. | Ablative optical recording medium |
JPS53122403A (en) * | 1977-03-28 | 1978-10-25 | Rca Corp | Information recorder |
US4101907A (en) * | 1977-08-29 | 1978-07-18 | Rca Corporation | Overcoat structure for optical video disc |
GB2005155A (en) * | 1977-09-28 | 1979-04-19 | Rca Corp | Improved optical recording medium |
NL7809159A (nl) * | 1977-09-29 | 1979-04-02 | Philips Nv | Informatieregistratie element met kleurstof bevattende hulplaag. |
JPS6418503A (en) * | 1987-07-13 | 1989-01-23 | Kawasaki Steel Co | Method for cold rolling silicon steel sheet having good surface quality |
-
1978
- 1978-02-24 US US05/881,023 patent/US4189735A/en not_active Expired - Lifetime
-
1979
- 1979-02-19 IT IT20329/79A patent/IT1111718B/it active
- 1979-02-21 AU AU44433/79A patent/AU531122B2/en not_active Expired
- 1979-02-21 GB GB7906100A patent/GB2015770B/en not_active Expired
- 1979-02-23 FR FR7904704A patent/FR2418514B1/fr not_active Expired
- 1979-02-23 JP JP2128979A patent/JPS54126005A/ja active Granted
- 1979-02-23 NL NL7901448A patent/NL193334C/nl not_active IP Right Cessation
- 1979-02-23 DE DE19792907193 patent/DE2907193A1/de active Granted
-
1986
- 1986-10-16 HK HK776/86A patent/HK77686A/xx not_active IP Right Cessation
-
1990
- 1990-05-28 JP JP2139553A patent/JPH03116455A/ja active Granted
Also Published As
Publication number | Publication date |
---|---|
US4189735A (en) | 1980-02-19 |
AU531122B2 (en) | 1983-08-11 |
GB2015770A (en) | 1979-09-12 |
JPH03116455A (ja) | 1991-05-17 |
IT7920329A0 (it) | 1979-02-19 |
JPH0118503B2 (en, 2012) | 1989-04-06 |
DE2907193C2 (en, 2012) | 1989-06-22 |
NL7901448A (nl) | 1979-08-28 |
JPH0470704B2 (en, 2012) | 1992-11-11 |
AU4443379A (en) | 1979-08-30 |
FR2418514A1 (fr) | 1979-09-21 |
DE2907193A1 (de) | 1979-09-06 |
FR2418514B1 (fr) | 1987-03-27 |
IT1111718B (it) | 1986-01-13 |
NL193334B (nl) | 1999-02-01 |
JPS54126005A (en) | 1979-09-29 |
HK77686A (en) | 1986-10-24 |
GB2015770B (en) | 1982-08-25 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
NL193334C (nl) | Informatie-opslagmedium. | |
US4425570A (en) | Reversible recording medium and information record | |
KR830002737B1 (ko) | 유전체를 사용한 정보기록 매체 | |
NL9000906A (nl) | Registratie-inrichting, weergeefinrichting, en informatieregistratiedrager. | |
US5353277A (en) | Optical disk having intertrack heat conduction suppression | |
EP0092113B1 (en) | Optical recording medium for use in an optical storage system and method for making such recording medium | |
US4387381A (en) | Optical recording medium and information record with tracking aid | |
Tominaga et al. | Superresolution structure for optical data storage by near-field optics | |
DE69119626T2 (de) | Magnetooptische Platte und Verfahren zur Wiedergabe dieser | |
NL8902615A (nl) | Optisch registratiestelsel. | |
JPH11134733A (ja) | 光磁気記録再生方法及び装置 | |
JP3287860B2 (ja) | 光学的情報記録方法と記録媒体 | |
JPWO2003052756A1 (ja) | 光情報再生方法、光ヘッド装置、および光情報処理装置 | |
JP2601142B2 (ja) | 光ディスク装置 | |
JPH0419610B2 (en, 2012) | ||
JP2629812B2 (ja) | 光再生ピックアップ | |
JPS62226445A (ja) | 光記録媒体 | |
JP2917808B2 (ja) | 光記録媒体 | |
JPH06236578A (ja) | 光ディスク | |
JPH0822614B2 (ja) | 光記録媒体 | |
JPH03160634A (ja) | 光記録媒体 | |
JPS61273756A (ja) | 光デイスク | |
JP2848130B2 (ja) | 光学的情報記録媒体 | |
JP2537989B2 (ja) | 光ディスク | |
JP2002133720A (ja) | 光記録媒体 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
A85 | Still pending on 85-01-01 | ||
BA | A request for search or an international-type search has been filed | ||
BB | A search report has been drawn up | ||
BC | A request for examination has been filed | ||
V4 | Discontinued because of reaching the maximum lifetime of a patent |
Free format text: 19990602 |