AT368653B - Informationsaufzeichnungsplatte und verfahren zur herstellung desselben - Google Patents
Informationsaufzeichnungsplatte und verfahren zur herstellung desselbenInfo
- Publication number
- AT368653B AT368653B AT0382279A AT382279A AT368653B AT 368653 B AT368653 B AT 368653B AT 0382279 A AT0382279 A AT 0382279A AT 382279 A AT382279 A AT 382279A AT 368653 B AT368653 B AT 368653B
- Authority
- AT
- Austria
- Prior art keywords
- producing
- same
- information recording
- recording plate
- plate
- Prior art date
Links
- 238000004519 manufacturing process Methods 0.000 title 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
- G11B7/26—Apparatus or processes specially adapted for the manufacture of record carriers
- G11B7/263—Preparing and using a stamper, e.g. pressing or injection molding substrates
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B23/00—Record carriers not specific to the method of recording or reproducing; Accessories, e.g. containers, specially adapted for co-operation with the recording or reproducing apparatus ; Intermediate mediums; Apparatus or processes specially adapted for their manufacture
- G11B23/30—Record carriers not specific to the method of recording or reproducing; Accessories, e.g. containers, specially adapted for co-operation with the recording or reproducing apparatus ; Intermediate mediums; Apparatus or processes specially adapted for their manufacture with provision for auxiliary signals
- G11B23/36—Signals on record carriers or on containers and recorded by the same method as the main recording
-
- 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
- G11B7/004—Recording, reproducing or erasing methods; Read, write or erase circuits therefor
- G11B7/0045—Recording
- G11B7/00451—Recording involving ablation of the recording layer
-
- 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
- G11B7/007—Arrangement of the information on the record carrier, e.g. form of tracks, actual track shape, e.g. wobbled, or cross-section, e.g. v-shaped; Sequential information structures, e.g. sectoring or header formats within a track
-
- 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
-
- 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
- G11B7/2572—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 organic materials
- G11B7/2575—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 organic materials resins
-
- 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
- G11B2007/2431—Metals or metalloids group 13 elements (B, Al, Ga, In)
-
- 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
- G11B2007/24314—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
- G11B7/242—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
- G11B7/08—Disposition or mounting of heads or light sources relatively to record carriers
- G11B7/09—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam or focus plane for the purpose of maintaining alignment of the light beam relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following
- G11B7/0938—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam or focus plane for the purpose of maintaining alignment of the light beam relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following servo format, e.g. guide tracks, pilot signals
-
- 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
-
- 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
-
- 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
- Y10S430/146—Laser beam
-
- 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
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
- Y10T428/24802—Discontinuous or differential coating, impregnation or bond [e.g., artwork, printing, retouched photograph, etc.]
-
- 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
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
- Y10T428/24802—Discontinuous or differential coating, impregnation or bond [e.g., artwork, printing, retouched photograph, etc.]
- Y10T428/24917—Discontinuous or differential coating, impregnation or bond [e.g., artwork, printing, retouched photograph, etc.] including metal layer
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NL7805605 | 1978-05-24 |
Publications (2)
Publication Number | Publication Date |
---|---|
ATA382279A ATA382279A (de) | 1982-02-15 |
AT368653B true AT368653B (de) | 1982-10-25 |
Family
ID=19830898
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
AT0382279A AT368653B (de) | 1978-05-24 | 1979-05-25 | Informationsaufzeichnungsplatte und verfahren zur herstellung desselben |
Country Status (13)
Country | Link |
---|---|
US (1) | US4675227A (de) |
JP (1) | JPS554793A (de) |
AT (1) | AT368653B (de) |
AU (1) | AU530735B2 (de) |
BE (1) | BE876461A (de) |
CA (1) | CA1149061A (de) |
CH (1) | CH647883A5 (de) |
DE (2) | DE2920480A1 (de) |
FR (1) | FR2426956B1 (de) |
GB (1) | GB2021798B (de) |
IT (1) | IT1192774B (de) |
NL (1) | NL192148C (de) |
SE (1) | SE444873B (de) |
Families Citing this family (24)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AU544137B2 (en) * | 1980-02-01 | 1985-05-16 | Minnesota Mining And Manufacturing Company | Information carrying discs |
JPS6023997B2 (ja) * | 1980-08-20 | 1985-06-10 | 株式会社日立製作所 | 記録用部材 |
US4363844A (en) * | 1980-09-22 | 1982-12-14 | Lewis Terry W | Metallized information carrying discs |
FR2490858B1 (fr) * | 1980-09-25 | 1986-04-04 | Rca Corp | Milieu d'enregistrement optique a sensibilite variable et disque contenant de l'information, realise a l'aide d'un tel milieu |
JPS57102930A (en) * | 1980-12-19 | 1982-06-26 | Nippon Telegr & Teleph Corp <Ntt> | Surface finish of acryl resin substrate |
NL8101515A (nl) * | 1981-03-27 | 1982-10-18 | Philips Nv | Optisch uitleesbare informatieschijf en werkwijze voor de vervaardiging ervan. |
US4385372A (en) * | 1981-05-01 | 1983-05-24 | Drexler Technology Corporation | Reflective optical data storage and laser recording media having grooved dielectric encoded prerecorded information |
JPS5845633A (ja) * | 1981-09-07 | 1983-03-16 | Matsushita Electric Ind Co Ltd | 情報記録担体 |
JPS591136U (ja) * | 1982-06-25 | 1984-01-06 | 松下電器産業株式会社 | 光情報担体 |
NL8300960A (nl) * | 1983-03-17 | 1984-10-16 | Philips Nv | Optische registatieschijf. |
NL8301072A (nl) * | 1983-03-28 | 1984-10-16 | Philips Nv | Optische registratieschijf. |
JPS59217243A (ja) * | 1983-05-24 | 1984-12-07 | Fuji Photo Film Co Ltd | 情報記録媒体 |
JPS60209938A (ja) * | 1984-04-03 | 1985-10-22 | Sumitomo Bakelite Co Ltd | 光学記録媒体の製造方法 |
JPS60219098A (ja) * | 1984-04-16 | 1985-11-01 | Fuji Photo Film Co Ltd | レ−ザ−記録材料 |
US4619804A (en) * | 1985-04-15 | 1986-10-28 | Eastman Kodak Company | Fabricating optical record media |
JPS62192041A (ja) * | 1986-02-19 | 1987-08-22 | Hitachi Ltd | 光記録円板 |
WO1988003310A1 (en) * | 1986-10-29 | 1988-05-05 | Dai Nippon Insatsu Kabushiki Kaisha | Draw type optical recording medium |
JPS62295238A (ja) * | 1987-05-20 | 1987-12-22 | Sharp Corp | 磁気光学記憶素子 |
EP0449261A3 (en) * | 1990-03-29 | 1992-02-26 | Kabushiki Kaisha Toshiba | Resin composition for an optical disc and an optical disc using it |
DE4122231C2 (de) * | 1991-07-04 | 1994-06-30 | Wacker Chemie Gmbh | Verwendung von Vinylchlorid-Vinylester-Mischpolymerisation zur Herstellung von optisch auslesbaren Informationsspeichern |
EP0585710A3 (de) * | 1992-08-19 | 1994-10-05 | Diafoil Hoechst Co Ltd | Mehrschichtiger Polyestersubstratfilm für optische Bänder. |
US6187508B1 (en) | 1998-08-14 | 2001-02-13 | Agfa-Gevaert, N.V. | Heat mode recording element based on a thin metal layer |
DE69816075D1 (de) * | 1998-08-14 | 2003-08-07 | Agfa Gevaert Nv | Wärmeempfindliches Aufzeichnungselement auf Basis von einer dünnen Metallschicht |
US6692895B2 (en) * | 2001-05-25 | 2004-02-17 | 3M Innovative Properties Company | Imageable article and method of imaging |
Family Cites Families (21)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3438050A (en) * | 1965-01-06 | 1969-04-08 | Itek Corp | Laser data recorder |
US4008341A (en) * | 1968-10-11 | 1977-02-15 | W. R. Grace & Co. | Curable liquid polymer compositions |
IL34152A (en) * | 1969-04-10 | 1974-01-14 | Teeg Research Inc | Radiation sensitive element having a conversion surface modifying the radiation sensitive characteristics of the element |
US3740761A (en) * | 1971-05-28 | 1973-06-19 | Teletype Corp | Laser recording medium |
US3697396A (en) * | 1971-06-25 | 1972-10-10 | Grace W R & Co | Photocurable liquid polyene-polythiol polymer composition |
US3697397A (en) * | 1971-06-25 | 1972-10-10 | Grace W R & Co | High energy curable liquid polyene-polythiol polymer composition |
US3697395A (en) * | 1971-06-25 | 1972-10-10 | Grace W R & Co | Photocurable liquid polyene-polythiol polymer composition |
FR2214934B1 (de) * | 1973-01-18 | 1978-03-24 | Thomson Csf | |
GB1442087A (en) * | 1973-02-27 | 1976-07-07 | Laser Graphic Systems Corp | Composite printing and relief plates |
JPS50103536A (de) * | 1974-01-21 | 1975-08-15 | ||
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 |
US3911444A (en) * | 1974-04-04 | 1975-10-07 | Bell Telephone Labor Inc | Metal film recording media for laser writing |
US4112030A (en) * | 1975-05-02 | 1978-09-05 | Siemens Aktiengesellschaft | Method and system for the production of sheet or platter shaped information carriers |
JPS5264905A (en) * | 1975-11-26 | 1977-05-28 | Hitachi Ltd | Part for recording information |
JPS5231703A (en) * | 1975-09-05 | 1977-03-10 | Kokusai Denshin Denwa Co Ltd <Kdd> | Magnetic thin film recording medium |
DE2615605C2 (de) * | 1976-04-09 | 1978-06-01 | Polygram Gmbh, 2000 Hamburg | Scheibenförmiger Informationsträger und Verfahren zu seiner Herstellung |
JPS52154605A (en) * | 1976-06-18 | 1977-12-22 | Hitachi Ltd | Information recording material |
FR2365854A1 (fr) | 1976-09-24 | 1978-04-21 | Thomson Brandt | Procede de fabrication d'un support d'information enregistrable et lisible optiquement et support obtenu par un tel procede |
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 |
-
1978
- 1978-05-21 DE DE19782920480 patent/DE2920480A1/de active Granted
- 1978-11-08 NL NL7811086A patent/NL192148C/nl not_active IP Right Cessation
-
1979
- 1979-05-17 CA CA000327936A patent/CA1149061A/en not_active Expired
- 1979-05-21 SE SE7904405A patent/SE444873B/sv not_active IP Right Cessation
- 1979-05-21 DE DE2954634A patent/DE2954634C2/de not_active Expired - Lifetime
- 1979-05-21 IT IT7968077A patent/IT1192774B/it active
- 1979-05-21 CH CH4748/79A patent/CH647883A5/de not_active IP Right Cessation
- 1979-05-22 BE BE0/195325A patent/BE876461A/xx not_active IP Right Cessation
- 1979-05-22 GB GB7917679A patent/GB2021798B/en not_active Expired
- 1979-05-23 FR FR7913136A patent/FR2426956B1/fr not_active Expired
- 1979-05-23 AU AU47353/79A patent/AU530735B2/en not_active Ceased
- 1979-05-24 JP JP6455379A patent/JPS554793A/ja active Granted
- 1979-05-25 AT AT0382279A patent/AT368653B/de not_active IP Right Cessation
-
1983
- 1983-02-07 US US06/464,545 patent/US4675227A/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
DE2920480A1 (de) | 1979-11-29 |
NL192148C (nl) | 1997-02-04 |
SE7904405L (sv) | 1979-11-25 |
AU4735379A (en) | 1980-11-27 |
FR2426956A1 (fr) | 1979-12-21 |
GB2021798A (en) | 1979-12-05 |
SE444873B (sv) | 1986-05-12 |
JPS6129053B2 (de) | 1986-07-04 |
GB2021798B (en) | 1983-03-16 |
CH647883A5 (de) | 1985-02-15 |
IT1192774B (it) | 1988-05-04 |
NL192148B (nl) | 1996-10-01 |
AU530735B2 (en) | 1983-07-28 |
ATA382279A (de) | 1982-02-15 |
US4675227A (en) | 1987-06-23 |
NL7811086A (en) | 1979-11-27 |
FR2426956B1 (fr) | 1988-06-24 |
JPS554793A (en) | 1980-01-14 |
CA1149061A (en) | 1983-06-28 |
DE2954634C2 (de) | 1990-06-13 |
BE876461A (fr) | 1979-11-22 |
IT7968077A0 (it) | 1979-05-21 |
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