BE901719A - Disque a memoire lisible par voie optique. - Google Patents
Disque a memoire lisible par voie optique.Info
- Publication number
- BE901719A BE901719A BE0/214507A BE214507A BE901719A BE 901719 A BE901719 A BE 901719A BE 0/214507 A BE0/214507 A BE 0/214507A BE 214507 A BE214507 A BE 214507A BE 901719 A BE901719 A BE 901719A
- Authority
- BE
- Belgium
- Prior art keywords
- memory disc
- readable memory
- optically readable
- recording layer
- outer edges
- Prior art date
Links
- 239000000758 substrate Substances 0.000 abstract 3
- 230000001681 protective effect Effects 0.000 abstract 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
- G11B7/24097—Structures for detection, control, recording operation or replay operation; Special shapes or structures for centering or eccentricity prevention; Arrangements for testing, inspecting or evaluating; Containers, cartridges or cassettes
-
- 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
- G11B7/24015—Air-sandwiched discs
Landscapes
- Optical Record Carriers And Manufacture Thereof (AREA)
- Packaging For Recording Disks (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NL8400476A NL8400476A (nl) | 1984-02-14 | 1984-02-14 | Optisch uitleesbare geheugenschijf. |
Publications (1)
Publication Number | Publication Date |
---|---|
BE901719A true BE901719A (fr) | 1985-08-12 |
Family
ID=19843488
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
BE0/214507A BE901719A (fr) | 1984-02-14 | 1985-02-12 | Disque a memoire lisible par voie optique. |
Country Status (11)
Country | Link |
---|---|
JP (1) | JPS60140235U (it) |
BE (1) | BE901719A (it) |
CA (1) | CA1241744A (it) |
DD (1) | DD228381A5 (it) |
DE (1) | DE3505015A1 (it) |
ES (1) | ES8606710A1 (it) |
FR (1) | FR2559607A1 (it) |
GB (1) | GB2155684B (it) |
IT (1) | IT1183232B (it) |
NL (1) | NL8400476A (it) |
SU (1) | SU1487826A3 (it) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2343784B (en) * | 1998-11-16 | 2001-08-01 | Leung Ching Yuen | Irregular optical disc |
US20020136155A1 (en) * | 2001-03-06 | 2002-09-26 | Chieh-Ho Chen | CD safe to hold |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE203656C (it) * | ||||
DE190908C (it) * | ||||
GB335768A (en) * | 1929-10-24 | 1930-10-02 | Jacoviac Maurice | Improvements in protecting devices for gramophone disc records |
DE883811C (de) * | 1951-06-08 | 1953-07-20 | Hermann Geiselhart | Ring aus Gummi als Plattenschutz |
US4331966A (en) * | 1980-10-06 | 1982-05-25 | Storage Technology Corporation | Information storage device and method of forming same |
JPS5774842A (en) * | 1980-10-24 | 1982-05-11 | Mitsubishi Electric Corp | Optical information recording disk |
US4376963A (en) * | 1980-12-19 | 1983-03-15 | International Business Machines Corporation | Composite magnetic recording disk |
JPS57150155A (en) * | 1981-03-09 | 1982-09-16 | Matsushita Electric Ind Co Ltd | Magnetooptic disc |
JPS57172541A (en) * | 1981-04-15 | 1982-10-23 | Toshiba Corp | Information storage medium |
JPS57172542A (en) * | 1981-04-15 | 1982-10-23 | Toshiba Corp | Information storage medium |
FR2528216B1 (fr) * | 1982-06-08 | 1988-01-08 | Thomson Csf | Disque optique protege a porte-couche libre |
JPS5987636A (ja) * | 1982-11-10 | 1984-05-21 | Toshiba Corp | 情報記憶媒体 |
-
1984
- 1984-02-14 NL NL8400476A patent/NL8400476A/nl not_active Application Discontinuation
-
1985
- 1985-02-07 CA CA000473768A patent/CA1241744A/en not_active Expired
- 1985-02-11 ES ES540285A patent/ES8606710A1/es not_active Expired
- 1985-02-11 IT IT19458/85A patent/IT1183232B/it active
- 1985-02-12 DD DD85273212A patent/DD228381A5/de unknown
- 1985-02-12 FR FR8501934A patent/FR2559607A1/fr active Pending
- 1985-02-12 BE BE0/214507A patent/BE901719A/fr not_active IP Right Cessation
- 1985-02-13 GB GB08503678A patent/GB2155684B/en not_active Expired
- 1985-02-13 JP JP1985017893U patent/JPS60140235U/ja active Pending
- 1985-02-13 SU SU853862706A patent/SU1487826A3/ru active
- 1985-02-14 DE DE19853505015 patent/DE3505015A1/de not_active Withdrawn
Also Published As
Publication number | Publication date |
---|---|
FR2559607A1 (fr) | 1985-08-16 |
CA1241744A (en) | 1988-09-06 |
GB2155684A (en) | 1985-09-25 |
DD228381A5 (de) | 1985-10-09 |
IT1183232B (it) | 1987-10-15 |
ES8606710A1 (es) | 1986-04-01 |
JPS60140235U (ja) | 1985-09-17 |
ES540285A0 (es) | 1986-04-01 |
GB2155684B (en) | 1988-11-02 |
IT8519458A0 (it) | 1985-02-11 |
NL8400476A (nl) | 1985-09-02 |
SU1487826A3 (ru) | 1989-06-15 |
DE3505015A1 (de) | 1985-08-14 |
GB8503678D0 (en) | 1985-03-13 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
ES473697A1 (es) | Un elemento de registro de informacion | |
DE3576671D1 (de) | Transparentfolie fuer tintenstrahlaufzeichnung. | |
DK120587A (da) | Solafskaermende, gennemsigtig plade med filmbelaegn ing | |
IT1183527B (it) | Procedimento per riportare uno strato sottile, trasparente, sulla superficie di elementi ottici | |
DE3765968D1 (de) | Aluminiumlegierungstraeger fuer hochdruckformen. | |
DE3777783D1 (de) | Keramischer kombinierter deckel fuer halbleiterpackung. | |
DE3768795D1 (de) | Optische informationsaufzeichnungsplatte und geraet dafuer. | |
DE3577247D1 (de) | Magneto-optischer aufzeichnungstraeger. | |
CA2001527A1 (en) | Optical Recording Medium | |
FR2403617A1 (fr) | Procede pour la realisation d'un disque d'information lisible par voie optique a l'aide d'une plaque de raidissement plane, conductrice de la chaleur et realisee en materiau inorganique | |
BE901720A (fr) | Disque a memoire lisible par voie optique. | |
DE68916511D1 (de) | Optisches Aufzeichnungsmedium. | |
DE3782096D1 (de) | Plattentraeger und verpackungssystem fuer optische platten. | |
AU550750B2 (en) | Optically readable record carrier | |
IT8221490A0 (it) | Apparecchiature per incidere e/oppure leggere una portante di registrazione. | |
ES491239A0 (es) | Perfeccionamientos en los reactores de flujo por enzimas in-mobilizadas sobre matrices solidas de superficie plana | |
JPS57173256A (en) | Image sensor | |
BE901719A (fr) | Disque a memoire lisible par voie optique. | |
FR2606107B1 (fr) | Plaquette pour frein a disque et frein a disque equipe de telles plaquettes | |
DE3576476D1 (de) | Waermeempfindliches uebertragungsmedium fuer aufzeichnungen. | |
DE3578739D1 (de) | Optischer aufzeichnungstraeger. | |
EP0187133A3 (en) | Thermal recording medium and method | |
DE3773531D1 (de) | Magneto-optischer aufzeichnungstraeger. | |
EP0246432A3 (en) | Fluid impingement heatsink with crossflow capability | |
FR2385535A1 (fr) | Perfectionnement a un support d'information |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
RE | Patent lapsed |
Owner name: N.V. PHILIPS'GLOEILAMPENFABRIEKEN Effective date: 19890228 |