FR2355337B1 - - Google Patents
Info
- Publication number
- FR2355337B1 FR2355337B1 FR7618602A FR7618602A FR2355337B1 FR 2355337 B1 FR2355337 B1 FR 2355337B1 FR 7618602 A FR7618602 A FR 7618602A FR 7618602 A FR7618602 A FR 7618602A FR 2355337 B1 FR2355337 B1 FR 2355337B1
- Authority
- FR
- France
- 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
Links
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
- G11B7/24015—Air-sandwiched discs
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Optical Record Carriers And Manufacture Thereof (AREA)
- Manufacturing Optical Record Carriers (AREA)
- Optical Recording Or Reproduction (AREA)
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7618602A FR2355337A1 (fr) | 1976-06-18 | 1976-06-18 | Procede de fabrication d'un support d'information inscriptible et lisible optiquement, et support ainsi obtenu |
NL7706584A NL7706584A (nl) | 1976-06-18 | 1977-06-15 | Werkwijze voor het vervaardigen van een inschrijf- bare en optisch leesbare informatiedrager en aldus verkregen informatiedoager. |
DE19772727189 DE2727189A1 (de) | 1976-06-18 | 1977-06-16 | Optisch beschreibbarer und lesbarer informationsaufzeichnungstraeger und verfahren zu seiner herstellung |
JP7118877A JPS52156605A (en) | 1976-06-18 | 1977-06-17 | Data carrier and method of producing same |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7618602A FR2355337A1 (fr) | 1976-06-18 | 1976-06-18 | Procede de fabrication d'un support d'information inscriptible et lisible optiquement, et support ainsi obtenu |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2355337A1 FR2355337A1 (fr) | 1978-01-13 |
FR2355337B1 true FR2355337B1 ( ) | 1979-03-23 |
Family
ID=9174600
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7618602A Granted FR2355337A1 (fr) | 1976-06-18 | 1976-06-18 | Procede de fabrication d'un support d'information inscriptible et lisible optiquement, et support ainsi obtenu |
Country Status (4)
Country | Link |
---|---|
JP (1) | JPS52156605A ( ) |
DE (1) | DE2727189A1 ( ) |
FR (1) | FR2355337A1 ( ) |
NL (1) | NL7706584A ( ) |
Families Citing this family (26)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4183094A (en) * | 1978-03-20 | 1980-01-08 | Xerox Corporation | Optical storage medium using the frequency domain |
JPS6037700Y2 (ja) * | 1978-06-07 | 1985-11-11 | 三洋電機株式会社 | デイスクレコ−ドの構造 |
JPS5545166A (en) * | 1978-09-25 | 1980-03-29 | Matsushita Electric Ind Co Ltd | Recording and reproducing method for optical information |
FR2437668A1 (fr) * | 1978-09-29 | 1980-04-25 | Thomson Csf | Disque optique protege |
CH636212A5 (en) * | 1978-10-17 | 1983-05-13 | Mca Disco Vision | Medium carrying recorded information |
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 |
JPS5762831A (en) * | 1980-10-02 | 1982-04-16 | Nissan Motor Co Ltd | Forging die for part having reverse gradient |
JPS5766538A (en) * | 1980-10-08 | 1982-04-22 | Toshiba Corp | Information storage medium |
JPS5766539A (en) * | 1980-10-09 | 1982-04-22 | Toshiba Corp | Optical disk |
DE3176118D1 (en) * | 1980-10-09 | 1987-05-21 | Toshiba Kk | Data recording medium |
JPS5771247U ( ) * | 1980-10-17 | 1982-04-30 | ||
JPS5786173A (en) * | 1980-11-17 | 1982-05-29 | Toshiba Corp | Recorder and reproducer |
JPS5788538A (en) * | 1980-11-19 | 1982-06-02 | Toshiba Corp | Optical disc |
JPS5788537A (en) * | 1980-11-19 | 1982-06-02 | Toshiba Corp | Optical disc |
JPS5817631U (ja) * | 1981-07-23 | 1983-02-03 | 富士写真フイルム株式会社 | 光情報記録媒体 |
JPH0680541B2 (ja) * | 1982-02-22 | 1994-10-12 | 株式会社日立製作所 | 情報記録媒体 |
DE3416607C2 (de) * | 1983-05-04 | 1995-03-16 | Matsushita Electric Ind Co Ltd | Optische Speicherplatte und Verfahren zu deren Herstellung |
US4527173A (en) * | 1984-04-16 | 1985-07-02 | Eastman Kodak Company | Erasable, reusable optical recording element and method |
US4538159A (en) * | 1984-04-16 | 1985-08-27 | Eastman Kodak Company | Ceramic overcoated optical recording element |
JPS61111040U ( ) * | 1985-10-25 | 1986-07-14 | ||
JPS62141661A (ja) * | 1985-12-16 | 1987-06-25 | Ricoh Co Ltd | 光情報記録媒体 |
DE3701801A1 (de) * | 1986-01-22 | 1987-07-23 | Ricoh Kk | Optisches informationsaufzeichnungsmaterial |
JPH0433553Y2 ( ) * | 1986-05-30 | 1992-08-11 | ||
JPS6323236A (ja) * | 1987-05-21 | 1988-01-30 | Sanyo Electric Co Ltd | ディスクレコ−ドの構造 |
JPS63841A (ja) * | 1987-06-26 | 1988-01-05 | Sharp Corp | 磁気光学記憶素子 |
JPH0652589B2 (ja) * | 1990-11-27 | 1994-07-06 | 株式会社東芝 | 光学的情報記憶担体の製造方法 |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3626386A (en) * | 1970-03-05 | 1971-12-07 | Energy Conversion Devices Inc | Information storage systems |
-
1976
- 1976-06-18 FR FR7618602A patent/FR2355337A1/fr active Granted
-
1977
- 1977-06-15 NL NL7706584A patent/NL7706584A/xx not_active Application Discontinuation
- 1977-06-16 DE DE19772727189 patent/DE2727189A1/de active Pending
- 1977-06-17 JP JP7118877A patent/JPS52156605A/ja active Pending
Also Published As
Publication number | Publication date |
---|---|
DE2727189A1 (de) | 1977-12-29 |
NL7706584A (nl) | 1977-12-20 |
JPS52156605A (en) | 1977-12-27 |
FR2355337A1 (fr) | 1978-01-13 |
Similar Documents
Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |