NL191863C - Drielagig optisch registreermedium, en informatiedrager met daarin ge- registreerde informatie. - Google Patents

Drielagig optisch registreermedium, en informatiedrager met daarin ge- registreerde informatie.

Info

Publication number
NL191863C
NL191863C NL8102983A NL8102983A NL191863C NL 191863 C NL191863 C NL 191863C NL 8102983 A NL8102983 A NL 8102983A NL 8102983 A NL8102983 A NL 8102983A NL 191863 C NL191863 C NL 191863C
Authority
NL
Netherlands
Prior art keywords
recording medium
optical recording
carrier containing
layer optical
information recorded
Prior art date
Application number
NL8102983A
Other languages
English (en)
Dutch (nl)
Other versions
NL8102983A (nl
NL191863B (nl
Original Assignee
Rca Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Rca Corp filed Critical Rca Corp
Publication of NL8102983A publication Critical patent/NL8102983A/nl
Publication of NL191863B publication Critical patent/NL191863B/xx
Application granted granted Critical
Publication of NL191863C publication Critical patent/NL191863C/xx

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
    • G11B7/2403—Layers; Shape, structure or physical properties thereof
    • G11B7/24053—Protective topcoat layers lying opposite to the light entrance side, e.g. layers for preventing electrostatic charging
    • 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
    • G11B7/2407—Tracks or pits; Shape, structure or physical properties thereof
    • G11B7/24085—Pits
NL8102983A 1980-10-21 1981-06-19 Drielagig optisch registreermedium, en informatiedrager met daarin ge- registreerde informatie. NL191863C (nl)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US19931480 1980-10-21
US06/199,314 US4383311A (en) 1980-10-21 1980-10-21 Optical recording medium and information record with indented overcoat

Publications (3)

Publication Number Publication Date
NL8102983A NL8102983A (nl) 1982-05-17
NL191863B NL191863B (nl) 1996-05-01
NL191863C true NL191863C (nl) 1996-09-03

Family

ID=22737046

Family Applications (1)

Application Number Title Priority Date Filing Date
NL8102983A NL191863C (nl) 1980-10-21 1981-06-19 Drielagig optisch registreermedium, en informatiedrager met daarin ge- registreerde informatie.

Country Status (6)

Country Link
US (1) US4383311A (xx)
JP (1) JPS5770695A (xx)
DE (1) DE3123539A1 (xx)
FR (1) FR2492568B1 (xx)
GB (1) GB2086638B (xx)
NL (1) NL191863C (xx)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3229573A1 (de) * 1981-08-17 1983-02-24 RCA Corp., 10020 New York, N.Y. Optisches aufzeichnungsmaterial, informationstraeger und verfahren zum herstellen eines optischen aufzeichnungsmaterials
JPS5888844A (ja) * 1981-11-20 1983-05-27 Matsushita Electric Ind Co Ltd 光記録媒体
JPS58118293A (ja) * 1982-01-08 1983-07-14 Dainippon Ink & Chem Inc 光記録媒体
NL8202229A (nl) * 1982-06-02 1984-01-02 Docdata Bv Medium voor het registreren van optisch uitleesbare informatie.
US4480302A (en) * 1982-09-29 1984-10-30 Storage Technology Corporation Optical recording media
JPS6057553A (ja) * 1983-06-01 1985-04-03 バロ−ス・コ−ポレ−シヨン 光学メモリデイスクとその製造方法
CA1198209A (en) * 1983-11-24 1985-12-17 Northern Telecom Limited Optical disc
JPS60205840A (ja) * 1984-03-30 1985-10-17 Tdk Corp 光記録媒体
US4568952A (en) * 1984-12-10 1986-02-04 Rca Corporation Optical record blank and information record
EP0527539B1 (en) * 1987-11-18 1998-03-11 Sharp Kabushiki Kaisha An optical memory medium
JPH04147445A (ja) * 1990-10-05 1992-05-20 Del Mar Avionics 第２表面光学的記憶装置を製造する方法

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4069487A (en) * 1974-12-26 1978-01-17 Canon Kabushiki Kaisha Recording member and process for recording
US4175145A (en) * 1975-04-28 1979-11-20 Teletype Corporation Making memory structure for laser recording system
JPS5211906A (en) * 1975-07-18 1977-01-29 Hitachi Ltd Material for recording
JPS5251943A (en) * 1975-10-21 1977-04-26 Energy Conversion Devices Inc Image forming method
US4097895A (en) * 1976-03-19 1978-06-27 Rca Corporation Multilayer optical record
DE2618773C2 (de) * 1976-04-29 1985-02-21 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Aufzeichnungsträger für Daten
US4074282A (en) * 1976-05-13 1978-02-14 North American Philips Corporation Radiation-sensitive record with protected sensitive surface
US4216501A (en) * 1977-03-28 1980-08-05 Rca Corporation Optical anti-reflective information record
JPS53141040A (en) * 1977-05-16 1978-12-08 Hitachi Ltd Information recording material
US4101907A (en) * 1977-08-29 1978-07-18 Rca Corporation Overcoat structure for optical video disc
NL7802860A (nl) * 1978-03-16 1979-09-18 Philips Nv Registratiedragerlichaam en registratiedrager voor optische informatie en inrichting voor het inschrijven en uitlezen.
EP0008543B1 (en) * 1978-08-28 1984-05-09 Discovision Associates Method for moulding a videodisc composition
US4245229A (en) * 1979-01-26 1981-01-13 Exxon Research & Engineering Co. Optical recording medium
JPS5634154A (en) * 1979-08-27 1981-04-06 Toshiba Corp Optical disc for write-in
US4285056A (en) * 1979-10-17 1981-08-18 Rca Corporation Replicable optical recording medium

Also Published As

Publication number Publication date
DE3123539A1 (de) 1982-05-27
GB2086638B (en) 1984-09-05
FR2492568A1 (fr) 1982-04-23
FR2492568B1 (fr) 1989-01-13
GB2086638A (en) 1982-05-12
JPS5770695A (en) 1982-05-01
DE3123539C2 (xx) 1989-07-06
NL8102983A (nl) 1982-05-17
US4383311A (en) 1983-05-10
JPH0158079B2 (xx) 1989-12-08
NL191863B (nl) 1996-05-01

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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

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