BR8003593A - Suporte de registro e disco de gravacao madre para emprego em um aparelho de gravacao, respectivo aparelho de gravacao, processo de produzir um discomatriz metalico e processo de gravacao de um sinal de dados sobre um suporte de registro movel - Google Patents

Suporte de registro e disco de gravacao madre para emprego em um aparelho de gravacao, respectivo aparelho de gravacao, processo de produzir um discomatriz metalico e processo de gravacao de um sinal de dados sobre um suporte de registro movel

Info

Publication number: BR8003593A
Authority: BR; Brazil
Prior art keywords: recording; appliance; registration support; discomatrix; employment
Prior art date: 1979-06-13

Application number

BR8003593A

Other languages

English (en)

Inventor

R Wilkinson

Original Assignee

Discovision Ass

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.)

1979-06-13

Filing date

1980-06-10

Publication date

1981-01-05

1980-06-10 Application filed by Discovision Ass filed Critical Discovision Ass

1981-01-05 Publication of BR8003593A publication Critical patent/BR8003593A/pt

Links

VJYFKVYYMZPMAB-UHFFFAOYSA-N ethoprophos Chemical compound CCCSP(=O)(OCC)SCCC VJYFKVYYMZPMAB-UHFFFAOYSA-N 0.000 title 1
239000002184 metal Substances 0.000 title 1
239000000020 Nitrocellulose Substances 0.000 abstract 1
FJWGYAHXMCUOOM-QHOUIDNNSA-N [(2s,3r,4s,5r,6r)-2-[(2r,3r,4s,5r,6s)-4,5-dinitrooxy-2-(nitrooxymethyl)-6-[(2r,3r,4s,5r,6s)-4,5,6-trinitrooxy-2-(nitrooxymethyl)oxan-3-yl]oxyoxan-3-yl]oxy-3,5-dinitrooxy-6-(nitrooxymethyl)oxan-4-yl] nitrate Chemical compound O([C@@H]1O[C@@H]([C@H]([C@H](O[N+]([O-])=O)[C@H]1O[N+]([O-])=O)O[C@H]1[C@@H]([C@@H](O[N+]([O-])=O)[C@H](O[N+]([O-])=O)[C@@H](CO[N+]([O-])=O)O1)O[N+]([O-])=O)CO[N+](=O)[O-])[C@@H]1[C@@H](CO[N+]([O-])=O)O[C@@H](O[N+]([O-])=O)[C@H](O[N+]([O-])=O)[C@H]1O[N+]([O-])=O FJWGYAHXMCUOOM-QHOUIDNNSA-N 0.000 abstract 1
239000002360 explosive Substances 0.000 abstract 1
239000000463 material Substances 0.000 abstract 1
229920001220 nitrocellulos Polymers 0.000 abstract 1
229940079938 nitrocellulose Drugs 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
- G11B7/004—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
- 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
- G11B23/0057—Intermediate mediums, i.e. mediums provided with an information structure not specific to the method of reproducing or duplication such as matrixes for mechanical pressing of an information structure ; record carriers having a relief information structure provided with or included in layers not specific for a single reproducing method; apparatus or processes specially adapted for their manufacture
- 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
- 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
- G11B7/244—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 organic materials only
- 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
- 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
- G11B7/244—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 organic materials only
- G11B7/246—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 organic materials only containing dyes
- G11B7/2467—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 organic materials only containing dyes azo-dyes
- 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
- G11B7/258—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
- 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
- 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

Manufacturing & Machinery (AREA)
Engineering & Computer Science (AREA)
Optical Recording Or Reproduction (AREA)
Thermal Transfer Or Thermal Recording In General (AREA)
Optical Record Carriers And Manufacture Thereof (AREA)
Manufacturing Optical Record Carriers (AREA)
Exposure Of Semiconductors, Excluding Electron Or Ion Beam Exposure (AREA)
Photographic Developing Apparatuses (AREA)
Time Recorders, Dirve Recorders, Access Control (AREA)
Recording Measured Values (AREA)
Dot-Matrix Printers And Others (AREA)
Printers Or Recording Devices Using Electromagnetic And Radiation Means (AREA)
Facsimile Scanning Arrangements (AREA)
Optical Head (AREA)

BR8003593A 1979-06-13 1980-06-10 Suporte de registro e disco de gravacao madre para emprego em um aparelho de gravacao, respectivo aparelho de gravacao, processo de produzir um discomatriz metalico e processo de gravacao de um sinal de dados sobre um suporte de registro movel BR8003593A (pt)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
US4808179A	1979-06-13	1979-06-13

Publications (1)

Publication Number	Publication Date
BR8003593A true BR8003593A (pt)	1981-01-05

Family

ID=21952638

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
BR8003593A BR8003593A (pt)	1979-06-13	1980-06-10	Suporte de registro e disco de gravacao madre para emprego em um aparelho de gravacao, respectivo aparelho de gravacao, processo de produzir um discomatriz metalico e processo de gravacao de um sinal de dados sobre um suporte de registro movel

Country Status (13)

Country	Link
US (1)	US4430401A (pt)
EP (2)	EP0156040A3 (pt)
JP (1)	JPS5637188A (pt)
KR (4)	KR840002132B1 (pt)
AT (1)	ATE16650T1 (pt)
AU (1)	AU532212B2 (pt)
BR (1)	BR8003593A (pt)
CA (1)	CA1145844A (pt)
DE (1)	DE3071241D1 (pt)
ES (2)	ES8102393A1 (pt)
HK (1)	HK2589A (pt)
MX (2)	MX155195A (pt)
SG (1)	SG64088G (pt)

Families Citing this family (45)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
FR2474223A1 (fr) *	1980-01-23	1981-07-24	Thomson Csf	Procede d'inscription thermo-optique d'information et support d'information destine a la mise en oeuvre de ce procede
FR2488711B1 (fr) *	1980-08-13	1985-06-28	Thomson Csf	Procede thermo-optique d'inscription d'information et support d'information destine a la mise en oeuvre de ce procede
CA1155548A (en) *	1980-10-31	1983-10-18	Richard L. Wilkinson	Optical recording medium and method for its formation
CA1163489A (en) *	1980-10-31	1984-03-13	David L. Atwell	Process for making an imaging medium solution by heating a combination including a dye dispersion and a nitrocellulose solution
US4470053A (en) *	1981-02-13	1984-09-04	Minnesota Mining And Manufacturing Company	Protuberant optical recording medium
US4430659A (en) *	1981-02-13	1984-02-07	Minnesota Mining And Manufacturing Company	Protuberant optical recording medium
JPS57148728A (en) *	1981-03-11	1982-09-14	Canon Inc	Diffusing plate
US4582776A (en) *	1981-10-09	1986-04-15	Pioneer Electronic Corporation	Information recording disc having light absorbing cellulose nitrate coating
JPS5898289A (ja) *	1981-12-07	1983-06-11	Konishiroku Photo Ind Co Ltd	光学的情報記録媒体
JPS58146040A (ja) *	1982-02-24	1983-08-31	Pioneer Video Kk	光学式情報記録原盤
DE3364607D1 (en) *	1982-03-15	1986-08-28	Toshiba Kk	Optical type information recording medium
JPS58158225A (ja) *	1982-03-15	1983-09-20	Toshiba Corp	情報記録用基板の製造方法
US5278026A (en) *	1982-04-06	1994-01-11	Canon Kabushiki Kaisha	Optical recording medium and process for recording thereupon
US5079127A (en) *	1982-04-06	1992-01-07	Canon Kabushiki Kaisha	Optical recording medium and process for recording thereupon
US5246814A (en) *	1982-04-06	1993-09-21	Canon Kabushiki Kaisha	Process for recording on optical recording medium
US5320930A (en) *	1982-04-06	1994-06-14	Canon Kabushiki Kaisha	Optical recording medium and process for recording thereon
US4537670A (en) *	1982-05-28	1985-08-27	Energy Conversion Devices, Inc.	Apparatus for making a stamping master for video disk replication
JPS5919253A (ja) *	1982-07-23	1984-01-31	Sony Corp	情報記録媒体
KR870002142B1 (ko) *	1982-09-20	1987-12-12	디스커비소젼 어시에이츠	광학 기록 매체 및 그의 제조방법
EP0107913B1 (en) *	1982-09-29	1988-06-22	Kabushiki Kaisha Toshiba	Radiation-sensitive carrier body utilized as stamper structure
US4809022A (en) *	1983-06-27	1989-02-28	Optical Disc Corporation	Direct read after write optical storage medium
US4963901A (en) *	1983-06-27	1990-10-16	Optical Disc Corporation	Direct read after write optical storage medium and information storage system
JPS613339A (ja) *	1984-06-18	1986-01-09	Hitachi Ltd	高密度情報記録円板複製用スタンパおよびその製造方法
US4702991A (en) *	1984-10-30	1987-10-27	Kabushiki Kaisha Toshiba	Optical type information recording medium and manufacturing method thereof
DE3712858A1 (de) *	1987-04-15	1988-11-03	Basf Ag	Irreversible optische aufzeichnungsmedien und verfahren zu ihrer herstellung
EP0301641A1 (en) *	1987-07-23	1989-02-01	Koninklijke Philips Electronics N.V.	Master disc and method of manufacturing a matrix
US5214632A (en) *	1987-12-23	1993-05-25	U.S. Philips Corporation	Method of manufacturing a matrix and a master plate suitable for use in the method
US5026510A (en) *	1988-03-17	1991-06-25	Canon Kabushiki Kaisha	Mold for cast molding substrate having preformat with information pits and method of using same
JPH0678590B2 (ja) *	1988-09-19	1994-10-05	パイオニア株式会社	スタンパー製造方法
US5189531A (en) *	1988-10-17	1993-02-23	August DeFazio	Hologram production
US5126180A (en) *	1989-09-12	1992-06-30	Hitachi Maxell, Ltd.	Optical recording medium and method of manufacturing the same
US5324188A (en) *	1989-12-19	1994-06-28	Canon Kabushiki Kaisha	Roller stamper for molding a substrate sheet to become an information recording medium
US5099469A (en) *	1990-02-20	1992-03-24	Del Mar Avionics	Process for manufacturing an optical disc master
US5182188A (en) *	1990-06-29	1993-01-26	General Electric Company	Method of developing a self-developing resist
NL9002594A (nl) *	1990-11-28	1992-06-16	Philips & Du Pont Optical	Masterplaat.
EP0611473B1 (en) *	1991-10-03	1997-05-02	Del Mar Avionics	Optical disc master
FR2701152B1 (fr) *	1993-02-03	1995-03-10	Digipress Sa	Procédé de fabrication d'un disque maître pour la réalisation d'une matrice de pressage notamment de disques optiques, matrice de pressage obtenue par ce procédé et disque optique obtenu à partir de cette matrice de pressage.
US5494782A (en) *	1994-07-29	1996-02-27	Sony Corporation	Direct to stamper/mother optical disk mastering
US5595768A (en) *	1995-11-02	1997-01-21	Komag, Incorporated	Laser disk texturing apparatus
US6623788B1 (en) *	2000-07-25	2003-09-23	Seagate Technology Llc	Defect-free patterning of sol-gel-coated substrates for magnetic recording media
US6761454B2 (en)	2002-02-13	2004-07-13	Ophthonix, Inc.	Apparatus and method for determining objective refraction using wavefront sensing
WO2006072859A2 (en) *	2005-01-06	2006-07-13	Koninklijke Philips Electronics N.V.	Mastering based on heat-induced shrinkage of organic dyes
US20070178287A1 (en) *	2006-01-30	2007-08-02	Abraham Nigel C	Optically variable device mastering system, method of authenticating articles employing the same, and resultant article
JP5202534B2 (ja) *	2006-10-16	2013-06-05	トムソンライセンシング	ポジティブマーク群及びネガティブマーク群を有するトラック群を備える光学記憶媒体、並びにその光学記憶媒体製造のためのスタンパ及び製造方法
FR2929749A1 (fr) *	2008-04-08	2009-10-09	Pascal Andre	Procede et systeme pour l'enregistrement de donnees sous forme d'une nanostructure

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US3465352A (en)	1966-05-11	1969-09-02	Ncr Co	Information processing systems using lasers
US3475760A (en)	1966-10-07	1969-10-28	Ncr Co	Laser film deformation recording and erasing system
DE1574687B2 (de)	1968-02-06	1978-08-10	Robert Bosch Gmbh, 7000 Stuttgart	Aufzeichnungsträger für Informationen
US3665483A (en) *	1969-06-06	1972-05-23	Chase Manhattan Capital Corp	Laser recording medium
DE2347435A1 (de) *	1972-11-22	1974-05-30	Ciba Geigy Ag	Verfahren zur herstellung von informationstraegern
US4225873A (en)	1978-03-27	1980-09-30	Mca Disco-Vision, Inc.	Recording and playback system
FR2235449A1 (pt)	1973-06-29	1975-01-24	Thomson Brandt
DE2439848C2 (de) *	1973-08-20	1985-05-15	Canon K.K., Tokio/Tokyo	Verfahren zum Aufzeichnen mittels eines Laserstrahls
NL165316C (nl)	1973-10-01	1981-03-16	Mca Disco Vision	Werkwijze voor de vervaardiging van een schrijfvormige video-afdrukmatrijs uitgaande van een moederschijf.
US4069487A (en)	1974-12-26	1978-01-17	Canon Kabushiki Kaisha	Recording member and process for recording
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
US4074282A (en) *	1976-05-13	1978-02-14	North American Philips Corporation	Radiation-sensitive record with protected sensitive surface
GB1584779A (en)	1976-09-24	1981-02-18	Agfa Gevaert	Laserbeam recording
FR2368779A1 (fr) *	1976-10-22	1978-05-19	Thomson Brandt	Support thermosensible destine a l'enregistrement d'information et procede d'enregistrement d'information sur un tel support
US4158715A (en)	1976-11-04	1979-06-19	The Singer Company	Laser recording film with opaque coating
US4081653A (en)	1976-12-27	1978-03-28	Western Electric Co., Inc.	Removal of thin films from substrates by laser induced explosion
CA1116752A (en)	1977-07-15	1982-01-19	Gary F. Schiefelbein	Photsensitive material for optical digital recording and high density information storage
NL7809159A (nl) *	1977-09-29	1979-04-02	Philips Nv	Informatieregistratie element met kleurstof bevattende hulplaag.

1980
- 1980-05-05 US US06/146,820 patent/US4430401A/en not_active Expired - Lifetime
- 1980-05-29 AU AU58882/80A patent/AU532212B2/en not_active Expired
- 1980-05-29 CA CA000353005A patent/CA1145844A/en not_active Expired
- 1980-06-05 DE DE8080301884T patent/DE3071241D1/de not_active Expired
- 1980-06-05 EP EP84201062A patent/EP0156040A3/en not_active Withdrawn
- 1980-06-05 EP EP80301884A patent/EP0022313B1/en not_active Expired
- 1980-06-05 AT AT80301884T patent/ATE16650T1/de not_active IP Right Cessation
- 1980-06-10 BR BR8003593A patent/BR8003593A/pt not_active IP Right Cessation
- 1980-06-11 MX MX195381A patent/MX155195A/es unknown
- 1980-06-11 MX MX182726A patent/MX149614A/es unknown
- 1980-06-12 ES ES492382A patent/ES8102393A1/es not_active Expired
- 1980-06-12 KR KR1019800002310A patent/KR840002132B1/ko not_active Expired
- 1980-06-13 JP JP7914880A patent/JPS5637188A/ja active Pending
- 1980-09-22 ES ES495232A patent/ES495232A0/es active Granted
1983
- 1983-09-27 KR KR1019830004531A patent/KR840002130B1/ko not_active Expired
- 1983-09-27 KR KR1019830004530A patent/KR840002129B1/ko not_active Expired
- 1983-09-27 KR KR1019830004533A patent/KR840002131B1/ko not_active Expired
1988
- 1988-09-28 SG SG640/88A patent/SG64088G/en unknown
1989
- 1989-01-12 HK HK25/89A patent/HK2589A/en not_active IP Right Cessation

Also Published As

Publication number	Publication date
EP0022313A1 (en)	1981-01-14
AU5888280A (en)	1980-12-18
KR840002132B1 (ko)	1984-11-19
ATE16650T1 (de)	1985-12-15
EP0156040A3 (en)	1986-02-05
MX155195A (es)	1988-02-01
ES492382A0 (es)	1980-12-16
HK2589A (en)	1989-01-20
KR840002131B1 (ko)	1984-11-19
CA1145844A (en)	1983-05-03
ES8102393A1 (es)	1980-12-16
KR840002130B1 (ko)	1984-11-19
SG64088G (en)	1989-03-10
EP0156040A2 (en)	1985-10-02
ES8106626A1 (es)	1981-07-01
KR840002129B1 (ko)	1984-11-19
ES495232A0 (es)	1981-07-01
AU532212B2 (en)	1983-09-22
MX149614A (es)	1983-12-01
US4430401A (en)	1984-02-07
DE3071241D1 (en)	1986-01-02
JPS5637188A (en)	1981-04-10
EP0022313B1 (en)	1985-11-21

Legal Events

Date

Code

Title

Description

1995-09-12

MK

Patent expired

Effective date: 19950610

1997-06-17

RH

Request refused

2018-03-20

B15K

Others concerning applications: alteration of classification

Free format text: PROCEDIMENTO AUTOMATICO DE RECLASSIFICACAO. AS CLASSIFICACOES IPC ANTERIORES ERAM: G11B 1/00; G11B 7/26; G11B 7/00.

Ipc: G11B 7/0045 (2006.01), G11B 7/241 (2006.01), G11B

Publication	Publication Date	Title
MX149614A (es)	1983-12-01	Mejoras a un disco maestro para grabacion de informacion mediante radiacion luminosa
DE3789762D1 (de)	1994-06-09	Löschbares optisches Datenspeichermedium mit einer eingebetteten Servospur und einer unterflächigen Aufnahmeschnittstelle.
JPS57105828A (en)	1982-07-01	Optical disk recording and reproducing system
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