IT8947751A0 - Stampo per stampare a colata un substrato di un supporto di registrazione, e metodo per preparare il substrato e il supporto di registrazione - Google Patents
Stampo per stampare a colata un substrato di un supporto di registrazione, e metodo per preparare il substrato e il supporto di registrazioneInfo
- Publication number
- IT8947751A0 IT8947751A0 IT8947751A IT4775189A IT8947751A0 IT 8947751 A0 IT8947751 A0 IT 8947751A0 IT 8947751 A IT8947751 A IT 8947751A IT 4775189 A IT4775189 A IT 4775189A IT 8947751 A0 IT8947751 A0 IT 8947751A0
- Authority
- IT
- Italy
- Prior art keywords
- substrate
- recording media
- casting
- mold
- preparing
- Prior art date
Links
- 239000000758 substrate Substances 0.000 title 2
- 238000005266 casting Methods 0.000 title 1
- 238000000034 method Methods 0.000 title 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D17/00—Producing carriers of records containing fine grooves or impressions, e.g. disc records for needle playback, cylinder records; Producing record discs from master stencils
- B29D17/005—Producing optically read record carriers, e.g. optical discs
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C33/00—Moulds or cores; Details thereof or accessories therefor
- B29C33/42—Moulds or cores; Details thereof or accessories therefor characterised by the shape of the moulding surface, e.g. ribs or grooves
- B29C33/424—Moulding surfaces provided with means for marking or patterning
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C39/00—Shaping by casting, i.e. introducing the moulding material into a mould or between confining surfaces without significant moulding pressure; Apparatus therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2017/00—Carriers for sound or information
- B29L2017/001—Carriers of records containing fine grooves or impressions, e.g. disc records for needle playback, cylinder records
- B29L2017/003—Records or discs
- B29L2017/005—CD''s, DVD''s
-
- 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
-
- 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
- Y10S425/00—Plastic article or earthenware shaping or treating: apparatus
- Y10S425/81—Sound record
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacturing Optical Record Carriers (AREA)
- Optical Record Carriers And Manufacture Thereof (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6184488 | 1988-03-17 |
Publications (2)
Publication Number | Publication Date |
---|---|
IT8947751A0 true IT8947751A0 (it) | 1989-03-17 |
IT1231192B IT1231192B (it) | 1991-11-23 |
Family
ID=13182802
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
IT8947751A IT1231192B (it) | 1988-03-17 | 1989-03-17 | Stampo per stampare a colata un substrato di un supporto di registrazione, e metodo per preparare il substrato e il supporto di registrazione |
Country Status (4)
Country | Link |
---|---|
US (2) | US5026510A (it) |
EP (1) | EP0335172B1 (it) |
DE (1) | DE68919105T2 (it) |
IT (1) | IT1231192B (it) |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5234633A (en) * | 1987-12-28 | 1993-08-10 | Canon Kabushiki Kaisha | Cast molding die and process for producing information recording medium using the same |
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 |
US5324188A (en) * | 1989-12-19 | 1994-06-28 | Canon Kabushiki Kaisha | Roller stamper for molding a substrate sheet to become an information recording medium |
US5281371A (en) * | 1990-11-16 | 1994-01-25 | Canon Kabushiki Kaisha | Method and apparatus for forming substrate sheet for optical recording medium |
US5742432A (en) * | 1991-12-19 | 1998-04-21 | Bianco; James S. | Apparatus for manufacture of diffraction gratings for identification means |
US5575962A (en) * | 1994-12-02 | 1996-11-19 | Lucent Technologies Inc. | Method for fabricating optical quality molds with precision microfeatures |
US6750073B2 (en) * | 2002-09-30 | 2004-06-15 | Minuta Technology Co., Ltd. | Method for forming a mask pattern |
US7573231B2 (en) * | 2003-12-23 | 2009-08-11 | Uniden Corporation | Recharging terminal |
CA2567936C (en) | 2006-11-14 | 2016-01-05 | Atomic Energy Of Canada Limited | Device and method for surface replication |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3882214A (en) * | 1973-02-09 | 1975-05-06 | Rca Corp | Trapezoidal smooth grooves for video disc |
FR2235449A1 (it) * | 1973-06-29 | 1975-01-24 | Thomson Brandt | |
NL7810462A (nl) * | 1978-10-19 | 1980-04-22 | Philips Nv | Registratiedrager waarin informatie is aangebracht in een optisch uitleesbare stralingsreflekterende informatiestruktuur |
FR2445761A1 (fr) * | 1979-01-04 | 1980-08-01 | Thomson Brandt | Procede de fabrication de disques souples et dispositif destine a la mise en oeuvre de ce procede |
US4430401A (en) * | 1979-06-13 | 1984-02-07 | Discovision Associates | Method for producing a recording disc stamper |
JPS58158225A (ja) * | 1982-03-15 | 1983-09-20 | Toshiba Corp | 情報記録用基板の製造方法 |
JPS6085724U (ja) * | 1983-11-17 | 1985-06-13 | シャープ株式会社 | 光メモリ円板 |
NL8402681A (nl) * | 1984-09-03 | 1986-04-01 | Philips Nv | Optisch uitleesbare informatieschijf en methode voor de vervaardiging ervan. |
JPS6192450A (ja) * | 1984-10-11 | 1986-05-10 | Sumitomo Bakelite Co Ltd | 光学的記録媒体用基板および基板成形方法 |
EP0197256A3 (en) * | 1985-02-11 | 1989-02-22 | Arthur M. Gerber | System and method for recording digital information |
US4900902A (en) * | 1985-12-19 | 1990-02-13 | Canon Kabushiki Kaisha | Data communication apparatus |
US4743409A (en) * | 1986-05-27 | 1988-05-10 | Sekisui Kagaku Kogyo Kabushiki Kaisha | Process for preparing a substrate for optical recording media |
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 |
-
1989
- 1989-03-10 US US07/321,404 patent/US5026510A/en not_active Expired - Lifetime
- 1989-03-15 DE DE68919105T patent/DE68919105T2/de not_active Expired - Fee Related
- 1989-03-15 EP EP89104590A patent/EP0335172B1/en not_active Expired - Lifetime
- 1989-03-17 IT IT8947751A patent/IT1231192B/it active
-
1991
- 1991-04-11 US US07/683,859 patent/US5122313A/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
US5026510A (en) | 1991-06-25 |
EP0335172A2 (en) | 1989-10-04 |
IT1231192B (it) | 1991-11-23 |
US5122313A (en) | 1992-06-16 |
DE68919105D1 (de) | 1994-12-08 |
EP0335172A3 (en) | 1992-01-02 |
DE68919105T2 (de) | 1995-03-23 |
EP0335172B1 (en) | 1994-11-02 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
TA | Fee payment date (situation as of event date), data collected since 19931001 |
Effective date: 19970314 |