JPS49119601A - - Google Patents
Info
- Publication number
- JPS49119601A JPS49119601A JP49019838A JP1983874A JPS49119601A JP S49119601 A JPS49119601 A JP S49119601A JP 49019838 A JP49019838 A JP 49019838A JP 1983874 A JP1983874 A JP 1983874A JP S49119601 A JPS49119601 A JP S49119601A
- Authority
- JP
- Japan
- 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.)
- Pending
Links
Classifications
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B3/00—Recording by mechanical cutting, deforming or pressing, e.g. of grooves or pits; Reproducing by mechanical sensing; Record carriers therefor
- G11B3/44—Styli, e.g. sapphire, diamond
- G11B3/56—Sharpening
Landscapes
- Grinding And Polishing Of Tertiary Curved Surfaces And Surfaces With Complex Shapes (AREA)
- Manufacturing Of Magnetic Record Carriers (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
- Polishing Bodies And Polishing Tools (AREA)
- Shaping Of Tube Ends By Bending Or Straightening (AREA)
- Manufacturing Optical Record Carriers (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19732308891 DE2308891C3 (de) | 1973-02-23 | Verfahren zur Herstellung von Matrizen zum Prägen von Rillen in Folien, insbesondere in Schleiffolien für das Anschleifen von Abtastern für Bildplatten |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS49119601A true JPS49119601A (ja) | 1974-11-15 |
Family
ID=5872792
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP49019838A Pending JPS49119601A (ja) | 1973-02-23 | 1974-02-19 |
Country Status (10)
| Country | Link |
|---|---|
| US (1) | US3956075A (ja) |
| JP (1) | JPS49119601A (ja) |
| AT (1) | AT336914B (ja) |
| BE (1) | BE811297A (ja) |
| CH (1) | CH567769A5 (ja) |
| FR (1) | FR2219479B3 (ja) |
| GB (1) | GB1457350A (ja) |
| IT (1) | IT1008289B (ja) |
| NL (1) | NL7401654A (ja) |
| SE (1) | SE391053B (ja) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2821297C3 (de) * | 1978-05-16 | 1981-09-17 | Teldec Telefunken-Decca-Schallplatten Gmbh, 2000 Hamburg | Verfahren zur Herstellung eines plattenförmigen Informationsträgers |
| US4394341A (en) * | 1982-02-01 | 1983-07-19 | Rca Corporation | Method to center and separate electroformed replicas from a matrix |
| US4431487A (en) * | 1983-06-30 | 1984-02-14 | Rca Corporation | Matrixing apparatus and method for use in the manufacture of molded records |
| US4479853A (en) * | 1984-03-29 | 1984-10-30 | Rca Corporation | Method for the manufacture of record stampers |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE637310C (de) * | 1936-10-26 | Fedor Geske | Verfahren zum Herstellen von Schallplatten | |
| US2092880A (en) * | 1933-09-26 | 1937-09-14 | Rca Corp | Record pressing matrix |
| US2067502A (en) * | 1934-08-16 | 1937-01-12 | Bell Telephone Labor Inc | Art of duplicating phonograph records |
| US3584094A (en) * | 1969-01-08 | 1971-06-08 | Pic Tur Records Inc | Method of making picture-type phonograph records |
| JPS4932124B1 (ja) * | 1970-05-25 | 1974-08-28 | ||
| US3801476A (en) * | 1972-03-01 | 1974-04-02 | Teldec Telefunken Decca | Method for improving the centering of stamping matrices |
-
1974
- 1974-02-06 NL NL7401654A patent/NL7401654A/xx not_active Application Discontinuation
- 1974-02-15 AT AT123874A patent/AT336914B/de not_active IP Right Cessation
- 1974-02-18 SE SE7402124A patent/SE391053B/xx unknown
- 1974-02-19 JP JP49019838A patent/JPS49119601A/ja active Pending
- 1974-02-20 BE BE141146A patent/BE811297A/xx unknown
- 1974-02-20 IT IT48613/74A patent/IT1008289B/it active
- 1974-02-21 CH CH246574A patent/CH567769A5/xx not_active IP Right Cessation
- 1974-02-21 US US05/444,345 patent/US3956075A/en not_active Expired - Lifetime
- 1974-02-22 FR FR7406204A patent/FR2219479B3/fr not_active Expired
- 1974-02-25 GB GB847974A patent/GB1457350A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR2219479B3 (ja) | 1976-12-03 |
| IT1008289B (it) | 1976-11-10 |
| BE811297A (fr) | 1974-06-17 |
| GB1457350A (en) | 1976-12-01 |
| FR2219479A1 (ja) | 1974-09-20 |
| CH567769A5 (ja) | 1975-10-15 |
| ATA123874A (de) | 1976-09-15 |
| AT336914B (de) | 1977-06-10 |
| DE2308891A1 (de) | 1974-09-05 |
| NL7401654A (ja) | 1974-08-27 |
| DE2308891B2 (de) | 1975-09-04 |
| US3956075A (en) | 1976-05-11 |
| SE391053B (sv) | 1977-01-31 |