FR1052259A - Method of printing guide grooves in disc-shaped magnetogram carriers - Google Patents
Method of printing guide grooves in disc-shaped magnetogram carriersInfo
- Publication number
- FR1052259A FR1052259A FR1052259DA FR1052259A FR 1052259 A FR1052259 A FR 1052259A FR 1052259D A FR1052259D A FR 1052259DA FR 1052259 A FR1052259 A FR 1052259A
- Authority
- FR
- France
- Prior art keywords
- disc
- shaped
- guide grooves
- printing guide
- magnetogram carriers
- Prior art date
- 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
- 239000000969 carrier Substances 0.000 title 1
Classifications
-
- 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
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE1052259X | 1951-07-07 |
Publications (1)
Publication Number | Publication Date |
---|---|
FR1052259A true FR1052259A (en) | 1954-01-22 |
Family
ID=7717597
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR1052259D Expired FR1052259A (en) | 1951-07-07 | 1952-03-10 | Method of printing guide grooves in disc-shaped magnetogram carriers |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR1052259A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0130900A1 (en) * | 1983-07-04 | 1985-01-09 | Thomson-Csf | Process for manufacturing optical discs by pressing, and discs made thereby |
-
1952
- 1952-03-10 FR FR1052259D patent/FR1052259A/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0130900A1 (en) * | 1983-07-04 | 1985-01-09 | Thomson-Csf | Process for manufacturing optical discs by pressing, and discs made thereby |
FR2548578A1 (en) * | 1983-07-04 | 1985-01-11 | Thomson Csf | METHOD FOR MANUFACTURING OPTICAL DISCS BY PRESSING AND DISK OBTAINED BY SUCH A METHOD |
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