FR1052259A - Method of printing guide grooves in disc-shaped magnetogram carriers - Google Patents

Method of printing guide grooves in disc-shaped magnetogram carriers

Info

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
Application number
Other languages
French (fr)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Dynamit Nobel AG
Original Assignee
Dynamit Nobel AG
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 Dynamit Nobel AG filed Critical Dynamit Nobel AG
Application granted granted Critical
Publication of FR1052259A publication Critical patent/FR1052259A/en
Expired legal-status Critical Current

Links

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
FR1052259D 1951-07-07 1952-03-10 Method of printing guide grooves in disc-shaped magnetogram carriers Expired FR1052259A (en)

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)

* Cited by examiner, † Cited by third party
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

Cited By (2)

* Cited by examiner, † Cited by third party
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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