JPS529403A - Bulge recording disc used for electronic computer and so on - Google Patents

Bulge recording disc used for electronic computer and so on

Info

Publication number
JPS529403A
JPS529403A JP8532375A JP8532375A JPS529403A JP S529403 A JPS529403 A JP S529403A JP 8532375 A JP8532375 A JP 8532375A JP 8532375 A JP8532375 A JP 8532375A JP S529403 A JPS529403 A JP S529403A
Authority
JP
Japan
Prior art keywords
bulge
electronic computer
recording disc
disc used
recording
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.)
Granted
Application number
JP8532375A
Other languages
Japanese (ja)
Other versions
JPS5515773B2 (en
Inventor
Yoshiro Nakamatsu
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to JP8532375A priority Critical patent/JPS529403A/en
Publication of JPS529403A publication Critical patent/JPS529403A/en
Publication of JPS5515773B2 publication Critical patent/JPS5515773B2/ja
Granted 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
    • G11B23/0014—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 record carriers not specifically of filamentary or web form
    • G11B23/0021—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 record carriers not specifically of filamentary or web form discs
    • G11B23/005—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 record carriers not specifically of filamentary or web form discs flexible discs

Landscapes

  • Magnetic Record Carriers (AREA)

Abstract

PURPOSE:In order to furnish a floppy disk or a diskette which can keep the adequate torque.
JP8532375A 1975-07-14 1975-07-14 Bulge recording disc used for electronic computer and so on Granted JPS529403A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8532375A JPS529403A (en) 1975-07-14 1975-07-14 Bulge recording disc used for electronic computer and so on

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8532375A JPS529403A (en) 1975-07-14 1975-07-14 Bulge recording disc used for electronic computer and so on

Publications (2)

Publication Number Publication Date
JPS529403A true JPS529403A (en) 1977-01-25
JPS5515773B2 JPS5515773B2 (en) 1980-04-25

Family

ID=13855402

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8532375A Granted JPS529403A (en) 1975-07-14 1975-07-14 Bulge recording disc used for electronic computer and so on

Country Status (1)

Country Link
JP (1) JPS529403A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008234720A (en) * 2007-03-19 2008-10-02 Ricoh Co Ltd Disc transport method, disc cartridge, and information recording / reproducing apparatus

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4929804A (en) * 1972-07-13 1974-03-16
JPS4940501A (en) * 1972-08-18 1974-04-16
US3879757A (en) * 1974-03-01 1975-04-22 Ibm Data storage mechanism having a flexible magnetic disk
JPS5166818A (en) * 1974-10-07 1976-06-09 Minnesota Mining & Mfg
JPS51107807A (en) * 1975-03-03 1976-09-24 Information Terminals Corp Jikideisukukirokukumitatetai
JPS528405U (en) * 1975-07-04 1977-01-21
JPS5246087U (en) * 1975-08-12 1977-04-01

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4929804A (en) * 1972-07-13 1974-03-16
JPS4940501A (en) * 1972-08-18 1974-04-16
US3879757A (en) * 1974-03-01 1975-04-22 Ibm Data storage mechanism having a flexible magnetic disk
JPS5166818A (en) * 1974-10-07 1976-06-09 Minnesota Mining & Mfg
JPS51107807A (en) * 1975-03-03 1976-09-24 Information Terminals Corp Jikideisukukirokukumitatetai
JPS528405U (en) * 1975-07-04 1977-01-21
JPS5246087U (en) * 1975-08-12 1977-04-01

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008234720A (en) * 2007-03-19 2008-10-02 Ricoh Co Ltd Disc transport method, disc cartridge, and information recording / reproducing apparatus

Also Published As

Publication number Publication date
JPS5515773B2 (en) 1980-04-25

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