JPS56117346A - Information recording medium - Google Patents

Information recording medium

Info

Publication number
JPS56117346A
JPS56117346A JP2084580A JP2084580A JPS56117346A JP S56117346 A JPS56117346 A JP S56117346A JP 2084580 A JP2084580 A JP 2084580A JP 2084580 A JP2084580 A JP 2084580A JP S56117346 A JPS56117346 A JP S56117346A
Authority
JP
Japan
Prior art keywords
substrate
recording
information
powder material
capacity
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
JP2084580A
Other languages
English (en)
Other versions
JPS6321259B2 (ja
Inventor
Osamu Kumasaka
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.)
Pioneer Corp
Original Assignee
Pioneer Electronic Corp
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 Pioneer Electronic Corp filed Critical Pioneer Electronic Corp
Priority to JP2084580A priority Critical patent/JPS56117346A/ja
Publication of JPS56117346A publication Critical patent/JPS56117346A/ja
Publication of JPS6321259B2 publication Critical patent/JPS6321259B2/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
    • G11B13/00—Recording simultaneously or selectively by methods covered by different main groups among G11B3/00, G11B5/00, G11B7/00 and G11B9/00; Record carriers therefor not otherwise provided for; Reproducing therefrom not otherwise provided for
JP2084580A 1980-02-21 1980-02-21 Information recording medium Granted JPS56117346A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2084580A JPS56117346A (en) 1980-02-21 1980-02-21 Information recording medium

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2084580A JPS56117346A (en) 1980-02-21 1980-02-21 Information recording medium

Publications (2)

Publication Number Publication Date
JPS56117346A true JPS56117346A (en) 1981-09-14
JPS6321259B2 JPS6321259B2 (ja) 1988-05-06

Family

ID=12038408

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2084580A Granted JPS56117346A (en) 1980-02-21 1980-02-21 Information recording medium

Country Status (1)

Country Link
JP (1) JPS56117346A (ja)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4556597A (en) * 1983-08-22 1985-12-03 International Business Machines Corporation Ion doped servo pattern for magnetic recording disk
US4639906A (en) * 1981-04-07 1987-01-27 Victor Company Of Japan, Limited Magnetic recording on tracking controlled grooveless medium having magnetic and capacitance properties

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4840417A (ja) * 1971-09-21 1973-06-14
JPS5215584A (en) * 1975-07-25 1977-02-05 Rca Corp Laminates
JPS53119017A (en) * 1977-03-28 1978-10-18 Victor Co Of Japan Ltd Capacity conversion type information recording medium
JPS54147008A (en) * 1978-05-10 1979-11-16 Matsushita Electric Ind Co Ltd Magnetic recording medium
JPS54148422A (en) * 1978-05-15 1979-11-20 Gen Corp Video disk player

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4840417A (ja) * 1971-09-21 1973-06-14
JPS5215584A (en) * 1975-07-25 1977-02-05 Rca Corp Laminates
JPS53119017A (en) * 1977-03-28 1978-10-18 Victor Co Of Japan Ltd Capacity conversion type information recording medium
JPS54147008A (en) * 1978-05-10 1979-11-16 Matsushita Electric Ind Co Ltd Magnetic recording medium
JPS54148422A (en) * 1978-05-15 1979-11-20 Gen Corp Video disk player

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4639906A (en) * 1981-04-07 1987-01-27 Victor Company Of Japan, Limited Magnetic recording on tracking controlled grooveless medium having magnetic and capacitance properties
US4556597A (en) * 1983-08-22 1985-12-03 International Business Machines Corporation Ion doped servo pattern for magnetic recording disk

Also Published As

Publication number Publication date
JPS6321259B2 (ja) 1988-05-06

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