AU469886B2 - Improved cobalt and zinc ferrites and magnetic recording tape thereof - Google Patents

Improved cobalt and zinc ferrites and magnetic recording tape thereof

Info

Publication number
AU469886B2
AU469886B2 AU59592/73A AU5959273A AU469886B2 AU 469886 B2 AU469886 B2 AU 469886B2 AU 59592/73 A AU59592/73 A AU 59592/73A AU 5959273 A AU5959273 A AU 5959273A AU 469886 B2 AU469886 B2 AU 469886B2
Authority
AU
Australia
Prior art keywords
magnetic recording
recording tape
zinc ferrites
improved cobalt
cobalt
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
AU59592/73A
Other languages
English (en)
Other versions
AU5959273A (en
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.)
RCA Corp
Original Assignee
RCA 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 RCA Corp filed Critical RCA Corp
Publication of AU5959273A publication Critical patent/AU5959273A/en
Application granted granted Critical
Publication of AU469886B2 publication Critical patent/AU469886B2/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
    • G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/62—Record carriers characterised by the selection of the material
    • G11B5/68—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent
    • G11B5/70—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer
    • G11B5/706—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer characterised by the composition of the magnetic material
    • G11B5/70626—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer characterised by the composition of the magnetic material containing non-metallic substances
    • G11B5/70642—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer characterised by the composition of the magnetic material containing non-metallic substances iron oxides
    • G11B5/70678—Ferrites
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/62—Record carriers characterised by the selection of the material
    • G11B5/68—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent
    • G11B5/70—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer
    • G11B5/714—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer characterised by the dimension of the magnetic particles
AU59592/73A 1972-09-07 1973-08-24 Improved cobalt and zinc ferrites and magnetic recording tape thereof Expired AU469886B2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US28692672A 1972-09-07 1972-09-07
USUS286926 1972-09-07

Publications (2)

Publication Number Publication Date
AU5959273A AU5959273A (en) 1975-02-27
AU469886B2 true AU469886B2 (en) 1976-02-26

Family

ID=23100740

Family Applications (1)

Application Number Title Priority Date Filing Date
AU59592/73A Expired AU469886B2 (en) 1972-09-07 1973-08-24 Improved cobalt and zinc ferrites and magnetic recording tape thereof

Country Status (11)

Country Link
JP (1) JPS547076B2 (enExample)
AU (1) AU469886B2 (enExample)
BE (1) BE804556A (enExample)
CA (1) CA1021148A (enExample)
DE (1) DE2343701A1 (enExample)
ES (1) ES418329A1 (enExample)
FR (1) FR2198908B1 (enExample)
GB (1) GB1436135A (enExample)
IT (1) IT993890B (enExample)
NL (1) NL7312283A (enExample)
SE (1) SE393889B (enExample)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2916403A1 (de) 1979-04-23 1980-11-06 Basf Ag Nadelfoermiges magnetisches eisenoxid und verfahren zu seiner herstellung

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3654163A (en) * 1968-02-27 1972-04-04 Sony Corp Cobalt ferrite magnetic powder for tape recording

Also Published As

Publication number Publication date
DE2343701A1 (de) 1974-03-14
CA1021148A (en) 1977-11-22
BE804556A (fr) 1974-01-02
FR2198908A1 (enExample) 1974-04-05
IT993890B (it) 1975-09-30
FR2198908B1 (enExample) 1978-11-10
ES418329A1 (es) 1976-03-16
NL7312283A (enExample) 1974-03-11
JPS4969103A (enExample) 1974-07-04
SE393889B (sv) 1977-05-23
AU5959273A (en) 1975-02-27
JPS547076B2 (enExample) 1979-04-03
GB1436135A (en) 1976-05-19

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