GB899483A - Magnetic recording members - Google Patents

Magnetic recording members

Info

Publication number
GB899483A
GB899483A GB36157/60A GB3615760A GB899483A GB 899483 A GB899483 A GB 899483A GB 36157/60 A GB36157/60 A GB 36157/60A GB 3615760 A GB3615760 A GB 3615760A GB 899483 A GB899483 A GB 899483A
Authority
GB
United Kingdom
Prior art keywords
binder
magnetic
tapes
remanence
oct
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
GB36157/60A
Other languages
English (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.)
EIDP Inc
Original Assignee
EI Du Pont de Nemours and Co
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 EI Du Pont de Nemours and Co filed Critical EI Du Pont de Nemours and Co
Publication of GB899483A publication Critical patent/GB899483A/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
    • G11B5/84—Processes or apparatus specially adapted for manufacturing record carriers
    • G11B5/842—Coating a support with a liquid magnetic dispersion
    • G11B5/845—Coating a support with a liquid magnetic dispersion in a magnetic field
    • 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
    • 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
    • G11B5/70636—CrO2
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S264/00—Plastic and nonmetallic article shaping or treating: processes
    • Y10S264/58—Processes of forming magnets

Landscapes

  • Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Paints Or Removers (AREA)
  • Magnetic Record Carriers (AREA)
  • Manufacturing Of Magnetic Record Carriers (AREA)
GB36157/60A 1959-10-22 1960-10-21 Magnetic recording members Expired GB899483A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US847974A US3080319A (en) 1959-10-22 1959-10-22 Magnetic recording members and their preparation

Publications (1)

Publication Number Publication Date
GB899483A true GB899483A (en) 1962-06-20

Family

ID=25301998

Family Applications (1)

Application Number Title Priority Date Filing Date
GB36157/60A Expired GB899483A (en) 1959-10-22 1960-10-21 Magnetic recording members

Country Status (5)

Country Link
US (1) US3080319A (US07714131-20100511-C00038.png)
BE (1) BE596224A (US07714131-20100511-C00038.png)
FR (1) FR1273085A (US07714131-20100511-C00038.png)
GB (1) GB899483A (US07714131-20100511-C00038.png)
NL (1) NL257041A (US07714131-20100511-C00038.png)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3243260A (en) * 1961-06-12 1966-03-29 Matsushita Electric Ind Co Ltd Method for preparing cro2 of rutile type crystalline structure
DE1238072B (de) * 1964-02-14 1967-04-06 Agfa Ag Schichtfoermiger Magnetspeicher
US3419420A (en) * 1964-11-02 1968-12-31 Eastman Kodak Co Magnetic coating compositions
US3278263A (en) * 1964-11-27 1966-10-11 Du Pont Ferromagnetic chromium dioxide and preparation thereof
US3484286A (en) * 1966-12-05 1969-12-16 Reeves Ind Inc High temperature magnetic tape
US3510489A (en) * 1968-07-31 1970-05-05 Ibm Web fabrication process
US3867299A (en) * 1971-08-11 1975-02-18 Bethlehem Steel Corp Method of making synthetic resin composites with magnetic fillers
EP0043882A1 (en) * 1980-07-16 1982-01-20 Kodak-Pathe Magnetic recording element, process for making the same and its use in recording
US4547534A (en) * 1983-03-18 1985-10-15 Memorex Corporation Method to disperse fine solids without size reduction

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA577428A (en) * 1959-06-09 E.I. Du Pont De Nemours And Company Preparation of ferromagnetic chromium oxide
US2694656A (en) * 1947-07-25 1954-11-16 Armour Res Found Magnetic impulse record member, magnetic material, and method of making magnetic material
US2796359A (en) * 1952-07-05 1957-06-18 Audio Devices Inc Production of magnetic sound recording tape
US2849312A (en) * 1954-02-01 1958-08-26 Milton J Peterman Method of aligning magnetic particles in a non-magnetic matrix
US2937028A (en) * 1954-06-17 1960-05-17 Kane Corp Du Plastic belt for sound recording and reproducing
US2883301A (en) * 1955-08-17 1959-04-21 Celanese Corp Magnetic recording tape
US2900282A (en) * 1956-07-20 1959-08-18 Sperry Rand Corp Method of treating magnetic material and resulting articles
US2911317A (en) * 1957-08-19 1959-11-03 Minnesota Mining & Mfg Magnetic recording media
US2975484A (en) * 1959-09-02 1961-03-21 Du Pont Process for producing films

Also Published As

Publication number Publication date
BE596224A (fr) 1961-04-20
NL257041A (US07714131-20100511-C00038.png)
US3080319A (en) 1963-03-05
FR1273085A (fr) 1961-10-06

Similar Documents

Publication Publication Date Title
GB899483A (en) Magnetic recording members
JPS5236018A (en) Magnetic tape cassette
GB871420A (en) Improvements in demagnetizing apparatus
GB1318579A (en) Methods of making acicular cobalt-modified ypsilon-fe2o3 powder
CH412380A (de) Bandkassette mit zwei Spulen und Verwendung derselben
GB1268458A (en) Improvements in and relating to the preparation of cobalt doped gamma ferric oxide
GB960828A (en) Improvements in or relating to tape-recording apparatus
JPS5284722A (en) Thin film magnetic head and its production
GB1021221A (en) Improvements in or relating to tape recorders
US3595694A (en) Magnetic recording tape
GB1229538A (US07714131-20100511-C00038.png)
GB944293A (en) A process for the production of ferro-magnetic materials having constancy of permeability by heat treatment in a magnetic field
GB1002123A (en) Improvements in and relating to magnetic tape record apparatus
JPS52114499A (en) Cobalttdoped acicular gammaa ferric oxide crystal process for preparing same and magnetic tape
GB944864A (en) Magnetic recording media
USD182079S (en) Photographic lens and exposure control unit
FR2050481A1 (en) Ferromagnetic chromium dioxide prepn
GB1262025A (en) Method of duplicating recorded magnetic tapes
CA635886A (en) Ferromagnetic materials with low coefficient of temperature of the initial magnetic permeability and method of manufacturing same
GB792942A (en) Improvements in magnetic tape sound recording and reproducing apparatus
GB1422874A (en) Teaching aid employing magnetic tape recording
JPS5376811A (en) Magnetic recorder/reproducer
GB905811A (en) A spool to prevent damage in unwinding cinema film
JPS5270815A (en) Magnetic recording and reproducing apparatus
CA614064A (en) Magnetic recording tape and process of making same