GB1095134A – Improvements in magnetic recording medium
– Google Patents
GB1095134A – Improvements in magnetic recording medium
– Google Patents
Improvements in magnetic recording medium
Info
Publication number
GB1095134A
GB1095134A
GB7017/65A
GB701765A
GB1095134A
GB 1095134 A
GB1095134 A
GB 1095134A
GB 7017/65 A
GB7017/65 A
GB 7017/65A
GB 701765 A
GB701765 A
GB 701765A
GB 1095134 A
GB1095134 A
GB 1095134A
Authority
GB
United Kingdom
Prior art keywords
particles
magnetic recording
recording medium
magnetic
mercury
Prior art date
1964-03-26
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
GB7017/65A
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.)
General Electric Co
Original Assignee
General Electric 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.)
1964-03-26
Filing date
1965-02-18
Publication date
1967-12-13
1965-02-18
Application filed by General Electric Co
filed
Critical
General Electric Co
1967-12-13
Publication of GB1095134A
publication
Critical
patent/GB1095134A/en
Status
Expired
legal-status
Critical
Current
Links
Espacenet
Global Dossier
Discuss
230000005291
magnetic effect
Effects
0.000
title
abstract
6
239000002245
particle
Substances
0.000
abstract
5
XEEYBQQBJWHFJM-UHFFFAOYSA-N
iron
Substances
[Fe]
XEEYBQQBJWHFJM-UHFFFAOYSA-N
0.000
abstract
4
238000000151
deposition
Methods
0.000
abstract
2
230000008021
deposition
Effects
0.000
abstract
2
QSHDDOUJBYECFT-UHFFFAOYSA-N
mercury
Chemical compound
[Hg]
QSHDDOUJBYECFT-UHFFFAOYSA-N
0.000
abstract
2
229910052753
mercury
Inorganic materials
0.000
abstract
2
229910000531
Co alloy
Inorganic materials
0.000
abstract
1
229910000640
Fe alloy
Inorganic materials
0.000
abstract
1
230000032683
aging
Effects
0.000
abstract
1
229910045601
alloy
Inorganic materials
0.000
abstract
1
239000000956
alloy
Substances
0.000
abstract
1
QVGXLLKOCUKJST-UHFFFAOYSA-N
atomic oxygen
Chemical compound
[O]
QVGXLLKOCUKJST-UHFFFAOYSA-N
0.000
abstract
1
239000011230
binding agent
Substances
0.000
abstract
1
239000013043
chemical agent
Substances
0.000
abstract
1
229910017052
cobalt
Inorganic materials
0.000
abstract
1
239000010941
cobalt
Substances
0.000
abstract
1
GUTLYIVDDKVIGB-UHFFFAOYSA-N
cobalt atom
Chemical compound
[Co]
GUTLYIVDDKVIGB-UHFFFAOYSA-N
0.000
abstract
1
238000004070
electrodeposition
Methods
0.000
abstract
1
230000005293
ferrimagnetic effect
Effects
0.000
abstract
1
238000005188
flotation
Methods
0.000
abstract
1
229910052742
iron
Inorganic materials
0.000
abstract
1
239000006249
magnetic particle
Substances
0.000
abstract
1
238000004519
manufacturing process
Methods
0.000
abstract
1
229910052760
oxygen
Inorganic materials
0.000
abstract
1
239000001301
oxygen
Substances
0.000
abstract
1
229910052596
spinel
Inorganic materials
0.000
abstract
1
239000011029
spinel
Substances
0.000
abstract
1
238000005292
vacuum distillation
Methods
0.000
abstract
1
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
G11B5/70605—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 metals or alloys
G11B5/70615—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 metals or alloys containing Fe metal or alloys
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
G11B5/712—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 surface treatment or coating of magnetic particles
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
Y10S428/00—Stock material or miscellaneous articles
Y10S428/90—Magnetic feature
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
Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
Y10T428/00—Stock material or miscellaneous articles
Y10T428/25—Web or sheet containing structurally defined element or component and including a second component containing structurally defined particles
Y10T428/256—Heavy metal or aluminum or compound thereof
Y10T428/257—Iron oxide or aluminum oxide
Abstract
1,095,134. Magnetic recording media. GENERAL ELECTRIC CO. Feb. 18, 1965 [March 26, 1964], No. 7017/65. Heading H1H. Magnetic particles of single domain size and comprising Fe/Co alloy cores coated with Fe/Co ferrimagnetic spinel oxide substantially as described in Specification 996,913, are used in the manufacture of magnetic recording media. The alloy particles are prepared by electrodeposition into mercury as described in Specification 815,919. After deposition the particles are heat-aged in the mercury from 1 to 70 hours at 200 to 300 C. This first removes dendritic branches and then increases coercivity. Round or acicular particles may be produced depending on the state of quiencence of the Hg surface on deposition. After ageing the particles are oxidized by moist air or by a chemical agent. Residual Hg is removed by vacuum distillation, or by flotation. The particles which contain 1-15% of oxygen, are dried, milled to break up agglomerates, dispersed in a binder, applied to a support, aligned by a magnetic field and dried to form a magnetic recording medium. The cobalt to iron ratio may lie between 10-90 and 80-20. The magnetic recording medium may be a tape, disc drum, or transfer tape.
GB7017/65A
1964-03-26
1965-02-18
Improvements in magnetic recording medium
Expired
GB1095134A
(en)
Applications Claiming Priority (1)
Application Number
Priority Date
Filing Date
Title
US355103A
US3262812A
(en)
1964-03-26
1964-03-26
Magnetic recording tape with magnetic layer of oxide coated iron-cobalt alloy particles in a binder
Publications (1)
Publication Number
Publication Date
GB1095134A
true
GB1095134A
(en)
1967-12-13
Family
ID=23396231
Family Applications (1)
Application Number
Title
Priority Date
Filing Date
GB7017/65A
Expired
GB1095134A
(en)
1964-03-26
1965-02-18
Improvements in magnetic recording medium
Country Status (7)
Country
Link
US
(1)
US3262812A
(en)
BE
(1)
BE661700A
(en)
CH
(1)
CH473443A
(en)
DE
(1)
DE1489906C3
(en)
GB
(1)
GB1095134A
(en)
NL
(1)
NL145381B
(en)
SE
(1)
SE314456B
(en)
Cited By (2)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
FR2363521A1
(en)
*
1976-09-01
1978-03-31
Basf Ag
ACICULAR MAGNETIC IRON OXIDE, COBALT DOPE, AND PROCESS FOR THE PREPARATION OF THIS OXIDE
FR2369998A1
(en)
*
1976-11-06
1978-06-02
Basf Ag
ACICULAR MAGNETIC IRON OXIDE DOPED BY COBALT AND ITS PREPARATION PROCESS
Families Citing this family (7)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
US3412044A
(en)
*
1965-06-03
1968-11-19
Ampex
Diamine soap as dispersant in magnetic tape formulations
US3505109A
(en)
*
1965-09-29
1970-04-07
Basf Ag
Production of magnetic recording media
JPS4839120B1
(en)
*
1968-06-11
1973-11-21
JPS5288307A
(en)
*
1976-01-20
1977-07-23
Fuji Photo Film Co Ltd
Magnetic recording medium
JPS6047650B2
(en)
*
1976-06-22
1985-10-23
ソニー株式会社
Magnetic recording media and their manufacturing method
US6375108B1
(en)
*
2000-07-13
2002-04-23
Quantum Corporation
Multi-layered drive leader for a tape drive
US8665559B2
(en)
2012-03-19
2014-03-04
Hewlett-Packard Development Company, L.P.
Magnetic head
Family Cites Families (6)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
US2480156A
(en)
*
1944-11-24
1949-08-30
Buel Metals Company
Electrodeposition of iron
US2481079A
(en)
*
1945-01-26
1949-09-06
Chrysler Corp
Method of making electrolytic dendritic powdered iron
GB761451A
(en)
*
1953-06-26
1956-11-14
Gen Electric
Improvements in or relating to magnetic recording media
US2974104A
(en)
*
1955-04-08
1961-03-07
Gen Electric
High-energy magnetic material
US2941901A
(en)
*
1955-07-08
1960-06-21
Agfa Ag
Magnetic impulse record carriers
US2988466A
(en)
*
1957-11-29
1961-06-13
Gen Electric
Magnetic material
1964
1964-03-26
US
US355103A
patent/US3262812A/en
not_active
Expired – Lifetime
1965
1965-02-18
GB
GB7017/65A
patent/GB1095134A/en
not_active
Expired
1965-03-23
CH
CH402965A
patent/CH473443A/en
not_active
IP Right Cessation
1965-03-25
SE
SE3874/65A
patent/SE314456B/xx
unknown
1965-03-26
DE
DE1489906A
patent/DE1489906C3/en
not_active
Expired
1965-03-26
BE
BE661700D
patent/BE661700A/xx
unknown
1965-03-26
NL
NL656503881A
patent/NL145381B/en
unknown
Cited By (2)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
FR2363521A1
(en)
*
1976-09-01
1978-03-31
Basf Ag
ACICULAR MAGNETIC IRON OXIDE, COBALT DOPE, AND PROCESS FOR THE PREPARATION OF THIS OXIDE
FR2369998A1
(en)
*
1976-11-06
1978-06-02
Basf Ag
ACICULAR MAGNETIC IRON OXIDE DOPED BY COBALT AND ITS PREPARATION PROCESS
Also Published As
Publication number
Publication date
BE661700A
(en)
1965-07-16
DE1489906B2
(en)
1973-08-16
DE1489906A1
(en)
1969-04-30
CH473443A
(en)
1969-05-31
NL6503881A
(en)
1965-09-27
US3262812A
(en)
1966-07-26
SE314456B
(en)
1969-09-08
NL145381B
(en)
1975-03-17
DE1489906C3
(en)
1974-04-11
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