GB1249642A – Magnetic memory carrier
– Google Patents
GB1249642A – Magnetic memory carrier
– Google Patents
Magnetic memory carrier
Info
Publication number
GB1249642A
GB1249642A
GB34675/68A
GB3467568A
GB1249642A
GB 1249642 A
GB1249642 A
GB 1249642A
GB 34675/68 A
GB34675/68 A
GB 34675/68A
GB 3467568 A
GB3467568 A
GB 3467568A
GB 1249642 A
GB1249642 A
GB 1249642A
Authority
GB
United Kingdom
Prior art keywords
caviar
magnetic
copper
thin film
magnetic memory
Prior art date
1967-08-09
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
GB34675/68A
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.)
Honeywell Inc
Original Assignee
Honeywell Inc
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.)
1967-08-09
Filing date
1968-07-19
Publication date
1971-10-13
1968-07-19
Application filed by Honeywell Inc
filed
Critical
Honeywell Inc
1971-10-13
Publication of GB1249642A
publication
Critical
patent/GB1249642A/en
Status
Expired
legal-status
Critical
Current
Links
Espacenet
Global Dossier
Discuss
230000005291
magnetic effect
Effects
0.000
title
abstract
5
ZPUCINDJVBIVPJ-LJISPDSOSA-N
cocaine
Chemical compound
O([C@H]1C[C@@H]2CC[C@@H](N2C)[C@H]1C(=O)OC)C(=O)C1=CC=CC=C1
ZPUCINDJVBIVPJ-LJISPDSOSA-N
0.000
abstract
3
239000010949
copper
Substances
0.000
abstract
3
RYGMFSIKBFXOCR-UHFFFAOYSA-N
Copper
Chemical compound
[Cu]
RYGMFSIKBFXOCR-UHFFFAOYSA-N
0.000
abstract
2
PXHVJJICTQNCMI-UHFFFAOYSA-N
Nickel
Chemical compound
[Ni]
PXHVJJICTQNCMI-UHFFFAOYSA-N
0.000
abstract
2
229910052802
copper
Inorganic materials
0.000
abstract
2
239000010408
film
Substances
0.000
abstract
2
239000000463
material
Substances
0.000
abstract
2
239000010409
thin film
Substances
0.000
abstract
2
229910003271
Ni-Fe
Inorganic materials
0.000
abstract
1
230000001070
adhesive effect
Effects
0.000
abstract
1
229910045601
alloy
Inorganic materials
0.000
abstract
1
239000000956
alloy
Substances
0.000
abstract
1
230000015572
biosynthetic process
Effects
0.000
abstract
1
239000003302
ferromagnetic material
Substances
0.000
abstract
1
PCHJSUWPFVWCPO-UHFFFAOYSA-N
gold
Chemical compound
[Au]
PCHJSUWPFVWCPO-UHFFFAOYSA-N
0.000
abstract
1
229910052737
gold
Inorganic materials
0.000
abstract
1
239000010931
gold
Substances
0.000
abstract
1
229910052759
nickel
Inorganic materials
0.000
abstract
1
230000035945
sensitivity
Effects
0.000
abstract
1
238000009827
uniform distribution
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
H—ELECTRICITY
H01—ELECTRIC ELEMENTS
H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
H01F10/00—Thin magnetic films, e.g. of one-domain structure
H—ELECTRICITY
H01—ELECTRIC ELEMENTS
H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
H01F10/00—Thin magnetic films, e.g. of one-domain structure
H01F10/06—Thin magnetic films, e.g. of one-domain structure characterised by the coupling or physical contact with connecting or interacting conductors
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
Y10S205/00—Electrolysis: processes, compositions used therein, and methods of preparing the compositions
Y10S205/922—Electrolytic coating of magnetic storage medium, other than selected area coating
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
Y10T428/29—Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
Y10T428/2913—Rod, strand, filament or fiber
Y10T428/2933—Coated or with bond, impregnation or core
Y10T428/294—Coated or with bond, impregnation or core including metal or compound thereof [excluding glass, ceramic and asbestos]
Y10T428/2958—Metal or metal compound in coating
Abstract
1,249,642. Magnetic structures. HONEYWELL Inc. 19 July, 1968 [9 Aug., 1967], No. 34675/68. Heading H1H. [Also in Division C7] A magnetic memory carrier bears a magnetic thin film having a uniform distribution of partsphere protrusions of diameter between 0.3 and 20 Á, preferably 1 to 4 Á. As described the carrier is a Be-Cu wire which has been electroplated with copper so as to produce a «caviar» surface (see Division C7), a thin film of non- magnetostrictive Ni-Fe alloy being uniformly electrodeposited thereover. Reference is made to the use of a non-ferromagnetic material other than copper such as electroless nickel or gold to form the » caviar » surface and also vaguely to using more than one layer of deposited material including material with dielectric, conductive or adhesive properties in the formation of the » caviar » finish. Magnetic films having such a finish provide better characteristics as regards output and disturbance sensitivity compared with smooth films.
GB34675/68A
1967-08-09
1968-07-19
Magnetic memory carrier
Expired
GB1249642A
(en)
Applications Claiming Priority (1)
Application Number
Priority Date
Filing Date
Title
US65938867A
1967-08-09
1967-08-09
Publications (1)
Publication Number
Publication Date
GB1249642A
true
GB1249642A
(en)
1971-10-13
Family
ID=24645201
Family Applications (1)
Application Number
Title
Priority Date
Filing Date
GB34675/68A
Expired
GB1249642A
(en)
1967-08-09
1968-07-19
Magnetic memory carrier
Country Status (7)
Country
Link
US
(1)
US3549507A
(en)
BE
(1)
BE719313A
(en)
CH
(1)
CH507569A
(en)
DE
(1)
DE1764799A1
(en)
FR
(1)
FR1604840A
(en)
GB
(1)
GB1249642A
(en)
NL
(1)
NL6811411A
(en)
Families Citing this family (5)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
FR2176471A1
(en)
*
1972-03-20
1973-11-02
Honeywell Bull Soc Ind
Treating thin magnetic film supports – by copper electroplating, for memory elements
US3887338A
(en)
*
1973-06-29
1975-06-03
Sperry Rand Corp
Plated wire memory
US3994786A
(en)
*
1975-06-13
1976-11-30
Gte Sylvania Incorporated
Electroplating device and method
US5176808A
(en)
*
1989-11-06
1993-01-05
Gte Products Corporation
High current density continuous wire plating cell
WO1996033298A1
(en)
*
1995-04-17
1996-10-24
The Board Of Trustees Of The University Of Arkansas
Method of electroplating a substrate, and products made thereby
Family Cites Families (2)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
US2695269A
(en)
*
1951-03-02
1954-11-23
United States Steel Corp
Apparatus for electroplating wire
NL286609A
(en)
*
1961-12-12
1967
1967-08-09
US
US659388A
patent/US3549507A/en
not_active
Expired – Lifetime
1968
1968-07-19
GB
GB34675/68A
patent/GB1249642A/en
not_active
Expired
1968-08-08
DE
DE19681764799
patent/DE1764799A1/en
active
Pending
1968-08-09
BE
BE719313D
patent/BE719313A/xx
unknown
1968-08-09
CH
CH1202368A
patent/CH507569A/en
not_active
IP Right Cessation
1968-08-09
NL
NL6811411A
patent/NL6811411A/xx
unknown
1968-08-09
FR
FR1604840D
patent/FR1604840A/fr
not_active
Expired
Also Published As
Publication number
Publication date
FR1604840A
(en)
1972-04-17
NL6811411A
(en)
1969-02-11
BE719313A
(en)
1969-01-16
DE1764799A1
(en)
1971-10-28
CH507569A
(en)
1971-05-15
US3549507A
(en)
1970-12-22
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None