GB1324335A – Magnetic head for a tape recorder
– Google Patents
GB1324335A – Magnetic head for a tape recorder
– Google Patents
Magnetic head for a tape recorder
Info
Publication number
GB1324335A
GB1324335A
GB4367770A
GB4367770A
GB1324335A
GB 1324335 A
GB1324335 A
GB 1324335A
GB 4367770 A
GB4367770 A
GB 4367770A
GB 4367770 A
GB4367770 A
GB 4367770A
GB 1324335 A
GB1324335 A
GB 1324335A
Authority
GB
United Kingdom
Prior art keywords
section
sept
dec
magnetic head
tape recorder
Prior art date
1969-09-12
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
GB4367770A
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.)
Akai Electric Co Ltd
Original Assignee
Akai Electric Co Ltd
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.)
1969-09-12
Filing date
1970-09-11
Publication date
1973-07-25
1969-12-04
Priority claimed from JP11536869U
external-priority
patent/JPS4939290Y1/ja
1969-12-22
Priority claimed from JP12169269U
external-priority
patent/JPS5121717Y1/ja
1970-02-06
Priority claimed from JP1200570U
external-priority
patent/JPS506343Y1/ja
1970-09-11
Application filed by Akai Electric Co Ltd
filed
Critical
Akai Electric Co Ltd
1973-07-25
Publication of GB1324335A
publication
Critical
patent/GB1324335A/en
Status
Expired
legal-status
Critical
Current
Links
Espacenet
Global Dossier
Discuss
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
G11B5/127—Structure or manufacture of heads, e.g. inductive
G11B5/29—Structure or manufacture of unitary devices formed of plural heads for more than one track
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
G11B5/10—Structure or manufacture of housings or shields for heads
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
G11B5/127—Structure or manufacture of heads, e.g. inductive
G11B5/187—Structure or manufacture of the surface of the head in physical contact with, or immediately adjacent to the recording medium; Pole pieces; Gap features
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
G11B5/127—Structure or manufacture of heads, e.g. inductive
G11B5/187—Structure or manufacture of the surface of the head in physical contact with, or immediately adjacent to the recording medium; Pole pieces; Gap features
G11B5/255—Structure or manufacture of the surface of the head in physical contact with, or immediately adjacent to the recording medium; Pole pieces; Gap features comprising means for protection against wear
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
Y10T29/00—Metal working
Y10T29/49—Method of mechanical manufacture
Y10T29/49002—Electrical device making
Y10T29/4902—Electromagnet, transformer or inductor
Y10T29/49021—Magnetic recording reproducing transducer [e.g., tape head, core, etc.]
Y10T29/49032—Fabricating head structure or component thereof
Y10T29/49055—Fabricating head structure or component thereof with bond/laminating preformed parts, at least two magnetic
Abstract
1324335 Magnetic heads AKAI ELECTRIC CO Ltd 11 Sept 1970 [12 Sept 1969 29 Oct 1969 3 Nov 1969 4 Dec 1969 22 Dec 1969 6 Feb 1970] 43677/70 Heading G5R A magnetic tape head has pairs of polepieces 8a, 9a with an intervening screen 10a and wearresistant members 21, 22 all in a front section 5 attachable to a rear section 6 containing U- shaped yokes 8b, 9b. Further wear-resistant members 23-26 of transparent glass or plastics allow use of interference fringe techniques during lapping and aligning. The section 5 is stuck to a Be-Cu frame 7 screwed adjustably to the rear section 6 to facilitate adjustment of the magnetic characteristics. The section 6 includes a screen continuation 10b, and the completed head is potted in a screening can.
GB4367770A
1969-09-12
1970-09-11
Magnetic head for a tape recorder
Expired
GB1324335A
(en)
Applications Claiming Priority (6)
Application Number
Priority Date
Filing Date
Title
JP8666769
1969-09-12
JP10276569
1969-10-29
JP8785469
1969-11-03
JP11536869U
JPS4939290Y1
(en)
1969-12-04
1969-12-04
JP12169269U
JPS5121717Y1
(en)
1969-12-22
1969-12-22
JP1200570U
JPS506343Y1
(en)
1970-02-06
1970-02-06
Publications (1)
Publication Number
Publication Date
GB1324335A
true
GB1324335A
(en)
1973-07-25
Family
ID=27548378
Family Applications (1)
Application Number
Title
Priority Date
Filing Date
GB4367770A
Expired
GB1324335A
(en)
1969-09-12
1970-09-11
Magnetic head for a tape recorder
Country Status (5)
Country
Link
US
(1)
US3686466A
(en)
BE
(1)
BE756020A
(en)
DE
(1)
DE2044997A1
(en)
GB
(1)
GB1324335A
(en)
NL
(1)
NL162226C
(en)
Families Citing this family (4)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
US4052594A
(en)
*
1976-03-29
1977-10-04
Bourns, Inc.
Mark reader with improved mark sensing heads
US4291354A
(en)
*
1979-06-04
1981-09-22
Ampex Corporation
Extended life multichannel magnetic transducer
FR2606920B1
(en)
*
1986-11-18
1991-11-29
Europ Composants Electron
MAGNETIC HEAD FOR MAGNETIC TRACKS WITH HIGH COERCITIVE FIELD AND MANUFACTURING METHOD
US6639753B1
(en)
*
2000-09-01
2003-10-28
Hewlett-Packard Development Company, L.P.
Method of forming a head assembly, a head assembly, and a linear tape drive
Family Cites Families (5)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
US2908770A
(en)
*
1956-04-30
1959-10-13
Rca Corp
Magnetic recording-reproducing
US3145452A
(en)
*
1958-03-24
1964-08-25
Iit Res Inst
Method of making a magnetic head
US3249700A
(en)
*
1960-09-27
1966-05-03
Philips Corp
Magnetic heads with means for preventing side erosion
US3562442A
(en)
*
1968-10-04
1971-02-09
Potter Instrument Co Inc
Multi-track magnetic recording heads and method of construction therefor
US3551609A
(en)
*
1969-02-10
1970-12-29
Burroughs Corp
Magnetic recording head with interlocking «v» bars
0
BE
BE756020D
patent/BE756020A/en
not_active
IP Right Cessation
1970
1970-09-02
NL
NL7012958.A
patent/NL162226C/en
not_active
IP Right Cessation
1970-09-09
US
US70631A
patent/US3686466A/en
not_active
Expired – Lifetime
1970-09-11
GB
GB4367770A
patent/GB1324335A/en
not_active
Expired
1970-09-11
DE
DE19702044997
patent/DE2044997A1/en
active
Pending
Also Published As
Publication number
Publication date
NL162226B
(en)
1979-11-15
US3686466A
(en)
1972-08-22
BE756020A
(en)
1971-02-15
DE2044997A1
(en)
1971-05-19
NL162226C
(en)
1979-11-15
NL7012958A
(en)
1971-03-16
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Legal Events
Date
Code
Title
Description
1973-12-05
PS
Patent sealed [section 19, patents act 1949]
1977-09-14
435
Patent endorsed ‘licences of right’ on the date specified (sect. 35/1949)
1986-05-08
PCNP
Patent ceased through non-payment of renewal fee
