GB993843A - Improvements in or relating to multitrack magnetic transducing heads - Google Patents

Improvements in or relating to multitrack magnetic transducing heads

Info

Publication number
GB993843A
GB993843A GB3945460A GB3945460A GB993843A GB 993843 A GB993843 A GB 993843A GB 3945460 A GB3945460 A GB 3945460A GB 3945460 A GB3945460 A GB 3945460A GB 993843 A GB993843 A GB 993843A
Authority
GB
United Kingdom
Prior art keywords
nov
relating
turn primary
playback
magnetic transducing
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
GB3945460A
Inventor
Donald Peter Franklin
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.)
EMI Ltd
Electrical and Musical Industries Ltd
Original Assignee
EMI Ltd
Electrical and Musical Industries 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.)
Filing date
Publication date
Application filed by EMI Ltd, Electrical and Musical Industries Ltd filed Critical EMI Ltd
Priority to GB3945460A priority Critical patent/GB993843A/en
Publication of GB993843A publication Critical patent/GB993843A/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
    • G11B5/127—Structure or manufacture of heads, e.g. inductive
    • G11B5/17—Construction or disposition of windings
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Magnetic Heads (AREA)

Abstract

993,843. Transformers. ELECTRIC & MUSICAL INDUSTRIES Ltd. Nov. 17, 1961 [Nov. 17, 1960], No. 39454/60. Heading H1T. [Also in Division G5] In a magnetic record/playback head, a gapless ferrite ring 4 completes the magnetic circuit between a pair of metallic polepieces 1 and at the same time acts as the core of a transformer. A single-turn primary (in the playback sense) winding 6 is wedge-shaped to fit closely up to the transducing gap 2 to reduce inward leakage flux. The secondary 8 is toroidally wound about the remaining available core perimeter and the assembly is locked in a holder 3 by resilient pads 9. In another embodiment (not detailed) the single-turn primary may be replaced by a plurality of single turns, mutually insulated one from another.
GB3945460A 1960-11-17 1960-11-17 Improvements in or relating to multitrack magnetic transducing heads Expired GB993843A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3945460A GB993843A (en) 1960-11-17 1960-11-17 Improvements in or relating to multitrack magnetic transducing heads

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3945460A GB993843A (en) 1960-11-17 1960-11-17 Improvements in or relating to multitrack magnetic transducing heads

Publications (1)

Publication Number Publication Date
GB993843A true GB993843A (en) 1965-06-02

Family

ID=10409634

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3945460A Expired GB993843A (en) 1960-11-17 1960-11-17 Improvements in or relating to multitrack magnetic transducing heads

Country Status (1)

Country Link
GB (1) GB993843A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2510290A1 (en) * 1981-07-27 1983-01-28 Hitachi Ltd THIN-FILM MAGNETIC HEAD AND METHOD OF MANUFACTURING SUCH MAGNETIC HEAD
EP0076969A1 (en) * 1981-10-08 1983-04-20 Kabushiki Kaisha Toshiba Perpendicular magnetic recording head
EP0559431A1 (en) * 1992-03-04 1993-09-08 Ampex Systems Corporation Small core metal head transducer and manufacturing method therefor

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2510290A1 (en) * 1981-07-27 1983-01-28 Hitachi Ltd THIN-FILM MAGNETIC HEAD AND METHOD OF MANUFACTURING SUCH MAGNETIC HEAD
EP0076969A1 (en) * 1981-10-08 1983-04-20 Kabushiki Kaisha Toshiba Perpendicular magnetic recording head
EP0559431A1 (en) * 1992-03-04 1993-09-08 Ampex Systems Corporation Small core metal head transducer and manufacturing method therefor

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