JPS6466813A - Thin film head - Google Patents

Thin film head

Info

Publication number
JPS6466813A
JPS6466813A JP22366187A JP22366187A JPS6466813A JP S6466813 A JPS6466813 A JP S6466813A JP 22366187 A JP22366187 A JP 22366187A JP 22366187 A JP22366187 A JP 22366187A JP S6466813 A JPS6466813 A JP S6466813A
Authority
JP
Japan
Prior art keywords
magnetic substance
layers
substance layer
coil
lower magnetic
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.)
Pending
Application number
JP22366187A
Other languages
Japanese (ja)
Inventor
Hirotaka Okita
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.)
Brother Industries Ltd
Original Assignee
Brother 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 Brother Industries Ltd filed Critical Brother Industries Ltd
Priority to JP22366187A priority Critical patent/JPS6466813A/en
Publication of JPS6466813A publication Critical patent/JPS6466813A/en
Pending 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
    • G11B5/31—Structure or manufacture of heads, e.g. inductive using thin films
    • G11B5/3109—Details
    • G11B5/313—Disposition of layers
    • G11B5/3143—Disposition of layers including additional layers for improving the electromagnetic transducing properties of the basic structure, e.g. for flux coupling, guiding or shielding

Abstract

PURPOSE:To realize a high reproduced output without lowering a frequency characteristic by connecting magnetically the central magnetic substance layer part of a core, which is the magnetic substance layer with a susceptibility higher than an upper land a lower magnetic substance layers, to the upper and the lower magnetic substance layers. CONSTITUTION:As the material of the upper and the lower magnetic substance layers 2, 3, the material with a high high-frequency magnetic permeability characteristic such as Fe19-Ni81 alloy, etc., for instance, is used. A coil 1 is wound into a spiral shape, and one of its ends is led to an external part through a lead wire 7. The central magnetic substance layer part 4, located at the center part of the spiral of the coil 1 or the vicinity of it, is constituted of the magnetic substance with the higher susceptibility than the upper and the lower magnetic substance layers 2, 3, such as, for instance, Fe30-Ni70 alloy, etc. The central magnetic substance layer part 4 is connected magnetically to the upper and the lower magnetic substance layers 2, 3. Thus, since the central magnetic substance layer 4 is high in the susceptibility, a flux density comes to be large, and the magnetic flux passing through the coil 1 comes to increase, and the reproduced output is increased as well.
JP22366187A 1987-09-07 1987-09-07 Thin film head Pending JPS6466813A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP22366187A JPS6466813A (en) 1987-09-07 1987-09-07 Thin film head

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP22366187A JPS6466813A (en) 1987-09-07 1987-09-07 Thin film head

Publications (1)

Publication Number Publication Date
JPS6466813A true JPS6466813A (en) 1989-03-13

Family

ID=16801668

Family Applications (1)

Application Number Title Priority Date Filing Date
JP22366187A Pending JPS6466813A (en) 1987-09-07 1987-09-07 Thin film head

Country Status (1)

Country Link
JP (1) JPS6466813A (en)

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