JPS55101131A - Production of magnetic head - Google Patents

Production of magnetic head

Info

Publication number
JPS55101131A
JPS55101131A JP775779A JP775779A JPS55101131A JP S55101131 A JPS55101131 A JP S55101131A JP 775779 A JP775779 A JP 775779A JP 775779 A JP775779 A JP 775779A JP S55101131 A JPS55101131 A JP S55101131A
Authority
JP
Japan
Prior art keywords
head
magnetic head
magnetic
window
etching
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
JP775779A
Other languages
Japanese (ja)
Inventor
Yoshiaki Kobayashi
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial 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.)
Filing date
Publication date
Application filed by Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP775779A priority Critical patent/JPS55101131A/en
Publication of JPS55101131A publication Critical patent/JPS55101131A/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
    • G11B5/10—Structure or manufacture of housings or shields for heads
    • G11B5/11—Shielding of head against electric or magnetic fields
    • G11B5/112—Manufacture of shielding device

Landscapes

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

Abstract

PURPOSE:To control directivity of a magnetic head to produce the head which is difficult to receive external induction noise, by removing the window of a head shield case by etching while measuring the induction noise voltage of the assembled magnetic head arranged between parallel magnetic fields. CONSTITUTION:Resistor liquid is applied to an assembled magnetic head as shown by oblique lines while leaving the part around one side of window 1a of shield case 1 (the side near head gap 3) with the same width as width W of window 1a as it is. Next, the magnetic head H above is arranged in etching liquid 7 of vessel that magnetic field 8 from magnetic field generator 9 may agree with the front vertical direction of head H, and the magnetic head is etched while detecting the output of magnetic head H by amplifier 10 and vacuum tube voltmeter 11; and when the induction voltage from head H becomes zero, the magnetic head is lifted to stop etching, thus producing the magnetic which is difficult to receive external induction noise.
JP775779A 1979-01-25 1979-01-25 Production of magnetic head Pending JPS55101131A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP775779A JPS55101131A (en) 1979-01-25 1979-01-25 Production of magnetic head

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP775779A JPS55101131A (en) 1979-01-25 1979-01-25 Production of magnetic head

Publications (1)

Publication Number Publication Date
JPS55101131A true JPS55101131A (en) 1980-08-01

Family

ID=11674561

Family Applications (1)

Application Number Title Priority Date Filing Date
JP775779A Pending JPS55101131A (en) 1979-01-25 1979-01-25 Production of magnetic head

Country Status (1)

Country Link
JP (1) JPS55101131A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0220804U (en) * 1988-07-21 1990-02-13

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0220804U (en) * 1988-07-21 1990-02-13

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