JPS5487517A - Erase magnetic head - Google Patents

Erase magnetic head

Info

Publication number
JPS5487517A
JPS5487517A JP15577577A JP15577577A JPS5487517A JP S5487517 A JPS5487517 A JP S5487517A JP 15577577 A JP15577577 A JP 15577577A JP 15577577 A JP15577577 A JP 15577577A JP S5487517 A JPS5487517 A JP S5487517A
Authority
JP
Japan
Prior art keywords
medium
erase
magnetic head
point
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
JP15577577A
Other languages
Japanese (ja)
Inventor
Satoshi Kunii
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP15577577A priority Critical patent/JPS5487517A/en
Publication of JPS5487517A publication Critical patent/JPS5487517A/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
    • G11B5/187—Structure or manufacture of the surface of the head in physical contact with, or immediately adjacent to the recording medium; Pole pieces; Gap features

Landscapes

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

Abstract

PURPOSE:To enable erasing of good efficiency to be performed without increasing the frequency of erase current by improving the construction of the magnetic pole for the erase magnetic head used for tape recorders, etc. CONSTITUTION:Not only in the opposing gap 2 where a pair of magnetic poles 11, 12 of a core 1 composed of magnetic material opposes with each other but also in the spacing 21 created by notching the operating part 14 where the magnteic pole 12 positioned in the moving direction of a recording medium 5 slides with the medium 5 to a round shape is filled a substance of high abrasion resistance such as glass in the similar manner as for the spacing 2. When high frequency erase current is flowed inthe coil 3 of such erase magnetic head 4, one point on the medium 5 is put in the magentic field gradually decreasing with time along with the movement thereof and the recording magnetization point remained on the medium 5 finally reaches the point of a minute residual magnetization state.
JP15577577A 1977-12-23 1977-12-23 Erase magnetic head Pending JPS5487517A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15577577A JPS5487517A (en) 1977-12-23 1977-12-23 Erase magnetic head

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15577577A JPS5487517A (en) 1977-12-23 1977-12-23 Erase magnetic head

Publications (1)

Publication Number Publication Date
JPS5487517A true JPS5487517A (en) 1979-07-12

Family

ID=15613125

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15577577A Pending JPS5487517A (en) 1977-12-23 1977-12-23 Erase magnetic head

Country Status (1)

Country Link
JP (1) JPS5487517A (en)

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