JPS57191821A - Compound magnetic head - Google Patents

Compound magnetic head

Info

Publication number
JPS57191821A
JPS57191821A JP7739081A JP7739081A JPS57191821A JP S57191821 A JPS57191821 A JP S57191821A JP 7739081 A JP7739081 A JP 7739081A JP 7739081 A JP7739081 A JP 7739081A JP S57191821 A JPS57191821 A JP S57191821A
Authority
JP
Japan
Prior art keywords
melting point
point glass
low
grooves
auxiliary core
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
JP7739081A
Other languages
Japanese (ja)
Inventor
Jiro Torio
Hiroshi Yamamoto
Akihiro Watanabe
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 JP7739081A priority Critical patent/JPS57191821A/en
Publication of JPS57191821A publication Critical patent/JPS57191821A/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
    • G11B5/1871—Shaping or contouring of the transducing or guiding surface

Landscapes

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

Abstract

PURPOSE:To improve the efficiency of high frequency reproduction by using an auxiliary core, whose magnetic tape contact surface is made of low-melting point glass, for a compound head. CONSTITUTION:Blocklike auxiliary core half bodies 12a and 12b are made into a welded block body 50 by welding the welding parts 24a and 24b with high- melting point glass. In the welded block body 50, grooves 52 are formed at equal pitch in such a way that bottom surfaces 51 and contact surfaces 13 of magnetic heads are nearly the same, and low-melting point glass is molded in the grooves 52. Excessive glass in the grooves 52 are removed, cut parts 53 are cut, and then work such as thickness polishing is carried out, thereby obtaining an auxiliary core 12. Since the hardness of the low-melting point glass part 42 of the auxiliary core 12 is lower than that of a main core 11 made of sendust, the low-melting point glass part 42 shinks in contacting with a magnetic tape and the main core 11 is elevated to hold the excellent cntact with the magnetic tape at a gap 23, thus improving short-wavelength characteristics.
JP7739081A 1981-05-20 1981-05-20 Compound magnetic head Pending JPS57191821A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7739081A JPS57191821A (en) 1981-05-20 1981-05-20 Compound magnetic head

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7739081A JPS57191821A (en) 1981-05-20 1981-05-20 Compound magnetic head

Publications (1)

Publication Number Publication Date
JPS57191821A true JPS57191821A (en) 1982-11-25

Family

ID=13632557

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7739081A Pending JPS57191821A (en) 1981-05-20 1981-05-20 Compound magnetic head

Country Status (1)

Country Link
JP (1) JPS57191821A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4602307A (en) * 1983-03-11 1986-07-22 Mitsubishi Denki Kabushiki Kaisha Compound type magnetic head
FR2576702A1 (en) * 1985-01-30 1986-08-01 Pioneer Electronic Corp Magnetic head and method for its production
JPS61188711A (en) * 1985-02-16 1986-08-22 Hitachi Maxell Ltd Magnetic head

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4602307A (en) * 1983-03-11 1986-07-22 Mitsubishi Denki Kabushiki Kaisha Compound type magnetic head
FR2576702A1 (en) * 1985-01-30 1986-08-01 Pioneer Electronic Corp Magnetic head and method for its production
JPS61188711A (en) * 1985-02-16 1986-08-22 Hitachi Maxell Ltd Magnetic head

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