JPS57191825A - Manufacture of magnetic head - Google Patents

Manufacture of magnetic head

Info

Publication number
JPS57191825A
JPS57191825A JP7721881A JP7721881A JPS57191825A JP S57191825 A JPS57191825 A JP S57191825A JP 7721881 A JP7721881 A JP 7721881A JP 7721881 A JP7721881 A JP 7721881A JP S57191825 A JPS57191825 A JP S57191825A
Authority
JP
Japan
Prior art keywords
grooves
mask
formation surface
track width
gap formation
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.)
Granted
Application number
JP7721881A
Other languages
Japanese (ja)
Other versions
JPH0416841B2 (en
Inventor
Hiroshi Yoda
Takeshi Takahashi
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 JP7721881A priority Critical patent/JPS57191825A/en
Priority to US06/310,114 priority patent/US4425701A/en
Publication of JPS57191825A publication Critical patent/JPS57191825A/en
Publication of JPH0416841B2 publication Critical patent/JPH0416841B2/ja
Granted 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
    • G11B5/1272—Assembling or shaping of elements
    • 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
    • G11B5/133—Structure or manufacture of heads, e.g. inductive with cores composed of particles, e.g. with dust cores, with ferrite cores with cores composed of isolated magnetic particles
    • 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 machining precision and the coating precision of a resist mask by forming track width regulating grooves after molding nonmagnetic materials in grooves formed in a plate of a ferromagnetic material at intervals wider than track width. CONSTITUTION:In the gap formation surface of a core plate 2 made of a ferromagnetic material, grooves 3 are formed at intervals wider than track width and after nonmagnetic materials are molded in those grooves 3, the surface is polished into a specular surface. On this gap formation surface, a photoresist mask 7 is formed and electrolytic etching is performed by using said mask 4 to form track-width regulating grooves 5. After the mask 4 is removed, a winding groove 1 is formed in the gap formation surface and glass for gap-length regulation is provided by sputtering and cut into block cores 6 and 6', which are heated and bonded to opposite blocks.
JP7721881A 1980-10-17 1981-05-20 Manufacture of magnetic head Granted JPS57191825A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP7721881A JPS57191825A (en) 1981-05-20 1981-05-20 Manufacture of magnetic head
US06/310,114 US4425701A (en) 1980-10-17 1981-10-09 Methods of making magnetic recording heads

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7721881A JPS57191825A (en) 1981-05-20 1981-05-20 Manufacture of magnetic head

Publications (2)

Publication Number Publication Date
JPS57191825A true JPS57191825A (en) 1982-11-25
JPH0416841B2 JPH0416841B2 (en) 1992-03-25

Family

ID=13627703

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7721881A Granted JPS57191825A (en) 1980-10-17 1981-05-20 Manufacture of magnetic head

Country Status (1)

Country Link
JP (1) JPS57191825A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPWO2022191330A1 (en) 2021-03-12 2022-09-15

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54103334A (en) * 1978-01-31 1979-08-14 Sanyo Electric Co Ltd Effective track width specifying method of magnetic head
JPS5572226U (en) * 1978-11-07 1980-05-19

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54103334A (en) * 1978-01-31 1979-08-14 Sanyo Electric Co Ltd Effective track width specifying method of magnetic head
JPS5572226U (en) * 1978-11-07 1980-05-19

Also Published As

Publication number Publication date
JPH0416841B2 (en) 1992-03-25

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