JPH0416841B2 - - Google Patents

Info

Publication number
JPH0416841B2
JPH0416841B2 JP56077218A JP7721881A JPH0416841B2 JP H0416841 B2 JPH0416841 B2 JP H0416841B2 JP 56077218 A JP56077218 A JP 56077218A JP 7721881 A JP7721881 A JP 7721881A JP H0416841 B2 JPH0416841 B2 JP H0416841B2
Authority
JP
Japan
Prior art keywords
etching
glass
track width
groove
grooves
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.)
Expired - Lifetime
Application number
JP56077218A
Other languages
English (en)
Japanese (ja)
Other versions
JPS57191825A (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/ja
Priority to US06/310,114 priority patent/US4425701A/en
Publication of JPS57191825A publication Critical patent/JPS57191825A/ja
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)
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 JPS57191825A (en) 1982-11-25
JPH0416841B2 true JPH0416841B2 (enrdf_load_html_response) 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 (enrdf_load_html_response)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022191330A1 (ja) 2021-03-12 2022-09-15 株式会社アルチザンラボ 止血材

Family Cites Families (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
JPS632986Y2 (enrdf_load_html_response) * 1978-11-07 1988-01-25

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022191330A1 (ja) 2021-03-12 2022-09-15 株式会社アルチザンラボ 止血材

Also Published As

Publication number Publication date
JPS57191825A (en) 1982-11-25

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