JPS5312740A - Liquid for electrolytically etching ferrite - Google Patents

Liquid for electrolytically etching ferrite

Info

Publication number
JPS5312740A
JPS5312740A JP8859076A JP8859076A JPS5312740A JP S5312740 A JPS5312740 A JP S5312740A JP 8859076 A JP8859076 A JP 8859076A JP 8859076 A JP8859076 A JP 8859076A JP S5312740 A JPS5312740 A JP S5312740A
Authority
JP
Japan
Prior art keywords
ferrite
liquid
electrolytically etching
electrolytically
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.)
Granted
Application number
JP8859076A
Other languages
Japanese (ja)
Other versions
JPS5440381B2 (en
Inventor
Tatsuo Kikuchi
Kenichi Fujimura
Heigo Hirohata
Tetsuo Hino
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 JP8859076A priority Critical patent/JPS5312740A/en
Priority to DE19772733304 priority patent/DE2733304C2/en
Priority to FR7722660A priority patent/FR2359195A1/en
Publication of JPS5312740A publication Critical patent/JPS5312740A/en
Priority to US05/923,403 priority patent/US4169026A/en
Publication of JPS5440381B2 publication Critical patent/JPS5440381B2/ja
Granted legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25F—PROCESSES FOR THE ELECTROLYTIC REMOVAL OF MATERIALS FROM OBJECTS; APPARATUS THEREFOR
    • C25F3/00—Electrolytic etching or polishing
    • C25F3/02—Etching
    • 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
    • G11B5/1335—Assembling or shaping of elements
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
    • H01F1/01—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials
    • H01F1/03—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity
    • H01F1/12—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials
    • H01F1/34—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials non-metallic substances, e.g. ferrites
JP8859076A 1976-07-23 1976-07-23 Liquid for electrolytically etching ferrite Granted JPS5312740A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP8859076A JPS5312740A (en) 1976-07-23 1976-07-23 Liquid for electrolytically etching ferrite
DE19772733304 DE2733304C2 (en) 1976-07-23 1977-07-21 Method of manufacturing a magnetic head from two ferrite blocks
FR7722660A FR2359195A1 (en) 1976-07-23 1977-07-22 Etchant for etching magnetic head ferrite electrolytically - based on sulphuric acid and water for smooth deep etching
US05/923,403 US4169026A (en) 1976-07-23 1978-07-10 Etchant for electrolytic etching of a ferrite for a magnetic head and method of producing a magnetic head

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8859076A JPS5312740A (en) 1976-07-23 1976-07-23 Liquid for electrolytically etching ferrite

Publications (2)

Publication Number Publication Date
JPS5312740A true JPS5312740A (en) 1978-02-04
JPS5440381B2 JPS5440381B2 (en) 1979-12-03

Family

ID=13947039

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8859076A Granted JPS5312740A (en) 1976-07-23 1976-07-23 Liquid for electrolytically etching ferrite

Country Status (3)

Country Link
JP (1) JPS5312740A (en)
DE (1) DE2733304C2 (en)
FR (1) FR2359195A1 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6047725B2 (en) * 1977-06-14 1985-10-23 ソニー株式会社 Ferrite processing method
JPS59207415A (en) * 1983-05-11 1984-11-24 Hitachi Ltd Compound magnetic head and its preparation
DE3319437C2 (en) * 1983-05-28 1985-04-04 Grundig E.M.V. Elektro-Mechanische Versuchsanstalt Max Grundig holländ. Stiftung & Co KG, 8510 Fürth Magnetic head and process for its manufacture
SE9101469D0 (en) * 1991-05-15 1991-05-15 Sandvik Ab ETSMETOD
SE511209C2 (en) * 1994-12-12 1999-08-23 Sandvik Ab Method for obtaining well-defined oak gradients on inserts with electropolishing technology

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3479738A (en) * 1967-05-23 1969-11-25 Rca Corp Magnetic heads

Also Published As

Publication number Publication date
JPS5440381B2 (en) 1979-12-03
DE2733304A1 (en) 1978-01-26
FR2359195A1 (en) 1978-02-17
FR2359195B1 (en) 1981-03-06
DE2733304C2 (en) 1984-12-20

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