JPS54118214A - Production of thin film magnetic head - Google Patents

Production of thin film magnetic head

Info

Publication number
JPS54118214A
JPS54118214A JP2488778A JP2488778A JPS54118214A JP S54118214 A JPS54118214 A JP S54118214A JP 2488778 A JP2488778 A JP 2488778A JP 2488778 A JP2488778 A JP 2488778A JP S54118214 A JPS54118214 A JP S54118214A
Authority
JP
Japan
Prior art keywords
substrate
layer
magnetic
magnetic head
film 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.)
Granted
Application number
JP2488778A
Other languages
Japanese (ja)
Other versions
JPS5857809B2 (en
Inventor
Noboru Nomura
Kenji Kanai
Nobuyuki Kaminaka
Kidai Nochi
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 JP2488778A priority Critical patent/JPS5857809B2/en
Priority to US06/017,536 priority patent/US4241367A/en
Publication of JPS54118214A publication Critical patent/JPS54118214A/en
Publication of JPS5857809B2 publication Critical patent/JPS5857809B2/en
Expired legal-status Critical Current

Links

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  • Magnetic Heads (AREA)

Abstract

PURPOSE: To obtain a multichannel thin-film magnetic head of less variations among channels by using the substrate comprising annealing a ferromagnetic material substrate to form an electrically even surface on the substrate surface then forming gooves through etching.
CONSTITUTION: A ferromagnetic material substrate is polished to mirror surfaces and this is then annealed in a reductive or neutral atmosphere to form a layer of even specific resistance on the substrate surface. Next, a resist mask 2 is formed on the abovementioned substrate 1 (101) and the substrate is etched with an electrolytic etching solution, after which the resist film 2 is removed and a non-magnetic insulation type material (109) such as glass of an equal coefficient of thermal expansion to that of the substrate is filled in the grooves 13 thus formed. The surface is then polished flat. Next, a biasing coil 104 and a coil 103 for signals composed of a non-magnetic conductor are provided so as to position on the non- magnetic insulation material layer 109 of the abovementioned substrate 101, following to which an insulator layer 105, magnetic material layer 102, protecting layer 111, etc. are laminated and formed to complete the thin-film magnetic head.
COPYRIGHT: (C)1979,JPO&Japio
JP2488778A 1978-03-03 1978-03-03 Manufacturing method of thin film magnetic head Expired JPS5857809B2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP2488778A JPS5857809B2 (en) 1978-03-03 1978-03-03 Manufacturing method of thin film magnetic head
US06/017,536 US4241367A (en) 1978-03-03 1979-03-05 Thin film magnetic head

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2488778A JPS5857809B2 (en) 1978-03-03 1978-03-03 Manufacturing method of thin film magnetic head

Publications (2)

Publication Number Publication Date
JPS54118214A true JPS54118214A (en) 1979-09-13
JPS5857809B2 JPS5857809B2 (en) 1983-12-22

Family

ID=12150689

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2488778A Expired JPS5857809B2 (en) 1978-03-03 1978-03-03 Manufacturing method of thin film magnetic head

Country Status (1)

Country Link
JP (1) JPS5857809B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6194211A (en) * 1984-10-16 1986-05-13 Sanyo Electric Co Ltd Thin film magnetic head
JPS61153806A (en) * 1984-12-26 1986-07-12 Matsushita Electric Ind Co Ltd Magnetic head for vertical magnetization

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6424307U (en) * 1987-08-04 1989-02-09

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6194211A (en) * 1984-10-16 1986-05-13 Sanyo Electric Co Ltd Thin film magnetic head
JPH0618055B2 (en) * 1984-10-16 1994-03-09 三洋電機株式会社 Thin film magnetic head
JPS61153806A (en) * 1984-12-26 1986-07-12 Matsushita Electric Ind Co Ltd Magnetic head for vertical magnetization

Also Published As

Publication number Publication date
JPS5857809B2 (en) 1983-12-22

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