JPS54118214A - Production of thin film magnetic head - Google Patents
Production of thin film magnetic headInfo
- 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
Links
Landscapes
- 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
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)
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)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6424307U (en) * | 1987-08-04 | 1989-02-09 |
-
1978
- 1978-03-03 JP JP2488778A patent/JPS5857809B2/en not_active Expired
Cited By (3)
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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