JPS57189321A - Manufacture of thin film magnetic head - Google Patents
Manufacture of thin film magnetic headInfo
- Publication number
- JPS57189321A JPS57189321A JP7339081A JP7339081A JPS57189321A JP S57189321 A JPS57189321 A JP S57189321A JP 7339081 A JP7339081 A JP 7339081A JP 7339081 A JP7339081 A JP 7339081A JP S57189321 A JPS57189321 A JP S57189321A
- Authority
- JP
- Japan
- Prior art keywords
- layer
- magnetic head
- recess
- magnetic layer
- thin film
- 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.)
- Pending
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
- G11B5/31—Structure or manufacture of heads, e.g. inductive using thin films
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Magnetic Heads (AREA)
Abstract
PURPOSE:To obtain a magnetic head which is exact in its shape and wide in a space between the upper and lower magnetic layers, and to elevate its recording and reproducing efficiency, by forming the lower magnetic layer after providing a recess on a nonmagnetic material. CONSTITUTION:On a substrate 1, a nonmagnetic film 9 is formed, a recess is provided on this film, a lower magnetic layer 2 is patterned, and after that, is covered with a lower insulating layer 3, is polished until the layer 2 is exposed in the back yoke part, a coil 4 is provided on the layer 3, and is covered with an upper insulating layer 5. On this layer, an upper magnetic layer 6 is formed. For instance, when depth of the recess is set to 6mum, a space of the magnetic layer can be widened to 10mum, and also, a step difference in case of forming the upper magnetic layer is only 4mum. The shape of this thin film magnetic head is much more satisfactory in its pattern accuracy than the case of a high step difference of 10mum by a conventional method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7339081A JPS57189321A (en) | 1981-05-18 | 1981-05-18 | Manufacture of thin film magnetic head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7339081A JPS57189321A (en) | 1981-05-18 | 1981-05-18 | Manufacture of thin film magnetic head |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS57189321A true JPS57189321A (en) | 1982-11-20 |
Family
ID=13516813
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7339081A Pending JPS57189321A (en) | 1981-05-18 | 1981-05-18 | Manufacture of thin film magnetic head |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS57189321A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63152008A (en) * | 1986-12-16 | 1988-06-24 | Alps Electric Co Ltd | Thin film magnetic head and its production |
| EP0376459A2 (en) * | 1988-12-30 | 1990-07-04 | Quantum Corporation | Recording heads with side shields |
| EP0404332A2 (en) * | 1989-06-22 | 1990-12-27 | Quantum Corporation | Three-pole magnetic head with reduced flux leakage |
| JPH04111211A (en) * | 1990-08-31 | 1992-04-13 | Nec Ibaraki Ltd | Thin-film magnetic head |
| JPH0546930A (en) * | 1991-08-12 | 1993-02-26 | Alps Electric Co Ltd | Thin film magnetic head |
-
1981
- 1981-05-18 JP JP7339081A patent/JPS57189321A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63152008A (en) * | 1986-12-16 | 1988-06-24 | Alps Electric Co Ltd | Thin film magnetic head and its production |
| EP0376459A2 (en) * | 1988-12-30 | 1990-07-04 | Quantum Corporation | Recording heads with side shields |
| EP0404332A2 (en) * | 1989-06-22 | 1990-12-27 | Quantum Corporation | Three-pole magnetic head with reduced flux leakage |
| JPH04111211A (en) * | 1990-08-31 | 1992-04-13 | Nec Ibaraki Ltd | Thin-film magnetic head |
| JPH0546930A (en) * | 1991-08-12 | 1993-02-26 | Alps Electric Co Ltd | Thin film magnetic head |
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