JPS56111120A - Manufacture for thin film magnetic head - Google Patents
Manufacture for thin film magnetic headInfo
- Publication number
- JPS56111120A JPS56111120A JP1010080A JP1010080A JPS56111120A JP S56111120 A JPS56111120 A JP S56111120A JP 1010080 A JP1010080 A JP 1010080A JP 1010080 A JP1010080 A JP 1010080A JP S56111120 A JPS56111120 A JP S56111120A
- Authority
- JP
- Japan
- Prior art keywords
- hole
- gap
- depth
- thin film
- layer
- 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
- G11B5/3163—Fabrication methods or processes specially adapted for a particular head structure, e.g. using base layers for electroplating, using functional layers for masking, using energy or particle beams for shaping the structure or modifying the properties of the basic layers
- G11B5/3166—Testing or indicating in relation thereto, e.g. before the fabrication is completed
Landscapes
- Magnetic Heads (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
Abstract
PURPOSE:To obtain accurate depth of gap, by providing a polishing mark specifying the depth of gap with the 2nd nonmagnetic substance layer with a through-hole, on the formation of the 1st magnetic substance layer of thin film magnetic head on the substrate. CONSTITUTION:In forming a composite body with a thin film magnetic head H and a polish mark M on a substrate 1, after forming the 1st magnetic substance 2, the 1st nonmagnetic substance layer 3 being the gap is formed and the 2nd nonmagnetic substance layer 5 is formed. Then, a through-hole b2 is provided and a magnetic substance body 6 covering the hole b2 and the layer 5 is formed. The rear edge a2 of the hole b2 of the mark M is made in coincidence with the polish end position Xe. The position Xe is apart from the position a1 specifying the depth of the Ld by a given gap depth Ld. Since the hole b2 can be formed with the gap forming hole b1, no position shift is made to the position a1 and the ridge a2. Further, on the way of polishment, since the observation can be made if the magnetic substance layer 6 of the through-hole b2 is visible at the position Xe at the end of polishment and at the position of X1 or if the layer 5 is visible with the hole b2 polished, accurate depth of gap Ld can be obtained.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1010080A JPS56111120A (en) | 1980-02-01 | 1980-02-01 | Manufacture for thin film magnetic head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1010080A JPS56111120A (en) | 1980-02-01 | 1980-02-01 | Manufacture for thin film magnetic head |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS56111120A true JPS56111120A (en) | 1981-09-02 |
Family
ID=11740894
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1010080A Pending JPS56111120A (en) | 1980-02-01 | 1980-02-01 | Manufacture for thin film magnetic head |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS56111120A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63253514A (en) * | 1987-04-10 | 1988-10-20 | Canon Electronics Inc | Manufacture of thin-film magnetic head |
| US5305559A (en) * | 1992-05-12 | 1994-04-26 | Ngk Insulators, Ltd. | Method of grinding core blank for magnetic heads, using markers for determining grinding depth for nominal magnetic gap depth |
-
1980
- 1980-02-01 JP JP1010080A patent/JPS56111120A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63253514A (en) * | 1987-04-10 | 1988-10-20 | Canon Electronics Inc | Manufacture of thin-film magnetic head |
| US5305559A (en) * | 1992-05-12 | 1994-04-26 | Ngk Insulators, Ltd. | Method of grinding core blank for magnetic heads, using markers for determining grinding depth for nominal magnetic gap depth |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPS54114223A (en) | Production of floating type thin film magnetic head | |
| JPS56111120A (en) | Manufacture for thin film magnetic head | |
| JPS5629832A (en) | Manufacture for thin film magnetic head | |
| JPS57189321A (en) | Manufacture of thin film magnetic head | |
| JPS56145517A (en) | Thin-film magnetic head | |
| JPS551673A (en) | Manufacture for magnetic head | |
| JPS578919A (en) | Manufacture of magnetic recording body | |
| JPS5774812A (en) | Manufacture of magnetic head for vertical magnetic recording | |
| JPS5687217A (en) | Vertical magnetization type magnetic head and its manufacture | |
| JPS6476414A (en) | Thin film magnetic head | |
| EP0152064A3 (en) | Thin film magnetic head and manufacturing method thereof | |
| JPS57141010A (en) | Production for magnetic head | |
| JPS6484406A (en) | Manufacture of thin film magnetic head | |
| JPS5573913A (en) | Magnetic head | |
| JPS57113410A (en) | Thin-film head | |
| JPS57167135A (en) | Magnetic disc | |
| JPS578986A (en) | Manufacture of magnetic bubble element | |
| JPS5718011A (en) | Production of ring-shaped magnetic head | |
| JPS57141011A (en) | Thin film magnetic head and its production | |
| JPS5587322A (en) | Manufacture of thin film magnetic head | |
| JPS55117724A (en) | Magnetic head | |
| JPS5766521A (en) | Thin-film magnetic head and its manufacture | |
| JPS57150120A (en) | Thin film magnetic head and its manufacture | |
| JPS6476511A (en) | Manufacture of thin film magnetic head | |
| JPS5676586A (en) | Hall element substrate for hall head |