JPH0311001B2 - - Google Patents
Info
- Publication number
- JPH0311001B2 JPH0311001B2 JP5552581A JP5552581A JPH0311001B2 JP H0311001 B2 JPH0311001 B2 JP H0311001B2 JP 5552581 A JP5552581 A JP 5552581A JP 5552581 A JP5552581 A JP 5552581A JP H0311001 B2 JPH0311001 B2 JP H0311001B2
- Authority
- JP
- Japan
- Prior art keywords
- magnetic recording
- pole
- magnetic
- main
- recording medium
- 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.)
- Expired
Links
- 230000005415 magnetization Effects 0.000 claims description 21
- 230000005389 magnetism Effects 0.000 claims description 3
- 238000000034 method Methods 0.000 description 17
- 230000035699 permeability Effects 0.000 description 5
- 230000007423 decrease Effects 0.000 description 3
- 230000000903 blocking effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000696 magnetic material Substances 0.000 description 2
- 229910000889 permalloy Inorganic materials 0.000 description 2
- 238000009738 saturating Methods 0.000 description 2
- 230000000087 stabilizing effect Effects 0.000 description 2
- 239000010409 thin film Substances 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- -1 Sr Ferrite Inorganic materials 0.000 description 1
- 229910000828 alnico Inorganic materials 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 239000010408 film Substances 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000206 photolithography Methods 0.000 description 1
- 229920001721 polyimide Polymers 0.000 description 1
- 229910000938 samarium–cobalt magnet Inorganic materials 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 238000004544 sputter deposition Methods 0.000 description 1
- 229910000859 α-Fe Inorganic materials 0.000 description 1
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
- G11B5/1278—Structure or manufacture of heads, e.g. inductive specially adapted for magnetisations perpendicular to the surface of the record carrier
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Recording Or Reproducing By Magnetic Means (AREA)
- Magnetic Heads (AREA)
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5552581A JPS57172508A (en) | 1981-04-15 | 1981-04-15 | Vertical magnetic recorder |
| DE19823213928 DE3213928A1 (de) | 1981-04-15 | 1982-04-15 | Senkrecht - magnetkopf |
| US06/705,049 US4649449A (en) | 1981-04-15 | 1985-02-25 | Perpendicular magnetic head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5552581A JPS57172508A (en) | 1981-04-15 | 1981-04-15 | Vertical magnetic recorder |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS57172508A JPS57172508A (en) | 1982-10-23 |
| JPH0311001B2 true JPH0311001B2 (enrdf_load_stackoverflow) | 1991-02-15 |
Family
ID=13001126
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5552581A Granted JPS57172508A (en) | 1981-04-15 | 1981-04-15 | Vertical magnetic recorder |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS57172508A (enrdf_load_stackoverflow) |
-
1981
- 1981-04-15 JP JP5552581A patent/JPS57172508A/ja active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS57172508A (en) | 1982-10-23 |
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