JPS55142408A - Magnetic head - Google Patents
Magnetic headInfo
- Publication number
- JPS55142408A JPS55142408A JP4897679A JP4897679A JPS55142408A JP S55142408 A JPS55142408 A JP S55142408A JP 4897679 A JP4897679 A JP 4897679A JP 4897679 A JP4897679 A JP 4897679A JP S55142408 A JPS55142408 A JP S55142408A
- Authority
- JP
- Japan
- Prior art keywords
- magnetic
- grooves
- gap
- core
- eddy current
- 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
Landscapes
- Magnetic Heads (AREA)
Abstract
PURPOSE: To give the magnetic gap of high reliability and lamination effect to the magnetic head, by providing one or a plurality of grooves or cavities with the part excluding the vicinity of the magnetic gap of the magnetic substance core constituting the magnetic circuit.
CONSTITUTION: The grooves 8a, 8b are cut off on the two magnetic substance cores 6a, 6b from the head sides 7a, 7b respectively. The part near the magnetic gap 2 of the cores 6a, 6b is kept the same as bulk core. Thus, the gap forming technique such as the sputtering or metal deposition having high reliability can be used. On the other hand, the surface area is increased for the other part with the grooves 8a, 8b. Since the path of magnetic flux due to eddy current loss is limited around the core surface, this increase in the surface area means the increase in the effective cross sectional area through which magnetic flux can flow, allowing to avoid the eddy current loss at high frequencies and heat dissipation due to it, resulting in increasing the recording and reproducing efficiency.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4897679A JPS55142408A (en) | 1979-04-23 | 1979-04-23 | Magnetic head |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4897679A JPS55142408A (en) | 1979-04-23 | 1979-04-23 | Magnetic head |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS55142408A true JPS55142408A (en) | 1980-11-07 |
Family
ID=12818282
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP4897679A Pending JPS55142408A (en) | 1979-04-23 | 1979-04-23 | Magnetic head |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS55142408A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0224342A2 (en) * | 1985-11-14 | 1987-06-03 | Mitsubishi Denki Kabushiki Kaisha | A magnetic head for recording and playback |
-
1979
- 1979-04-23 JP JP4897679A patent/JPS55142408A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0224342A2 (en) * | 1985-11-14 | 1987-06-03 | Mitsubishi Denki Kabushiki Kaisha | A magnetic head for recording and playback |
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