JPS5528513A - Erasion magnetic head - Google Patents
Erasion magnetic headInfo
- Publication number
- JPS5528513A JPS5528513A JP9995678A JP9995678A JPS5528513A JP S5528513 A JPS5528513 A JP S5528513A JP 9995678 A JP9995678 A JP 9995678A JP 9995678 A JP9995678 A JP 9995678A JP S5528513 A JPS5528513 A JP S5528513A
- Authority
- JP
- Japan
- Prior art keywords
- core
- magnetic
- erasion
- width
- thickness
- 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
Abstract
PURPOSE: To secure a high erasion efficiency even to the high anti-magnetic tape by securing a higher magnetic saturation material for the front magnetic core than the rear magnetic core by decreasing the width of the front core at the front part and increasing the width at the junction part to the rear core respectively.
CONSTITUTION: Rear magnetic core 11 is composed with the ferrite and with erasion coil 3 wound. Front magnetic core 12 is made with the magnetic saturation material (Sendust, etc.) higher than core 11 and then given high magnetic flux density material bar 4 in order to double magnetic gap 5. Thickness D of core 11 is made larger enough then thickness d of core 12, and width B of core 11 is set larger than width A of core 12 respectively. And the junction surface is set for adhesion to be vertical and linear to the magnetic flux at junction part F between cores 11 and 12. As a result, the magnetic saturation of the magnetic core can be minimized along with a high erasion capacity and reduced temperature increment. Thus this erasion head can be suited especially for the cassette deck or the like.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9995678A JPS5528513A (en) | 1978-08-18 | 1978-08-18 | Erasion magnetic head |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9995678A JPS5528513A (en) | 1978-08-18 | 1978-08-18 | Erasion magnetic head |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5528513A true JPS5528513A (en) | 1980-02-29 |
Family
ID=14261135
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP9995678A Pending JPS5528513A (en) | 1978-08-18 | 1978-08-18 | Erasion magnetic head |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5528513A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59113769U (en) * | 1983-01-21 | 1984-08-01 | 日本アビオニクス株式会社 | absolute value circuit |
JPS60189152U (en) * | 1984-05-24 | 1985-12-14 | 東光株式会社 | Signal strength indicator drive circuit |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS49101009A (en) * | 1973-01-16 | 1974-09-25 |
-
1978
- 1978-08-18 JP JP9995678A patent/JPS5528513A/en active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS49101009A (en) * | 1973-01-16 | 1974-09-25 |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59113769U (en) * | 1983-01-21 | 1984-08-01 | 日本アビオニクス株式会社 | absolute value circuit |
JPS60189152U (en) * | 1984-05-24 | 1985-12-14 | 東光株式会社 | Signal strength indicator drive circuit |
JPH039404Y2 (en) * | 1984-05-24 | 1991-03-08 |
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