JPS55113120A - Erasing magnetic head - Google Patents
Erasing magnetic headInfo
- Publication number
- JPS55113120A JPS55113120A JP1920779A JP1920779A JPS55113120A JP S55113120 A JPS55113120 A JP S55113120A JP 1920779 A JP1920779 A JP 1920779A JP 1920779 A JP1920779 A JP 1920779A JP S55113120 A JPS55113120 A JP S55113120A
- Authority
- JP
- Japan
- Prior art keywords
- front surface
- contact
- pad
- gap
- magnetic head
- 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 erasure neither by using any pad nor by increasing tension of a magnetic tape, by slanting the front surface of an erasing magnetic head formed in an arc shape from a gap circumference toward its outside by a certain angle to the center tangent of the front surface.
CONSTITUTION: A region where magnetic tape 4 running as shown by arrow A comes in contact with contact surface 1a of magnetic head 1 is expressed by L. Its front surface is formed being slanted from a point constant interval (e) away from gap 2 toward is outside by angle θ to center tangent (m) of front surface 1a of head 1. The figure shows the relation among distance (l) between gaps 2 and 3, contact surface L of contact surface 1a and contact pressure P1, and great contact pressure can be obtained. Contact pressure to the front surface on the gap-3 side is similarly increased. Thus, a device with restriction on the arrangement of a pad, etc., in terms of the erasing head of a cassette tape recorder, etc., brings stable erasure to effect without using any pad.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1920779A JPS55113120A (en) | 1979-02-20 | 1979-02-20 | Erasing magnetic head |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1920779A JPS55113120A (en) | 1979-02-20 | 1979-02-20 | Erasing magnetic head |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS55113120A true JPS55113120A (en) | 1980-09-01 |
Family
ID=11992914
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1920779A Pending JPS55113120A (en) | 1979-02-20 | 1979-02-20 | Erasing magnetic head |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS55113120A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58153220A (en) * | 1982-03-08 | 1983-09-12 | Hitachi Ltd | Magnetic head and its manufacture |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS52100218A (en) * | 1976-02-19 | 1977-08-23 | Alps Electric Co Ltd | Method of producing magnetic head |
JPS5377514A (en) * | 1976-12-20 | 1978-07-10 | Sanyo Electric Co Ltd | Manfacture of magnetic head |
-
1979
- 1979-02-20 JP JP1920779A patent/JPS55113120A/en active Pending
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS52100218A (en) * | 1976-02-19 | 1977-08-23 | Alps Electric Co Ltd | Method of producing magnetic head |
JPS5377514A (en) * | 1976-12-20 | 1978-07-10 | Sanyo Electric Co Ltd | Manfacture of magnetic head |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58153220A (en) * | 1982-03-08 | 1983-09-12 | Hitachi Ltd | Magnetic head and its manufacture |
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