JPS5449104A - Magnetic head and magnetic tape apparatus - Google Patents
Magnetic head and magnetic tape apparatusInfo
- Publication number
- JPS5449104A JPS5449104A JP11630777A JP11630777A JPS5449104A JP S5449104 A JPS5449104 A JP S5449104A JP 11630777 A JP11630777 A JP 11630777A JP 11630777 A JP11630777 A JP 11630777A JP S5449104 A JPS5449104 A JP S5449104A
- Authority
- JP
- Japan
- Prior art keywords
- pressure
- air holes
- magnetic head
- magnetic
- detection signal
- 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
- Adjustment Of The Magnetic Head Position Track Following On Tapes (AREA)
Abstract
PURPOSE: To make possible measurement of head abrasion loss automatically by opening air holes in the portions near the read and write gaps of the magnetic head where traveling medium does not contact and supplying pressure or vacuum pressure therethrough.
CONSTITUTION: A read gap 2, a write gap 3 and air holes 4 near the gaps are provided to the magnetic head body 1, and further a pressure source or vacuum sorce 6, a pressure detector 5, pressure detection signal 7 and a changeover vlave 8 are provided to the magnetic tape apparatus. Hence, when the contact portions wear down, the spacing between the air holes 4 and running medium become increasingly narrow and the back pressure being exerted to the air holes changes. The change thereof is detected with detector 5 and the detection signal 7 is sent out. From this signal, displaying of the abrasion loss and the accurate judgement of exchange time by abrasion may be performed
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11630777A JPS5449104A (en) | 1977-09-27 | 1977-09-27 | Magnetic head and magnetic tape apparatus |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11630777A JPS5449104A (en) | 1977-09-27 | 1977-09-27 | Magnetic head and magnetic tape apparatus |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5449104A true JPS5449104A (en) | 1979-04-18 |
Family
ID=14683761
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP11630777A Pending JPS5449104A (en) | 1977-09-27 | 1977-09-27 | Magnetic head and magnetic tape apparatus |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5449104A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4479158A (en) * | 1982-05-12 | 1984-10-23 | International Business Machines Corporation | Stationary magnetic head with a fluid operated tape lifter |
US5574606A (en) * | 1989-02-28 | 1996-11-12 | Canon Denshi Kabushiki Kaisha | Magnetic head having dust handling tape slide surface |
-
1977
- 1977-09-27 JP JP11630777A patent/JPS5449104A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4479158A (en) * | 1982-05-12 | 1984-10-23 | International Business Machines Corporation | Stationary magnetic head with a fluid operated tape lifter |
US5574606A (en) * | 1989-02-28 | 1996-11-12 | Canon Denshi Kabushiki Kaisha | Magnetic head having dust handling tape slide surface |
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