JPS56169220A - Magnetic recording medium - Google Patents
Magnetic recording mediumInfo
- Publication number
- JPS56169220A JPS56169220A JP7231580A JP7231580A JPS56169220A JP S56169220 A JPS56169220 A JP S56169220A JP 7231580 A JP7231580 A JP 7231580A JP 7231580 A JP7231580 A JP 7231580A JP S56169220 A JPS56169220 A JP S56169220A
- Authority
- JP
- Japan
- Prior art keywords
- recording medium
- magnetic substance
- sides
- film base
- magnetic recording
- 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
- 239000000126 substance Substances 0.000 abstract 5
- 230000005415 magnetization Effects 0.000 abstract 2
- 230000015572 biosynthetic process Effects 0.000 abstract 1
- 230000005611 electricity Effects 0.000 abstract 1
- 229920000642 polymer Polymers 0.000 abstract 1
- 238000004544 sputter deposition Methods 0.000 abstract 1
- 230000003068 static effect Effects 0.000 abstract 1
- 238000001771 vacuum deposition Methods 0.000 abstract 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
- G11B5/62—Record carriers characterised by the selection of the material
- G11B5/64—Record carriers characterised by the selection of the material comprising only the magnetic material without bonding agent
- G11B5/66—Record carriers characterised by the selection of the material comprising only the magnetic material without bonding agent the record carriers consisting of several layers
Abstract
PURPOSE:To obtain a magnetic recording medium which can prevent curl specific to a metallic tape and to improve recording efficiency, by forming a magnetic substance layer, on which data is recorded by vertical magnetization, on both sides of a base. CONSTITUTION:On both sides of a film base 3, magnetic substance layers 4a and 4b on which data is recorded by vertical magnetization are formed to nearly the same extent by vacuum-deposition, high-frequency sputtering, etc. Thus obtained magnetic recording medium has less curl and the increased thickness of the magnetic substance because of the formation of the magnetic substance layers 4a and 4b on both the sides of the film base 3. Further, sticking conductive substances both on front and rear surfaces of the film base prevents the generation of static electricity even when a tape runs slidingly. Therefore, a pulsating electrostatic noise is not generated in reproduction unlike a conventional recording medium made of high polymer base films with rear surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7231580A JPS56169220A (en) | 1980-05-29 | 1980-05-29 | Magnetic recording medium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7231580A JPS56169220A (en) | 1980-05-29 | 1980-05-29 | Magnetic recording medium |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS56169220A true JPS56169220A (en) | 1981-12-25 |
Family
ID=13485713
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7231580A Pending JPS56169220A (en) | 1980-05-29 | 1980-05-29 | Magnetic recording medium |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS56169220A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4801481A (en) * | 1982-06-25 | 1989-01-31 | Tokyo Shibaura Denki Kabushiki Kaisha | Perpendicular magnetic recording floppy disk |
| US4868070A (en) * | 1984-11-29 | 1989-09-19 | Fuji Photo Film Co., Ltd. | Vertical magnetization type recording medium and manufacturing method therefor |
-
1980
- 1980-05-29 JP JP7231580A patent/JPS56169220A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4801481A (en) * | 1982-06-25 | 1989-01-31 | Tokyo Shibaura Denki Kabushiki Kaisha | Perpendicular magnetic recording floppy disk |
| US4868070A (en) * | 1984-11-29 | 1989-09-19 | Fuji Photo Film Co., Ltd. | Vertical magnetization type recording medium and manufacturing method therefor |
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