JPS54155011A - Magnetic recording medium - Google Patents
Magnetic recording mediumInfo
- Publication number
- JPS54155011A JPS54155011A JP6367778A JP6367778A JPS54155011A JP S54155011 A JPS54155011 A JP S54155011A JP 6367778 A JP6367778 A JP 6367778A JP 6367778 A JP6367778 A JP 6367778A JP S54155011 A JPS54155011 A JP S54155011A
- Authority
- JP
- Japan
- Prior art keywords
- magnetic recording
- thermal contraction
- recording medium
- contraction ratio
- showing
- 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
- Compositions Of Macromolecular Compounds (AREA)
- Magnetic Record Carriers (AREA)
- Thin Magnetic Films (AREA)
Abstract
PURPOSE: To keep the magnetic recording property of a magnetic recording medium good and prevent the medium from curling, by making a thin magnetic metal film on a plastic film whose thermal contraction ratio is prescribed both in the longitudinal direction and in the cross direction.
CONSTITUTION: The thin magnetic metal film is produced on the plastic film, whose thermal contraction ratio in the longitudinal direction is 2.0 to 7.5% under the treatment at a temperature of 150°C for 30 minutes as standardized in JIS C-2318 and is limited within the hatched area defined by the line A showing the five times of the thermal contraction ratio in the cross direction and the line B showing the one and a half times of the ratio in Fig.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6367778A JPS54155011A (en) | 1978-05-27 | 1978-05-27 | Magnetic recording medium |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6367778A JPS54155011A (en) | 1978-05-27 | 1978-05-27 | Magnetic recording medium |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS54155011A true JPS54155011A (en) | 1979-12-06 |
Family
ID=13236221
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP6367778A Pending JPS54155011A (en) | 1978-05-27 | 1978-05-27 | Magnetic recording medium |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS54155011A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5945327A (en) * | 1982-09-09 | 1984-03-14 | Teijin Ltd | Polyethylene terephthalate film for metallic thin film magnetic recording medium |
JPS63107088A (en) * | 1986-06-30 | 1988-05-12 | 東洋メタライジング株式会社 | Manufacture of copper-plated film |
JPH08132523A (en) * | 1994-11-09 | 1996-05-28 | Toray Ind Inc | Low heat-shrinkable polyester film |
JPH08164558A (en) * | 1994-12-15 | 1996-06-25 | Toray Ind Inc | Polyester film |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4865256A (en) * | 1971-12-13 | 1973-09-08 | ||
JPS4952254A (en) * | 1972-09-19 | 1974-05-21 | ||
JPS5340506A (en) * | 1976-09-24 | 1978-04-13 | Matsushita Electric Ind Co Ltd | Magnetic recording medium |
-
1978
- 1978-05-27 JP JP6367778A patent/JPS54155011A/en active Pending
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4865256A (en) * | 1971-12-13 | 1973-09-08 | ||
JPS4952254A (en) * | 1972-09-19 | 1974-05-21 | ||
JPS5340506A (en) * | 1976-09-24 | 1978-04-13 | Matsushita Electric Ind Co Ltd | Magnetic recording medium |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5945327A (en) * | 1982-09-09 | 1984-03-14 | Teijin Ltd | Polyethylene terephthalate film for metallic thin film magnetic recording medium |
JPH0218220B2 (en) * | 1982-09-09 | 1990-04-24 | Teijin Ltd | |
JPS63107088A (en) * | 1986-06-30 | 1988-05-12 | 東洋メタライジング株式会社 | Manufacture of copper-plated film |
JPH08132523A (en) * | 1994-11-09 | 1996-05-28 | Toray Ind Inc | Low heat-shrinkable polyester film |
JPH08164558A (en) * | 1994-12-15 | 1996-06-25 | Toray Ind Inc | Polyester film |
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