JPS53116115A - Magnetic recording medium - Google Patents
Magnetic recording mediumInfo
- Publication number
- JPS53116115A JPS53116115A JP3092177A JP3092177A JPS53116115A JP S53116115 A JPS53116115 A JP S53116115A JP 3092177 A JP3092177 A JP 3092177A JP 3092177 A JP3092177 A JP 3092177A JP S53116115 A JPS53116115 A JP S53116115A
- Authority
- JP
- Japan
- Prior art keywords
- recording medium
- magnetic recording
- backing
- protruded
- particles
- 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.)
- Granted
Links
Landscapes
- Magnetic Record Carriers (AREA)
Abstract
PURPOSE: To make magnetic characteristics for video better as compared to the film backing wherein inorganic fine-particles are protruded on the surface, by providing a magnetic thin film layer on the backing having specific crease-form protrusions composed of crystalline high polymer on the surface.
COPYRIGHT: (C)1978,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP52030921A JPS5840250B2 (en) | 1977-03-18 | 1977-03-18 | magnetic recording medium |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP52030921A JPS5840250B2 (en) | 1977-03-18 | 1977-03-18 | magnetic recording medium |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP11499884A Division JPS60101727A (en) | 1984-06-04 | 1984-06-04 | Production of magnetic recording medium |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS53116115A true JPS53116115A (en) | 1978-10-11 |
JPS5840250B2 JPS5840250B2 (en) | 1983-09-05 |
Family
ID=12317145
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP52030921A Expired JPS5840250B2 (en) | 1977-03-18 | 1977-03-18 | magnetic recording medium |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5840250B2 (en) |
Cited By (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS573830A (en) * | 1980-06-10 | 1982-01-09 | Matsushita Electric Ind Co Ltd | Vacuum metallizing method |
JPS5792434A (en) * | 1980-11-28 | 1982-06-09 | Matsushita Electric Ind Co Ltd | Manufacture of magnetic recording medium |
JPS57167121A (en) * | 1981-04-03 | 1982-10-14 | Hitachi Maxell Ltd | Magnetic recording medium |
JPS57167122A (en) * | 1981-04-03 | 1982-10-14 | Hitachi Maxell Ltd | Magnetic recording medium |
JPS589214A (en) * | 1981-07-07 | 1983-01-19 | Matsushita Electric Ind Co Ltd | Magnetic recording medium |
JPS6085416A (en) * | 1983-10-14 | 1985-05-14 | Matsushita Electric Ind Co Ltd | Magnetic recording medium |
US4578729A (en) * | 1981-10-15 | 1986-03-25 | Matsushita Electric Industrial Co., Ltd. | Magnetic recording medium |
US4645703A (en) * | 1982-11-19 | 1987-02-24 | Matsushita Electric Industrial Co., Ltd. | Magnetic recording medium |
US4734810A (en) * | 1984-08-02 | 1988-03-29 | Tdk Corporation | Magnetic recording medium comprising protrusion on its surface and a plasma treated substrate and recording/reproducing method therefor |
US4780354A (en) * | 1986-02-05 | 1988-10-25 | Tdk Corporation | Magnetic recording medium |
JPS6476422A (en) * | 1987-09-16 | 1989-03-22 | Fuji Electric Co Ltd | Magnetic disk |
US4828899A (en) * | 1984-08-02 | 1989-05-09 | Tdk Corporation | Magnetic recording medium and recording/reproducing method thereof |
US4837116A (en) * | 1984-08-03 | 1989-06-06 | Tdk Corporation | Magnetic recording medium and recording/reproducing method therefor |
JPH03113823A (en) * | 1989-09-26 | 1991-05-15 | Itochu Shoji Kk | Recording disk substrate and its production |
JPH03119517A (en) * | 1989-10-02 | 1991-05-21 | Itochu Shoji Kk | Recording disk substrate and its production |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4850703A (en) * | 1971-10-27 | 1973-07-17 | ||
JPS5416723A (en) * | 1977-07-08 | 1979-02-07 | Hitachi Ltd | Solenoid valve |
-
1977
- 1977-03-18 JP JP52030921A patent/JPS5840250B2/en not_active Expired
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4850703A (en) * | 1971-10-27 | 1973-07-17 | ||
JPS5416723A (en) * | 1977-07-08 | 1979-02-07 | Hitachi Ltd | Solenoid valve |
Cited By (20)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS573830A (en) * | 1980-06-10 | 1982-01-09 | Matsushita Electric Ind Co Ltd | Vacuum metallizing method |
JPS6046181B2 (en) * | 1980-06-10 | 1985-10-15 | 松下電器産業株式会社 | Vacuum deposition method |
JPS5792434A (en) * | 1980-11-28 | 1982-06-09 | Matsushita Electric Ind Co Ltd | Manufacture of magnetic recording medium |
JPS6038769B2 (en) * | 1980-11-28 | 1985-09-03 | 松下電器産業株式会社 | Method for manufacturing magnetic recording media |
JPH0315250B2 (en) * | 1981-04-03 | 1991-02-28 | Hitachi Maxell | |
JPS57167121A (en) * | 1981-04-03 | 1982-10-14 | Hitachi Maxell Ltd | Magnetic recording medium |
JPS57167122A (en) * | 1981-04-03 | 1982-10-14 | Hitachi Maxell Ltd | Magnetic recording medium |
JPH0315249B2 (en) * | 1981-04-03 | 1991-02-28 | Hitachi Maxell | |
JPS589214A (en) * | 1981-07-07 | 1983-01-19 | Matsushita Electric Ind Co Ltd | Magnetic recording medium |
JPH0551962B2 (en) * | 1981-07-07 | 1993-08-04 | Toray Industries | |
US4578729A (en) * | 1981-10-15 | 1986-03-25 | Matsushita Electric Industrial Co., Ltd. | Magnetic recording medium |
US4645703A (en) * | 1982-11-19 | 1987-02-24 | Matsushita Electric Industrial Co., Ltd. | Magnetic recording medium |
JPS6085416A (en) * | 1983-10-14 | 1985-05-14 | Matsushita Electric Ind Co Ltd | Magnetic recording medium |
US4828899A (en) * | 1984-08-02 | 1989-05-09 | Tdk Corporation | Magnetic recording medium and recording/reproducing method thereof |
US4734810A (en) * | 1984-08-02 | 1988-03-29 | Tdk Corporation | Magnetic recording medium comprising protrusion on its surface and a plasma treated substrate and recording/reproducing method therefor |
US4837116A (en) * | 1984-08-03 | 1989-06-06 | Tdk Corporation | Magnetic recording medium and recording/reproducing method therefor |
US4780354A (en) * | 1986-02-05 | 1988-10-25 | Tdk Corporation | Magnetic recording medium |
JPS6476422A (en) * | 1987-09-16 | 1989-03-22 | Fuji Electric Co Ltd | Magnetic disk |
JPH03113823A (en) * | 1989-09-26 | 1991-05-15 | Itochu Shoji Kk | Recording disk substrate and its production |
JPH03119517A (en) * | 1989-10-02 | 1991-05-21 | Itochu Shoji Kk | Recording disk substrate and its production |
Also Published As
Publication number | Publication date |
---|---|
JPS5840250B2 (en) | 1983-09-05 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JPS527204A (en) | Magnetic recording medium manufacturing method | |
JPS53116115A (en) | Magnetic recording medium | |
JPS53143206A (en) | Magnetic disc | |
JPS53123906A (en) | Magnetic disc | |
JPS5250203A (en) | Magnetic transfer recording material | |
JPS53107314A (en) | Magnetic recording medium | |
JPS5321903A (en) | Preparation of magnetic disc substrate | |
JPS5340506A (en) | Magnetic recording medium | |
JPS5342707A (en) | Magnetic recording medium | |
JPS53119017A (en) | Capacity conversion type information recording medium | |
JPS5378807A (en) | Magnetic recorder and preparation thereof | |
JPS51149006A (en) | High density magnetic recording tape sheet | |
JPS5321910A (en) | Magnetic reading apparatus | |
JPS53145602A (en) | Recording medium | |
JPS5421307A (en) | Magnetic recording medium and production of the same | |
JPS53104206A (en) | Manufacture of magnetic recording medium | |
JPS5233713A (en) | Thin film magnetic head | |
JPS528807A (en) | Magnetic recording medium | |
JPS52112306A (en) | Magnetic recording tape | |
JPS527710A (en) | Double recorder | |
JPS5224514A (en) | Thin film magnetic head | |
JPS5419712A (en) | Magnetic recording medium | |
JPS5361305A (en) | Film composition for magnetic recording media | |
JPS5363018A (en) | Electrostatic recording material | |
JPS5368211A (en) | Magnetic recording tape |