JPS55122234A - Magnetic recording medium - Google Patents
Magnetic recording mediumInfo
- Publication number
- JPS55122234A JPS55122234A JP2688079A JP2688079A JPS55122234A JP S55122234 A JPS55122234 A JP S55122234A JP 2688079 A JP2688079 A JP 2688079A JP 2688079 A JP2688079 A JP 2688079A JP S55122234 A JPS55122234 A JP S55122234A
- Authority
- JP
- Japan
- Prior art keywords
- recording medium
- expression
- approximately
- magnetic recording
- binder
- 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
- Paints Or Removers (AREA)
- Magnetic Record Carriers (AREA)
Abstract
PURPOSE: To obtain a magnetic recording medium which is superior in surface and B-H characteristic and has a good-durability magnetic layer, by using a specific polyurethane resin as components of the binder of the magnetic layer which is formed by dispersing ferromagnetic minute powder.
CONSTITUTION: Polyurethane resin having the repeat unit indicated by expression I (m is 5W100; R is a bivalent radical introduced by the alicylic or aromatic compound including two or more hydroxyalkyl and hydroxyalkoxyl of C1WC4; R' is expression II, III, etc.,; R" is expressions IV, V, etc.,), for example, resin indicated by expression VI (molecular weight of approximately 200,000) is used as components of the binder. That is, the binder above of approximately 10W100wt.pt. is mixed into ferromagnetic powder of a 100wt.pt., and this material is applied onto a nonmagnetic support material to form a magnetic layer of a dried thickness of approximately 0.5W6μ, thus obtaining a magnetic recording medium.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2688079A JPS55122234A (en) | 1979-03-08 | 1979-03-08 | Magnetic recording medium |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2688079A JPS55122234A (en) | 1979-03-08 | 1979-03-08 | Magnetic recording medium |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS55122234A true JPS55122234A (en) | 1980-09-19 |
JPS6130324B2 JPS6130324B2 (en) | 1986-07-12 |
Family
ID=12205590
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2688079A Granted JPS55122234A (en) | 1979-03-08 | 1979-03-08 | Magnetic recording medium |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS55122234A (en) |
Cited By (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57158017A (en) * | 1981-03-20 | 1982-09-29 | Hitachi Maxell Ltd | Magnetic recording medium |
JPS598129A (en) * | 1982-07-06 | 1984-01-17 | Matsushita Electric Ind Co Ltd | Flexible magnetic disk |
JPS61915A (en) * | 1984-06-13 | 1986-01-06 | Konishiroku Photo Ind Co Ltd | Magnetic recording medium |
JPS619832A (en) * | 1984-06-25 | 1986-01-17 | Konishiroku Photo Ind Co Ltd | Magnetic recording medium |
JPS619827A (en) * | 1984-06-25 | 1986-01-17 | Konishiroku Photo Ind Co Ltd | Magnetic recording medium |
JPS619829A (en) * | 1984-06-25 | 1986-01-17 | Konishiroku Photo Ind Co Ltd | Magnetic recording medium |
JPS619826A (en) * | 1984-06-25 | 1986-01-17 | Konishiroku Photo Ind Co Ltd | Magnetic recording medium |
JPS619831A (en) * | 1984-06-25 | 1986-01-17 | Konishiroku Photo Ind Co Ltd | Magnetic recording medium |
JPS6117221A (en) * | 1984-06-25 | 1986-01-25 | Konishiroku Photo Ind Co Ltd | Magnetic recording medium |
JPS6120221A (en) * | 1984-07-06 | 1986-01-29 | Konishiroku Photo Ind Co Ltd | Magnetic recording medium |
JPS6134724A (en) * | 1984-07-25 | 1986-02-19 | Konishiroku Photo Ind Co Ltd | Magnetic recording medium |
JPS61204826A (en) * | 1985-03-07 | 1986-09-10 | Nippon Synthetic Chem Ind Co Ltd:The | Binder for magnetic recording medium |
JPS61214212A (en) * | 1985-03-20 | 1986-09-24 | Konishiroku Photo Ind Co Ltd | Magnetic recording medium |
JPS6292132A (en) * | 1985-10-18 | 1987-04-27 | Fuji Photo Film Co Ltd | Manufacture of magnetic recording medium |
JPS62246130A (en) * | 1986-04-18 | 1987-10-27 | Fuji Photo Film Co Ltd | Magnetic recording medium |
JPH04356724A (en) * | 1991-06-21 | 1992-12-10 | Konica Corp | Magnetic recording medium |
JP2010111934A (en) * | 2008-11-10 | 2010-05-20 | Kyoeisha Chem Co Ltd | Rust-preventive agent |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH052981Y2 (en) * | 1986-11-07 | 1993-01-25 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS505921A (en) * | 1973-05-21 | 1975-01-22 | ||
JPS516522A (en) * | 1974-07-05 | 1976-01-20 | Hitachi Ltd | TASOSHIKEIJIKI HETSUDO |
JPS54157603A (en) * | 1978-06-01 | 1979-12-12 | Toyo Boseki | Magnetic recording medium |
-
1979
- 1979-03-08 JP JP2688079A patent/JPS55122234A/en active Granted
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS505921A (en) * | 1973-05-21 | 1975-01-22 | ||
JPS516522A (en) * | 1974-07-05 | 1976-01-20 | Hitachi Ltd | TASOSHIKEIJIKI HETSUDO |
JPS54157603A (en) * | 1978-06-01 | 1979-12-12 | Toyo Boseki | Magnetic recording medium |
Cited By (27)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6126132B2 (en) * | 1981-03-20 | 1986-06-19 | Hitachi Maxell | |
JPS57158017A (en) * | 1981-03-20 | 1982-09-29 | Hitachi Maxell Ltd | Magnetic recording medium |
JPS598129A (en) * | 1982-07-06 | 1984-01-17 | Matsushita Electric Ind Co Ltd | Flexible magnetic disk |
JPH0456368B2 (en) * | 1982-07-06 | 1992-09-08 | Matsushita Electric Ind Co Ltd | |
JPS61915A (en) * | 1984-06-13 | 1986-01-06 | Konishiroku Photo Ind Co Ltd | Magnetic recording medium |
JPH0576694B2 (en) * | 1984-06-13 | 1993-10-25 | Konishiroku Photo Ind | |
JPS619827A (en) * | 1984-06-25 | 1986-01-17 | Konishiroku Photo Ind Co Ltd | Magnetic recording medium |
JPS619831A (en) * | 1984-06-25 | 1986-01-17 | Konishiroku Photo Ind Co Ltd | Magnetic recording medium |
JPS6117221A (en) * | 1984-06-25 | 1986-01-25 | Konishiroku Photo Ind Co Ltd | Magnetic recording medium |
JPS619826A (en) * | 1984-06-25 | 1986-01-17 | Konishiroku Photo Ind Co Ltd | Magnetic recording medium |
JPS619829A (en) * | 1984-06-25 | 1986-01-17 | Konishiroku Photo Ind Co Ltd | Magnetic recording medium |
JPH0576690B2 (en) * | 1984-06-25 | 1993-10-25 | Konishiroku Photo Ind | |
JPH0576688B2 (en) * | 1984-06-25 | 1993-10-25 | Konishiroku Photo Ind | |
JPS619832A (en) * | 1984-06-25 | 1986-01-17 | Konishiroku Photo Ind Co Ltd | Magnetic recording medium |
JPH0576692B2 (en) * | 1984-06-25 | 1993-10-25 | Konishiroku Photo Ind | |
JPH0576691B2 (en) * | 1984-06-25 | 1993-10-25 | Konishiroku Photo Ind | |
JPS6120221A (en) * | 1984-07-06 | 1986-01-29 | Konishiroku Photo Ind Co Ltd | Magnetic recording medium |
JPH0576693B2 (en) * | 1984-07-06 | 1993-10-25 | Konishiroku Photo Ind | |
JPS6134724A (en) * | 1984-07-25 | 1986-02-19 | Konishiroku Photo Ind Co Ltd | Magnetic recording medium |
JPS61204826A (en) * | 1985-03-07 | 1986-09-10 | Nippon Synthetic Chem Ind Co Ltd:The | Binder for magnetic recording medium |
JPH0677304B2 (en) * | 1985-03-07 | 1994-09-28 | 日本合成化学工業株式会社 | Binder for magnetic recording medium |
JPS61214212A (en) * | 1985-03-20 | 1986-09-24 | Konishiroku Photo Ind Co Ltd | Magnetic recording medium |
JPH0559490B2 (en) * | 1985-10-18 | 1993-08-31 | Fuji Photo Film Co Ltd | |
JPS6292132A (en) * | 1985-10-18 | 1987-04-27 | Fuji Photo Film Co Ltd | Manufacture of magnetic recording medium |
JPS62246130A (en) * | 1986-04-18 | 1987-10-27 | Fuji Photo Film Co Ltd | Magnetic recording medium |
JPH04356724A (en) * | 1991-06-21 | 1992-12-10 | Konica Corp | Magnetic recording medium |
JP2010111934A (en) * | 2008-11-10 | 2010-05-20 | Kyoeisha Chem Co Ltd | Rust-preventive agent |
Also Published As
Publication number | Publication date |
---|---|
JPS6130324B2 (en) | 1986-07-12 |
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