JPS5683841A - Base film for magnetic recording - Google Patents
Base film for magnetic recordingInfo
- Publication number
- JPS5683841A JPS5683841A JP16052879A JP16052879A JPS5683841A JP S5683841 A JPS5683841 A JP S5683841A JP 16052879 A JP16052879 A JP 16052879A JP 16052879 A JP16052879 A JP 16052879A JP S5683841 A JPS5683841 A JP S5683841A
- Authority
- JP
- Japan
- Prior art keywords
- mixed
- magnetic
- light shield
- polyester film
- 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.)
- Granted
Links
Landscapes
- Laminated Bodies (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Magnetic Record Carriers (AREA)
Abstract
PURPOSE: To make it possible to apply the magnetic material uniformly and thinly and prevent the occurrence of erroneous optical signals, by laminating the polyester film, where no light shield material is mixed, on one face or both faces of the polyester film where the light shield material is mixed.
CONSTITUTION: Polyester film A where no light shield material is mixed and TiO2 is mixed or not mixed is laminated on one face or both faces of polyester film B where the light shield material such as carbon black is mixed. The magnetic material is applied to this laminated base film for magnetic recording to form a magnetic recording tape or card. The magnetic signal is recorded on this magnetic layer, and the optical signal is recorded on the tape or card by punching small holes. Thus, even if exfoliation and scratches are generated in the magnetic layer due to repeated use, erroneous signals can be prevented from being given to the optical signal detecting part. Since it is possible that the magnetic layer is thin and the magnetic material is minute, high-output and high-density magnetic recording can be obtained.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16052879A JPS5683841A (en) | 1979-12-11 | 1979-12-11 | Base film for magnetic recording |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16052879A JPS5683841A (en) | 1979-12-11 | 1979-12-11 | Base film for magnetic recording |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP20861887A Division JPS63220421A (en) | 1987-08-21 | 1987-08-21 | Base film for magnetic card |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5683841A true JPS5683841A (en) | 1981-07-08 |
JPH0226286B2 JPH0226286B2 (en) | 1990-06-08 |
Family
ID=15716906
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP16052879A Granted JPS5683841A (en) | 1979-12-11 | 1979-12-11 | Base film for magnetic recording |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5683841A (en) |
Cited By (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57205824A (en) * | 1981-06-11 | 1982-12-17 | Teijin Ltd | Magnetic recording medium |
US4546036A (en) * | 1983-12-22 | 1985-10-08 | Minnesota Mining And Manufacturing Company | Magnetic recording medium having opaque polyester film base |
JPS60254415A (en) * | 1984-04-16 | 1985-12-16 | ヘキスト アクチエンゲゼルシヤフト | Multilayer biaxially stretched support sheet for informationsupport by magnetism and manufacture thereof |
US4603073A (en) * | 1983-12-22 | 1986-07-29 | Minnesota Mining And Manufacturing Company | Opaque polyester film containing fine carbon black particles |
JPS62143938A (en) * | 1985-12-17 | 1987-06-27 | Diafoil Co Ltd | Polyethylene-2,6-naphthalate film for high-density magnetic recording medium |
JPS638937U (en) * | 1986-07-04 | 1988-01-21 | ||
JPS63149830A (en) * | 1986-12-12 | 1988-06-22 | Dainippon Printing Co Ltd | Multi-layered film for information memory card |
JPH01105740A (en) * | 1987-10-19 | 1989-04-24 | Diafoil Co Ltd | Polyester multilayer film for prepaid card |
JPH0382537A (en) * | 1989-08-28 | 1991-04-08 | Toray Ind Inc | Composite polyester film |
JPH0382536A (en) * | 1989-08-28 | 1991-04-08 | Toray Ind Inc | Composite polyester film |
JPH0382535A (en) * | 1989-08-28 | 1991-04-08 | Toray Ind Inc | Composite polyester film |
JPH0382534A (en) * | 1989-08-28 | 1991-04-08 | Toray Ind Inc | Composite polyester film |
JP2009061780A (en) * | 1996-08-14 | 2009-03-26 | Dupont Teijin Films Us Lp | Polyester film |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5093103A (en) * | 1973-12-19 | 1975-07-25 | ||
JPS51147408U (en) * | 1975-05-20 | 1976-11-26 | ||
JPS52206U (en) * | 1975-06-20 | 1977-01-05 | ||
JPS5256902A (en) * | 1975-11-06 | 1977-05-10 | Sony Corp | Production of magnetic recording medium |
JPS5331112A (en) * | 1976-09-03 | 1978-03-24 | Matsushita Electric Ind Co Ltd | Magnetic tape |
JPS5356804U (en) * | 1976-10-18 | 1978-05-15 |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS52206B2 (en) * | 1972-08-30 | 1977-01-06 |
-
1979
- 1979-12-11 JP JP16052879A patent/JPS5683841A/en active Granted
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5093103A (en) * | 1973-12-19 | 1975-07-25 | ||
JPS51147408U (en) * | 1975-05-20 | 1976-11-26 | ||
JPS52206U (en) * | 1975-06-20 | 1977-01-05 | ||
JPS5256902A (en) * | 1975-11-06 | 1977-05-10 | Sony Corp | Production of magnetic recording medium |
JPS5331112A (en) * | 1976-09-03 | 1978-03-24 | Matsushita Electric Ind Co Ltd | Magnetic tape |
JPS5356804U (en) * | 1976-10-18 | 1978-05-15 |
Cited By (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6223367B2 (en) * | 1981-06-11 | 1987-05-22 | Teijin Ltd | |
JPS57205824A (en) * | 1981-06-11 | 1982-12-17 | Teijin Ltd | Magnetic recording medium |
US4546036A (en) * | 1983-12-22 | 1985-10-08 | Minnesota Mining And Manufacturing Company | Magnetic recording medium having opaque polyester film base |
US4603073A (en) * | 1983-12-22 | 1986-07-29 | Minnesota Mining And Manufacturing Company | Opaque polyester film containing fine carbon black particles |
JPS60254415A (en) * | 1984-04-16 | 1985-12-16 | ヘキスト アクチエンゲゼルシヤフト | Multilayer biaxially stretched support sheet for informationsupport by magnetism and manufacture thereof |
JPH0625267B2 (en) * | 1985-12-17 | 1994-04-06 | ダイアホイルヘキスト株式会社 | Polyethylene-2,6-naphthalate film for high density magnetic recording media |
JPS62143938A (en) * | 1985-12-17 | 1987-06-27 | Diafoil Co Ltd | Polyethylene-2,6-naphthalate film for high-density magnetic recording medium |
JPS638937U (en) * | 1986-07-04 | 1988-01-21 | ||
JPS63149830A (en) * | 1986-12-12 | 1988-06-22 | Dainippon Printing Co Ltd | Multi-layered film for information memory card |
JPH01105740A (en) * | 1987-10-19 | 1989-04-24 | Diafoil Co Ltd | Polyester multilayer film for prepaid card |
JPH07112730B2 (en) * | 1987-10-19 | 1995-12-06 | ダイアホイルヘキスト株式会社 | Polyester multilayer film for prepaid cards |
JPH0382536A (en) * | 1989-08-28 | 1991-04-08 | Toray Ind Inc | Composite polyester film |
JPH0382535A (en) * | 1989-08-28 | 1991-04-08 | Toray Ind Inc | Composite polyester film |
JPH0382534A (en) * | 1989-08-28 | 1991-04-08 | Toray Ind Inc | Composite polyester film |
JPH0382537A (en) * | 1989-08-28 | 1991-04-08 | Toray Ind Inc | Composite polyester film |
JP2009061780A (en) * | 1996-08-14 | 2009-03-26 | Dupont Teijin Films Us Lp | Polyester film |
Also Published As
Publication number | Publication date |
---|---|
JPH0226286B2 (en) | 1990-06-08 |
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