JPS5982629A - 磁気記録用ベ−スフイルム - Google Patents
磁気記録用ベ−スフイルムInfo
- Publication number
- JPS5982629A JPS5982629A JP58158107A JP15810783A JPS5982629A JP S5982629 A JPS5982629 A JP S5982629A JP 58158107 A JP58158107 A JP 58158107A JP 15810783 A JP15810783 A JP 15810783A JP S5982629 A JPS5982629 A JP S5982629A
- Authority
- JP
- Japan
- Prior art keywords
- film
- less
- value
- magnetic recording
- base film
- 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
- 239000002245 particle Substances 0.000 claims abstract description 23
- 230000000630 rising effect Effects 0.000 abstract 1
- 239000010408 film Substances 0.000 description 37
- 229920000728 polyester Polymers 0.000 description 7
- 238000000034 method Methods 0.000 description 6
- 238000005286 illumination Methods 0.000 description 5
- 238000005299 abrasion Methods 0.000 description 4
- 229920000139 polyethylene terephthalate Polymers 0.000 description 4
- 239000005020 polyethylene terephthalate Substances 0.000 description 4
- 229920000642 polymer Polymers 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 3
- 230000008094 contradictory effect Effects 0.000 description 3
- 239000010419 fine particle Substances 0.000 description 3
- -1 polyethylene terephthalate Polymers 0.000 description 3
- 230000003746 surface roughness Effects 0.000 description 3
- 238000011282 treatment Methods 0.000 description 3
- 241000209094 Oryza Species 0.000 description 2
- 235000007164 Oryza sativa Nutrition 0.000 description 2
- 239000011575 calcium Substances 0.000 description 2
- 238000003490 calendering Methods 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 229920006267 polyester film Polymers 0.000 description 2
- 235000009566 rice Nutrition 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000005995 Aluminium silicate Substances 0.000 description 1
- 229910006710 Li—P Inorganic materials 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 235000012211 aluminium silicate Nutrition 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 239000001506 calcium phosphate Substances 0.000 description 1
- 229910000389 calcium phosphate Inorganic materials 0.000 description 1
- 235000011010 calcium phosphates Nutrition 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 235000013339 cereals Nutrition 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000011247 coating layer Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000994 depressogenic effect Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 125000005487 naphthalate group Chemical group 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
- QORWJWZARLRLPR-UHFFFAOYSA-H tricalcium bis(phosphate) Chemical compound [Ca+2].[Ca+2].[Ca+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O QORWJWZARLRLPR-UHFFFAOYSA-H 0.000 description 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
- G11B5/73—Base layers, i.e. all non-magnetic layers lying under a lowermost magnetic recording layer, e.g. including any non-magnetic layer in between a first magnetic recording layer and either an underlying substrate or a soft magnetic underlayer
- G11B5/739—Magnetic recording media substrates
- G11B5/73923—Organic polymer substrates
- G11B5/73927—Polyester substrates, e.g. polyethylene terephthalate
- G11B5/73935—Polyester substrates, e.g. polyethylene terephthalate characterised by roughness or surface features, e.g. by added particles
-
- 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
- G11B5/73—Base layers, i.e. all non-magnetic layers lying under a lowermost magnetic recording layer, e.g. including any non-magnetic layer in between a first magnetic recording layer and either an underlying substrate or a soft magnetic underlayer
- G11B5/739—Magnetic recording media substrates
- G11B5/73923—Organic polymer substrates
- G11B5/73927—Polyester substrates, e.g. polyethylene terephthalate
-
- 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
- G11B5/73—Base layers, i.e. all non-magnetic layers lying under a lowermost magnetic recording layer, e.g. including any non-magnetic layer in between a first magnetic recording layer and either an underlying substrate or a soft magnetic underlayer
- G11B5/739—Magnetic recording media substrates
- G11B5/73923—Organic polymer substrates
- G11B5/73927—Polyester substrates, e.g. polyethylene terephthalate
- G11B5/73929—Polyester substrates, e.g. polyethylene terephthalate comprising naphthalene ring compounds, e.g. polyethylene naphthalate substrates
Landscapes
- Magnetic Record Carriers (AREA)
- Manufacture Of Macromolecular Shaped Articles (AREA)
- Shaping By String And By Release Of Stress In Plastics And The Like (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58158107A JPS5982629A (ja) | 1983-08-31 | 1983-08-31 | 磁気記録用ベ−スフイルム |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58158107A JPS5982629A (ja) | 1983-08-31 | 1983-08-31 | 磁気記録用ベ−スフイルム |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16086179A Division JPS5683842A (en) | 1979-12-13 | 1979-12-13 | Base film for magnetic recording |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5982629A true JPS5982629A (ja) | 1984-05-12 |
| JPH0138661B2 JPH0138661B2 (enrdf_load_stackoverflow) | 1989-08-15 |
Family
ID=15664452
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP58158107A Granted JPS5982629A (ja) | 1983-08-31 | 1983-08-31 | 磁気記録用ベ−スフイルム |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5982629A (enrdf_load_stackoverflow) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61261026A (ja) * | 1985-05-15 | 1986-11-19 | Teijin Ltd | 二軸延伸ポリエステルフイルム |
| JPS63254134A (ja) * | 1987-04-13 | 1988-10-20 | Teijin Ltd | ポリエステルフイルム |
| JPS63254135A (ja) * | 1987-04-13 | 1988-10-20 | Teijin Ltd | ポリエステルフイルム |
| JPH01185818A (ja) * | 1988-01-20 | 1989-07-25 | Toshiba Corp | 磁気テープ |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS51115571A (en) * | 1975-04-04 | 1976-10-12 | Asahi Chemical Ind | Method of manufacturing polyester film |
| JPS53106783A (en) * | 1977-03-01 | 1978-09-18 | Teijin Ltd | Polyester film with improved travelling property |
| JPS53106789A (en) * | 1977-03-01 | 1978-09-18 | Unitika Ltd | Phenol-type chelate resin and adsorption teratment using the same |
| JPS5415979A (en) * | 1977-07-06 | 1979-02-06 | Teijin Ltd | Polyester film |
| JPS5415978A (en) * | 1977-06-28 | 1979-02-06 | Teijin Ltd | Polyester film |
| JPS5417981A (en) * | 1977-07-11 | 1979-02-09 | Teijin Ltd | Oriented polyester film for photosensive recorder |
| JPS5434207A (en) * | 1977-08-23 | 1979-03-13 | Teijin Ltd | Polyester film |
| JPS54143112A (en) * | 1978-04-27 | 1979-11-08 | Matsushita Electric Ind Co Ltd | Magnetic recording medium |
-
1983
- 1983-08-31 JP JP58158107A patent/JPS5982629A/ja active Granted
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS51115571A (en) * | 1975-04-04 | 1976-10-12 | Asahi Chemical Ind | Method of manufacturing polyester film |
| JPS53106783A (en) * | 1977-03-01 | 1978-09-18 | Teijin Ltd | Polyester film with improved travelling property |
| JPS53106789A (en) * | 1977-03-01 | 1978-09-18 | Unitika Ltd | Phenol-type chelate resin and adsorption teratment using the same |
| JPS5415978A (en) * | 1977-06-28 | 1979-02-06 | Teijin Ltd | Polyester film |
| JPS5415979A (en) * | 1977-07-06 | 1979-02-06 | Teijin Ltd | Polyester film |
| JPS5417981A (en) * | 1977-07-11 | 1979-02-09 | Teijin Ltd | Oriented polyester film for photosensive recorder |
| JPS5434207A (en) * | 1977-08-23 | 1979-03-13 | Teijin Ltd | Polyester film |
| JPS54143112A (en) * | 1978-04-27 | 1979-11-08 | Matsushita Electric Ind Co Ltd | Magnetic recording medium |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61261026A (ja) * | 1985-05-15 | 1986-11-19 | Teijin Ltd | 二軸延伸ポリエステルフイルム |
| JPS63254134A (ja) * | 1987-04-13 | 1988-10-20 | Teijin Ltd | ポリエステルフイルム |
| JPS63254135A (ja) * | 1987-04-13 | 1988-10-20 | Teijin Ltd | ポリエステルフイルム |
| JPH01185818A (ja) * | 1988-01-20 | 1989-07-25 | Toshiba Corp | 磁気テープ |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0138661B2 (enrdf_load_stackoverflow) | 1989-08-15 |
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