FR2257403B1 - - Google Patents
Info
- Publication number
- FR2257403B1 FR2257403B1 FR7417818A FR7417818A FR2257403B1 FR 2257403 B1 FR2257403 B1 FR 2257403B1 FR 7417818 A FR7417818 A FR 7417818A FR 7417818 A FR7417818 A FR 7417818A FR 2257403 B1 FR2257403 B1 FR 2257403B1
- Authority
- FR
- France
- 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.)
- Expired
Links
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
- G11B5/73929—Polyester substrates, e.g. polyethylene terephthalate comprising naphthalene ring compounds, e.g. polyethylene naphthalate substrates
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP49006016A JPS50102303A (en) | 1974-01-11 | 1974-01-11 |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2257403A1 FR2257403A1 (en) | 1975-08-08 |
FR2257403B1 true FR2257403B1 (en) | 1976-12-24 |
Family
ID=11626892
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7417818A Granted FR2257403A1 (en) | 1974-01-11 | 1974-05-22 | Biaxially oriented polyethylene-2,6-naphthoate film - of high Youngs modulus-tensile strength, and uniform thickness for magnetic tape |
Country Status (5)
Country | Link |
---|---|
JP (1) | JPS50102303A (en) |
BE (1) | BE815395A (en) |
DE (1) | DE2424466A1 (en) |
FR (1) | FR2257403A1 (en) |
NL (1) | NL7406918A (en) |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2134442B (en) * | 1983-01-18 | 1987-05-28 | Diafoil Co Ltd | Polyester film for magnetic recording media |
JPS6126923A (en) * | 1984-07-17 | 1986-02-06 | Tdk Corp | Magnetic recording medium |
JPH0628098B2 (en) * | 1985-07-23 | 1994-04-13 | 帝人株式会社 | Magnetic recording tape |
JPS62113529A (en) * | 1985-11-13 | 1987-05-25 | Diafoil Co Ltd | Polyethylene naphthalate film |
JPS62135339A (en) * | 1985-12-09 | 1987-06-18 | Diafoil Co Ltd | Polyethylene-2,6-naphthalate film for magnetic recording medium |
JPS62219317A (en) * | 1986-03-20 | 1987-09-26 | Sony Corp | Thin metallic film type magnetic recording medium |
US4835214A (en) * | 1987-11-23 | 1989-05-30 | Eastman Kodak Company | Polymer blends useful for hot fillable containers having improved gas barrier properties |
US5051292A (en) * | 1989-02-01 | 1991-09-24 | Teijin Limited | Biaxially oriented film of polyethylene-2,6-naphthalate |
JPH0677472U (en) * | 1991-07-08 | 1994-10-28 | ジェコー株式会社 | Brush holder holding structure |
-
1974
- 1974-01-11 JP JP49006016A patent/JPS50102303A/ja active Pending
- 1974-05-20 DE DE2424466A patent/DE2424466A1/en active Pending
- 1974-05-22 NL NL7406918A patent/NL7406918A/en unknown
- 1974-05-22 FR FR7417818A patent/FR2257403A1/en active Granted
- 1974-05-22 BE BE144622A patent/BE815395A/en unknown
Also Published As
Publication number | Publication date |
---|---|
BE815395A (en) | 1974-09-16 |
FR2257403A1 (en) | 1975-08-08 |
DE2424466A1 (en) | 1975-07-31 |
NL7406918A (en) | 1975-07-15 |
JPS50102303A (en) | 1975-08-13 |
Similar Documents
Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |