Base film for magnetic recording tape with F-5 values of 9-15 Kg/mm.sup.2
US4508782A · kind A · utility
9Cited by
10References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 27, 1984 |
| Grant date | Apr 2, 1985 |
| Priority date | — |
| Expiry date | Jun 27, 2004 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A base film for a magnetic recording tape is provided, which possesses an F-5 value of 9-15 Kg/mm.sup.2 as measured along both the longitudinal and transverse directions and in which the ratio of the average surface roughness to the particle size of included particles is 2.0.times.10.sup.-3 to 5.1.times.10.sup.-3. The average surface roughness is preferably 0.005-0.040 micron. The magnetic recording tape made therefrom exhibits an improved running property and an improved abrasion resistance as well as good surface characteristics.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.