Magnetic recording medium comprising a polyethylene-2,6-naphthalate multilayered film coated on both sides by a coating layer
US5364684A · kind A · utility
6Cited by
10References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 6, 1992 |
| Grant date | Nov 15, 1994 |
| Priority date | — |
| Expiry date | Jul 6, 2012 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31971
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Disclosed herein is a magnetic recording medium comprising: a stretched polyethylene-2,6-naphthalate multilayered film having a high-roughness surface and a low-roughness surface; a coating layer (A) having specific surface properties and being formed on the high-roughness surface of said multilayered film; a coating layer (B) having a specific surface property and being formed on the low-roughness surface of said multilayered film; and a thin ferromagnetic metal film formed on said coating layer (B).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.