Medium related members
US4988573A · kind A · utility
7Cited by
0References
2Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 13, 1989 |
| Grant date | Jan 29, 1991 |
| Priority date | — |
| Expiry date | Jul 13, 2009 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31699
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A plasma-polymerized film covers a surface of a medium related member which constructs or is disposed in a casing in which a tape or disk-shaped recording medium is receiving for travel or rotating motion. The film contains C, F and at least one element of Si, B, P and N. The total content of F and at least one element of Si, B, P, and N ranges from 5 to 40 atom % of the film, and the atomic ratio of (Si+B+P+N)/F ranges from 2/10 to 5/1.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.