Magnetic recording medium
US4537832A · kind A · utility
12Cited by
3References
21Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 20, 1983 |
| Grant date | Aug 27, 1985 |
| Priority date | — |
| Expiry date | Dec 20, 2003 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/2967
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A magnetic recording medium for use in video and other applications is presented which comprises a substrate, a continuous thin magnetic layer of cobalt and at least one selected from nickel, chromium, and oxygen, preferably obliquely evaporated on the substrate, and a topcoat formed over the magnetic layer and made of a phosphate compound having the formula: ##STR1## where R is selected from alkyl radicals having 10 to 22 carbon atoms, and Y and Y' are independently selected from the group consisting of hydrogen atom, alkyl radicals and monovalent cations, and Y and Y' may together represent a divalent cation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.