Magnetic recording medium
US4368239A · kind A · utility
40Cited by
12References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 4, 1980 |
| Grant date | Jan 11, 1983 |
| Priority date | — |
| Expiry date | Aug 4, 2000 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31938
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A magnetic recording medium having low friction coefficient and superior in aging characteristics is disclosed. The magnetic recording medium is provided with a lubricant which is strongly bonded to the magnetic recording medium by a bombardment of an electron beam. In one embodiment, the lubricant containing a molecular chain having a lubricating property, and a double bond sensitive to dissociation products such as free radicals are coated on a magnetic layer and then electron beam irradiates the magnetic layer. A radical reaction then occurs causing a covalent bond of the lubricant to the magnetic recording layer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.