Method for providing a lubricant coating on the surface of a magneto-optical disk and resulting optical disk
US5112662A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Oct 7, 1991 |
| Grant date | May 12, 1992 |
| Priority date | — |
| Expiry date | Oct 7, 2011 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S428/90
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method for providing a lubricant coating on the surface of a magneto-optical disk is disclosed. The method includes forming a lubricant solution by dissolving a functionalized fluorinated lubricant compound in a solvent, the compound containing at least one fluorinated alkyl chain, and a functional group selected from an alcohol group (OH), carboxyl group (COOH) and phosphate group (PO.sub.4). The lubricant compound has a melting point above the ambient operating temperature of said magneto-optical disk and below about 85.degree. C. and a viscosity in the range of about one hundred to about one thousand centipoises in the temperature range of about 60.degree. to about 85.degree. C. The surface of the magneto-optical disk is coated with the lubricant solution, and the solvent is evaporated to produce a lubricant coating on the surface of a magneto-optical disk.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.