초록 ▼

A thin-film magnetic recording disc for use with a read/write head in a disc drive is disclosed. To reduce the static and dynamic frictional coefficients of the disc surface, the disc is coated with a lubricant layer composed of a mixture of a polyphenoxycyclotriphosphazene lubricant and a perfluoro

A thin-film magnetic recording disc for use with a read/write head in a disc drive is disclosed. To reduce the static and dynamic frictional coefficients of the disc surface, the disc is coated with a lubricant layer composed of a mixture of a polyphenoxycyclotriphosphazene lubricant and a perfluoropolyether oil. Also disclosed is a lubricant composition containing these two components, as well as a method for improving the lubricating properties of a perfluoropolyether oil.

대표청구항 ▼

A thin-film magnetic recording disc for use with a read/write head in a disc drive, comprising a substrate, a magnetic recording film formed on the substrate, a protective overcoat formed on the recording film, and an outer lubricant layer comprising a hexaphenoxycyclotriphosphazene lubricant and a

A thin-film magnetic recording disc for use with a read/write head in a disc drive, comprising a substrate, a magnetic recording film formed on the substrate, a protective overcoat formed on the recording film, and an outer lubricant layer comprising a hexaphenoxycyclotriphosphazene lubricant and a perfluoropolyether oil, wherein each phenoxy group in the lubricant, taken separately, is substituted with one or more short chain substituents selected from the group consisting of F, CF3, OCF3, CF2CF3, CH2CF3, OCF2CF3, and OCH2CF3, and wherein said hexaphenoxycyclotriphosphazene lubricant and perfluoropolyether oil are present in relative proportions effective to provide a significant reduction in frictional drag relative to the reduction in drag provided by the hexaphenoxycyclotriphosphazene lubricant or perfluoropolyether oil alone.