Magnetic disk drive having a surface coating on a magnetic disk

Abstract

A magnetic disk is produced with improved yield by forming a DLC protective film by a d.c. magnetron sputtering process conducted in a sputtering atmosphere containing oxygen. The magnetic disk carries a lubricating film on the DLC film wherein a fluorocarbon resin constituting the lubricating film contains photocrosslinking groups. A lubricating film having non-polar end groups is also disclosed.

1 . A magnetic disk drive comprising: 
 a rotary magnetic disk;    a magnetic head scanning a surface of said rotary magnetic disk in a state that said magnetic head is floated form said surface of said rotary magnetic disk;    an arm carrying said magnetic head; and    a drive mechanism driving said arm,    wherein said magnetic disk carries a lubricating film containing therein a photocrosslinking functional group, said photocrosslinking functional group causing a crosslinking in said lubricating film.    
     
     
         2 . A magnetic disk drive as claimed in  claim 1 , wherein said photocrosslinking functional group is selected from the group consisting of: an alkenyl group, an alkenyl halide group, an aryl halide group, an aryl azide group, piperonyl group and epoxy group.  
     
     
         3 . A magnetic disk drive as claimed in  claim 1 , wherein said magnetic disk is covered with a carbon film deposited by a CVD process and wherein said lubricating film is formed on said carbon film.