Loading patent…
AssigneeHitachi, Ltd.
InventorsTakayuki Nakakawaji, Mitsuyoshi Shouji, Tomoe Takamura, Hiroshi Sasaki, Shuji Imazeki, Yutaka Ito
Estimating the term…
A lubricating film is provided for a magnetic disk having a data region and a CSS region formed on its surface. The lubricating film ensures low stiction and good resistance to contact sliding in the data region and also ensures good CSS durability in the CSS region. Therefore, it is possible to provide a magnetic disk and a magnetic recording/reproducing device which do not cause problems with sliding between the magnetic head and the magnetic disk while the apparatus is running normally and even when the apparatus stops accidentally. The lubricating film formed in the data region of the magnetic disk is firmly fixed to the surface of the magnetic disk and is hardly liable to stiction. In addition, it is thick enough to ensure good durability even in the case of contact sliding. The lubricating film formed in the CSS region is composed of a lubricant which is firmly fixed to the surface of the magnetic disk and another lubricant which is weakly fixed to the surface of the magnetic disk; therefore, it is superior in CSS durability. This contributes to the highly reliable magnetic disk and magnetic recording/reproducing device.
A magnetic disk, comprising:
A method for producing a magnetic disk having a lubricating layer on a protective layer of the disk surface, a CSS region on which a head slider is positioned when the magnetic disk starts and stops rotating and a data region over which the head is positioned and performs recording and reproducing while the disk is rotating, comprising:
Dependencies are inferred from the claim text.