Mediken Inc.

Yuichi Hyakusoku

Mitsugi Maekawa

Masaaki Kato

Tadao Tokushima

Takamitsu Kato

A surface modification method for an aluminum substrate, which comprises treating a Ni&mdash;P plated aluminum substrate with a functional water having a plus or minus oxidation-reduction potential for a predetermined period of time in a washing step after a polishing step of the Ni&mdash;P plated aluminum substrate.

Surface modification method for an aluminum substrate

A hard disk carrier includes a core rod for collectively holding hard disks in a state of piercing center holes of the hard disks arranged in the axial direction with predetermined separations, a release means for collectively disengaging the holding state of the hard disks by the core rod, a container body for accommodating the hard disks held by the core rod and a cover body for sealing the opening of the container body accommodated with the hard disks.

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Tokyo, Japan

Yuichi Hyakusoku