Other

Tokyo Shibaura Denki Kabushiki Kaisha

Yoshiki Hayashi

Masahiro Nozaki

Ken Ishitobi

Tadanori Nagao

Kiyomi Sasano

Tsuneo Hibi

Toshiaki Yamauchi

To provide a polishing composition which enables maintenance of excellent properties and high quality of the surface of a hard disk without lowering polishing rate during polishing of the surface, and which can provide a polished surface in which the amount of dub-off is considerably reduced as compared with that of a conventional level, a polishing composition containing water, a polishing material (particularly alumina), a polishing accelerator, and at least one of hydroxypropyl cellulose and hydroxyalkyl alkyl cellulose is provided.

Polishing composition and method

The drying apparatus includes a drum rotatably arranged in an outer box with a certain distance spaced from the inner surface of the outer box and housing therein materials to be dried. An air supply device supplies heated air into the drum, and a moisture removing device cooles air discharged from the drum by means of air taken from outside of the outer box to remove moisture from air discharged. Air discharged from the drum is guided to the moisture removing device through a first path. A space defined by the inner surface of the outer box and the outer surface of the drum constitutes a second path through which air passed through the moisture removing device is guided to the air supply device.

Drying apparatus having recycle air path

Growing community of inventors

Nagoya, Japan

Yoshiki Hayashi