Magnetic disk apparatus

• Main Authors: Shimizu, Hayato, Iwakura, Masao, Nakamura, Shigeo, Sakai, Kazuo, Togashi, Shigenori, Kaiho, Masayuki, Kobari, Toshiaki, Tokuyama, Mikio, Imai, Satomitsu, Saegusa, Shozo, Sega, Masahiko, Okazaki, Toshihisa, Yamaguchi, Yuzo
• Format: Patent
• Language: English
• Published: 09.10.2003

A magnetic disk apparatus includes magnetic disks stacked on a rotating shaft, arms supporting magnetic heads, a rotary actuator for moving the arms, and a housing forming at least a part of an arcuate-shaped shroud which substantially surrounds a portion of side surfaces of the magnetic disks so as to define a gap between the shroud and the portion of the side surfaces of the magnetic disks. The arcuate-shaped shroud has portions delimiting an open space adjacent to another portion of the side surfaces of the magnetic disks which is located on a downstream side of the arms relative to an air flow which moves on surfaces of the magnetic disks. A bypass channel provides air flow to the disks in a region of the open space at a reduced pressure on the downstream side of the arms with respect to pressure at an upstream side of the arms.