Hitachi Global Storage Technologies Netherlands B.v.

Omron Corporation

Mitsuru Kitamura

Masahiko Katoh

Kazuo Sasaki

Hiroaki Uchiyama

Kentaro Mori

Takashi Inagaki

Masashi Fukura

Shojiro Oku

Hitoshi Tamura

Masashi Murayama

Takashi Nishikawa

Tadashi Ikeno

Migifumi Ikeda

Shigeki Watabe

Sigeru Makita

Yuhichiroh Matsunaga

Mutsuo Satoh

Minoru Kamada

Embodiments of the invention relate to erasing data recorded on a magnetic disk with increased certainty by using an external magnetic field. One embodiment is directed to a method for erasing data recorded on a magnetic disk, which is housed in a magnetic disk drive, by using an external erasure magnetic field generated by an external erasure magnetic field generator. The method comprises the steps of: moving a first magnetic disk drive within an external erasure magnetic field in a moving state appropriate for the type of the first magnetic disk drive, and erasing data recorded on a magnetic disk in the first magnetic disk drive; and moving a second magnetic disk drive, which differs in type from the first magnetic disk drive, within an external erasure magnetic field in a moving state that differs from the moving state of the first magnetic disk drive, and erasing data recorded on a magnetic disk in the second magnetic disk drive.

Data erasure apparatus and data erasure method

Embodiments of the invention prevent a spindle motor from stopping rotation while data on a magnetic disk is being erased by using a permanent magnet. In one embodiment, data in the whole area of the magnetic disk is erased as a consequence of the magnetic disk rotating in the magnetic field of the permanent magnet located so as to face a part of the magnetic disk. A back yoke is located so as to face a base. The back yoke gives a magnetic force to the spindle motor in the opposite direction of the magnetic force of the erasing permanent magnet so that the fluid dynamic bearing spindle motor can retain the rotation as required without stopping rotation.

Embodiments of the invention provide a clamping mechanism capable of clamping a magnetic disk by an accurate fastening force. In one embodiment, a magnetic disk fastening method includes the steps of: mounting a magnetic disk on a hub structure, setting a thin plate spring having a pressure-bearing part, a flexible part and a disk holding part at a predetermined position relative to the magnetic disk with the disk holding part in contact with a surface of the magnetic disk; pressing the pressure-bearing part by screwing a fastening screw in a threaded hole formed in the hub structure; measuring a deflection by which the flexible part is deflected in the pressure-bearing part pressing step; and stopping pressing the magnetic disk upon the increase of the deflection to a predetermined value.

Fastening a magnetic disk to a hub structure

A blood pressure monitor includes a cuff to be worn on a living body portion provided with an air component for inflating and deflating said cuff, and a main body detachably mounted on the cuff provided with an electrical component, in which the main body is electrically connected with the cuff by wire or wireless.

Blood pressure monitor

A case for mounting on a probe of a radiation clinical thermometer a sheet shaped probe cover which includes a probe insertion member having an insertion opening to be inserted by the probe and an infection preventing sheet in contact with the probe insertion member. The case includes a cover storage portion for storing a series of continuing probe covers each having an engagement opening at a predetermined position thereof, a probe insertion cut portion for positioning each probe cover and for insertion by the probe, a support surface disposed around the probe insertion cut portion to support a peripheral of the insertion opening of the probe insertion member of one of the probe covers, and a projection adapted to be engaged with the engagement opening of a subsequent probe cover when the probe cover mounted on the probe is torn at the probe insertion cut portion.

Probe cover mounting case

Growing community of inventors

Kanagawa, Japan

Mitsuru Kitamura