Citizen Watch Company, Ltd.

Kazuyuki Sunaga

Shingo Hashimoto

Yushi Kawasaki

Kaoru Kasugai

Yu Yasuda

A double head supporting mechanism for a magnetic disk drive including an arm body and a carriage. The arm body includes an upper arm and a lower arm which are supported at their rear ends in a mutually rotatable manner. Both arms support an upper head and a lower head, respectively. Both of these heads hold a magnetic disk from both sides, at a mutually facing position, by having the magnetic disk inserted between them. The carriage is able to make reciprocal movement along the direction of the disk diameter. The arm body is held on its rear end side by the carriage in such a manner that it can swing freely by means of a common supporting spring. Both heads are constructed with a design so that they can follow the vertical deviation of the magnetic disk caused during rotation of the disk. The carriage is provided with a stopper to stop the lower arm from moving excessively. One of the heads is fixed to one of the arms, while the other head is held by the other arm through a gimbal spring in an inclinable manner. The common supporting spring is disposed along nearly the same plane as that of the magnetic disk.

Double head supporting mechanism for magnetic disk drive

A magnetic recording head includes a read/write core and an erase core sandwiched and fixedly connected between a main slider and an auxiliary slider, a coil assembly having back bars closely attached to the respective cores which a read/write coil and an erase coil are wound around and fixed thereon, and a gimbal spring on which the main slider is fixed. The read/write coil and the erase coil are laterally arranged along in parallel with the gimbal spring, and the sliders, the cores and the coil assembly are respectively arranged on the one side of the gimbal spring.

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Saitama, Japan

Kazuyuki Sunaga