Nec Corporation

Atsushi Hirano

Yuichi Hayakawa

Makoto Miyazaki

Hiroshi Tsutsui

Takeshige Iwakura

Yasuhiro Miyata

Koki Takahashi

A magnetic head slider assembly for a magnetic recording and reproducing apparatus. A first slide surface and a second slide surface, which are comparatively wide, are formed on the surface of the assembly which will face a recording medium. A first air groove intervenes between the first and second slide surfaces. Part of the first slide surface is formed by a magnetic core. A third slide surface adjoins the first slide surface via a second air groove at the side opposite to the first air groove. The third slide surface is slightly remoter from the medium than the first and second slide surfaces.

Magnetic head slider assembly

A magnetic head device incorporated in magnetic recording and playback equipment for recording and reproducing information from a magnetic disk. The device has a magnetic head which is formed with a plurality of grooves in the surface thereof that is to face a magnetic disk. The grooves reduce the friction acting between the head and the disk during operation and thereby allows the head to slide on the disk stably with a minimum of spacing loss.

Magnetic head having a groove between high and low track density cores

The structure of a magnetic head for use in a disk drive has an erase core and a read/write core which are inclined to a track of a floppy disk or disket. An erase gap and a read/write gap formed in the erase core and read/write core, respectively, each is inclined by a different angle to the longitudinal axis of the magnetic head. A shield plate is interposed between the two cores for magnetically shielding them from each other. With this configuration, the magnetic head reduces crosstalk ascribable to flux picked up by the erase core from the track.

Magnetic head with inclined core

A dual magnetic head capable of reducing unneccessary magnetic flux developed in erase cores. The dual magnetic head includes a first read/write core (30) having a first gap width (34) and extending in a track direction in which the tracks will be formed on a magnetic recording medium, a second read/write core (10) having a second read/write gap (14) with a width greater than the first gap width, and juxtaposed to the first read/write core (30) in a perpendicular direction to the track direction; and an erase core (20) having a pair of erase gaps (24, 25) located at opposite ends of the second read/write gap (14) with respect to the perpendicular direction, the erase core (20) being juxtaposed to the first read/write core (30) in the perpendicular direction and juxtaposed to the second read/write core (10) in the track direction, at least one of the facing surfaces of the erase core (20) which define the erase gaps (24, 25) therebetween being provided with an undulation. The undulation can be in the form of either a saw-tooth-like section or a waveform-like section.

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Gunma, Japan

Atsushi Hirano