Hitachi, Ltd.

Hideki Sonobe

Kazuo Nate

Eisei Togawa

Hiroshi Ishizaki

Hirotaka Imayama

Yasuo Hira

Masayasu Fujisawa

Saburo Suzuki

Yoshiki Hagiwara

Atsuko Ohkawa

Tamaki Toba

Mikio Tokuyama

Yoji Maruyama

Sadanori Nagaike

Teruyoshi Higashiya

Harunobu Saito

Makoto Aihara

Akiko Mizushima

Tetsuji Higashijima

Kasufumi Azuma

A magnetic head element has one or more rails formed on the surface thereof. Each rail is formed so as to have a tapered angle of 55-85&deg;. To form such a rail, ion milling is conducted; the rail substrate used is allowed to have an inclination angle to 15-60&deg; and is rotated; and there is used, as the ion milling gas, a fluorinated hydrocarbon (e.g., CH,FCF,) gas alone or a mixed gas of said fluorinated hydrocarbon gas and Ar, SF,or the like. Accordingly, a magnetic head rail shape gives a small variation in flying height between magnetic bead and magnetic disc.

Thin film magnetic head having non-linear tapered rails

Three pads are disposed on the surface of a magnetic head facing to a storage medium and are brought into contact with the surface of the storage medium through a lubricant layer. The total of areas of the three pads is equal to or larger than 0.0001 mm.sup.2 and equal to or smaller than 0.02 mm.sup.2 and the height of the pads is equal to or higher than 5 .mu.m and equal to or lower than 100 .mu.m. Two pads of the three pads include tapers formed in the front thereof and are disposed in a forward position in a relative movement direction to the storage medium and one remaining pad is disposed in a backward position. The total of areas of the two pads in the forward position is set to be narrower than an area of the pad in the backward position. A writing and reading function unit is provided in the pad in the backward position.

Magnetic storage apparatus having a head with sliding pads

A magnetic head element has one or more rails formed on the surface thereof. Each rail is formed so as to have a tapered angle of 55-85.degree.. To form such a rail, ion milling is conducted; the rail substrate used is allowed to have an inclination angle to 15-60.degree. and is rotated; and there is used, as the ion milling gas, a fluorinated hydrocarbon (e.g., CH.sub.2 FCF.sub.3) gas alone or a mixed gas of said fluorinated hydrocarbon gas and Ar, SF.sub.6 or the like. Accordingly, a magnetic head rail shape gives a small variation in flying height between magnetic head and magnetic disc.

Thin film magnetic head having non-linear rails

A magnetic head element has one or more rails formed on the surface thereof. Each rail is formed so as to have a tapered angle of 55.degree.-85.degree.. To form such a rail, ion milling is conducted; the rail substrate used is allowed to have an inclination angle to 15.degree.-60.degree. and is rotated; and there is used, as the ion milling gas, a fluorinated hydrocarbon (e.g. CH.sub.2 FCF.sub.3) gas alone or a mixed gas of said fluorinated hydrocarbon gas and Ar, SF.sub.6 or the like. Accordingly, a magnetic head rail shape gives a small variation in flying height between magnetic head and magnetic disc.

Thin film magnetic head, process for production thereof

A process for producing a magnetic head slider with at least one rail having an air bearing surface. The process includes the steps of disposing a non-metallic film on a work surface to be shaped of a magnetic head slider material so as to be in intimate contact with the work surface, patterning the non-metallic film disposed on the work surface into at least one predetermined rail shape, shaping the work surface of the magnetic head slider material utilizing the patterned non-metallic film as a mask, and stripping off the patterned non-metallic film utilized as a mask which remains on the work surface of the slider material so as to provide at least one shaped slider rail of the magnetic head slider.

Process for producing magnetic head slider

Growing community of inventors

Odawara, Japan

Hideki Sonobe