Joichiro Ezaki

Magnetic recording/reproducing system comprising a glass substrate thin film magnetic disk and a flying magnetic head with defined spacing and surface roughness

Improved floating magnetic head for high density recording

Magnetic disk recording and reproducing apparatus

Thin film magnetic head with separated yoke and pole tips

Magnetic head for a magnetic disk having a slider with indented portions for providing heat dissipation

Disk with substrate of alumina silicate resin glass

Magnetic memory device, write current drive circuit, and write current drive method

Vertical magnetic recording system using rigid disk

Magnetic recording medium comprising a glass substrate of controlled surface roughness and a magnetic thin film layer of gamma Fe2 O3

Magnetic memory device, method for writing on the same and method for reading from the same