Magnetic recording system

Abstract

Abstract PURPOSE:To achieve high-density recording on a recording medium by a system which magnetizes the recording medium vertically, by setting readout head width nearly a half recording wavelength while increasing write head width above the readout head width. CONSTITUTION:When a current is flowed through the coil 4 of a writing head 2, magnetomotive force is generated at the head 2 and a recording medium 1 is magnetized in a direction (f) perpendicular to its movement direction to track width Ww. The core width Tw of the head 2 has a value where a core is not saturated when the magnetomotive force is applied, it increases above the core width Tr of a reading head 3. Then the core width Tr of the head 3 is set nearly a half recording wavelength lambda to output a maximum reproduction output to a coil 5. Further, since the head 3 only picks up weak magnetic flux, it is miniaturized and the recording wavelength lambda is further decreased to achieve high-density recording to a recording medium.

Inventors

• 👤 Katsuhiko Ito
• 👤 Yoichi Murakami

Bibliographic Details