抄録
A thin film magnetic head has been expected to be applied to high density recordings. However, the practical use of the head for video recordings is not yet realized because of its problems regarding head contact reliability, impedance noise and low frequency transmission characteristics. In order to overcome such problems, authors have developed a new thin film magnetic head for video recording applications, which is made solely of high heat resistant inorganic materials, the coil resistance of which is lowered. The developed head is evaluated by using a metal evaporated tape (ME tape) and a metal particulate tape (MP tape). The head of innovative structure is proved to be highly reliable both in the normal and level-different wear characteristics, and to have a superior low frequency transmission characteristic and a high carrier-to-noise ratio. And having a gap depth of 5μm, the newly developed head has sufficient performance for VCR.
