随着磁记录系统向高密度、高分辨率和高速度的方向发展,为保证信息存储和输出的可靠性,要求磁头和磁带的接触愈来愈紧密,磁带的耐磨性和耐用性愈来愈高。同时,还要求磁头和磁带的接触张力及带速在运转过程中保持恒定。因此,如何减少磁带与磁头及驱动部 With the development of high-density, high-resolution and high-speed magnetic recording systems, in order to ensure the reliability of information storage and output, the contact between the magnetic head and the magnetic tape needs to be closer and closer, and the abrasion resistance and durability of the magnetic tape are more and more The higher. At the same time, it is also required that the contact tension between the head and the tape and the tape speed be kept constant during operation. Therefore, how to reduce the tape and head and drive