引言存貯信息的磁记录的重要发展方向之一是获得更高的记录密度。在数字记录中,单位面积的记录密度等于纵向信息密度与横向磁道密度的乘积,因此数字存貯能力取决于脉冲分辨能力与磁道密度。这两个因素是高密度磁头设计的主要问题。接触式记录中,在实验室的条件下,记录密度最高能达到每吋2000位信息及每吋500条磁道。 Introduction One of the important developments in magnetic recording of stored information is the achievement of higher recording densities. In digital recording, the recording density per unit area is equal to the product of vertical information density and horizontal track density. Therefore, the digital storage capability depends on the pulse resolution and the track density. These two factors are the main issues in high-density head designs. In contact recording, under laboratory conditions, recording densities up to 2000 bits per inch and 500 tracks per inch can be achieved.