一、前言自1898年丹麦普尔逊发明钢丝录音机以来,磁记录技术已在录音、录像、计测、电子计算机等领域获得了广泛的应用。作为磁记录设备心脏的磁头,不仅品种、数量急剧增加,其结构、性能也在不断改进和提高。表1为两类磁头的进展情况。 I. Preface Since 1898 Danish Pulson invented the steel tape recorder, the magnetic recording technology has been widely used in the fields of recording, video recording, measurement and electronic computer. As the magnetic head of the magnetic recording device, not only the variety and the number of the magnetic recording heads have rapidly increased, the structure and performance have been continuously improved and improved. Table 1 shows the progress of two types of heads.