一、前言在录象机中,通常把驱动磁带的传动机构以及与磁带运行有关的机构称为机芯。机芯在录象机中,通常都设计成一个独立的部件,其质量好坏,对录象机整机的性能往往有很大影响。目前各种家用盒式录象机机芯,通常包括以下一些机构: (1) 磁鼓驱动机构; I. INTRODUCTION In video recorders, the drive mechanism that drives the tape, and the mechanism associated with the operation of the tape, are often referred to as the movement. The movement in the video recorder, usually designed as a separate component, its quality is good or bad, the performance of the video recorder often have a great impact. Currently a variety of home video cassette recorder movement, usually includes the following institutions: (1) drum drive mechanism;