WEAR OF TRIBE-ELEMENTS OF VIDEO TAPE-RECORDERS

The helical scan magnetic recording equipment, like the video tape rec orders (VTR), consist of many tribe-elements. The wear of these tribo- elements is an essential problem affecting the reliability of the equi pment, The rotating magnetic head in high-speed rubbing with the magne tic tape needs a self-cleaning effect by mild wear. A simple trial of reducing the head wear often brings partial recession, friction polyme r and brown stain. The summary of the current study of head wear is gi ven by dividing it into the head factors, the tape factors, the system factors and the atmosphere factors. The computational analysis of hea d contour change caused by wear is compared with the experimental resu lts. The outline of the tribology of motor, capstan and tape path in t he VTR is introduced.