JPS6462814A - Positioner construction - Google Patents

Abstract

PURPOSE:To minimize the fluctuation of the yaw angle of a data head and to shorten an access time by making the arm length of a servo head shorter than the arm length of a data head and equalizing approximately the yaw angle of the inner side of the data head and the outer side with a very small value. CONSTITUTION:A positioner construction having a servo head 5' and a data head 5 is obtained, the arm length of the servo head 5' is made shorter than the arm length of the data head 5, a yaw angle THETA of the inner side and the outer side of the data head 5 is made much smaller and made approximately equaler. Namely, for a distance Rh of a gap (a) to read and write and a head rotation center Oh, the high rigidity and the shortening of the access time are improved by shortening the servo head 5'. The servo head 5' always reads, the position may be found out, and even when the yaw angle is large, the head has a capacity to control. On the other hand, for the data head 5, by obtaining the arm length to minimize greatly the yaw angle THETA of the inner side and the outer side and approximately equalize it, the high accuracy of the read/write characteristics is maintained. Thus, the lightening and the high rigidity are executed and the high speed access can be executed.