Process for Recording Disk File Servo
Original Publication Date: 1981-Mar-01
Included in the Prior Art Database: 2005-Feb-11
In a track following servo system using a rotary actuator, a wide read head is used to read multiple servo tracks and compare the outside tracks for centering. The present process takes advantage of the nature of a rotary actuator to precisely position the rotary arm and write the narrow tracks with the wide read head. Step 1 Mount a positioning tool, as shown in Fig. 1, to the rotary arm to be recorded. Step 2 Bring the disk up to normal operating temperature. Step 3 Position the servo head to the first tracks. Step 4 Record the first track using standard servo track writing equipment. Step 5 Advance the tool to the next position. The tool should be designed so that the head will be positioned over two-thirds of the track just written (if a 3 to 1 ratio of servo track width to data track width is being used).