Servowriter With Separate Cooperative Write and Read Heads
Original Publication Date: 1985-Aug-01
Included in the Prior Art Database: 2005-Feb-19
An apparatus for writing a pattern of servo information on a servo disk for use in a magnetic recording disk file utilizes a carriage which supports both a fixed write head and a moveable read head angularly displaced from the write head. As the carriage moves the write head along a radius from the inside diameter to the outside diameter of the servo disk for writing servo tracks on the disk, a crystal motor drive attached to the moveable read head slide-carriage moves the read head along a radius angularly displaced from the path of the write head and one track behind the write head. In this manner the read head reads the previously written servo track. As shown in the figure, the moveable carriage 10 supports both a fixed write head 12 and a moveable read head 14 which is attached to a slide 30.