Floppy Disk Drive With Foam Head Load Pad
Original Publication Date: 1984-Feb-01
Included in the Prior Art Database: 2005-Feb-02
A uniform head-to-disk compliance pattern is insured by the use of a foam rubber head load pad. The figure shows a cutaway portion of a floppy disk 10 which is being transduced by magnetic read/write head 11. As shown by arrow 12, head 11 moves in incremental steps in order to transduce the various data tracks carried by disk 10. In the figure, head 11 is shown positioned to transduce the center track carried by the disk, and the disk's rotational movement is out of the figure. The flexible disk is pressed into the head by a spring-loaded arm 13, whose spring bias force 14 causes foam rubber pad 15 to engage the top side of disk 10. Pad 15 spans all tracks carried by the disk, and pad 15 does not move as the head is stepped to the various disk tracks.