Browse Prior Art Database

V Shape Actuator Arm for Disk Pitch Reduction

IP.com Disclosure Number: IPCOM000110639D
Original Publication Date: 1992-Dec-01
Included in the Prior Art Database: 2005-Mar-25
Document File: 2 page(s) / 57K

Publishing Venue

IBM

Related People

Nakamura, T: AUTHOR [+3]

Abstract

Disclosed is a design for rotary-type actuator arms with in-line type magnetic heads for reducing disk to disk spacing or disk pitch of magnetic disks in hard disk drives. Higher volumetric density can be achieved by having more disks in a drive or by having a lower height profile of the drive itself. The design is widely applicable to all hard disk drives that have more than one magnetic disk inside the disk enclosure.

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V Shape Actuator Arm for Disk Pitch Reduction

       Disclosed is a design for rotary-type actuator arms with
in-line type magnetic heads for reducing disk to disk spacing or disk
pitch of magnetic disks in hard disk drives.  Higher volumetric
density can be achieved by having more disks in a drive or by having
a lower height profile of the drive itself.  The design is widely
applicable to all hard disk drives that have more than one magnetic
disk inside the disk enclosure.

      The design can be best understood with reference to the
drawings of the rotary-type actuator arm between two disks, as shown
in Figs.  1, 2, and 3.  The arm has the shape of the letter V,
having its pivot 1 at the bottom of the V-shape and mounts for
in-line type magnetic heads 2 and 3 at the free ends of V arms 4
and 5.  The center 6 of the disks is located between the heads 2 and
3.  When the head 2 on the V-shape arm is at the innermost recording
area of the disk surface, the head 3 on the same V-shape arm is at
the outermost recording area.  The design is such that when one of
the ends 4 and 5 is for the lower head 2 (head for the lower
magnetic disk surface), the other end 5 is for the upper head 3 (head
for the upper magnetic disk surface).  Cross sections II-II and
III-III are shown in Figs. 2 and 3 for the cases in which the end
4 is for the lower head 2 and the end 5 for the upper head
3, respectively.

      For the design proposed here, the required disk to disk spa...