Browse Prior Art Database

Laminated Suspension with Horizontal Head/Slider in a Data Recording Disk File

IP.com Disclosure Number: IPCOM000115740D
Original Publication Date: 1995-Jun-01
Included in the Prior Art Database: 2005-Mar-30
Document File: 4 page(s) / 89K

Publishing Venue

IBM

Related People

Albrecht, D: AUTHOR [+3]

Abstract

A head/suspension design is disclosed that achieves very low head to disk load for contact recording with a horizontal magnetic head slider attached to a laminated suspension. The configuration achieves a very low cost suspended head assembly that has very high shock resistance. Also, a method of handling heads and suspensions as panels or matrices of parts is disclosed that achieves more reliable and inexpensive handling of small delicate parts.

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This is the abbreviated version, containing approximately 52% of the total text.

Laminated Suspension with Horizontal Head/Slider in a Data Recording
Disk File

      A head/suspension design is disclosed that achieves very low
head to disk load for contact recording with a horizontal magnetic
head slider attached to a laminated suspension.  The configuration
achieves a very low cost suspended head assembly that has very high
shock resistance.  Also, a method of handling heads and suspensions
as panels or matrices of parts is disclosed that achieves more
reliable and inexpensive handling of small delicate parts.

      A top view of the invention is shown in Fig. 1 (approximate
scale is 5:1).  The length noted as L1 is the cantilevered portion of
the suspension.  The length noted as L2 is the length through which
the part is attached (via weld or adhesive) to a rigid arm structure.
The suspension is flat prior to attachment to the arm (arm not
shown).  The end of the arm is at an angle relative to the disk
surface.  Thus, when the arm is in position relative to the disk the
cantilevered portion of the suspension is preloaded against the disk.

      The suspension consists of three laminates: two metal laminates
with a non metallic insulating laminate between the metal laminates.
Fig. 2 is an exploded view of detail A from Fig. 1.  The top layer
(1) is the signal carrying layer consisting of two lines, typically
copper of about 18 um thickness.

      The second layer (2) is an insulating layer, typically
polyimide of about 13 um thickness.  The third layer (3) provides
most of the structural stiffness and also acts as a ground plane for
the signal carrying lines.  It is typically stainless steel of about
25 um thickness.  These three l...