Browse Prior Art Database

Dip-Lubing Mandrel for Magnetic Recording Disks

IP.com Disclosure Number: IPCOM000105636D
Original Publication Date: 1993-Aug-01
Included in the Prior Art Database: 2005-Mar-20
Document File: 2 page(s) / 40K

Publishing Venue

IBM

Related People

Gregory, TA: AUTHOR [+6]

Abstract

A device for holding magnetic recording disks during a dip-lubing process is disclosed. This device allows uniform lube delivery across the entire disk, and high withdrawal rates without loss of lube uniformity.

This text was extracted from an ASCII text file.
This is the abbreviated version, containing approximately 100% of the total text.

Dip-Lubing Mandrel for Magnetic Recording Disks

      A device for holding magnetic recording disks during a
dip-lubing process is disclosed.  This device allows uniform lube
delivery across the entire disk, and high withdrawal rates without
loss of lube uniformity.

      This device has two primary components.  The mandrel body 2
which holds the disk 1 in a vertical position along two points 5, and
the support support structure 3 which adds strength and rigidity to
the mandrel.  The body 2 has notches cut on both sides.  The top side
locates the disks and breaks the fluid as the mandrel is lifted out
of the lube bath.  The bottom notches create very small circular
ripples that cancel each other out has they break the fluid level.
Any ripples created by the support structure 3 is maintained within
the body 2 and is not seen by the disk 1.

      High lube deposit spots at the mandrel disk contact points
formed from solution held by wetted surfaces are reduced by
increasing the angle in which the disk 1 contacts the body 2 at
location 4 and 5.  Minimized displacement volume of the mandrel keeps
disturbances of the lube solution surface to a minimum resulting in
uniform lube coverage over the entire disk and the option of high
pull rates (up to 4x the previous mandrel) without loss of uniformity
(Figure).