Browse Prior Art Database

Single Step Process for Lubricant Application and Bonding

IP.com Disclosure Number: IPCOM000111853D
Original Publication Date: 1994-Apr-01
Included in the Prior Art Database: 2005-Mar-26
Document File: 2 page(s) / 39K

Publishing Venue

IBM

Related People

Foster, JS: AUTHOR [+4]

Abstract

Disclosed is an improvement to the manufacturing process by which lubricant is applied and bonded to a storage disk. The conventional dipping method is modified and the ultraviolet-bonding process is incorporated into the same system. The result is a simpler, more cost-effective one-step process.

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This is the abbreviated version, containing approximately 80% of the total text.

Single Step Process for Lubricant Application and Bonding

      Disclosed is an improvement to the manufacturing process by
which lubricant is applied and bonded to a storage disk.  The
conventional dipping method is modified and the ultraviolet-bonding
process is incorporated into the same system.  The result is a
simpler, more cost-effective one-step process.

      The currently used procedure for applying lubrication to a
storage disk and subsequently bonding the lubricant to the disk
surface takes several steps.  First, the disk is dipped into a vat of
lubricant (mixed with a suitable solvent), and slowly withdrawn to
provide a thin, even lubricant coating to the disk surface.  Next,
the disk is irradiated for uv-bonding by using mercury (HG) lamps in
an inert environment.  The environment is a suitable gas (e.g.,
nitrogen) or vacuum which precludes the generation of reactive gases
(such as ozone) during exposure to the ultraviolet light.  Free
lubricant remains after the uv-bonding process.  If thermal, rather
than uv-bonding is used and free lubricant is required on the disk
surface, such lubricant must be applied after bonding by a second
dipping step.  In either bonding procedure, the disks must be
transported through the air from a dipping station to the bonding
station, and perhaps to a dipping station.

      In the present invention, the disk is lubricated and the
coating bonded in a single step.  The disk is immersed in a bath
containing l...