Browse Prior Art Database

Cleaner Blade Filter

IP.com Disclosure Number: IPCOM000117583D
Original Publication Date: 1996-Apr-01
Included in the Prior Art Database: 2005-Mar-31
Document File: 2 page(s) / 66K

Publishing Venue

IBM

Related People

DeLessio, A: AUTHOR

Abstract

In the tape drive industry there are many factors which determine our ability to succeed. Fly height of the tape above the head, tape tension, air bearing pressure, etc.. The air delivery system in a tape drive must maintain a high degree of cleanliness due to the limitations of head fly height and the potential of impregnation of the tape surface with airborne debris.

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This is the abbreviated version, containing approximately 62% of the total text.

Cleaner Blade Filter

      In the tape drive industry there are many factors which
determine our ability to succeed.  Fly height of the tape above the
head, tape tension, air bearing pressure, etc..  The air delivery
system in a tape drive must maintain a high degree of cleanliness due
to the limitations of head fly height and the potential of
impregnation of the tape  surface with airborne debris.

      An exploration of different types of tape material reveal
susceptibility to dust particles that were not a problem before.
These particles will enter any air stream and deposit contaiminants
on the surface of the tape.  As the tape wraps itself over the
particles, the  particles become embossed in the surface of the tape
and will cause read/write errors.

      There are several major components in the tape path that are
designed to force the tape to fly over the head at the proper height
to permit head reading and writing of the tape.  Fig. 1 is an IBM*
3480 Head Guide FRU consisting of a Cleaner Blade, Hydrostatic air
bearings, and the Read/Write Head.  The focus is on the cleaner blade
pictured in Fig. 2, consisting of a tape high housing with fixed
steel cutting blades positioned such that they can scrape debris off
the surface of the tape in either the forward of reverse direction of
tape movement.  There are vacuum chambers located close to the two
blades which take the debris away.  If the tape should impinge too
far over the vacuum openings, th...