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Conductive Belts for Improved Electromagnetic Compatibility Performance

IP.com Disclosure Number: IPCOM000116758D
Original Publication Date: 1995-Nov-01
Included in the Prior Art Database: 2005-Mar-31
Document File: 2 page(s) / 40K

Publishing Venue

IBM

Related People

Eckberg, EA: AUTHOR [+3]

Abstract

A conductive material used in the belts of an autoload system in a tape drive eliminates the need for additional Electromagnetic Compatibility (EMC) parts.

This text was extracted from an ASCII text file.
This is the abbreviated version, containing approximately 80% of the total text.

Conductive Belts for Improved Electromagnetic Compatibility Performance

      A conductive material used in the belts of an autoload system
in a tape drive eliminates the need for additional Electromagnetic
Compatibility (EMC) parts.

      The belts in the autoload system of a tape drive are made
conductive to allow any static charges to be dissipated and to keep
charges from building up during operation.  The belt system is one of
the first parts of the drive which the removable media contacts.  The
belts are injection molded, so the conductivity can be modified by
changing the base resin or by adding reinforcing strands within the
belt.

      Most high-performance tape drives have an autoloading system to
allow the media to be pulled completely into the drive to minimize
the affect of external events.  There are several varieties of
systems (such as belts or gear/rack systems).  The concept described
here could be applied to any autoloading system, since all systems
must grip the media.

      By using varying material conductivity in the belts the EMC
performance can be optimized without adding additional parts.  For
example, it might be found that a ground path with several thousand
ohms of resistance provides the optimum EMC performance, in which
case
a resin can be selected with the proper bulk resistance properties.

      The aluminum base plate Mini-QIC (3.5" form factor Quarter Inch
Cartridge) cartridges are not generally conductive on t...