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Polymer Thick Film Cable Adapted for 0.005" to 0.008" Zero Insertion Force Connectors

IP.com Disclosure Number: IPCOM000119591D
Original Publication Date: 1991-Feb-01
Included in the Prior Art Database: 2005-Apr-01
Document File: 3 page(s) / 83K

Publishing Venue

IBM

Related People

Eisele, ET: AUTHOR [+7]

Abstract

The competitive business of producing printers and typewriters is a constant effort in the study of cost reduction requiring quality levels as good as, or better than, the items that are being replaced. One of these studies is described in this article.

This text was extracted from an ASCII text file.
This is the abbreviated version, containing approximately 64% of the total text.

Polymer Thick Film Cable Adapted for 0.005" to 0.008" Zero Insertion
Force Connectors

      The competitive business of producing printers and
typewriters is a constant effort in the study of cost reduction
requiring quality levels as good as, or better than, the items that
are being replaced.
      One of these studies is described in this article.

      A copper laminated LED (Light Emitting Diode) cable operated in
a low current capacity as part of an electronic indicator card for
the Personal WHEELWRITER* typewriter family; the copper laminated
cable ranged in thickness from 0.008" to 0.009".

      The Zero Insertion Force (ZIF) connectors mating to the cable
possessed a tolerance of 0.008"  0.002".

      Polymer Thick Film (PTF) technology (screened conductive ink
onto MYLAR** polyester substrates) is an established technology that
has demonstrated to be a very viable and economical substitute for
laminated copper cables, in low current applications.

      After a significant battery of tests that included, electrical
migration, exposure to salt solutions, temperature and humidity
(biased) evaluation, flame testing and flex testing, it was proven
that the PTF cable was a reliable and cost-effective alternative to
copper cables in this particular application.

      Invention: A significant physical problem existed with the
employment of the PTF MYLAR cable and compatibility with the 0.008"
ZIF connectors.
a)   the greatest cost was r...