Browse Prior Art Database

Direct Metal Transfer by Resistive Ribbon Printing: Use of Indium As Release Agent

IP.com Disclosure Number: IPCOM000107364D
Original Publication Date: 1992-Feb-01
Included in the Prior Art Database: 2005-Mar-21
Document File: 2 page(s) / 61K

Publishing Venue

IBM

Related People

Afzali-Ardakani, A: AUTHOR [+4]

Abstract

Disclosed is a multilayer resistive ribbon which contains a thin layer of Indium (or tin) as a conductive release agent, facilitating transfer of metals from the ribbon to substrates.

This text was extracted from an ASCII text file.
This is the abbreviated version, containing approximately 66% of the total text.

Direct Metal Transfer by Resistive Ribbon Printing: Use of Indium As Release Agent

       Disclosed is a multilayer resistive ribbon which contains
a thin layer of Indium (or tin) as a conductive release agent,
facilitating transfer of metals from the ribbon to substrates.

      Resistive Ribbon Thermal Transfer Printing is a high quality
thermal transfer printing process, R2T2 (1), in which  a matrix print
head produces localized joule heating on a conductive ribbon
containing a outer ink layer.  The heat generated in the resistive
ribbon melts the thermoplastic ink which is transferred to a
substrate.

      Using this technology with a modified resistive ribbon it was
discovered (2) that instead of ink one can transfer very thin films
of metals to polymeric substrates which undergo glass transition at
or below the temperature of the ribbon during writing.

      Disclosed here is a new version of the resistive ribbon which
can be used to transfer different kinds of metals to high temperature
polymeric substrates (e.g., polyimides) or other substrates which
have very high glass transition temperatures (e.g., ceramics or
polymer-ceramic composites). This ribbon (see the figure) consists of
a resistive (and carrier) polycarbonate-carbon composite layer with a
thickness of 10-25 micrometers which is coated with a thin (25-100
nm) film of aluminum as the return electrode.  The aluminum film is
coated with a thin (50- 200 nm) film of indium (layer 3 in the...