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A Long-Run Direct Plate by Electro Erosion Printing

IP.com Disclosure Number: IPCOM000103455D
Original Publication Date: 1990-Nov-01
Included in the Prior Art Database: 2005-Mar-17
Document File: 1 page(s) / 45K

Publishing Venue

IBM

Related People

Afzali-Ardakani, A: AUTHOR [+3]

Abstract

Disclosed is fabrication of a Direct Plate from electro erosion printing in which an intermediate tin oxide layer is deposited to increase the adhesion of the aluminum film and reduce the scratching during electro erosion printing.

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A Long-Run Direct Plate by Electro Erosion Printing

      Disclosed is fabrication of a Direct Plate from electro erosion
printing in which an intermediate tin oxide layer is deposited to
increase the adhesion of the aluminum film and reduce the scratching
during electro erosion printing.

      The present electroNeg material developed for electro erosion
printer, which can also be used as direct plate, is a multilayer
structure (Fig. 1) in which a polymer composite of few micrometer
thickness is coated on a polymer substrate.  A very thin (30-50 nm)
film of aluminum is then vacuum deposited on top of this polymer
composite and then coated with a lubricant layer.  The press life of
this material, among other factors, is directly related to the
adhesion of the aluminum film to the polymer composite.  In order to
increase the adhesion of these two layers a very thin film (5-10 nm)
of conductive tin oxide is sputtered on the base layer.  The aluminum
film is then deposited in a vacuum evaporator and finally coated with
lubricant layer (Fig.  2).  The introduction of tin oxide layer not
only helped to increase the press life of direct plate from 2000
copies to about 10,000 copies but also caused a reduction of
scratching of the aluminum film during electro erosion.

      Disclosed anonymously.