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The gravure offset method has been developed toward an industrially viable printing technique for electronic circuitry. In order to obtain the optimum ink resin for printing lines of required thickness (>5 μm) of narrow lines (down to 25 μm), several ink resin systems have been assessed in previous studies by the authors. The best printed results were obtained with a novel ink using a hydrocarbon resin. This ink did not comply with the traditional ink transfer mechanism based on evaporation of the solvent, but with a postulated new "absorption mechanism.".
Electronics Packaging Manufacturing, IEEE Transactions on (Volume:25 , Issue: 4 )
Date of Publication: Oct 2002