Patent ID: 7304099

Claim:
A colorless 5 th pen composition for use with four inkjet ink compositions wherein said 5 th pen composition comprises water, a co-solvent, and a fusible material consisting essentially of polymeric materials, wherein said fusible material is an emulsion polymer synthesized from components selected from the group consisting of: polyoxazolins, urethane/acrylic block or blended polymers, polycarbonates, polyvinylpyrrolidine, styrene-butadiene latexes, PEG-amine modified and/or diamine crosslinked polyene-maleic anhydride, ethylene maleic anhydride, octadecene-maleic anhydride, rosin-maleic anhydride polymers, and mixtures thereof, wherein said 5 th pen composition is within an inkiet pen and is configured for being jettable onto a substrate either before or after a color-containing ink as a layer, and wherein said 5 th pen composition is further configured for being heat fusible with said color-containing ink after jetting, thereby producing a permanent image on said substrate wherein said permanence is mensured as the amount of transference of color from said substrate when said color-containing ink on said substrate is subjected to mechanical abrasion and measured in units of milli-optical density of less than 50.