| 摘要 |
PURPOSE: Polymeric additive for improving print quality and permanence attribute in ink-jet inks is provided to improve various print qualities. CONSTITUTION: The one-part fixative comprises a polymer in a vehicle. The polymer is selected from the group consisting of vinyl-based polymers, condensation polymers, and copolymers thereof and the polymer has a glass transition temperature within a range of -50 to +100 deg.C, a melting temperature within a range of 30 to 150 deg.C, and a molecular weight (weight average basis) within a range of 3,000 to 100,000. The fixative is contained in a separate cartridge from the ink-jet ink print cartridge(s). The two-part fixative comprises: a reactive monomer or oligomer in a vehicle, the reactive monomer or oligomer selected from the group consisting of iso-cyanates and epoxy-terminated oligomers, and; at least one second component selected from the group consisting of polyols, polyvinyl alcohols, and base catalysts. The reactive monomer or oligomer is contained in a separate cartridge from the ink-jet ink print cartridge(s), while the second component(s) is contained in at least one ink-jet ink print cartridge. The reactive monomer or oligomer reacts with the second component(s) on the print medium to form a polymer, which has a glass transition temperature within a range of -20 to +50 deg.C and a melting temperature within a range of 30 to 100 deg.C. Enhancement of waterfastness, smearfastness, smudgefastness, and lightfastness is provided by use of the fixative solution.
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