Abstract: In accordance with the present invention an inkjet composition is provided. The inkjet composition includes an anionic dye, at least one pigment, and an acidic fluid fixer, wherein the acidic fluid fixer includes at least one cationic component. Also provided are methods of printing images using an inkjet printer. Also provided are inkjet printers that include the inkjet composition.

Abstract: A fixer fluid for an inkjet ink set includes an aqueous vehicle, and a tri-alkyl-substituted amine-N-oxide. The fixer fluid also includes an acid, a cationic polyelectrolyte, or combinations of the acid and polyelectrolyte(s).

Abstract: A fixer fluid having reduced kogation. The fixer fluid includes at least one phosphate ester surfactant and at least one cationic polymer, wherein the fixer fluid is formulated so that the at least one phosphate ester surfactant does not precipitate with the at least one cationic polymer. The at least one phosphate ester surfactant may be an anionic phosphate ester surfactant or an amphoteric phosphate ester surfactant. If the at least one phosphate ester surfactant is an anionic phosphate ester surfactant, it may have greater than or equal to approximately 2 moles of ethylene oxide per mole of the phosphate ester surfactant. The present invention also relates to an inkjet ink having reduced kogation and a method of producing a fixer fluid having reduced kogation.

Abstract: Low corrosivity inkjet ink sets and fixer formulations, and methods of making an inkjet ink set with reduced corrosivity are disclosed herein. One exemplary fixer formulation includes water; a polycationic fixing agent; and a counterion, wherein the counterion is chosen to reduce the presence of halogen in the fixer.

Abstract: Compositions, systems, and methods for providing smudge resistant and durable ink-jet images having good optical density are provided. Specifically, a system for printing durable ink-jet ink images can comprise a first ink-jet pen containing an ink-jet ink and a second ink-jet pen containing a fixer composition. The ink-jet ink can comprise a first liquid vehicle and a colorant. The fixer composition can comprise a second liquid vehicle, and from 0.5 wt % to 5 wt % of a cationic copolymer of an epihalohydrin and an amine. Upon overprinting or underprinting the fixer composition with respect to the ink-jet ink on a substrate, a durable image can be formed.

Abstract: The present invention is drawn to a media sheets, including paper media sheets, which are effective for use in improving water fastness of inks, such as ink-jet inks. The media sheet can comprise a paper substrate, and a polydicyandiamide and a multivalent salt associated with the paper substrate. The polydicyandiamide and the multivalent salt are associated with the paper substrate prior to the ink-jet application.

Abstract: In accordance with the present invention an inkjet composition is provided. The inkjet composition includes an anionic dye, at least one pigment, and an acidic fluid fixer, wherein the acidic fluid fixer includes at least one cationic component. Also provided are methods of printing images using an inkjet printer. Also provided are inkjet printers that include the inkjet composition.

Abstract: An ink for use in inkjet printing has a colorant which has a precipitation rate in the presence of a predetermined fixer that is selected to have a value sufficiently low as to enable an increase in dot size of the colorant and produce a better color.

Abstract: The invention relates to dissolving an anionic dye/cationic polymer complex comprising the step of applying to the complex a water-soluble solvent having a dielectric constant from 20 to 43 at standard temperature and pressure.

Abstract: The invention relates to dissolving an anionic dye/cationic polymer complex comprising the step of applying to the complex a water-soluble solvent having a dielectric constant from 20 to 43 at standard temperature and pressure.

Abstract: A fixer fluid having reduced kogation. The fixer fluid includes at least one phosphate ester surfactant and at least one cationic polymer, wherein the fixer fluid is formulated so that the at least one phosphate ester surfactant does not precipitate with the at least one cationic polymer. The at least one phosphate ester surfactant may be an anionic phosphate ester surfactant or an amphoteric phosphate ester surfactant. If the at least one phosphate ester surfactant is an anionic phosphate ester surfactant, it may have greater than or equal to approximately 2 moles of ethylene oxide per mole of the phosphate ester surfactant. The present invention also relates to an inkjet ink having reduced kogation and a method of producing a fixer fluid having reduced kogation.

Abstract: Print media and methods of making print media are disclosed. One exemplary print medium, among others, includes a substrate having a fibrous component. In addition, a cationic guanidine polymer compound or salt thereof and a metallic salt are each disposed within the fibrous component of the substrate.

Abstract: The present invention includes a method of enhancing color space of dye-based ink. The print zone is heated while depositing fixer fluid and dye-based ink. In an embodiment, the print zone is heated to a temperature between about 45° C. and 85° C. The fixer fluid may be underprinted and/or overprinted. Printing may be effected using any desired print mode, including one-pass, two-pass or four-pass.

Abstract: A cationic polymeric fixer material comprising cationic polymers and at least one marker composition soluble in the fixer material and detectable under either ultraviolet or near IR light; as well as a method of inkjet printing using said fixer material and a method of detecting cationic polymeric fixer material on a printed media using said fixer material.

Abstract: Conductive additives, the aqueous inks and precoat agent compositions to which the additives are added, and the methods for using such conductive additives in the aqueous inks and precoat agent compositions in printing processes employing microwave or radiofrequency (RF) drying processes.

Abstract: In a four pen ink jet printer comprising cyan, yellow, magenta, and black inks, a clear liquid is applied to printed ink on a print medium via a fifth pen, thereby fixing the colorants, which in turn improves the durability of the printed ink. The clear fixer fluid comprises at least one organic acid and, optionally, a salt of at least one polymeric acid.

Abstract: The invention relates to dissolving an anionic dye/cationic polymer complex comprising the step of applying to the complex a water-soluble solvent having a dielectric constant from 20 to 43 at standard temperature and pressure.

Abstract: A cationic polymeric fixer material comprising cationic polymers and at least one marker composition soluble in the fixer material and detectable under either ultraviolet or near IR light; as well as a method of inkjet printing using said fixer material and a method of detecting cationic polymeric fixer material on a printed media using said fixer material.

Abstract: Conductive additives, the aqueous inks and precoat agent compositions to which the additives are added, and the methods for using such conductive additives in the aqueous inks and precoat agent compositions in printing processes employing microwave or radiofrequency (RF) drying processes.

Abstract: A system for printing images with improved waterfastness, and methods for printing an image having improved waterfastness are disclosed. The system comprises a first pen containing an ink composition, wherein the ink composition comprises effective amounts of an anionic dye, a polyamine, and an ink vehicle; a second pen containing an acidic fixer composition, wherein the acidic fixer composition comprises an effective amount of an acid and an ink-vehicle. The first pen and the second pen are configured to print the ink composition and the acidic fixer composition, respectively, onto a substrate such that the ink composition and the acidic fixer composition are in contact on the substrate. The amount of acid fixer utilized can be sufficient to protonate substantially all of the polyamines while not protonating the anionic dye, though a lesser or greater amount can also be used with success.