Abstract: The present invention is drawn to a media sheet, comprising a substrate and a porous ink-receiving layer deposited on the substrate. The porous ink-receiving layer can comprise inorganic metal or semi-metal oxide particulates bound by a polymeric binder, and the porous ink-receiving layer can further include an effective amount of a sulfur-containing compound that interacts with ozone upon exposure thereto.

Abstract: A print medium having increased resistance to gasfade. An inhibitor comprising a sulfur-containing polymer is incorporated into the print medium. The sulfur-containing polymer is poly(1,4-phenylene sulfide) or poly(1,3-phenylene sulfide). The inhibitor is present in at least a surface of the print medium and may be present in the print medium in a concentration from approximately 0.25% by weight per cm2 of the print medium to approximately 30% by weight per cm2 of the print medium. A method of forming the print medium is disclosed as is a method of producing a printed image having increased resistance to gasfade.

Abstract: Anti-bronzing agents are added to ink-jet inks to prevent bronzing of the inks when printed on various types of photographic media. The additive can include one or more anti-bronzing agents comprising certain planar aliphatic or planar aromatic ring structures. The planar ring-containing anti-bronzing agent can be present in an effective concentration to reduce bronzing of the ink-jet ink printed on the ink-receiving layer.

Abstract: A dye-based ink includes a dye and a solvent. The dye-based ink has a high print quality on plain paper. The dye-based ink may have a print quality similar to pigment-based inks. This may be particularly relevant for black inks.

Abstract: In accordance with embodiments of the present invention, an ink-jet ink can comprise a dye and a liquid vehicle carrying the dye. The liquid vehicle can include a sulfonated aromatic compound present in the ink-jet ink at an effective concentration to cause improvement of ozone fastness of said ink-jet ink.

Abstract: Two-part fixatives are provided in conjunction with overcoating at least one ink-jet ink printed on a print medium and comprise (1) at least one first reactive component comprising a reactive monomer or oligomer, the reactive species selected from the group consisting of iso-cyanates and epoxy-terminated oligomers, optionally in a vehicle, and (2) at least one second component selected from the group consisting of polyols and polyvinyl alcohols, plus one or more base catalysts, optionally in a vehicle. The two components and catalyst(s) are deposited on the print medium on which the ink-jet ink has been printed, and react to form a hydrophobic polymer overcoating the printed ink and having a glass transition temperature within a range of ?20° C. to +50° C. and a melting temperature within a range of 30° C. to 100° C.

Abstract: An electrostatically stabilized ink includes a dispersion which is electrostatically stabilized and comprises a pigment. The ink also includes an ionic amphiphile additive which has a charge center having an opposite charge from a charge center of the dispersion.

Abstract: A dye-based ink includes a dye and a solvent. The dye-based ink has a high print quality on plain paper. The dye-based ink may have a print quality similar to pigment-based inks. This may be particularly relevant for black inks.

Abstract: Anti-bronzing agents are added to ink-jet inks to prevent bronzing of the inks when printed on various types of media. The additive can be an amine anti-bronzing agent that is protonated when the ink-jet ink is printed on the print medium.

Abstract: A dye-based ink includes a dye and a solvent. The dye-based ink has a high print quality on plain paper. The dye-based ink may have a print quality similar to pigment-based inks. This may be particularly relevant for black inks.

Abstract: The present invention is drawn to a media sheet, comprising a substrate and a porous ink-receiving layer deposited on the substrate. The porous ink-receiving layer can comprise inorganic metal or semi-metal oxide particulates bound by a polymeric binder, and the porous ink-receiving layer can further include an effective amount of a sulfur-containing compound that interacts with ozone upon exposure thereto.

Abstract: An electrostatically stabilized ink includes a dispersion which is electrostatically stabilized and comprises a pigment. The ink also includes an ionic amphiphile additive which has a charge center having an opposite charge from a charge center of the dispersion.

Abstract: Two-part fixatives are provided in conjunction with overcoating at least one ink-jet ink printed on a print medium and comprise (1) at least one first reactive component comprising a reactive monomer or oligomer, the reactive species selected from the group consisting of iso-cyanates and epoxy-terminated oligomers, optionally in a vehicle, and (2) at least one second component selected from the group consisting of polyols and polyvinyl alcohols, plus one or more base catalysts, optionally in a vehicle. The two components and catalyst(s) are deposited on the print medium on which the ink-jet ink has been printed, and react to form a hydrophobic polymer overcoating the printed ink and having a glass transition temperature within a range of ?20° C. to +50° C. and a melting temperature within a range of 30° C. to 100° C.

Abstract: Two-part fixatives are provided in conjunction with overcoating at least one ink-jet ink printed on a print medium and comprise (1) at least one first reactive component comprising a reactive monomer or oligomer, the reactive species selected from the group consisting of iso-cyanates and epoxy-terminated oligomers, optionally in a vehicle, and (2) at least one second component selected from the group consisting of polyols and polyvinyl alcohols, plus one or more base catalysts, optionally in a vehicle. The two components and catalyst(s) are deposited on the print medium on which the ink-jet ink has been printed, and react to form a hydrophobic polymer overcoating the printed ink and having a glass transition temperature within a range of ?20° C. to +50° C. and a melting temperature within a range of 30° C. to 100° C.

Abstract: Shipping, handling, and testing fluids, ink dispensing systems, and the like are disclosed.

Abstract: In accordance with embodiments of the present invention, an ink-jet ink can comprise a metallized phthalocyanine dye and a liquid vehicle carrying the dye. The liquid vehicle can include an amine additive present in the ink-jet ink at an effective concentration to cause improvement of ozone fastness. The improvement can be determined by comparing the ozone fastness of the ink-jet ink with a control ink-jet ink that does not include the amine additive.

Abstract: The present invention is drawn to a media sheet, comprising a substrate and a porous ink-receiving layer deposited on the substrate. The porous ink-receiving layer can comprise inorganic metal or semi-metal oxide particulates bound by a polymeric binder, and the porous ink-receiving layer can further include an effective amount of a sulfur-containing compound that interacts with ozone upon exposure thereto.

Abstract: An electrostatically stabilized ink includes a dispersion which is electrostatically stabilized and comprises a pigment. The ink also includes an ionic amphiphile additive which has a charge center having an opposite charge from a charge center of the dispersion.

Abstract: In accordance with embodiments of the present invention, an ink-jet ink can comprise a liquid vehicle including a halophenol and a metallized dye. Alternatively, a system for printing images with improved ozone fastness can comprise a printing medium including an ink-receiving layer coated thereon, wherein the ink-receiving layer includes semi-metal oxide or metal oxide particulates, and an ink-jet ink configured for printing on printing medium. The ink-jet ink can comprise a liquid vehicle including a protonated phenol devoid of water solubilizing moieties, and a metallized dye.

Abstract: Anti-bronzing compounds are added to inkjet inks to prevent bronzing of the inks when printed on specialty quick-dry inkjet photographic media. These compounds inhibit bronzing by the proper buffering of the dyes relative to the media of interest.