Prevention of optical density loss in inkjet printing

The present invention relates to an inkjet ink comprising: a) colorant; b) a polymeric binder having an acid number below 200 selected from the group consisting of a styrene-acrylic polymeric binder, an acrylic polymeric binder, an anionic polyurethane binder and combinations thereof; c) water dispe...

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Bibliographische Detailangaben
Hauptverfasser:	SCHMID CHRISTIAN, SARKISIAN GEORGE M, WEBSTER GRANT A
Format:	Patent
Sprache:	eng
Schlagworte:	ADHESIVES APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVEREDIN A SINGLE OTHER SUBCLASS CHEMICAL PAINT OR INK REMOVERS CHEMISTRY COATING COMPOSITIONS, e.g. PAINTS, VARNISHES ORLACQUERS COMPOSITIONS BASED THEREON COMPOSITIONS OF MACROMOLECULAR COMPOUNDS CORRECTING FLUIDS CORRECTION OF TYPOGRAPHICAL ERRORS DYES FILLING PASTES i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME INKS LINING MACHINES MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS MEASURING MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR METALLURGY MISCELLANEOUS APPLICATIONS OF MATERIALS MISCELLANEOUS COMPOSITIONS NATURAL RESINS ORGANIC MACROMOLECULAR COMPOUNDS PAINTS PASTES OR SOLIDS FOR COLOURING OR PRINTING PERFORMING OPERATIONS PHYSICS POLISHES PRINTING PROCESSES FOR APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TOSURFACES, IN GENERAL SELECTIVE PRINTING MECHANISMS SPRAYING OR ATOMISING IN GENERAL STAMPS TARIFF METERING APPARATUS TESTING THEIR PREPARATION OR CHEMICAL WORKING-UP TRANSPORTING TYPEWRITERS USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS USE OF MATERIALS THEREFOR WOODSTAINS
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Beschreibung
Zusammenfassung:	The present invention relates to an inkjet ink comprising: a) colorant; b) a polymeric binder having an acid number below 200 selected from the group consisting of a styrene-acrylic polymeric binder, an acrylic polymeric binder, an anionic polyurethane binder and combinations thereof; c) water dispersible surfactant; and d) a solvent which does not dissolve an acidified form of the binder, the solvent having a vapor pressure less than 0.1 mm at 25° C. The invention further relates to methods of making using the ink, printing systems and ink sets which use this ink.