Abstract: The invention relates to an aqueous yellow inkjet ink composition for use in ink jet printers comprising an aqueous carrier, a yellow pigment, a polymeric dispersant, a surfactant, and a specific cosolvent mixture comprising a C2-C8 terminal alkanediol or a mixture thereof, a polyol/polyalkylene oxide condensate, a cyclic amide and its derivative, and a trihydric alcohol. The yellow inkjet ink demonstrates excellent stability, good maintenance characteristics and high heater reliability in permanent and semi permanent printheads. The ink also reduced post print paper curl without sacrificing print quality.

Abstract: The invention relates to an aqueous yellow inkjet ink composition for use in ink jet printers comprising an aqueous carrier, a yellow pigment, a polymeric dispersant, a surfactant, and a specific cosolvent mixture comprising a C2-C8 terminal alkanediol or a mixture thereof, a polyol/polyalkylene oxide condensate, a cyclic amide and its derivative, and a trihydric alcohol. The yellow inkjet ink demonstrates excellent stability, good maintenance characteristics and high heater reliability in permanent and semi permanent printheads. The ink also reduced post print paper curl without sacrificing print quality.

Abstract: An inkjet ink of exceptional overall color characteristics having about 4% by weight Direct Yellow 132 in acid form, about 1% by weight Acid Yellow 17 in acid form in water, typically also having a humectant, a penetrant, and other generally known additives.

Abstract: An ink jet printer includes a carrier for mounting a first printhead and a second printhead. A first ink reservoir is coupled in fluid communication with the first printhead, and contains a chromatic dye-based ink. A second ink reservoir is coupled in fluid communication with the second printhead, and contains a chromatic pigment-based ink.

Abstract: The present invention provides inkjet inks, dye sets, and inkjet ink sets for use in inkjet printing methods. The inkjet inks and inkjet ink sets of the present invention can provide excellent photo-realistic print quality while achieving a high level of lightfastness. The inkjet ink comprises: a xanthene dye, and a metallized azo dye having the Formula (I). The inkjet ink set comprises: a magenta dye set comprising a xanthene dye, and a metallized azo dye having the Formula (I), at least one yellow ink comprising at least one yellow dye, and at least one cyan ink comprising at least one cyan dye. The present invention also provides a method of printing using the inkjet ink set of the present invention.