This is the type of ink used in an inkjet printer. Most inkjet printers use liquid ink, whether it is pigment-based ink or dye-based ink. Pigment-based inks bond to the paper somewhat better than dye-based inks, reducing the likelihood that ink will bleed through the paper. Dye-based printer ink provides brighter colors in a wider range but bleed-through is more common. Waterproof ink also is a popular option, because most liquid inks will bleed if the final product becomes wet.