Gicleeprinting is a form ofinkjet printing, andthe chemicals used depend on the color of the ink. For example, a soluble red ink may be composed of red dye eosin, and a blue would contain triphenylmethane. The exact composition of chemicals will also differ depending on use of organic and inorganic materials.
Giclee printing is also referred to as Iris printing, and itis used predominantly to produce high quality images, especially used for digital printing, as mentioned by HamburgKennedy Photographs.
Pigments are an important factor in inkjet chemical make-up. The majority of printing inks use pigment over dye: pigments are insoluble to water, while dyes are not, as stated by the Royal Society of Chemistry.The make-up of an ink alsovaries basedon its viscosity: high viscosity, or thicker inks are infused with polymeric agents. Additionally, inkjet printing may require the addition of reagents to stimulate the appearance of certain colors, according to the AmericanChemicalSociety Publications. Furthermore, white inks generally contain a combination of titanium dioxide, rutile and anatase, while organic inks are colored by the use of clays and powderedmetals, and are desired for the lack of toxicity, as noted by the Royal Society of Chemistry. The online chemistry resources outlines ink composition and development dating back to 2500 B.C., as well as recent advancements.