Abstract
We have developed a new aqueous white ink for inkjet printers. For the white pigment, we have used hollow resin particles, an additive known for enhancing the whiteness of paper. Aqueous white ink containing hollow particles are safe for the environment, cause less sedimentation, and produce a more intense whiteness. Aqueous ink has a number of merits. First, it obviates the need for a ventilation duct for organic solvent during manufacturing process. Second, maintenance and printing do not require specific skills. Third, by mixing the ink with colors of subtle shades, it allows control of the hue of the whiteness. The new aqueous white ink will improve workflow of previewing and proofing of the printing materials. In addition, we found that both brightness and opaqueness are important for the whiteness quality of printed images on a clear film.
