This study focused on the lightfastness properties of non-latex water-based inkjet inks and latex inkjet inks for conventional process colors, i.e., cyan, magenta, yellow, and black. Lightfastness is defined as the property of ink that describes the degree of resistance to fading when exposed to light. Lightfastness varies among inks based on their formulation. The degradation of inks caused by light happens when the light is absorbed by the pigments and reacts with the pigments and molecules in the printed substrate. This research evaluated the lightfastness degree of water-based inkjet inks vs. latex inkjet inks. The experiment used printed samples subjected to equal amounts of light, using established methodologies for accelerated aging. The data gathered from the prints included information on color shift as expressed by L*a*b* and ∆E00. Data analysis was performed to compare the before and after exposures of the two types of ink. It was concluded that the latex inkjet ink formulation improved the lightfastness properties when compared to water-based inkjet inks, particularly with magenta and cyan.

Library of Congress Subject Headings

Printing ink--Materials; Printing ink--Testing; Ink-jet printing

Publication Date


Document Type


Student Type


Degree Name

Print Media (MS)


Gregory D’Amico

Advisor/Committee Member

Bruce Leigh Myers


RIT – Main Campus

Plan Codes