Patent ID: 8916317

Claim:
A process comprising: forming a first toner comprising at least one amorphous resin and at least one crystalline resin, an optional colorant, and an optional wax with at least one lanthanide coordination complex capable of emitting light on exposure to ultraviolet light at a wavelength of from about 10 nm to about 400 nm; forming at least one additional toner comprising at least one amorphous resin and at least one crystalline resin, an optional colorant, and an optional wax with at least one organic fluorescent agent capable of emitting light on exposure to ultraviolet light at a wavelength of from about 10 nm to about 400 nm; applying said first toner and the at least one additional toner to a substrate; and exposing the first toner and the at least one additional toner to light at a wavelength of from about 10 nm to about 400 nm, wherein exposing the first toner and the at least one additional toner to light at a wavelength of from about 10 nm to about 400 nm causes said first toner to emit a first color and the at least one additional toner to emit a color different from the first color, wherein the amounts of the first toner and the at least one additional toner applied to the substrate are adjusted to produce a desired color on exposure to light at a wavelength of from about 10 nm to about 400 nm, and wherein the amounts of the first toner and the at least one additional toner applied to the substrate are adjusted based on toner mass per unit area and halftoning.