Methods for using fluorescing yellow toner particles

A method for providing an enhanced yellow toner image, the method comprising:

• developing a latent image with fluorescing yellow polymeric toner particles to form a fluorescing yellow toner image on a first receiver material,
• transferring the fluorescing yellow toner image from the first receiver material to a final receiver material to form a transferred fluorescing yellow toner image, and
• fixing the transferred fluorescing yellow toner image to the final receiver material to form a fixed fluorescing yellow toner image,
• wherein each fluorescing yellow polymeric toner particle comprises a polymeric binder phase, and has distributed therein:
• one or more non-fluorescing yellow colorants having one or more absorbance peak wavelengths of at least 480 nm and up to and including 600 nm, and one or more fluorescing yellow colorants having one or more emission peak wavelengths of at least 480 nm and up to and including 600 nm,
• wherein the molar ratio of the one or more fluorescing yellow colorants to the one or more non-fluorescing yellow colorants is such that the covering power of the fluorescing yellow polymeric toner particle is greater than the covering power of non-fluorescing yellow polymeric toner particles having the same composition and size except that the one or more fluorescing yellow colorants are absent, and
• the molar ratio of the one or more fluorescing yellow colorants to the one or more non-fluorescing yellow colorants is such that the L* value of the one or more non-fluorescing yellow colorants, when present in a non-fluorescing yellow polymeric toner particle comprising the same polymeric binder phase, is increased by at least 50% in the presence of the one or more fluorescing yellow colorants in the non-fluorescing yellow polymeric toner particle.