Use of fluorescing toners for imaging

A method for providing a toner image, the method comprising:

• forming a latent image,
• developing the latent image with fluorescing dry toner particles to form a developed fluorescing toner image,
• transferring the developed fluorescing toner image comprising the fluorescing dry toner particles to a receiver material to form a transferred fluorescing toner image, and
• fixing the transferred fluorescing toner image to the receiver material,
• wherein each fluorescing dry toner particle comprises a polymeric binder phase comprising a non-fluorescing binder polymer, and a polymeric fluorescing colorant dispersed within the non-fluorescing binder polymer,
• wherein:
• (a) the polymeric fluorescing colorant comprises a fluorescing moiety that is covalently attached to a colorant polymer that is the same or different than the non-fluorescing binder polymer, but which polymeric fluorescing colorant is blendable with the non-fluorescing binder polymer to form a homogeneous polymeric binder matrix, and
• (b) the polymeric fluorescing colorant is present in an amount of at least 1 weight % and up to and including 40 weight %, based on the total fluorescing dry toner particle weight.

A method for preparing fluorescing dry toner particles, the method comprising:

• dry blending non-fluorescing polymer resin particles with a polymeric fluorescing colorant, and optionally one or more of a charge control agent, wax, lubricant, fuser release aid, or non-fluorescing colorant to form a fluorescing dry blend,
• melt extruding the fluorescing dry blend to form an extruded fluorescing composition, and
• breaking up the extruded fluorescing composition into fluorescing dry toner particles, each fluorescing dry toner particle comprising a polymeric binder phase comprising a non-fluorescing binder polymer, and a polymeric fluorescing colorant dispersed within the non-fluorescing binder polymer,
• wherein:
• (a) the polymeric fluorescing colorant comprises a fluorescing moiety that is covalently attached to a colorant polymer that is the same or different than the non-fluorescing binder polymer, but which polymeric fluorescing colorant is blendable with the non-fluorescing binder polymer to form a homogeneous polymeric binder matrix, and
• (b) the polymeric fluorescing colorant is present in an amount of at least 1 weight % and up to and including 40 weight %, based on the total fluorescing dry toner particle weight.