Fluorescent latexes with enhanced brightness
AssigneeXerox Corporation
InventorChunliang Lu
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Abstract
Fluorescent latexes are provided. In embodiments, a fluorescent latex comprises water and fluorescent agent-incorporated resin particles, the particles comprising a resin and a Förster Resonance Energy Transfer (FRET) pair comprising a fluorescent brightener having a fluorescence emission spectrum and a fluorescent dye having an absorption spectrum that overlaps with the fluorescence emission spectrum of the fluorescent brightener, wherein the fluorescent latex exhibits FRET under illumination with ultraviolet (UV) light. Fluorescent toners made from the fluorescent latexes are provided. Methods of making and using the fluorescent toners are also provided.
Claims14
A fluorescent latex comprising water and fluorescent agent-incorporated resin particles, the particles comprising a resin and a Förster Resonance Energy Transfer (FRET) pair comprising a fluorescent brightener having a fluorescence emission spectrum and a fluorescent dye having an absorption spectrum that overlaps with the fluorescence emission spectrum of the fluorescent brightener, wherein the fluorescent latex exhibits FRET under illumination with ultraviolet (UV) light, wherein the fluorescent brightener is Fluorescent Brightener 184.
A fluorescent latex comprising water and fluorescent agent-incorporated resin particles, the particles comprising a resin and a Förster Resonance Energy Transfer (FRET) pair comprising a fluorescent brightener having a fluorescence emission spectrum and a fluorescent dye having an absorption spectrum that overlaps with the fluorescence emission spectrum of the fluorescent brightener, wherein the fluorescent latex exhibits FRET under illumination with ultraviolet (UV) light, wherein the resin is a combination of two different types of resins, wherein the two different types of resins are two amorphous polyester resins, and wherein the two amorphous polyester resins are a poly(propoxylated bisphenol-co-terephthlate-fumarate-dodecenylsuccinate) and a poly(propoxylated-ethoxylated bisphenol-co-terephthalate-dodecenylsuccinate-trimellitic anhydride).
A fluorescent toner comprising fluorescent agent-incorporated resin particles, the particles comprising a resin and a FRET pair comprising a fluorescent brightener having a fluorescence emission spectrum and a fluorescent dye having an absorption spectrum that overlaps with the fluorescence emission spectrum of the fluorescent brightener, wherein the fluorescent toner exhibits FRET under illumination with UV light, wherein the fluorescent brightener is Fluorescent Brightener 184.
A fluorescent toner comprising fluorescent agent-incorporated resin particles, the particles comprising a resin and a FRET pair comprising a fluorescent brightener having a fluorescence emission spectrum and a fluorescent dye having an absorption spectrum that overlaps with the fluorescence emission spectrum of the fluorescent brightener, wherein the fluorescent toner exhibits FRET under illumination with UV light,
- the fluorescent toner further comprising a core comprising the fluorescent agent-incorporated resin particles;
- a crystalline polyester resin;
- and optionally, a wax;
- and a shell over the core, wherein the core further comprises two amorphous polyester resins, and wherein the two amorphous polyester resins are a poly(propoxylated bisphenol-co-terephthlate-fumarate-dodecenyl succinate) and a poly(propoxylated-ethoxylated bisphenol-co-terephthalate-dodecenylsuccinate-trimellitic anhydride).
Dependencies are inferred from the claim text.