US 11,952,479 B2
Fluorescent orange latex with enhanced brightness and toners made therefrom
Chunliang Lu, Webster, NY (US); Peter V Nguyen, Webster, NY (US); and Yu Qi, Penfield, NY (US)
Assigned to Xerox Corporation, Norwalk, CT (US)
Filed by Xerox Corporation, Norwalk, CT (US)
Filed on Aug. 18, 2022, as Appl. No. 17/820,656.
Application 17/820,656 is a division of application No. 16/822,438, filed on Mar. 18, 2020, granted, now 11,453,760.
Prior Publication US 2022/0403138 A1, Dec. 22, 2022
Int. Cl. C08K 5/00 (2006.01); C08K 5/1545 (2006.01); C08K 5/16 (2006.01); G03G 9/09 (2006.01); G03G 9/093 (2006.01)
CPC C08K 5/0041 (2013.01) [C08K 5/1545 (2013.01); C08K 5/16 (2013.01); G03G 9/0914 (2013.01); G03G 9/09335 (2013.01); G03G 9/09371 (2013.01); G03G 9/09392 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A fluorescent orange toner comprising toner particles, the toner particles comprising fluorescent agent-incorporated resin particles comprising a resin, Solvent Red 49 as a red fluorescent agent, and Solvent Yellow 98 as a yellow fluorescent agent, and a fluorescent brightener having a fluorescence emission spectrum that overlaps with an absorption spectrum of the yellow fluorescent agent, wherein the fluorescent agent-incorporated resin particles have a weight ratio of the Solvent Yellow 98 to the Solvent Red 49 in a range of from 20:1 to 0.5:1, and wherein the fluorescent orange toner exhibits Förster Resonance Energy Transfer (FRET) under illumination with light having a wavelength to excite the yellow fluorescent agent and FRET under illumination with ultraviolet light.