US 12,405,547 B2
Toner comprising reactive charge control agent
Jordan A. Frank, Rochester, NY (US); Genggeng Qi, Webster, NY (US); Chieh-Min Cheng, Rochester, NY (US); Michael F. Zona, Hickory, NC (US); and Elizabeth K. Priebe, Rochester, NY (US)
Assigned to Xerox Corporation, Norwalk, CT (US)
Filed by Xerox Corporation, Norwalk, CT (US)
Filed on Mar. 17, 2022, as Appl. No. 17/697,809.
Prior Publication US 2023/0296997 A1, Sep. 21, 2023
Int. Cl. G03G 9/097 (2006.01); G03G 9/093 (2006.01)
CPC G03G 9/09775 (2013.01) [G03G 9/09791 (2013.01); G03G 9/093 (2013.01)] 19 Claims
 
1. An emulsion aggregation toner comprising:
a toner particle comprising at least one resin; an optional colorant; an optional wax; and
a reactive charge control agent disposed on a surface of the toner particle;
wherein the reactive charge control agent comprises at least one positive charging compound, wherein the at least one positive charging compound comprises a member selected from the group consisting of an amine compound having at least 3 carbon atoms, an ammonium compound having at least 3 carbon atoms, a phosphonium compound having at least 3 carbon atoms, a boronium compound having at least 3 carbon atoms, and combinations thereof; at least one reactive anchoring compound, wherein the at least one reactive anchoring compound comprises a member selected the group consisting of amino, epoxy, carboxylic, hydroxyl, silanol, cyanide, anhydride, aldehyde, ketone, vinyl, and combinations thereof; and wherein the charge control agent optionally further comprises a negative charging compound, wherein the negative charging compound comprises a member selected from the group consisting of aromatic carboxylic acid, silanol, phenol, pyranone, furanone, and combinations thereof;
wherein the reactive charge control agent comprises a member of the group consisting of phenylsilane, amino-silsesquioxane, aminopropyl-silsesquioxane, and combinations thereof.