公开(公告)号：EP3889192A1

公开(公告)日：2021-10-06

申请号：EP20208771.4

申请日：2020-11-19

申请人： Xerox Corporation

发明人： VEREGIN, Richard P. N. ,  NOSELLA, Kimberly D. ,  DUQUE, Rosa M. ,  DAVIS, Melanie Lynn ,  KURCEBA, David R. ,  VONG, Cuong

IPC分类号： C08F220/18 ,  C08K3/22

摘要： A method for assessing polymeric additive content A in a polymeric particle mixture may comprise determining a concentration B of a metal cation in a polymeric particle mixture comprising parent polymeric particles and polymeric additive particles, wherein the metal cation is selected from alkali earth metals and alkali metals, other than sodium (Na), and the metal cation is capable of forming a water-soluble base; determining a concentration C of the metal cation in the parent polymeric particles; determining a concentration D of the metal cation in the polymeric additive particles; and calculating a polymeric additive content A using formula A = (B - C) / D.

公开(公告)号：EP4152098A1

公开(公告)日：2023-03-22

申请号：EP22192994.6

申请日：2022-08-30

申请人： Xerox Corporation

发明人： VEREGIN, Richard Philip Nelson ,  NOSELLA, Kimberly D. ,  DIAZ, Raysa Rodriguez ,  DAVIS, Melanie Lynn ,  VONG, Cuong

IPC分类号： G03G9/097

摘要： Disclosed herein is a toner composition, developer and additive for a toner composition. The toner composition includes toner particles comprising at least one resin, an optional colorant, an optional wax, and a polymeric toner additive on at least a portion of an external surface of the toner particles. The polymeric toner additive includes a polymeric resin comprising a cross-linked fluorinated acrylic monomer, a cross-linkable monomer containing two or more vinyl groups at 8 wt% to 40 wt% of the polymeric resin, and optionally a charge control agent comprising nitrogen containing group at 0.1 wt% to 1.5 wt% of the polymeric resin.

公开(公告)号：EP3715953A1

公开(公告)日：2020-09-30

申请号：EP20165334.2

申请日：2020-03-24

申请人： Xerox Corporation

发明人： VEREGIN, Richard P.N. ,  SRISKANDHA, Shivanthi Easwari ,  KURCEBA, David R. ,  DAVIS, Melanie Lynn ,  VONG, Cuong

IPC分类号： G03G9/097 ,  G03G9/087

摘要： A toner including toner particles comprising at least one resin, in combination with an optional colorant, and an optional wax; and a copolymer toner additive on at least a portion of an external surface of the toner particles, the copolymer toner additive comprising a first monomer having a high carbon to oxygen ratio of from about 3 to about 8; and a second monomer comprising two or more vinyl groups, wherein the second monomer is present in the copolymer in an amount of from greater than about 8 percent by weight to about 60 percent by weight, based on the weight of the copolymer; wherein the copolymer toner additive has a volume average particle diameter of from about 20 nanometers to less than about 70 nanometers. An emulsion aggregation toner process including the copolymer as a toner surface additive.