Polymeric charge enhancing additives

Details Polymeric charge enhancing additives Polymeric charge enhancing additives

G - Physics

03

G

96/52

G03G 9/08 (2006.01) C08L 35/00 (2006.01) G03G 9/087 (2006.01)

Patent

CA 1247434

ABSTRACT This invention is directed to positively charged developer composi- tions and toner compositions, the toner composition being comprised of resin particles, pigment particles, and from about 0.1 to about 10 percent by weight of the toner particles of a polymeric charge enhancing additive selected from the group consisting of those additives of the following formulas: Image and Image wherein a and b are percentage numbers equaling 100, a being from about 20 weight percent to about 99 weight percent, and b being from about 80 weight percent to about 1 weight percent, n is a repeating number ranging from about 3 to about 300, Z is an oxygen atom, c is the number zero or 1, Y is an alkyl or aromatic radical, Z' is selected from the group consisting of aliphatic, aromatic, and heterocyclic radicals, R1, R2, R3 and R4 are independently selected from alkyl radicals containing from about 1 to about 22 carbon atoms, X is an anion, a' is a number of from about 50 to about 500, R1' is hydrogen or an alkyl radical containing from 1 to abut 22 carbon atoms; as well as methods of developing electrostatographic images utilizing such compositions.

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