Patent ID: 9639015
Date: 2017-05-02
CPC Classifications: G03G

Claim:
1. A toner composition comprising particles which comprise: a styrene/n-butylacrylate/β-carboxyethylacrylate copolymer resin having a ratio of styrene monomer to n-butylacrylate monomer to β-carboxyethylacrylate monomer in the copolymer resin from 69 to 90 parts styrene monomer, from 9 to 30 parts n-butylacrylate monomer, and from 1 to 10 parts β-carboxyethylacrylate monomer, wherein the weight average molecular weight of the copolymer resin is from 30,000 to 40,000 and wherein the number average molecular weight of the copolymer resin is from 8,000 to 15,000; a wax comprising a Fisher Tropsch wax and a paraffin wax, wherein the Fisher Tropsch wax is present in an amount of from 7% to 11% by weight based on the weight of the toner composition, and the paraffin wax is present in an amount of from 1.5% to 2.7% by weight based on the weight of the toner composition; and an optional colorant, wherein the toner particles have a circularity of from about 0.940 to about 0.999, wherein the toner particles contain wax domains having an aspect ratio of from about 1.4 to about 1.8, and wherein the toner particles contain wax domains having a roundness of from about 1.3 to about 1.6.