Patent ID: 8431296

Claim:
An electrophotographic toner comprising: a latex, a colorant, a wax; and a metal salt including Si and FE, wherein the electrophotographic toner has about 3 to about 1,000 ppm each of Si and Fe, and having a molar ratio of Si/Fe of about 0.1 to about 5, wherein fusing properties of the electrophotographic toner satisfy Formulas 1 and 2: M ⁢ ⁢ F ⁢ ⁢ T A M ⁢ ⁢ F ⁢ ⁢ T B ≥ HOT A HOT B × 0.8 , Formula ⁢ ⁢ 1 M ⁢ ⁢ F ⁢ ⁢ T A M ⁢ ⁢ F ⁢ ⁢ T B × Gloss A ≥ HOT A HOT B × 4 , Formula ⁢ ⁢ 2 wherein MFT A is a minimum fusing temperature in a low-speed printing operation conducted at a rate of about 160 mm/sec, wherein MFT B is a minimum fusing temperature in a high-speed printing operation conducted at a rate of about 290 mm/sec, wherein HOT A is a hot offset temperature in a low-speed printing operation conducted at a rate of about 160 mm/sec, wherein HOT B is a hot offset temperature in a high-speed printing operation conducted at a rate of about 290 mm/sec, and wherein Gloss A is glossiness measured at an angle of about 60° at a fusing temperature of about 160° C. in a low-speed printing operation conducted at a rate of about 160 mm/sec.