Patent ID: 8735035

Claim:
An electrophotographic toner comprising a binder with two resins having different weight average molecular weights, a coloring agent, and a release agent, wherein: the toner comprises a ratio of sulfur strength [S] to iron strength [Fe] ([S]/[Fe]) measured by fluorescence x-ray in the toner is about 5.0×10 −4 to about 5.0×10 −2 ; the toner has, on a Gel Permeation Chromatography (GPC) chromatogram, a molecular weight distribution curve including a main peak in a region of about 8.0×10 3 g/mol to about 4.0×10 4 g/mol and a shoulder starting point in a region of equal to or greater than about 1.0×10 5 g/mol; the toner has a weight average molecular weight of about 5.0×10 4 g/mol to about 4.0×10 5 g/mol and a Z average molecular weight of about 1.0×10 5 g/mol to about 6.0×10 6 g/mol; an average circularity of the toner is about 0.960 to about 0.985; a coefficient of variation (C.V) of the average circularity of the toner is about 1.5% to about 3.3%; and the toner has a Brunauer, Emmett & Teller (BET) surface area of about 1.5 m 2 /g to about 3.5 m 2 /g.