Toner, developer including the toner, and developing device and image forming apparatus using the toner

A toner comprising:

• toner particles comprising:
• a binder resin comprising at least one polyester resin comprising an inorganic tin (II) compound having no Sn—C bond;
• a wax having a melting point from 60 to 100° C.;
• a colorant;
• and
• an external additive comprising a hydrophobized particulate inorganic material having a median diameter greater than 80 nm and less than 300 nm;
• wherein
• an amount of the wax is in the toner is from 1 to 8 parts by weight per 100 parts by weight of the toner particles,
• a ratio (W/R) of a peak (W) of the wax observed in the vicinity of 3000 cm−1 of a FTIR-ATR spectrum to a peak (R) of the binder resin in the vicinity of 830 cm−1 is from 0.05 to 0.20,
• the at least one polyester resin was obtained by a reaction catalyzed by the inorganic tin (II) compound, and
• the inorganic tin (II) compound is selected from the group consisting of tin (II) carboxylates and tin (II) alkoxylates.