A printing method comprising a step of printing images on a polypropylene film by an electrophotographic method using a toner for development of electrostatic images comprising a resin binder composition comprising a polyester-based resin and a polypropylene-based wax (W-1), in which the resin binder composition has an endothermic amount ratio ΔH CW/W of not less than 0.10 and not more than 0.80, the endothermic amount ratio ΔH CW/W being represented by the following formula: Endothermic Amount Ratio ΔH CW / W = Δ H CW / ΔH W wherein ΔH CW is an endothermic amount of a melting endothermic peak per 1 g of the polypropylene-based wax (W-1) as measured with respect to the resin binder composition; and ΔH W is an endothermic amount of a melting endothermic peak per 1 g of the polypropylene-based wax (W-1) as measured with respect to the polypropylene-based wax (W-1) singly, ΔH CW and ΔH W each representing an endothermic amount as measured at a temperature rise rate of 10°C/min determined according to the description using a differential scanning calorimeter; or in which the polypropylene-based wax (W-1) is dispersed in the polyester-based resin, a volume-median particle size (D 50) of the wax as a whole as measured by a dynamic light scattering method using a dispersion H prepared by the following Method 1 is not less than 1 μm and not more than 50 μm, a volume-median particle size (D 50) of a small particle size component of the wax as measured by a dynamic light scattering method according to the description using a dispersion S of the small particle size component of the wax which is prepared by the following Method 2 is not less than 20 nm and not more than 400 nm, and a content of the small particle size component of the wax is not less than 20% by mass and not more than 90% by mass on the basis of a total amount of the wax in the dispersion H, Method 1: 1 part by mass of the resin binder composition and 30 parts by mass of methyl ethyl ketone are stirred for 1 hour to prepare the dispersion H, and Method 2: after stirring the dispersion prepared by the aforementioned Method 1, the dispersion is allowed to stand for 24 hours to precipitate a large particle size component of the wax and separate a supernatant solution therefrom, thereby obtaining the dispersion S of the small particle size component of the wax; and wherein the polyester-based resin is in the form of a composite resin comprising a polyester-based resin segment and a vinyl-based resin segment comprising a constitutional unit derived from a vinyl-based monomer comprising an alkyl group having not less than 6 and not more than 22 carbon atoms in an amount of not less than 1% by mass and not more than 70% by mass. wherein ΔH CW is an endothermic amount of a melting endothermic peak per 1 g of the polypropylene-based wax (W-1) as measured with respect to the resin binder composition; and ΔH W is an endothermic amount of a melting endothermic peak per 1 g of the polypropylene-based wax (W-1) as measured with respect to the polypropylene-based wax (W-1) singly, ΔH CW and ΔH W each representing an endothermic amount as measured at a temperature rise rate of 10°C/min determined according to the description using a differential scanning calorimeter; or in which the polypropylene-based wax (W-1) is dispersed in the polyester-based resin, a volume-median particle size (D 50) of the wax as a whole as measured by a dynamic light scattering method using a dispersion H prepared by the following Method 1 is not less than 1 μm and not more than 50 μm, a volume-median particle size (D 50) of a small particle size component of the wax as measured by a dynamic light scattering method according to the description using a dispersion S of the small particle size component of the wax which is prepared by the following Method 2 is not less than 20 nm and not more than 400 nm, and a content of the small particle size component of the wax is not less than 20% by mass and not more than 90% by mass on the basis of a total amount of the wax in the dispersion H, Method 1: 1 part by mass of the resin binder composition and 30 parts by mass of methyl ethyl ketone are stirred for 1 hour to prepare the dispersion H, and Method 2: after stirring the dispersion prepared by the aforementioned Method 1, the dispersion is allowed to stand for 24 hours to precipitate a large particle size component of the wax and separate a supernatant solution therefrom, thereby obtaining the dispersion S of the small particle size component of the wax; and wherein the polyester-based resin is in the form of a composite resin comprising a polyester-based resin segment and a vinyl-based resin segment comprising a constitutional unit derived from a vinyl-based monomer comprising an alkyl group having not less than 6 and not more than 22 carbon atoms in an amount of not less than 1% by mass and not more than 70% by mass.