An image forming method, including forming an unfixed toner image on the surface of paper by an electrophotographic process using a developer containing a toner, and fixing the toner image on the paper, wherein a toner amount of the unfixed toner image is in the range of about 2.0 to 4.5 g/m.sup.2 for a toner image formed using a toner of one color, and in the range of about 8.0 to 18 g/m.sup.2 for a toner image formed by layering toners of four or more colors, and a bulk density of the toner is in the range of about 0.2 to 0.5 g/cm.sup.3.