An image forming method, comprising the steps of: charging uniformly a surface of an organic photoreceptor while rotating the organic photoreceptor; exposing the charged surface of the photoreceptor with a light beam having a wavelength in the range of 350 nm to 500 nm in a main scanning direction to form a dot-shaped electrostatic latent image on the photoreceptor; and developing the dot-shaped electrostatic latent image with toner to form a dot-shaped toner image on the photoreceptor so as to satisfy the following formulas: 1.1.ltoreq.B/A.ltoreq.1.5 and 10.ltoreq.A.ltoreq.50, where A is the length (.mu.m) of an exposed dot of the dot-shaped electrostatic latent image in the main scanning direction, and B is the length (.mu.m) of a toner dot of the dot-shaped toner image in the main scanning direction.