IMAGE FORMING APPARATUS AND IMAGE FORMING METHOD

The invention discloses an image forming apparatus and an image forming method. The image forming apparatus includes an electrophotographic photoreceptor that includes a photosensitive layer that contains a charge generation material, a charge transport material, and a binder resin; a charging unit; an electrostatic latent image forming unit; a developing unit; and a transfer unit. A charge amount deltaQ([mu]C/m ), which is accumulated in the photosensitive layer by exposure conducted by using the electrostatic latent image forming unit, per unit area of a surface of the electrophotographic photoreceptor, a charge potential VH(V) after the surface of the electrophotographic photoreceptor is charged by using the charging unit, and an exposure potential VL(V) of a portion of the surface of the electrophotographic photoreceptor exposed by using the electrostatic latent image forming unit satisfy the following formula: 20(V.m /[mu]C)