Patent ID: 7662530

Claim:
An image forming apparatus comprising: a latent electrostatic image bearing member; a latent electrostatic image forming unit configured to form a latent electrostatic image on the latent electrostatic image bearing member; a developing unit configured to develop the latent electrostatic image using a toner to form a toner image; and a transferring unit configured to transfer the toner image on a recording medium, wherein a surface of the toner is coated with an external additive comprising fine particles having an average particle diameter Da of 120 nm to 300 nm; an average percentage of an area where the external additive is attached relative to the surface area of one toner particle is 5% to 90%; and a value obtained by dividing an average F of non-electrostatic adhesion between the toner and the latent electrostatic image bearing member by a product of volume average particle diameter of the toner Dt and average particle diameter of the external additive Da, [F/(Dt×Da)] is 7.5×10 4 N/m 2 or less.