A toner including toner particles; and external additives including a
fatty acid metal salt having an average primary particle diameter of from
0.5 to 1.5 .mu.m; a positively chargeable particulate inorganic material;
and a negatively chargeable particulate inorganic material. An image
forming apparatus including a photoreceptor bearing an electrostatic
image, and a center feed developing device configured to develop the
electrostatic image with a developer including the toner to form a toner
image, and a transfer device configured to transfer the toner image onto
a receiving material preferably fed at a speed of from 500 to 1700 mm/s.
An image forming method including forming an electrostatic image,
developing the electrostatic image with the center feed developing device
using the toner to form a toner image, and transferring the toner image
onto a receiving material preferably fed at a speed of from 500 to 1700
mm/s.