An image forming method comprising the step of transferring a toner image
while applying vibration by ultrasonic wave where in the toner particle
forming the toner image has a sea-island structure containing at least
two islands of a releasing agent, and the average of the nearest distance
between the islands is from approximately 100 nm to approximately 1060 nm
and the number of the island having the nearest wall distance of not less
than 1300 nm is not more than 10% of the whole number of the islands
contained in the toner particle.