An image forming apparatus includes an image forming section which
transfers toner onto a latent image due to a difference of electrostatic
potential to form a toner image, a transfer section which transfers the
toner image onto a recording material directly or via an intermediate
transfer body, a fixing section which passes the recording material
carrying the toner image between a fixing rotation body and a
pressurizing member contacted and pressed each other, and heats and
pressurizes to fix the toner image, and a paper dust amount measuring
section which measures an amount of paper dust adhering to the recording
material. The image forming section forms an image pattern with high
toner area coverage at a predetermined interval based on the measured
amount of paper dust, and the fixing section fixes the image pattern with
the high toner area coverage transferred onto a recording material.