Patent ID: 7123869

Claim:
An image forming method in an image forming apparatus provided with a plurality of image forming units having image carrying bodies for carrying toner images of several colors, the image forming units being arranged along a transfer body for transferring recording medium, and a plurality of image transfer means each faces each of said image carrying body across said image transfer body pinching the image transfer body, wherein when cleaning off the toner remaining on said transfer body, a first speed control is done to allow the peripheral velocity of an image carrying body on which a toner image of which the spectroreflectivity at wavelength of 550 nm is the highest is to be formed to be different from the transfer velocity of said transfer body in a state a bias voltage is applied to the transfer means corresponding to said image carrying body on which a toner image of which the spectroreflectivity at wavelength of 550 nm is the highest is to be formed, the polarity of said bias voltage being opposite to that of a bias voltage that is applied when the image of which the spectroreflectivity at wavelength of 550 nm is the highest is transferred to said recording medium.