A developer image that is not to be transferred onto the transfer material is formed only onto one image bearing member disposed downstream in the movement direction of the transfer material bearing and conveying member among {HEAD ~ the plurality} of {TAIL ~ image bearing members} 
A developer image that is not to be transferred onto the transfer material is formed only onto one image bearing member disposed downstream in the movement direction of the transfer material bearing and conveying member among { HEAD ~ the plurality } of { TAIL ~ image bearing members }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL