The image forming apparatus having: a rotatable first image bearing member
of bearing images; a rotatable second image bearing member of bearing
images; and a transferring device for transferring images respectively
born by the first image bearing member and the second image bearing
member onto a recording material; wherein a first mode with the first
image bearing member and the second image bearing member coming in
contact with the transferring device so that images are formed
respectively onto the first image bearing member and the second image
bearing member and a second mode with the first image bearing member and
the transferring device being set apart and the second image bearing
member coming in contact with the transferring device so that an image is
formed onto the second image bearing member are executable; and wherein,
at the second mode, the first image bearing member starts rotation from a
rotation stopped state and thereafter rotation stops. Thereby an image
bearing member can be restrained from contacting recording material or
transferring device to get deteriorated.