Patent ID: 7957683

Claim:
A color image forming apparatus comprising: a first development device for developing an electrostatic image on a first image bearing member with toner of a color other than black so as to form a toner image and collecting toner on the first image bearing member; an image receiving member to which the toner image is transferred; a first transfer roller which forms a nip portion for nipping the image receiving member with the first image bearing member to transfer the toner image on the first image bearing member electrostatically to the image receiving member; a second development device for developing an electrostatic image on a second image bearing member with black toner so as to form a toner image and collecting the toner on the second image bearing member; and a second transfer roller which forms a nip portion for nipping the image receiving member with the second image bearing member to transfer the toner image on the second image bearing member electrostatically to the image receiving member, wherein a center of rotation of the second transfer roller is on the downstream side relative to a center of rotation of the second image bearing member in a moving direction of the image receiving member, and wherein a distance along a path of the image receiving member between the center of rotation of the second image bearing member and the center of rotation of the second transfer roller is larger than a distance along the path of the image receiving member between a center of rotation of the first image bearing member and a center of rotation of the first transfer roller.