An electrophotographic image forming apparatus including first and second photosensitive bodies, first and second exposing units to form electrostatic latent images on the first and second photosensitive bodies respectively charged to a uniform electric potential, a first developing unit to develop an...http://www.google.de/patents/US8032061?utm_source=gb-gplus-sharePatent US8032061 - Electrophotographic image forming apparatus having transparent toner and white toner
