An adjustment pattern, which is composed of a reference pattern made of plural independent liquid droplets and a pattern to be measured made of plural independent liquid droplets ejected under an ejection condition different from the reference pattern, is formed on a water-repellent conveying belt. Then,...http://www.google.de/patents/US7992953?utm_source=gb-gplus-sharePatent US7992953 - Image forming apparatus and method of correcting deviation of shooting position
