Patent ID: 7583920
Filing Date: 2009-09-01
Classification: G03G

Abstract:
1. An electrostatographic single-pass multiple station printer for forming an image onto a printing medium, which comprises: (i) a plurality of toner image-printing electrostatographic stations comprising (ii) means for conveying a printing medium in succession past said stations in synchronism with the peripheral speed of said rotatable endless surface means; and (iii) register control means for controlling the operation of each of said stations in timed relationship thereby to obtain correct registering of the distinct toner images on the printing medium, wherein said register control means comprises wherein said register control means comprises a further printing medium advancement measurement means comprising a second encoder means for producing a second signal representative of printing medium displacement at a second position, said printing medium advancement measurement means being adapted to co-operate with said main encoder means for automatic adjustment of said first signal using said second signal.