The transfer phenomenon of electrostatic latent images on electrophotography was investigated both expermentarily and theoretically.
The experiment was performed following the process shown by H. Bogdonoff and C. F. Carlson in the Japanese patent. Two sorts of electrofax paper were mainly used as original Plate. Successful results were obtained when the receiving surafaces were charged previously at the same polarity as the original plates and proper bias potentials were imposed. The transfer characteristics were obtaind by measuring the receiving surface potentials after being printed in contact with the original plates of various initial charging potentials.
These results were analysed and transfer mechanisms were considered.
It was clarified that in many cases the latent images on the original plates play the role that a grid does for the dissipation of charges on the receiving surfaces.