Abstract
The influence of electron-affinitive molecules (EAM) adsorbed on zinc oxide upon static electrification of electrophotographic layers (ZnO-Resin system) by corona discharge was studied. When EAM (maleic anhydride, phthalic anhydride, iodine or p-chloranil) was adsorbed, the initial surface potential (saturated surface charge in darkness) was depressed. Also photosensitivity, i. e., the ratio of dark to light decay rates was increased, though both the decay rates themselves decreased. These results were discussed comparing them with the results obtained from measurement of dark-and photo-conduction reported in the previous paper(1) . It was found that co-adsorption of EAM and an optical sensitizer (Rose Bengal) resulted in a quite effective sensitization in accord with the similar effect (hypersensitization effect) observed in photoconduction.
