反应详情

1,1-diphenylhydrazine and N-ethylcarbazole-3-carbaldehyde were reacted in ethanol at room temperature to obtain N-ethylcarbazole-3-carbaldehyde diphenylhydrazone with melting point of 160.2°-160.5° C., and 60 parts of this hydrazone compound and 100 parts of a polyester (Vylon 200 by Toyobo Co., Ltd.) were dissolved in 450 parts of tetrahydrofuran to prepare a coating solution. Then selenium was vacuum evaporated on a 10 μm thick aluminum foil laminated on a 75 μm thick polyester film to form a charge generating layer with thickness of approximately 0.3 μm, and to this layer was applied the above-said coating solution by a film applicator and dried to form a 20 μm thick charge transporting layer. In this way, there was obtained a double-layer type electrophotographic plate.