| 摘要 |
PURPOSE:To selectively enable to carry out an analog copying and a digital copying in the titled body by mounting an electric charge generating layer having sensitivity against the light of 700nm wavelength on a conductive substrate, and by mounting an electric charge transfer layer and the electric charge generating layer having sensitivity against the light of 400-700nm wavelength on said electric charge generating layer in this order. CONSTITUTION:A 1st. electric charge generating layer 3 is a layer having the sensitivity against the light of >=700nm wavelength, for example, the light of 700-800nm wavelength, and said electric charge generating substance is exemplified by a metal free phthalocyanine and a trisazopigment, etc. Especially, the electric charge generating substance used to said layer 2 is effectively exemplified by the trisazopigment shown by the formula. The electric charge transfer layer 4 mounted on said layer 3 is formed by dissolving the electric charge transfer substance such as polyvinyl carbazole and hydrazone compd., etc., into a resin capable of forming a film. The 2nd electric charge generating layer 5 is forming by dispersing the electric charge generating substance such as polyester, polystyrene and polysulfone etc., in the resin solution, followed by coating it on the layer 4. |
