Abstract
A new Two-Color Electrophotography with multilayer photoreceptor describing its principle and application has been studied.
The multilayer photoreceptor consists of two photoconductive layers, of which spectral property is different each other.
In the two color electrophotography, the electrostatic latent images corresponding to red and black area of an original are formed on the photoreceptor in opposite polarity by two charging steps and one exposing step.
Four types of practical processes, α-I, α-II, β and γ, have been proposed depending on the structure of multilayer photoreceptor and charging process.
The formation of latent images in the β-type utilising a simple capacitor model has been investigated.
According to the results, it was found important factors are capacitance ratio and the balance in photosensitivity between these two potoconductive layers in the multilayer photoreceptor.
