| http://www.w3.org/ns/prov#value | - In an image forming apparatus using an electrophotographic system such as a copying machine, a printer or the like, electric charges are uniformly formed on an image carrier such as a photoreceptor drum comprising of a photoconductive photoreceptor, an electrostatic latent image is formed by use of a laser beam modulated by an image signal, and, after then, the electrostatic latent image is develo
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