IMAGE FORMING APPARATUS

摘要

PROBLEM TO BE SOLVED: To provide an image forming apparatus for forming a stable image, even if performing repeated use for suppressing a friction amount of a photoreceptor, while securing electrification uniformity by considering hazard in the repeated use of the photoreceptor.

SOLUTION: An electrophotographic device comprises at least an electrification means, an exposure means, a development means, a transfer means and an electrophotographic photoreceptor. The electrification member used for the electrification means is a roller shaped electrification member arranged near to the photoreceptor. The electrophotographic photoreceptor is the photoreceptor performing electrification, by applying voltage superposing alternating-current voltage on direct-current voltage in the electrification member, under the condition that the number of charge particles during electrification in an electrification nip formed between the electrification member and the photoreceptor satisfy Equation (1) and the image forming apparatus has a mechanism for supplying an electrification hazard absorption agent to the surface of the photoreceptor. The Equation (1) is 3.0×1014≤ number of charge particles/photoreceptor circumferential length (number/m2mm)≤12.0×1014.

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