| 摘要 |
PROBLEM TO BE SOLVED: To provide a full color electrophotographic device without a deterioration in image quality by quickly retreating a developer at the developing position of a developing roll, not for developing an electrostatic latent image of the next color on a photoreceptor belt. SOLUTION: As a material for a doctor blade 25d for making the thickness and concentration of the developer 25k of the developing roll 25a uniform, hard aluminium, etc., of a nonmagnetic material not having magnetizing work caused by work hardening at the time of forming are selected. The gap (g) between the developing roll 25a and the doctor blade 25d and the gap (G) between the developing roll 25a and the photoreceptor belt are set so as to obtain the relation of g>=G. |
