| 摘要 |
PURPOSE:To improve the effect of suppressing the ground stain of the copying paper, by installing a groove which divides the main pole fixedly arranged in the developing sleeve and is extended in the direction of the axis of the sleeve and locating the center of the groove in the opposite direction of the rotating direction of the sleeve against the 2nd normal. CONSTITUTION:In a developing sleeve 2 which is arranged so as to face a photorecepter 11 which moves in the direction shown by an arrow B, a main pole 3 and poles for carrying 3a, 3b, 3d, 3e, and 3f are fixedly arranged and the center E1 of a groove 13, which is located at a position almost facing to the photorecepter 11 and divided the main pole 3c, is fitted with a deviation in the opposite direction of the rotating direction of the sleeve against the 2nd normal which is the normal of the surface of the photorecepter passing through the center of rotation E2 of the sleeve 2. When such a constitution is applied, the ground stain of copying papers can be suppressed and, moreover, uniform adhesion of tonner on the latent image on the photorecepter 11 can be realized. |
