| 摘要 |
PROBLEM TO BE SOLVED: To provide an image forming device by which a bright image can be formed. SOLUTION: In the image forming device provided with a photoreceptor drum and an electrifying roll, electrifying range of the photoreceptor drum 1 by an electrifying roll 7 is the range where L/L' is 0.5 to 0.9 when the distance from the center in the longitudinal direction of the photoreceptor drum 1 to an edge part of the electrifying range is L and the whole length of the photoreceptor drum 1 is 2L'.
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