| 摘要 |
PURPOSE:To obtain an excellent color image by uniting an image carrier and a means which forms a visible image into a drum kit and making it attachable to and detachable from a device main body, and providing a driving means for the image carrier and a center decision plate. CONSTITUTION:The center decision plate 26 is fitted to an supported by a main body frame body 12 with semifinished nuts 27.... The rotary driving of a motor 21 is transmitted to a leaf spring 16 through a spindle 22, a rubber roller 20, and a driving shaft 14 and the leaf spring 16 is rotated together with driving plates 17.... Then the driving plates 17... are pressed against a part 18 to be driven which is provided to the flange 11 of a photosensitive drum 1 and frictional resistance operates between both, so the photosensitive drum 1 is rotated according to the frictional resistance. The power is transmitted from the motor 21 to the photosensitive drum 1 not through a gear, etc., so the photosensitive drum 1 is rotated at an accurate angular speed. Further, the rotation of a driving shaft 14 is accurately transmitted to the photosensitive drum 1 through a leaf spring 16 and a vivid color image having no pitch irregularity is obtained.
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