| 摘要 |
PROBLEM TO BE SOLVED: To easily change the arrangement of a motor in accordance with the height of a grip part. SOLUTION: A gear train 16 long lengthwise for simultaneously driving a pair of developing rollers 13 and a raking claw 14 is arranged between the side surface 12a of a main body base part 12 on a grip part 6 side and a supporting plate 15 provided in parallel with the side surface 12a. A motor 18 fixed with a worm gear 21 as a shaft is provided on the outside of the plate 15, and the worm wheel 22 of the gear train 16 meshed with the gear 21 is provided at an intermediate part in the longitudinal direction of the gear train 16 so as to wholly project to the grip part 6 side from the plate 15. Since the gear 21 can be meshed with not only the upper side but also the lower side of the wheel 22, the height of the motor 18 is easily changed when the height of the grip part 6 is changed in accordance with the kind of a power source battery.
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