| 摘要 |
PROBLEM TO BE SOLVED: To provide an image forming device having an optimum gear train capable of improving the size, mass productivity, rotational accuracy and durability of the device. SOLUTION: The gear train transmitting the motive power of a motor 4 to respective gears 1, 3 and 2 directly connected to a heavy-load photoreceptor drum, a middle-load fixing roller and a light-load carrying roller through a pinion gear 5 is constituted of 1st, 2nd and 3rd gears 6, 7 and 8 being double gears and a 4th gear 9 being one gear, and the large gears 6a and 8a of the 1st and the 3rd gears are meshed with the pinion gear 5, the photoreceptor drum gear 1 and the large gear 7a of the 2nd gear 7 are meshed with the small gear 6b of the 1st gear 6, and further the carrying gear 2 is meshed with the small gear 7b of the 2nd gear 7. Then, the fixing roller gear 3 is meshed with the small gear 8b of the 3rd gear 8 through the 4th gear 9. |
