| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a drive force transmission device capable of improving accuracy of a center distance, suppressing an increase in a weight, a production cost and an arrangement space, and transmitting the drive force at a high accuracy. <P>SOLUTION: The drive force transmission device includes: a mold gear shaft 42Y; a developing idler gear 44Y provided so as to be rotatable and movable about the mold gear shaft 42Y; and a developing drive motor 52 for driving the developing idler gear 44Y. The mold gear shaft 42Y includes: a flange part 62 for regulating the movement in the axial direction; a protrusion part 63 provided on the flange part 62 so as to come into contact with an assembly 112; and a mounting part 64 mounted on a driving face plate 41. The drive force transmission device is configured that either of a thrust force F<SB POS="POST">1</SB>that the protrusion part 63 presses the assembly 112 and a thrust force F<SB POS="POST">2</SB>that the mold gear shaft 42Y presses the driving surface plate 41 is applied according to a rotating direction when the mold gear shaft 42Y rotates. <P>COPYRIGHT: (C)2013,JPO&INPIT |
