| 摘要 |
PROBLEM TO BE SOLVED: To provide a technique capable of achieving gear changeover efficiently.SOLUTION: A transmission mechanism transmitting power from a driving source comprises a movement gear and a plurality of connection gears. Each of the connection gears is connected to the corresponding drive object. The connection gears are arrayed in the axial direction. The movement gear can move along the array direction of the connection gears and can be individually engaged with the respective connection gears. The movement gear transmits the power from the driving source to the one connection gear in engagement. The connection gear drives the corresponding drive object on the basis of the power from the driving source. A main unit repeatedly executes rotation control processing for making the movement gear engaged with one of the connection gears move to the adjacent connection gear to be engaged with each other. The rotation control processing includes a step of rotating the movement gear with a rotation amount L1 in the normal rotation direction and a step of subsequently rotating the movement gear with a rotation amount L2 smaller than the rotation amount L1 in the reverse rotation direction.SELECTED DRAWING: Figure 5 |
