| 摘要 |
PROBLEM TO BE SOLVED: To shorten a time required from an established driving condition of a driven gear to a driving of the driven gear when the driven gear is driven by a power from a driving source at the time of establishment of driving conditions of the driven gear.SOLUTION: In a step S101, when a rotary speed N1 of a driven gear 16 is lower than a set speed N0, irrespective of non-establishment of a driven gear driving condition in steps S102 to S104, a driving gear preliminary moving action for rotating a rotary shaft 12 in a prescribed direction with a power force from a driving source 10 until a driving gear 14 is moved to a position where it is engaged with the driven gear 16. Then, after the driving gear preliminary moving motion, the rotary shaft 12 is rotated in a prescribed direction with a power force from the driving source 10 at the time of establishment of a driven gear driving condition, a driven gear driving operation is carried out in which the driven gear 16 is driven through an engagement between the driving gear 14 and the driven gear 16. |
