| 摘要 |
PROBLEM TO BE SOLVED: To rapidly damp vibration of an endless belt due to a load by a vibration preventing member at the time when a stepping motor is started. SOLUTION: In a belt type driving gear for transmitting turning force of a stepping motor 4 to a drive shaft 6 by an endless belt 9 and driving a load of carriages 1, 2 or the like by turning force of the drive shaft 6, a vibration preventing member 17 abutted to the endless belt 9 is provided. In this way, a vibration of the endless belt 9 due to a load is rapidly damped by the vibration preventing member 17 when the stepping motor 4 is started.
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