Intermittent drive device

An intermittent drive device comprising:

• a tooth-missing gear in which a tooth row is partially missing;
• an output gear;
• an input gear that is provided with a first tooth row that receives a driving force and does not come into contact with the tooth-missing gear and a second tooth row that transmits the driving force to the tooth-missing gear and that is arranged at a position apart from the output gear in a rotation axis direction;
• a shaft joint member that moves in the rotation axis direction to a first position where the driving force of the input gear is transmitted to the output gear and a second position where the transmission is released;
• a tooth-missing gear control mechanism that starts rotation of the tooth-missing gear from a state in which the driving force from the input gear is released and meshes with the input gear;
• and
• a switching mechanism that switches a position of the shaft joint member in the rotation axis direction between the first position and the second position.