Printer

A printer comprising:

• a feeding shaft configured to rotatably hold a supply roll in which an ink ribbon is rolled;
• a rolling shaft configured to rotatably hold a collection roll in which the ink ribbon fed from the supply roll is rolled;
• a conveyor configured to convey a printing medium along the ink ribbon that moves from the supply roll toward the collection roll;
• a print head configured to print by bringing the ink ribbon into contact with the printing medium conveyed by the conveyor;
• and
• a turning force generation mechanism configured to generate a turning force in a direction in which the ink ribbon is rolled around the rolling shaft during back-feeding of moving the ink ribbon in a reverse direction by rotating the feeding shaft in a direction reverse to a feeding direction of the ink ribbon, the turning force generation mechanism including:
• a one-way bearing including a turning member that idles when the rolling shaft rotates in a rolling direction and turns integrally with the rolling shaft during the back-feeding in which the rolling shaft rotates in a direction reverse to the rolling direction, and
• an elastic member elastically deformed by turning of the turning member in the reverse direction such that the elastic member turns the turning member in the rolling direction due to a restoring force of the elastic member, wherein the elastic member includes a tension spring whose one end is fixed to the turning member, and the tension spring is stretched and rolled around the turning member as the turning member turns in the reverse direction.