Printer

A printer, comprising:

• a conveyor configured to convey a printing medium;
• a printing device configured to print an image on the printing medium conveyed by the conveyor;
• a roller provided downstream of the printing device in a conveying direction in which the printing medium is conveyed;
• an opposed roller opposed to the roller;
• a motor;
• a coupling mechanism configured to power-transmittably couple the motor and the roller to each other and rotate the roller in a first direction during driving of the motor, the first direction being a rotational direction for conveying the printing medium downstream in the conveying direction;
• a moving mechanism configured to move the roller between (i) a first position at which the roller is power-transmittably coupled to the motor by the coupling mechanism, and the printing medium is nipped by the roller and the opposed roller and (ii) a second position at which the roller is power-transmittably coupled to the motor by the coupling mechanism and separated from the printing medium;
• and
• a first guide member formed with one of a guide groove and a guide hole and configured to guide a rotation shaft of the roller, the one of the guide groove and the guide hole extends such that a position of the rotation shaft of the roller moves from a third position when the roller is positioned at the first position to a fourth position, which is spaced apart from the third position, when the roller is positioned at the second position.