Image recording apparatus

An image recording apparatus which jets an ink to record an image on a sheet-type recording medium, comprising:

• a first mounting portion and a second mounting portion each on which the recording medium are mounted;
• a first feeding roller which feeds the recording medium mounted on the first mounting portion;
• a second feeding roller which feeds the recording medium mounted on the second mounting portion;
• a recording head which jets the ink onto the recording medium fed by one of the first feeding roller and the second feeding roller;
• a carriage which holds the recording head to move in a direction orthogonal to a transporting direction of the recording medium;
• a first drive motor which reciprocates the carriage;
• a second drive motor which rotates in a normal direction and a reverse direction;
• and
• a drive transmission switching mechanism which transmits a driving force of the second drive motor to the first feeding roller and the second feeding roller, the drive transmission switching mechanism includes:
• a first gear of which a rotation axis is directed in a moving direction of the carriage and which is rotated by the second drive motor;
• a supporting shaft of which axial direction is directed in the moving direction;
• a second gear through which the supporting shaft is inserted, which is moved in the moving direction by the carriage, which changes its posture to a first posture and a second posture while being moved in the moving direction, and which engages with the first gear in the first and second postures;
• a third gear of which rotation axis is directed in the moving direction and which engages with the second gear in the first posture;
• a fourth gear of which rotation axis is directed in the moving direction and which engages with the second gear in the second posture;
• a first transmitting section which transmits a rotation of the third gear rotated by the second drive motor rotating in the normal direction to the first feeding roller to rotate the roller in a direction in which the recording medium is fed;
• and which prevents transmission of rotation of the third gear rotated by the second drive motor rotating in the reverse direction to the first feeding roller, under a condition that the second gear is in the first posture;
• and
• a second transmitting section which transmits a rotation of the fourth gear rotated by the second drive motor rotating in the reverse direction to the second feeding roller to rotate the roller in the direction in which the recording medium is fed;
• and which prevents transmission of rotation of the fourth gear rotated by the second drive motor rotating in the normal direction to the second feeding roller, under a condition that the second gear is in the second posture.