Printing device having structure capable of suppressing disengagement of bearing from holder despite application of external force to bearing

A printing device comprising:

• a platen roller having a rotational shaft extending in an axial direction, the rotational shaft having end portions in the axial direction;
• a pair of bearings each rotatably supporting each end portion of the rotational shaft, each of the pair of bearings comprising:
• a support portion having a generally hollow cylindrical shape and formed with a through-hole through which the rotational shaft extends, the support portion having an outer circumferential surface;
• and
• an engaging portion provided at the outer circumferential surface of the support portion;
• and
• a holder including a pair of fitting portions, each of the pair of bearings being fitted into each of the pair of fitting portions, each of the pair of fitting portions including:
• a receiving portion configured to contact the outer circumferential surface of the support portion to receive the support portion, the receiving portion having one end in a first direction crossing the axial direction, the receiving portion having a pair of distal ends facing each other to provide a gap therebetween at the one end of the receiving portion, the receiving portion having a generally C-shape as viewed in the axial direction;
• an opening portion serving as the gap defined between the pair of distal ends of the receiving portion;
• and
• an engagement portion positioned adjacent to the opening portion, the engaging portion being engaged with the engagement portion, whereby an expanding deformation of the opening portion in a second direction crossing the axial direction and the first direction can be restrained in a case where an external force directed in a direction toward the opening portion in the first direction is applied to the bearings.