Printer

A printer comprising:

• a platen roller configured to rotate around a rotation center extending in an axis direction to convey a medium in a conveyance direction intersecting the axis direction;
• a substrate having a front surface facing the platen roller in a facing direction intersecting the axis direction and the conveyance direction, a conveyance path of the medium being interposed between the front surface and the platen roller;
• a heating element provided on the front surface of the substrate and configured to come into contact with the medium pressed against the front surface by the platen roller and to perform printing on the medium;
• a first defining part provided on a further upstream side than the heating element in the conveyance direction, and configured to define the conveyance path and to come into contact with the medium at a position further than the front surface in a first facing direction being directed from the front surface toward the platen roller in the facing direction;
• and
• a second defining part provided on a further downstream side than the substrate in the conveyance direction, configured to define the conveyance path, and having a contact surface facing toward the first facing direction and extending from a second facing direction, which is opposite to the first facing direction, toward the first facing direction as being directed from an upstream side toward a downstream side in the conveyance direction, the medium coming into contact with the contact surface,
• wherein an upstream end of the contact surface in the conveyance direction is located in the second facing direction further than the front surface,
• a downstream end of the contact surface in the conveyance direction is located in the first facing direction further than the front surface,
• a discharge angle of a third virtual line with respect to the front surface is smaller than an introduction angle of a second virtual line with respect to the front surface, the third virtual line passing through an intersection of a first virtual line and the front surface, and through the downstream end of the contact surface in the conveyance direction, the first virtual line passing through the rotation center and extending in the facing direction, the second virtual line passing through the intersection and a downstream end of the first defining part in the conveyance direction, and
• the heating element is located on a further downstream side than the intersection in the conveyance direction.