Thermal printer and printing device

摘要

According to an aspect of the present invention, a thermal printer includes a housing in which a space is formed, printing means disposed in the housing, a cover disposed in the housing and which comes into contact with and separates from the housing when rotated, thereby opening and closing the space, urging means for urging the cover in a direction away from the housing, an engaging part which is disposed in the housing and which prevents the movement of the cover in a direction away from the housing when engaged with the cover, a pressed part which is disposed rotatably in the cover and which moves the engaging part when pressed, thereby releasing engagement between the cover and the engaging part, and elastic means arranged to urge the pressed part in a direction away from the engaging part.

主权项

1. A thermal printer comprising:
a printer main body; a cover fixed to the printer main body to rotate between closed and opened states; a platen roller disposed in the cover; a thermal head disposed in the printer main body, and arranged to face the platen roller in a closed state and to press the platen roller; a locking mechanism which engages and disengages the printer main body and the cover; and a linking member which links the thermal head with the locking mechanism, and retreats the thermal head from the platen roller with disengagement of the locking mechanism, wherein the thermal head is secured to a heat sink fixed to the printer main body to rotate around a second rotary shaft, wherein an end of the heat sink is lower than the second rotary shaft and comprises an attachment part that rotatably connects the end of the heat sink to the linking member with a clearance, and the heat sink is rotated via the linking member with rotation of the locking mechanism from an engaging position to a disengaging position based on a predetermined value defined by the clearance.