Patent ID: 7014376
Filing Date: 2006-03-21
Classification: B41J

Abstract:
1. A thermal printer comprising: a platen roller whose shaft is rotatably supported to a main body case; a thermal head composed of a long line head and capable of contacting with or separating from the platen roller; and a pair of head supporting members for supporting both ends of the thermal head in a longitudinal direction; a rotation supporting portion configured to rotate the head supporting members supporting the thermal head; and at least one hole shape, elongated in a direction parallel to a direction in which the thermal head contacts or separates from the platen roller, in the rotation supporting portions of the pair of head supporting members; wherein inner surfaces of the elongated hole shaped rotation supporting portion facing each other in the longitudinal direction are formed in a circular arc shape whose center is a contact point of the thermal head and the platen roller.