US Patent 7477276 Thermal activation device, printing device, and printer

Thermal activation device, Printing device, and Printer for preventing an insufficient press-contact state of a sheet material relative to a heating means or a printing means, and suppressing an occurrence of thin spot on the sheet material. A thermal activation device including a head support member for supporting a thermal activation head, a support shaft for supporting the head support member in a rotatable manner in a direction allowing the thermal activation head to move toward and away from the platen roller, a platen spring for urging the head support member in a direction in which the thermal activation head is caused to press-contact with the platen roller, a shaft hole in which the support shaft is movably engaged in an urging direction by the platen spring, and an adjustment spring for regulating a position of the support shaft in the shaft hole and urging the head support member in the direction causing the thermal activation head to press-contact with the platen roller.