Thermal printer and printing method in thermal printer

摘要

The thermal printer detects the position of the thermal medium, the thermal head (7) that heats and prints the thermal medium, the platen roller (8) that conveys the thermal medium between the thermal head (7), and the position of the thermal medium. A first detection unit (21), a second detection unit (22) that is disposed downstream of the first detection unit (21) in the conveyance direction of the thermal medium and detects the position of the thermal medium; A reference time for conveying the thermal medium between the control unit that controls at least one of the head (7) and the platen roller (8), and the first detection unit (21) and the second detection unit (22) is stored. Storage unit. The control unit prints the thermal head (7) based on the ratio between the passage time when the thermal medium passes between the first detection unit (21) and the second detection unit (22) and the reference time. Correction of at least one of timing and conveyance speed of the heat sensitive medium is performed.