| 摘要 |
PROBLEM TO BE SOLVED: To ensure positional accuracy by moving the moving frame of a printing head by small force to enable the pressure contact of an electrical contact with a head reference member and to ensure the high positional accuracy of the printing head and the electrical contact and to facilitate the attachment and detachment of the printing head. SOLUTION: A moving frame 22 is provided above a rotary shaft and, at the same time, an electrical point 19 and a head reference member 20a are provided under the rotary shaft and a printing head is held by a head holder to be formed into a horizontal U-shape and the center point of the length of a head reference hole is allowed to be present on the tangent of a circle drawn centering around the rotary shaft of a base frame 21 by handle operation. |
