| 摘要 |
PURPOSE:To always make a recording head press-contact in parallel with a roller, so that it is pressed under a constant pressure, by making a projecting part in the center of a pressure plate provided with a recording head contact with a rotation shaft, and turning the pressure plate by making said shaft a supporting point. CONSTITUTION:A supporting point 11 in the center part of a pressure plate 9 to which a recording head 1 has been fixed is made to contact with a shaft 10 and is held, and a roller 6 is pressed by a tension spring 4. In this case, holes 12 provided on both ends of the pressure plate 9 slide against the shaft 10 and control the pressure plate 9. According to this constitution, even if the roller 6 inclines, the pressure plate 9 rocks and inclines in the axial direction by a spring 4 through the supporting point 11 and the holes 12, the roller 6 and the head 1 are press-contacted in parallel, and it does not occur that one side rises. In this way, the roller 6 is pressed by contact pressure, and uniform recording is executed. |
