| 摘要 |
PROBLEM TO BE SOLVED: To provide a printing machine capable of easily fixedly holding a moving member in a moving state. SOLUTION: The printing machine comprises a supporting arm 12 supported at its distal end so as to vertically move upward or downward. The machine also comprises a first link plate 30 oscillatorily supported to a body frame 1 side, a second link plate 31 oscillatorily supported to the arm 12 side, a coupling pin 32 projected from its end to couple the plates 30, 31, and a supporting lever 33 oscillatorily supported to the frame 1 side and having an engaging groove 33a detachably engaged with a projected end of the pin 32. In this case, the projected end of the pin 32 is contacted with a lower circumferential end of the lever 33 in association with downward movement of the distal end of the arm 12 to an upward direction to oscillate the lever 33. Thus, when the lever 33 is disposed in the groove 33a, the lever 33 is engaged with the groove 33a so that the arm 12 is held at an upper position. |
