| 摘要 |
PURPOSE:To accurately perform the zero point adjustment and prevent ink from intruding into an ink key sliding part. CONSTITUTION:After zero-point adjustment is carried out by a zero-point adjusting ink key 22, a double-ink key 21 is moved straight back and forth by a gap adjusting device and a gap S can be adjusted with the adjusted zero- point gap S0 as the starting point. As only the zero-point adjusting ink key 22 is minutely moved, the zero-point gap can be accurately set. Grease can be injected into the sliding part of the double-ink key 21, that prevents ink from intruding into the sliding part and causes the double-ink key 21 to slide smoothly. A spring 31 presses the ink key on the bottom 3 of an ink bottle, so that the gap can be minimized. An ink intrusion preventive cover 29 attached on an ink main roller 2 side of each ink key also prevents the ink from intruding. |
