| 摘要 |
PROBLEM TO BE SOLVED: To provide a side ring drop-preventing mechanism capable of preventing the side ring from dropping from an ink roller shaft by an impact of a drop or a collision. SOLUTION: A drop-preventing part preventing the drop of the ink roller shaft 1 is formed in the side ring 2. A latch part 23 having a circular arch surface having a smaller diameter than that of the ink roller shaft 1 as the drop-preventing part is compressively pushed against the peripheral surface of the ink roller shaft 1 when the side ring 2 is attached to the ink roller shaft 1 so that the latch part 23 bends in the direction reverse to the attachment direction of the side ring 2 and eats in the peripheral surface of the ink roller shaft 1. By this the latch part 23 gives strong drag force to the force from the outside in such a direction that the side ring 2 drops. COPYRIGHT: (C)2008,JPO&INPIT
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