| 摘要 |
PURPOSE:To activate the inner surface of a vessel body and to improve the wettability by approaching a corona discharge electrode to the inner surface of the vessel body, and treating the inner surface with the corona discharge. CONSTITUTION:Counter electrodes 54 and 55 are arranged on the outer periphery of a ink bottle 1, the corona discharge electrode 18 is arranged close to the central part of the inner bottom surface of the ink bottle 1, and the corona discharge electrode 18 is moved upward to treat the whole inner surface 6 with the corona discharge from the lower part toward the upper part. As a result, the whole inner surface 6 of the ink bottle 1 is surely and uniformly surface-treated with only a single vertical movement of the corona discharge electrode 18, hence the wettability can be improved. Accordingly, a large-scale device for the conventional plasma treatment can be dispensed with, and the cost of equipment can be reduced. |
