| 摘要 |
PURPOSE:To eliminate the possibility of contaminating a printed circuit board even if there is ink leakage and to prevent the generation of trouble, by providing a head, a gutter or a deflection electrode on a base formed into a bathtub shape. CONSTITUTION:Ink is injected from a head 36 toward a gutter 25 and a part thereof is deflected between halfway deflection electrodes 43, 44 and allowed to impinge against the paper 14 on a platen 13 to perform predetermined printing on the paper 14. In this charge deflection type ink jet printing apparatus, the head 36, the gutter 25 and the deflection electrodes 43, 44 are provided on a base 11 formed into a bathtub shape. Even if the jet direction of the ink is bent and ink dripping or ink leakage is generated, the ink is dropped in the bathtub-shaped base 11. By this method, the possibility of generating trouble such that the ink is dropped on a carriage and contaminates, for example, a printed circuit board resulting in the generation of short-circuit can be eliminated.
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