| http://www.w3.org/ns/prov#value | - Incidentally, there is a case that, when the ink is depleted in the ink absorbing body 22 (foam material), the air, together with the ink, passes through the filter 23, thereby causing an air bubble in the supplying tube 4, that is, the ink supplying path 3, as shown in FIGS. 23( a) and 23(b).
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