| 摘要 |
When a package in which a tank 1 is wrapped is opened, caused is an action of reversing vertical positions of an end face of the tank 1 having an ink supply portion 10, and an end face opposite to the foregoing end face. Along with this action, air existing inside the tank 1 ascends, and then is separated by air separating portions. Thus, a coloring material component inside the tank is stirred.
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