| 摘要 |
A print head includes an ink chamber for storing ink therein, an ink propelling mechanism for propelling ink out of the ink chamber, and a temperature sensor for measuring an ink temperature in the ink chamber, an ink circulation route has a route including the ink chamber, and a print controller works at least along deactivation of an energy saving mode or upon power-on, in response to the temperature sensor having a measure of ink temperature lower than a prescribed value, for a pre-treatment to have the ink propelling mechanism make ink vibrating actions within degrees not to cause ink to be propelled out of the ink chamber, until the ink temperature becomes the prescribed value or more.
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