| 摘要 |
A gas purging unit and an inkjet head with the same. The gas purging unit has an exhaust chamber with a connecting hole to communicate with an ink passage and an exhaust hole that communicates with an outside. A gas permeable membrane is installed at the connecting hole. A negative pressure generator is provided inside the exhaust chamber to operate through an external force and generate a negative pressure with less pressure than a pressure inside the ink passage. A check valve is installed at the exhaust hole to open the exhaust hole when the external force operates the negative pressure generator and to close the exhaust hole by a force of the negative pressure after the external force is removed.
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