| 摘要 |
An inkjet comprises a chamber and a pressure control unit. The pressure control unit is connected to the chamber. The pressure control unit comprises an inlet, an outlet, an elastic mechanism, and seal block. The seal block is connected to the elastic mechanism, which moves the seal block between a first position and a second position via an elastic force. When the seal block is in the first position the seal block seals the inlet. When the seal block is in the second position, airflow passes the inlet, the pressure control unit, and the outlet into the chamber.
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