Inkjet recording device

Abstract

To provide an inkjet recording device equipped with an ink mist suction mechanism that can reliably recover ink remaining in the mist suction mechanism and perform stable mist suction. [Solution] The mist suction mechanism includes a recording head and an ink storage section that stores ink that has liquefied from ink mist sucked in from a mist suction port; an ink recovery port for recovering the ink stored in the ink storage section; an ink flow control member that switches between a first state that allows ink to flow in the recovery direction and a second state that prevents it by opening and closing a blocking member; and a negative pressure applying means for applying negative pressure to the blocking member. The ink flow control member sets the blocking member to the first state by opening it with negative pressure when the section from the ink recovery port to the ink flow control member is filled with ink, and sets the blocking member to the second state by closing it regardless of the negative pressure when the section from the ink recovery port to the ink flow control member is not filled with ink.

Claims

1. In an inkjet recording apparatus that records by ejecting ink from a recording head onto a recording medium that flows relative to a recording head having multiple nozzles for ejecting ink arranged over a predetermined width, A mist suction mechanism having a mist suction port for sucking up ink mist generated by ink ejection by the recording head, and an ink storage section for storing the ink that has liquefied from the ink mist sucked up from the mist suction port, It has an ink recovery mechanism for recovering the ink stored in the ink storage section, The aforementioned ink recovery mechanism is An ink recovery member having an ink recovery port for recovering ink stored in the ink storage section, and an ink flow path for causing the ink recovered from the ink recovery port to flow in the recovery direction, An ink flow control member switches between a first state that allows ink to flow in the recovery direction and a second state that prevents ink from flowing in the recovery direction by opening and closing a blocking member positioned at a predetermined location in the ink flow path. The ink recovery member includes an ink discharge section through which ink that has flowed in the recovery direction in the ink flow path is discharged, The system includes a negative pressure applying means for applying negative pressure to the closing member to open it from a closed state, The ink flow control member is characterized in that, when ink is filled in the section of the ink flow path from the ink recovery port to the ink flow control member, the blocking member is opened by negative pressure, thereby setting the ink flow path to the first state, and when the section is not filled with ink, the blocking member is closed regardless of negative pressure, thereby setting the ink flow path to the second state.

2. The ink flow control member increases the negative pressure in the ink flow path by filling part or all of the section with ink, thereby isolating the ink flow path from the atmosphere and bringing it to the first state. The inkjet recording apparatus according to claim 1, characterized in that the second state is achieved by connecting the aforementioned section to the atmosphere.

3. Multiple mist suction mechanisms are arranged, and each of the multiple mist suction mechanisms is arranged in accordance with the ink recovery mechanism. The inkjet recording apparatus according to claim 1 or 2, characterized in that each of the ink discharge sections in the plurality of mist suction mechanisms is connected and in communication with each other.

4. The mist suction mechanism is equipped with a mist outlet for discharging ink mist sucked in from the mist suction port, and the inkjet recording device is connected to each of the mist outlets of the plurality of mist suction mechanisms, and further includes a concentrating member that has a space communicating with each of the plurality of mist outlets, and collects and exhausts the air that flows in from each of the plurality of mist outlets. The inkjet recording apparatus according to claim 3, further comprising the aggregation member, an ink recovery mechanism for recovering ink that has liquefied from ink mist floating in the space.

5. The inkjet recording apparatus according to claim 1 or 2, characterized in that the mist suction mechanism is provided with a liquefaction promoting unit that promotes the liquefaction of the suctioned ink mist, and the ink liquefied by the liquefaction promoting unit is stored in the ink storage unit.

6. The inkjet recording apparatus according to claim 5, characterized in that the liquefaction promoting unit is a plate-shaped member that contacts the ink mist sucked in from the mist suction port.

7. The ink flow control member has an elastic member that has elasticity for pressing the blocking member against an inlet opening into which ink recovered from the ink recovery port flows, and the ink flow control member switches to the first state when the blocking member is pressed by the ink in the opposite direction to the pressing direction by the elastic member, as described in claim 1 or 2.

8. The ink flow control member is characterized in that, in the second state, prevents the ink from flowing in the ink channel in the direction opposite to the recovery direction, as described in claim 1 or 2 of the ink recording apparatus.

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