Abstract: A liquid jet head has a nozzle plate with nozzle holes for ejecting a liquid. A wall portion surrounding the nozzle plate has an opening opposed to the nozzle holes. An opening and closing mechanism is configured in an open state to open the opening of the wall portion to expose the nozzle holes to an exterior of the head, and in a closed state to close the opening of the wall portion to form a closed space between the wall portion and the nozzle plate. A suction flow path has on one end side a suction port opening below the nozzle holes, and another end side is connected to a suction portion that evacuates the closed space to convert the closed space to a negative pressure chamber, thereby supplying the liquid to the nozzle holes. An atmosphere release portion switches between the open and closed states of the mechanism.

Abstract: Provided are a liquid jet head and a liquid jet recording apparatus which are capable of improving ability to collect excess liquid to prevent contamination with excess liquid and which are capable of stabilizing jetting of liquid after the liquid is filled. A liquid jet head includes a nozzle guard (24) for covering a periphery of a nozzle column (31c), the nozzle guard having a slit (24c) formed therein which is opposed to the nozzle column (31c), and a suction flow path (15) connected to a suction pump for sucking excess ink which leaks from the nozzle column (31c), in which inside space of the nozzle guard (24) is partitioned into first space (S1) and second space (S2), and the first space (S1) and the second space (S2) communicate with each other via a communication hole group (31f) in a nozzle plate (31).

Abstract: A liquid jet head including: a wall portion (24) which surrounds a jetting hole column and protrudes in the same direction as a direction of openings of jetting holes; a lid member (62) which may open and close an opening formed in the wall portion; an opening and closing mechanism (60) for forming closed space between the wall portion and a jetting body (23) and for, in an open state, exposing the jetting holes to the outside; an absorber (40) provided on a back surface of the lid member, for absorbing liquid which overflows from the jetting holes; a suction flow path (15) which has a suction port (15a) that is open to the closed space and which is connected to an outside suction device (8); and an atmosphere release portion (33) which is switchable between release of the closed space to the outside and interruption thereof.

Abstract: A liquid jet head including: an opening and closing mechanism for, in an open state, opening a wall portion release opening (24n) to expose nozzle holes to outside and for, in a closed state, closing the wall portion release opening to form closed space between a wall portion (24) and a nozzle plate (31); a suction flow path (15) having, on one end side thereof, a suction port (15a) which is open below a nozzle column while another end side thereof being connected to a suction pump (16) for, by sucking an inside of the closed space with the suction pump, causing the closed space to become a negative pressure chamber to supply ink I from an ink tank of the ink to the nozzle holes; and an atmosphere release flow path (33) which is switchable between communication of the closed space with the outside and interruption thereof.