| 摘要 |
<p>The device is a droplet on demand recording device including a recording head (3) comprising a substantially linear array (55) of nozzles (33) for the emission of droplets of ink, the array of nozzles extending in a first direction (7), each nozzle communicating with a pressure chamber (25) associated with actuator means (11) for emitting an ink droplet only when a predetermined signal is applied to the actuator means. The nozzles are formed by a plurality of first through-holes (33) in a nozzle plate (27) that forms a wall of the pressure chambers. Transportation means (57, 59) transport a record carrier (61) in such a manner that a surface of the record carrier faces the nozzles and moves in a second direction (63) transverse to the first direction (7). A deflection plate (8) is provided on a face (30) of the nozzle plate (27) that is directed away from the pressure chambers (25), the deflection plate comprising a number of second through-holes (48) equal to the number of first through-holes (33). Each second through-hole (48) has a diameter (D) that exceeds the diameter (d) of the corresponding first through-hole (33) and the deflection plate (8) is movable relative to the nozzle plate (27) in a direction parallel to the first direction (7). Driving means (9) impart to the deflection plate (8) an oscillating motion parallel to the first direction (7), the oscillating motion being centered around a rest position in which the corresponding first (33) and second (48) through-holes are substantially aligned. A control unit (71) activates the recording head (3) in such a manner that the emission of droplets of ink from each nozzle (33) is correlated with the momentary position of the deflection plate (8) relative to the nozzle plate (27).</p> |
