| 摘要 |
The device comprises a recording head (1) including: a chamber plate (7) having oppositely situated first and second faces (9, 11), pressure chambers (13) being formed as through holes extending between the first and second faces of the chamber plate, the pressure chambers being arranged in substantially parallel first and second rows (15, 17); a nozzle plate (39) attached to one of the faces of the chamber plate, said nozzle plate comprising a number of nozzle openings (37) corresponding to the number of pressure chambers (13), each nozzle opening communicating with one of the pressure chambers; a piezoelectric actuator element associated with each pressure chamber (13), said actuator element having an active direction and comprising at least one layer (23) of piezoelectric material and at least two electrode layers (25, 27) which are arranged such that the dimension of the actuator element in the active direction is varied upon application of an electric voltage between the electrode layers, the actuator element being arranged in cooperative relationship with the associated pressure chamber so that the pressure chamber changes its volume when the dimension of the actuator element in the active direction is varied. The recording head (1) further comprises ink supply means provided at the faces (9, 11) of the chamber plate (7), said ink supply means comprising four ducts (19) extending substantially parallel to the rows (15, 17) of pressure chambers (13), each pressure chamber communicating with the ink supply means via an ink supply channel (21). The first and second ducts (19) are provided at the first face (9) of the chamber plate (7) and the third and fourth ducts (19) are provided at the second face (11) of the chamber plate. The second, fourth, sixth, etc. pressure chambers (13) of the first row (15) communicate with the first duct, the second, fourth, sixth, etc. pressure chambers of the second row (17) communicate with the second duct, the first, third, fifth, etc. pressure chambers of the first row communicate with the third duct, and the first, third, fifth, etc. pressure chambers of the second row communicate with the fourth duct. As a result, full colour printing is possible with only one recording head (1).
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