| 摘要 |
The composite printhead ( 1 ) is made up of an active module ( 7 ), consisting of a thin plate ( 8 ) of silicon, on which a plurality of chambers ( 14 ) is produced, housing corresponding heating resistors ( 10 ), electrically connected through an interconnection network to corresponding external contact pads ( 37, 42 ), and of a support element ( 3 ) for the active module, in turn consisting of a portion of plate ( 22 ) of a rigid, insulating material, provided with an elongated slot shape, ink feeding duct ( 5 ), traversing the thickness of the support element ( 3 ). The active module ( 7 ) is built separately from the support element ( 3 ) and later mounted integrally upon the support element ( 3 ). Also mounted later to the support ( 3 ) is a frame ( 16 ) surrounding the active module ( 7 ) to provide hydraulic sealing. Finally the module ( 7 ) and the frame ( 16 ) are covered with a metallic or resin lamina ( 17 ), bearing an array of nozzles ( 18 ) aligned with and facing the ejection chambers ( 14 ).
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