| http://www.w3.org/ns/prov#value | - Reference number 8 is used to denote second cover members, each of which can be produced in a plate formed of ceramics, such as zirconium or the like, by opening up communication holes 9 for connecting ink supply ports 20 (which will be described later) with the pressure generation chambers 4, and communication holes 10 for connecting nozzle openings 28 with the other ends of the pressure generati
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