Ink-jet print head, driving method thereof and ink-jet...

Details Ink-jet print head, driving method thereof and ink-jet... Ink-jet print head, driving method thereof and ink-jet...

B - Operations, Transporting

41

J

B41J 2/14 (2006.01) B41J 2/045 (2006.01) B41J 2/06 (2006.01) B41J 2/145 (2006.01)

Patent

CA 2267921

In an ink-jet print head, a plurality of sets of pressure chambers and supply paths are provided to be connected to one another in series between a nozzle and an ink pool. Piezoelectric transducers are arranged to be opposite to the respective pressure chambers. A driving circuit therefor sequentially applies voltage waveforms to the piezoelectric transducers starting from a piezoelectric transducer provided in the first pressure chamber connected to the ink pool to piezoelectric transducers of the nozzle-side adjacent pressure chambers. At this moment, the piezoelectric transducers provided in the nozzle-side pressure chambers are applied with voltage waveforms delayed in phase by 1/2 of natural periods of pressure waves in the pressure chambers.

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