Ink-jet printing apparatus
AssigneeFujitsu Limited
InventorsMitsuo Ozaki, Shino Tokuyo, Shigeharu Suzuki
Life of this patent
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Abstract
An ink-jet printing apparatus comprises a plurality of nozzles that eject ink, the nozzles being grouped into two or more nozzle groups; pressure chambers, each being provided to one of the nozzles; ink-ejection energy generators, each being provided for one of the pressure chambers; and a vibration controller configured to supply a non-ejecting vibration signal to the ink-ejection energy generators of each nozzle group at a different timing. The non-ejecting vibration signal causes the corresponding ink-ejection energy generator to produce energy so as not to cause the ink to eject from the nozzle, but cause the liquid surface of the ink to slightly vibrate in the associated nozzle.
Claims19
An ink-jet printing apparatus comprising:
- a plurality of nozzles configured to eject ink, the nozzles being grouped into two or more nozzle groups;
- pressure chambers, each being provided to one of the nozzles;
- ink-ejection energy generators, each being provided for one of the pressure chambers;
- and
- a vibration controller configured to supply a non-ejecting vibration signal to the ink-ejection energy generators of each nozzle group at a different timing, the non-ejecting vibration signal causing the corresponding ink-ejection energy generator to produce energy so as not to cause the ink to eject from the nozzle, but cause a liquid surface of the ink to slightly vibrate in the associated nozzle.
Dependencies are inferred from the claim text.