Ink-jet head and ink-jet type recording apparatus

Details Ink-jet head and ink-jet type recording apparatus Ink-jet head and ink-jet type recording apparatus

2007-02-13

2007-02-13

Meier, Stephen (Department: 2853)

Incremental printing of symbolic information

Ink jet

Controller

C347S068000, C347S011000

Reexamination Certificate

active

10867867

ABSTRACT:
An ink-jet head has deformable ink chambers formed in a piezoelectric ceramic plate and communicating with nozzle openings for ejecting ink from the chambers in response to voltage drive waveforms applied to electrodes on side walls of the chambers. A drive waveform generator selectively applies to the electrodes a first drive waveform to eject an ink droplet from a nozzle opening or a second drive waveform for vibrating a meniscus of the ink to the extent that no ink droplet is ejected from the nozzle opening. By vibrating the ink meniscus, thickening of ink in the nozzle openings can be suppressed without a complicated voltage control.

REFERENCES:
patent: 4992808 (1991-02-01), Bartky et al.
patent: 5329293 (1994-07-01), Liker
patent: 6276773 (2001-08-01), Takizawa
patent: 0788882 (1998-03-01), None
patent: 0827838 (1999-08-01), None
patent: 1000742 (2000-09-01), None
patent: 1080896 (2001-03-01), None
patent: 1319511 (2003-06-01), None

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