Liquid ejection apparatus

Details Liquid ejection apparatus Liquid ejection apparatus

2006-03-14

2008-12-02

Stephens, Juanita D (Department: 2853)

Incremental printing of symbolic information

Ink jet

Fluid or fluid source handling means

C347S017000

Reexamination Certificate

active

07458664

ABSTRACT:
A liquid ejection apparatus for accurately supplying a plurality of nozzle rows with liquid having an adjustable hydrodynamic flow pressure to eject the liquid. Black ink, cyan ink, magenta ink, and yellow ink are supplied to first to fourth valve units through first to fourth branch passages. Each ink is then supplied to nozzle rows of a recording head after the hydrodynamic flow pressure of the ink is adjusted. The hydrodynamic flow pressure of the ink supplied to each nozzle row is prevented from fluctuating. The liquid ejection apparatus accurately ejects ink from each nozzle row and improves the reliability of performing recording on a recording sheet.

REFERENCES:
patent: 7168795 (2007-01-01), Shimizu
patent: 2004/0141023 (2004-07-01), Nakamura
patent: 2005/0007399 (2005-01-01), Harvey et al.
patent: 3604578 (1986-11-01), None
patent: 2000-246950 (2000-09-01), None
patent: 2004-142405 (2004-05-01), None
patent: 2004-249560 (2004-09-01), None

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