The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 02, 2008
Filed:
Mar. 14, 2006
Seiya Sato, Nagano-ken, JP;
Seiya Sato, Nagano-ken, JP;
Seiko Epson Corporation, Tokyo, JP;
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.