Is a
Patent attributes
Patent Jurisdiction
Patent Number
Date of Patent
September 29, 2009
Patent Application Number
11905708
Date Filed
October 3, 2007
Patent Primary Examiner
Patent abstract
An inkjet recording system that discharges pigment ink from a liquid droplet discharge head in which a part of wall surface of pressure chamber is formed of a piezoelectric element, wherein average surface inclination Δa (mrad) of surface of the piezoelectric element forming a part of wall surface of the pressure chamber satisfies Δa≦1050, and average volumetric particle diameter D (nm) of pigment contained in the ink satisfies 80≦D≦200. Preferably, the arithmetic average surface inclination Δa and the average volumetric particle diameter D of the pigment satisfy the following formula (1):(1/D)×cos2(Δa/1000)>0.003 (1).
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