Inkjet recording system and recording apparatus

摘要

An inkjet recording system includes an inkjet recording head in which a part of wall face of a pressure chamber in which a nozzle is provided is formed of a piezoelectric element. Centerline average roughness Ra of the piezoelectric element is 0.05 to 2 mum, viscosity of the ink is 2.0 to 10.0 mPa.s, and the following expression (1) is satisfied; $\begin{array}{cc}\sqrt{\frac{r\mathrm{gamma}\cos \mathrm{theta}}{2\mathrm{eta}}}>=0.07& \left(1\right)\end{array}$ wherein r represents centerline average roughness (mum) of surface of piezoelectric element forming wall face of the pressure chamber, gamma represents surface tension (mN/m) of ink, eta represents viscosity of ink (mPa.s), and theta represents contact angle (degree) of ink with respect to piezoelectric element.