Patent ID: 6789866
Filing Date: 2004-09-14
Classification: B41J

Abstract:
A liquid jet head for letting liquid droplets to a medium and forming a dot image on said medium, said liquid jet head comprising:liquid jetting orifices from which liquid droplets are jetted: channels connected to said jet orifices, said channels being filled with liquid; and energy applying members, provided in said channels, for applying energy to the liquid in said channels on demand so that liquid droplets are jetted from said liquid jetting orifices wherein a cross sectional area of each of said liquid jetting orifices is within a range from 200 &mgr;m2 to 500 &mgr;m2, and wherein said energy applying members apply the energy to the liquid so that the liquid droplets, each of which has a flying velocity equal to or greater than 5.2 m/second, are jetted at a frequency which is within a range from 10 kHz to 40 kHz.