Patent ID: 8272717
Filing Date: 2012-09-25
Classification: B41J,Y10T

Abstract:
1. A printing device for jetting a liquid, comprising: a flow path body comprising a plurality of jetting flow paths, wherein the plurality of jetting flow paths includes a first jetting flow path and a second jetting flow path, each jetting flow path has a nozzle fluidically connected to a pumping chamber and the pumping chamber is fluidically connected to a fluid flow channel; a liquid in the plurality of jetting flow paths; a piezoelectric actuator associated with each jetting flow path, wherein the pumping chamber is adjacent to the piezoelectric actuator; and a feed substrate having a plurality of fluid inlets, wherein the piezoelectric actuator associated with the jetting flow path is between the flow path body and the feed substrate; and a driver configured to apply a voltage pulse to the piezoelectric actuator, the voltage pulse resulting in a break off time for the liquid exiting the nozzle, wherein: a first fluid flow channel of the first jetting flow path is fluidically connected to a first fluid inlet of the plurality of fluid inlets and a second fluid flow channel of the second jetting flow path is fluidically connected to a second fluid inlet of the plurality of fluid inlets, wherein the first jetting flow path is adjacent to the second jetting flow path and a fluidic travel distance (in mm) from the piezoelectric actuator of the first jetting flow path to the nozzle of the second jetting flow path is greater than a speed of sound (in m/s) in the liquid times the break off time (in microseconds) of a droplet of the fluid from the nozzle.