AN ACOUSTIC INK JET PRINTHEAD DESIGN AND METHOD OF OPERATION UTILIZING FLOWING COOLANT AND AN EMISSION FLUID

摘要

A droplet emitter with an array of droplet emitting devices constructed such that one flowing liquid is used to create the droplets while a second low acousti c impedance liquid can be used to both make the transfer of acoustic energy to the first liquid more efficient and help maintain a uniform temperature of the droplet emitter array. Both the emission fluid and the low acoustic impedance fluid can be circulated throug h the droplet emitter to allow for excess heat generated by control electronic to be transferred to the flowing. This prevents for instance excess heat build-up within the droplet emitter and allows for higher more accurate droplet emission.