Modification of heater and bubble clamping behavior in off-shooting inkjet ejector

Without the well control of bubbles with symmetrical appearance from the ejector, it would lead to skew trajectory, even the shooting failure. From the practical off-shooting inkjet ejector packaged in a commercial cartridge, jetting failure was easily found in this off shooting design. This paper reported a novel method for modifying an off shooting inkjet ejector by using of Simulation software (Ansys) to simulate the designed ring-type heater and by using of thermoscope (IR scope) to verify ring-type heater performance. The interactive relationship among heater shape effect, process of the ring-type heater and electrode, and symmetrical bubble formation was clarified in this paper.