FLUID-JET PRINTHEAD AND METHOD OF FABRICATING FLUID-JET PRINTHEAD

摘要

PURPOSE: A fluid-jet printhead and its fabrication method are provided to the deflection of turn-on energy by precisely controlling the size and the flakiness of a resistive layer and to easily control the size of drops by reducing the deflection of resistors. CONSTITUTION: A fluid-jet printhead(200) has a substrate(10) having at least one layer defining a fluid chamber(100) for ejecting fluid. The printhead also includes a resistive layer(30) disposed between the fluid chamber and the substrate wherein the fluid chamber has a smooth planer surface between the fluid chamber and the substrate. The printhead has a conductive layer(40) disposed between the resistive layer and the substrate wherein the conductive layer and the resistive layer are in direct parallel contact. The conductive layer forms at least one void creating a planar resistor in the resistive layer. The planar resistor is aligned with the fluid chamber. Thereby, the injection efficiency is increased.