Patent ID: 7587823
Filing Date: 2009-09-15
Classification: B41J,Y10T

Abstract:
1. A method of producing a pagewidth inkjet printhead, the method comprising: forming a substrate having defined therein a nozzle chamber operable to receive and store a fluid, the chamber fed at one side by an inlet passage; forming a nozzle plate in-situ on the substrate to define a nozzle opening on an opposite side of the nozzle chamber to the inlet passage, the structure having a thickness of substantially 2 microns to 2.5 microns; forming a heater element between the nozzle opening and the inlet passage, the heater element having two planar opposite sides, the heater element arranged to be in direct contact with the fluid in the nozzle chamber at the two planar opposite sides; and arranging the structures to extend across a pagewidth.