Method of producing energy efficient printhead in-situ

Details Method of producing energy efficient printhead in-situ Method of producing energy efficient printhead in-situ

2007-02-15

2009-12-15

Tugbang, A. Dexter (Department: 3729)

Metal working

Method of mechanical manufacture

Fluid pattern dispersing device making, e.g., ink jet

C029S611000

Reexamination Certificate

active

07631427

ABSTRACT:
A method of producing a pagewidth inkjet printhead is disclosed. The method comprises 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; and forming a heater element between the nozzle opening and the inlet passage, the heater element arranged to be suspended within the nozzle chamber and to be in direct contact with the fluid in the nozzle chamber at both major faces thereof the heater element being a cantilever supported at one end by the nozzle chamber. The heater element is formed to require between substantially 120 nanojoules and substantially 400 nanojoules of heating energy to form said gas bubbles. The nozzle plate is formed in-situ on the substrate with a thickness of substantially between 2 to 2.5 microns.

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