Nozzle plates for ink jet printers and like devices
AssigneeCambridge Display Technology Limited
InventorErnest O. K. Daddey
Life of this patent
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Abstract
Nozzle plate for a drop on demand printer having a coating formed of fused particles of fluorinated ethylene propylene copolymer. The coating, which offers a low surface energy and good resistance to wear is formed on a laser ablatable material and has an average thickness of at least 200 nm but not greater than 600 nm.
Claims16
A nozzle plate blank for a device for ejecting a liquid in a form of droplets through a nozzle, said blank comprising laser-ablatable material, and said blank having on one face thereof a liquid-repellant layer comprising fused solid particles of fluorinated ethylene propylene copolymer (FEP), said layer being at least 200 nm but not greater than 600 nm average thickness.
A method of forming a nozzle plate for a device for ejecting a liquid in a form of droplets through a nozzle, said method comprising steps of:
- providing a nozzle plate blank comprising laser-ablatable material, said blank having on one face thereof a liquid-repellant layer comprising fused solid particles of fluorinated ethylene propylene copolymer (FEP), said layer being at least 200 nm but not greater than 600 nm average thickness, and
- forming a nozzle hole or holes in said coated blank by exposing the coated face of said blank to a laser beam.
Dependencies are inferred from the claim text.