Nozzles and methods of and apparatus for forming nozzles

Details Nozzles and methods of and apparatus for forming nozzles Nozzles and methods of and apparatus for forming nozzles

B - Operations, Transporting

41

J

B41J 2/14 (2006.01) B23K 26/06 (2006.01) B23K 26/38 (2006.01) B41J 2/16 (2006.01)

Patent

CA 2128875

Nozzles for an ink jet printer are formed by laser ablation in a nozzle plate (24) which has previously been bonded to the body of the printer (16). The laser beam is caused to converge at a point in front of the nozzle plate (24) so that a nozzle is formed which tapers toward the outlet. First and second beam masks (72, 74) are established in front of a focussing lens with the masks being respec- tively conjugate in the lens with the nozzle inlet and outlet, which are of different shape. The nozzle has a central land (218) which controls the ink meniscus and avoids the ejected drop receiving a sideways kick from the nozzle wall.

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