A method for manufacturing a nozzle includes a step to change a spot diameter of a laser beam on a plate in which an orifice hole is formed. A device for manufacturing a nozzle includes a laser beam generating device for generating a laser beam, a work head comprising a lens to focus the laser beam on...http://www.google.de/patents/US5237148?utm_source=gb-gplus-sharePatent US5237148 - Device for manufacturing a nozzle and its manufacturing method
