Nozzle plate assembly of micro injecting device and method for manufacturing the same

摘要

A nozzle plate assembly of micro injecting device and a method for manufacturing the same in which a master plate which defines a nozzle region is dipped into an electrolyte in which NiH2.SO3.H, NiCl2, H3BO3 and C12H25SO4.NaS and deionized water are mixed by a predetermined ratio. Then, current having a predetermined density is applied several times, to thereby form a nozzle plate having a plurality of nozzles. The nozzle plate so formed has different roughness at inner and outer surfaces, to thereby eliminate crosstalk and generation of air bubbles in the ink feed channel.