METHOD OF FORMING TAPERED ORIFICE ARRAYS IN FULLY ASSEMBLED INK JET PRINTHEADS IN A Fully Assembled Ink Jet Printhead

摘要

The present invention provides a method of forming an outwardly tapering bore (16) in a fully assembled ink jet printhead (10). The main body portion 12 and the cover plate 14 of the ink jet print head are mounted together to cover the ink delivery channel 22 in which the cover plate extends axially through the main body portion. First and second light beams capable of fluxing the material used to form the cover plate 14 are generated and extend through the cover plate and are tapered outwardly from the front side 14b of the cover plate to the back side 14a. The ink delivery channel 22 communicating with the aperture is formed by irradiating the front and back sides 14b of the cover plate with first and second light beams, respectively, at first and second angles, Thereby forming an outer tapered hole 16.