| 摘要 |
PURPOSE:To realize an ink jet printing head having a large number of ink emitting nozzles two-dimensionally arranged thereto in high density and to obtain an ink jet printer enabling high speed printing in a recording apparatus allowing an ink liquid droplet to fly toward a recording medium by pulse heating. CONSTITUTION:A driving LSI chip 9 has a heating resistor row consisting of a Cr-Si-SiO alloy membrane resistor 16 and Ni membrane conductors 17,18, a common ink groove 11 and a plurality of the connecting ink holes 10 communicating with the common ink groove 11 and, on this LSI chip 9, the orifice row 2 corresponding to the heating resistor row in relation of 1:1 and individual ink passages 13 allowing the respective orifices of the orifice row 2 to communicate with the common ink groove 11 are provided. A mounting frame 3 having the ink groove 11 communicating with the connecting ink holes 10 is mounted on the rear surface of the driving LSI chip 9. |
