Ink jet printhead and its manufacturing process

[Solution means] An ink-jet print head (130), It has one or more jet modules (131), and each module is equipped with the distribution channel (138) for the ink of two or more jet nozzles (139), the jet cell (137) for nozzles, and a cell (137) which adjoined the silicon chip (34) and the modular front part (133). A module is equipped with the distribution channel (149) which adjoins a front part (133) and carries out fluid 連通 at a distribution channel (138), and the nozzle layer (152) united with the related chip (134), and a jet nozzle (139) is made in parallel with a front part. The support part (132) which forms the supply duct (143) for ink which a module is attached and carries out fluid 連通 of the head (130) with a distribution channel (138), In order to guarantee fluid seal between a supply duct (143) and a jet cell (139), it has further a support part and the seal means (150) established between modules. [Selection figure] Fig. 9