Patent ID: 6071677
Filing Date: 2000-06-06
Classification: B23K,B41J,Y10S

Abstract:
A manufacturing method of a liquid jet recording head comprising: a first board in which a plurality of discharge energy generating elements for discharge ink are formed; and a second board in which a plurality of discharge ports for discharge the ink and a plurality of channel grooves each communicating with each of said discharge ports are worked and formed, a common liquid chamber for temporarily holding the ink which is supplied to said channel grooves and said discharge ports is provided, and projections which are deformed when said first and second boards are joined are further formed on a joint surface with said first board, whereby the liquid jet recording head is manufactured by joining said first and second boards in a form such that said discharge energy generating elements and said channel grooves correspond to each other, said projections being provided at a discharge port side of said channel grooves and between said channel grooves,wherein when said channel grooves and said projections of said second board are laser worked by irradiating a laser beam through a laser mask having working patterns corresponding to those shapes, the workpiece is sequentially worked so that said channel grooves are formed after said projections are formed.