INK JET PRINT HEAD AND PRODUCTION OF FILTER ELEMENT

摘要

PROBLEM TO BE SOLVED: To provide a high strength filter in which handling and processing step can be carried out without causing any damage while preventing a mixed substance from entering into a channel. SOLUTION: A filter 14 employs a substance which can be fused by laser and removed and the filter 14 is bonded to the ink inlet side of the basic body while being aligned. A thin polymer film is fused and removed while penetrating a mask or a screen and a fine array of small holes is provided in an ink injecting region. The film is laminated to a channel base body to form a filter 14 covering one or more than one ink inlet 25. A substrate is diced therefrom and individual die print head modules, each comprising a filter 14 having one or more than one ink inlet 25, are formed.