Patent ID: 9038268
Filing Date: 2015-05-26
Classification: B41J,Y10T

Abstract:
1. A manufacture method of an inkjet printing head, comprising: a step of preparing a substrate having a surface on which an element array, a plurality of first conductive lines, and a plurality of second conductive lines are provided, the element array being formed by arranging a plurality of electrothermal conversion elements for generating energy to eject, upon energization, ink through corresponding ejection openings, the plurality of first conductive lines being arranged in first regions, each of the first regions being positioned between adjacent electrothermal conversion elements, each of the first conductive lines being used to energize at least adjacent electrothermal conversion elements which are positioned at both sides of the corresponding first conductive line, and the plurality of second conductive lines being arranged in second regions, each of the second regions being positioned between adjacent electrothermal conversion elements that do not have the first region therebetween, the second conductive lines not being used to energize the electrothermal conversion elements, the plurality of electrothermal conversion elements, the plurality of first conductive lines, and the plurality of second conductive lines having an arrangement order, in an arrangement direction of the element array parallel to the surface of the substrate, of one of the electrothermal conversion elements, one of the first conductive lines, another of the electrothermal conversion elements, and one of the second conductive lines; a coating step following the preparing step, the coating step coating the surface with a photosensitive material that is cured upon exposure; and an exposure step following the coating step, the exposure step exposing at least portions of the photosensitive material except for masked parts corresponding to the ejection openings, the portions overlapping with the first conductive lines or the second conductive lines in a direction vertical to the surface of the substrate.