Printhead substrate inkjet printheads for inkjet printing, METHOD FOR PRODUCING printhead inkjet printing and inkjet printing devices

摘要

FIELD: printing industry.;SUBSTANCE: invention discloses a print head for inkjet printing, comprising: - the substrate of the print head for inkjet printing, comprising: a base; a plurality of heating resistors for heating ink, at that the heating resistors are located on the base and generate heat in case of power supply to the heating resistors; the first protective layer located on the heating resistor and having insulation properties; and the second protective layer located on the first protective layer and having electric conductivity. At that the second protective layer comprises the single sections which arrangement provides separate coating of a plurality of heating resistors, a common section connecting the single sections, and connecting the sections included between the single sections and the common section and connecting the single sections and the common section, and the connecting sections are at the positions where the contact with the ink should occur, and comprise the material which is transformed into the insulating film by an electrochemical reaction with the ink; and-gate forming flow channels, adhered to the upper side of the substrate on which the second protective layer is located, at that the element forming the flow channels restricts the fluid chambers made with the ability to hold the ink at the positions corresponding to the heating resistors between the element forming the flow channels and the substrate, and has the ejecting openings for ejecting ink, facing the heating resistors. At that the print head for inkjet printing heats the ink contained in the fluid chambers by the actuation of the heating resistors to form bubbles in the ink, which results in the ejection of ink droplets from the ejecting openings.;EFFECT: improvement of the quality of the head printing by increasing the accuracy of attachment of the fluid feeding element on the substrate.;13 cl, 9 dwg