Ink-jet recording head and its manufacturing method

Abstract

When liquid for recording such as ink is accumulated around ejection ports deviations in ejecting (flying) directions of ink droplets ejected from ejection ports in an ink-jet recording head are observed so that recording results of high quality can not be attained any more. In order to prevent such deviations water-repellent treatments have been employed. The present invention provides a means with a simple ink-jet recording head manufacturing procedure enable to provide an ink-jet recording head at a low cost. In order to provide such ink-jet recording head the following method is proposed. A manufacturing method of an ink-jet recording head characterized by forming ejection ports and water-repellent treated areas simultaneously by one patterning procedure comprising steps of, forming a resin layer for ejection ports out of an energy active ray curing material, curing portions of the resin layer to be hydrophilic except ejection ports irradiating the energy active ray, applying a water-repellent photosensitive resin curable by the energy active ray on the cured resin layer and irradiating energy active ray for curing portions of the applied water-repellent photosensitive resin layer corresponding to the ejection ports and the inner and the resin layer for the ejection ports.

Dependencies are inferred from the claim text.