Patent ID: 8945817
Filing Date: 2015-02-03
Classification: B41J

Abstract:
1. A process for producing a chip in which plural ejection orifice arrays are arranged, the process comprising the steps of: conducting reduction projection exposure plural times to a wafer having a substrate and a photosensitive resin layer formed on the substrate while relatively moving positions of the wafer and a reticle to form ejection orifice array patterns in the photosensitive resin layer, developing the ejection orifice array patterns to form ejection orifice arrays in the photosensitive resin layer, and dividing the wafer having the photosensitive resin layer in which the ejection orifice arrays have been formed to form plural chips in which the plural ejection orifice arrays are arranged, wherein the reduction projection exposure is conducted once to form in the photosensitive resin layer a first ejection orifice array pattern corresponding to partial ejection orifice arrays in an arranging direction of ejection orifice arrays in one chip, a second ejection orifice array pattern corresponding to all ejection orifice arrays in another one chip and a third ejection orifice array pattern corresponding to partial ejection orifice arrays in an arranging direction of ejection orifice arrays in a further one chip.