Patent ID: 6938986
Filing Date: 2005-09-06
Classification: B41J,Y10T

Abstract:
1. A fluid-ejecting apparatus, comprising: a substrate with a fluid ejector; and an orifice layer containing at least one orifice through which fluid is ejected by the fluid ejector, wherein the orifice layer has a counterbore that surrounds the orifice and has a surface characteristic based on a property of the fluid ejected through the orifice, the surface characteristic being at least one selected from the group consisting of surface texture, chemical composition, chemical inhomogeneity, chemical reactivity, physical adsorptivity, and chemical adsorptivity; and wherein the orifice layer includes at least a first orifice surrounded by a first counterbore and a second orifice surrounded by a second counterbore; and wherein the first orifice ejects a first fluid having a first property and the second orifice ejects a second fluid having a second property, and wherein the surface texture of the first counterbore is based on the first property and the surface texture of the second counterbore is based on the second property.