Patent ID: 6045215
Filing Date: 2000-04-04
Classification: B41J

Abstract:
A method for producing a high-durability printhead for use in an ink cartridge comprising the steps of:providing a substrate comprising an upper surface, said upper surface comprising at least one ink ejector thereon for expelling ink on-demand from said printhead and a layer of barrier material positioned on at least a portion of said upper surface of said substrate;providing an orifice plate member comprising a bottom surface and at least one opening passing through said orifice plate member, said bottom surface of said orifice plate member being comprised of at least one elemental noble metal selected from the group consisting of gold, platinum, palladium, and mixtures thereof;coating at least a portion of said bottom surface of said orifice plate member with a mercapto trialkoxy silane composition in order to form a primary adhesion layer on said bottom surface of said orifice plate member;chemically converting said mercapto trialkoxy silane composition in said primary adhesion layer to a mercapto oxysilane polymer composition;coating at least a portion of said primary adhesion layer with a trialkoxy silane coupling agent in order to form a secondary adhesion layer positioned on said primary adhesion layer and chemically bonded thereto, said primary adhesion layer and said secondary adhesion layer combining to form a composite adhesive layer secured to said bottom surface of said orifice plate member; andplacing said composite adhesive layer secured to said bottom surface of said orifice plate member in contact with said layer of barrier material in order to securely affix said orifice plate member to said layer of barrier material and thereby produce said high-durability printhead.