NOTCHED BLADE FOR WIPING THERMAL INK JET PRINTHEADS
Original Publication Date: 1998-Apr-30
Included in the Prior Art Database: 2004-Apr-08
Xerox Disclosure Journal
Disclosed is a notched blade for wiping Thermal Ink Jet (TIJ) printheads in thermal ink printers and which blades wipe the face of the printhead, particularly after a prime operation, without wiping the die nozzles of the printhead. Conventional blade wipers are notorious for dragging debris and other contaminant materials into ink jet nozzles during wiping operations. The notched or grooved blade overcomes this problem by avoiding direct contact with the jet nozzle orifice. In an embodiment, the notched blade comprises, for example, a conventional wiping blade that has been notched and wherein the notching corresponds to dimensions that are greater than the outer dimension of the jet nozzle. In another embodiment, there is provided two or more notched blades which wipe or sweep the printhead face in, for example, perpendicular directions and which configuration effectively overcomes the inherent problem of wiping the region between nozzles that is not swept by a single notched blade.