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Donald B MacLane, Ted E Deur, Jeffrey J Anderson, Donald R Titterington, James C Oswald, Richard S Meissner: Ink jet print head maintenance system. Tektronix, John D Winkelman, Mark M Meininger, February 2, 1993: US05184147 (57 worldwide citation)

An ink jet print head cleaning and maintenance system has a purge chamber for applying a vacuum to a nozzle orifice surface. A specialized baffle diverts ink entering the purge chamber away a vent port through which the vacuum is drawn. An elongated wipe engages and wipes the orifice surface and is ...


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James C Oswald, Jeffrey J Anderson, Ted E Deur: Ink jet print head face cleaner. Tektronix, John D Winkelman, Edward B Anderson, November 13, 1990: US04970535 (45 worldwide citation)

An ink jet print head face cleaner provides a controlled air passageway through an enclosure formed against the print face. Air is directed through an inlet into a cavity in a body. The body has a face with an opening into the cavity. This face is sealingly placeable against the print face. The cavi ...


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Hue P Le, Joy Roy, Ronald L Adams, James C Oswald, Jeffery J Anderson: Air assisted ink jet head with single compartment ink chamber. Tektronix, John D Winkelman, David P Petersen, March 1, 1988: US04728969 (41 worldwide citation)

An air-assisted drop-on-demand ink jet head 10 has a single compartment ink chamber 14 and is designed for operation over a wide range of ink drop repetition rates, including extremely high repetition rates, such as twenty kilohertz. The components included in the ink jet head have natural resonance ...


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Hue P Le, Charles W Jaeger, James C Oswald: Air assisted ink jet head with projecting internal ink drop-forming orifice outlet. Tektronix, John D Winkelman, David P Petersen, September 23, 1986: US04613875 (37 worldwide citation)

An air assisted drop-on-demand ink jet head 10 has an ink chamber with an ink drop-forming orifice outlet 23 from which ink drops are generated in response to pressure waves caused by a piezoelectric crystal 56. The ink drops are carried by air outwardly through an external orifice 24 and toward pri ...


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Hue P Le, James C Oswald: Film-protected print head for an ink jet printer or the like. Tektronix, William S Lovell, John D Winkelman, John Smith Hill, March 29, 1988: US04734706 (13 worldwide citation)

A viscoelastic and ink-immiscible fluid is used to form a membrane over the ink orifice of a drop-on-demand, pressure pulse ink jet head. The membrane lies in a plane perpendicular to the direction of emission of ink drops, and provides a barrier between the ink orifice and the external atmosphere. ...


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