1
Donald J Drake: Pagewidth thermal ink jet printhead. Xerox Corporation, Robert A Chittum, November 3, 1992: US05160945 (490 worldwide citation)

A pagewidth thermal ink jet printhead for an ink jet printer is disclosed. The printhead is the type assembled from fully functional roofshooter type printhead subunits fixedly mounted on the surface of one side of a structural bar. A passageway is formed adjacent the bar side surface containing the ...


2
Donald J Drake, William G Hawkins: Buttable subunits for pagewidth "Roofshooter" printheads. Xerox Corporation, Oliff & Berridge, January 15, 1991: US04985710 (241 worldwide citation)

A "roofshooter" pagewidth printhead for use in a thermal ink jet printing device is fabricated by forming a plurality of subunits, each being produced by bonding a heater substrate having an architecture including an array of heater elements and an etched ink feed slot to a secondary substrate havin ...


3
Donald J Drake, William G Hawkins: Large array thermal ink jet printhead. Xerox Corporation, Robert A Chittum, May 9, 1989: US04829324 (168 worldwide citation)

A large array ink jet printhead is disclosed having two basic parts, one containing an array of heating elements and addressing electrodes on the surface thereof, and the other containing the liquid ink handling system. At least the part containing the ink handling system is silicon and is assembled ...


4
William G Hawkins, Donald J Drake, Michael R Campanelli: Thermal ink jet printhead and process therefor. Xerox Corporation, Robert A Chittum, July 22, 1986: US04601777 (160 worldwide citation)

Several fabricating processes for ink jet printheads are disclosed, each printhead being composed of two parts aligned and bonded together. One part is a substantially flat substrate which contains on the surface thereof a lineal array of heating elements and addressing electrodes, and the second pa ...


5
William G Hawkins, Ivan Rezanka, Roger G Markham, Dale R Ims, Donald J Drake: Hybrid ink jet printer. Xerox Corporation, January 20, 1998: US05710582 (115 worldwide citation)

An ink jet printer is configured in a hybrid architecture wherein a full width printbar is combined with a partial width color scanning assembly to provide the capability of selectively printing in black only or, alternately, of producing color prints by operating the color scan assembly exclusively ...


6
Stephen F Pond, Donald J Drake, Robert P Altavela, Gary A Kneezel, Ivan Rezanka: Modular partial bars and full width array printheads fabricated from modular partial bars. Xerox Corporation, Oliff & Berridge, October 15, 1991: US05057854 (108 worldwide citation)

Modular partial bars include a substrate bar having a length and a plurality of printhead subunits attached to only one side of the substrate bar, each printhead subunit being spaced from an adjacent printhead subunit. These modular partial bars are used as building blocks to form full width stagger ...


7
Donald J Drake: Multi-resolution roofshooter printheads. Xerox Corporation, Oliff & Berridge, May 4, 1993: US05208605 (97 worldwide citation)

A printhead for a thermal ink jet printer, preferably a roofshooter type printer, includes at least two arrays of linear spaced apart nozzles and heating elements, each array having a different resolution to produce printed pages at a draft print using a low resolution array, at a letter quality pri ...


8
Donald J Drake, Frederick A Donahue: Pagewidth ink jet printer including multiple pass defective nozzle correction. Xerox Corporation, July 18, 2000: US06089693 (96 worldwide citation)

A liquid ink printer, depositing ink drops to form an image, including a pagewidth printbar, movable to print a complete image when defective nozzles of the printbar are identified. A positioning device, coupled to the pagewidth printbar, positions the printbar at a plurality of discrete locations, ...


9
Donald J Drake, William G Hawkins, Stephen F Pond, Michael R Campanelli, Pamela J Hartman, Raymond E Bailey: Thermal ink jet printhead fabricating process. Xerox Corporation, Robert A Chittum, December 6, 1988: US04789425 (90 worldwide citation)

A thermal ink jet printhead of the type which expels droplets on demand towards a recording medium from nozzles located above and generally parallel with the bubble generating heating elements contained therein is disclosed, together with fabrication processes therefor. The droplets are propelled al ...


10
Donald J Drake, William G Hawkins, Michael R Campanelli, Thomas A Tellier: Ode through holes and butt edges without edge dicing. Xerox Corporation, Oliff & Berridge, October 9, 1990: US04961821 (84 worldwide citation)

At least one through opening of predetermined location and dimensions is fabricated in a (100) silicon wafer by orientation dependent etching method after completion of integrated circuits on the wafer, the opening extending through the wafer between a circuit surface of the wafer and an opposite pa ...