Patents by Inventor Robert V. Lorenze, Jr.

Robert V. Lorenze, Jr. has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 6464347
    Abstract: A filter structure having a plurality of pores through the structure each of the pores having a cross section with a length (L) and a width (W) wherein the dimension of L is greater than the dimension of W. The filter can be used with an improved ink jet printhead having an ink inlet in one of its surfaces, a plurality of nozzles, individual channels connecting the nozzles to an internal ink supplying manifold, the manifold being supplied ink through the ink inlet, and selectively addressable heating elements for expelling ink droplets, the improved ink jet printhead comprising a substantially flat filter having predetermined dimensions and being bonded to the printhead containing the ink inlet, the filter having a plurality of pores, therethrough, each of the pores having a cross section with a length=L and a width=W, wherein the dimension of L is greater than the dimension of W.
    Type: Grant
    Filed: November 30, 2000
    Date of Patent: October 15, 2002
    Assignee: Xerox Corporation
    Inventors: Gary A. Kneezel, John R. Andrews, Robert V. Lorenze, Jr., Almon P. Fisher, Mehmet Z. Sengun
  • Patent number: 5870123
    Abstract: In an ink-jet printhead, the individual channels for ejecting ink onto a print medium are orientation dependently etched along the (111) planes perpendicular to the (110) surface orientation of a single crystal silicon wafer. The silicon wafer is bonded on a glass substrate to act as both a support and an etch stop in the etching process. The orientation of the channels within the silicon layer facilitates channels which are rectangular in cross section.
    Type: Grant
    Filed: July 15, 1996
    Date of Patent: February 9, 1999
    Assignee: Xerox Corporation
    Inventors: Robert V. Lorenze, Jr., James F. O'Neill
  • Patent number: 5801735
    Abstract: A system is provided for refilling an ink reservoir associated with an ink jet printhead. The printhead is mounted on a movable carriage which, when refill is needed, and in a first embodiment, is automatically moved to a refill station. At the refill station, a refill ink source is brought into sealing engagement with the front nozzle face of the printhead. Ink from a refill container is forced into the printhead nozzles and flows through the nozzle channels back into the reservoir. The refill operation is then enabled by establishing a pressure gradient against the refill ink container forcing it through a pressure regulating drive seal, or a filter, into the nozzles. Alternatively, a vacuum is established through a vent tube connecting into the cartridge reservoir creating a negative differential at the vent hole and causing the ink from the refill container to pass through the nozzles into the supply reservoir.
    Type: Grant
    Filed: September 5, 1995
    Date of Patent: September 1, 1998
    Assignee: Xerox Corporation
    Inventors: Robert V. Lorenze, Jr., Renato P. Apollonio
  • Patent number: 5663754
    Abstract: A method and apparatus is provided for refilling an ink reservoir associated with an ink jet printhead. A refill ink source is brought into sealing engagement with the front nozzle face of the printhead. Ink from the refill reservoir is forced into the printhead nozzles and flows through the nozzle channels back into the reservoir. The refill operation can be enabled by establishing a pressure gradient against the refill ink supply forcing it through a pressure regulating drive seal, or a filter, into the nozzles. Alternatively, a vacuum is established through a vent tube to the cartridge reservoir creating a negative differential at the vent hole and causing the ink from the refill container to pass through the nozzles into the supply reservoir.
    Type: Grant
    Filed: September 5, 1995
    Date of Patent: September 2, 1997
    Assignee: Xerox Corporation
    Inventors: Robert V. Lorenze, Jr., Renato P. Apollonio
  • Patent number: 5461406
    Abstract: An apparatus and method for ejecting ink droplets from a plurality of nozzles located in the front face of a printhead controls front face geometries to ensure consistent image quality. A front face dicing angle and a thick film insulative layer etchback are controlled to maintain a Spot Aspect Ratio of each of the droplets ejected from the printhead within a predetermined acceptable range. The Spot Aspect Ratio may be maintained by control of an effective meniscus tilt angle.
    Type: Grant
    Filed: January 3, 1994
    Date of Patent: October 24, 1995
    Assignee: Xerox Corporation
    Inventors: Robert V. Lorenze, Jr., Daniel E. Kuhman
  • Patent number: 5204690
    Abstract: An ink jet printhead having an integral silicon filter over the printhead ink inlet is disclosed. The filter is produced by orientation dependent etching during printhead fabrication. The individual printheads are obtained by a sectioning operation which cuts aligned and bonded channel and heater wafers into a plurality of printheads. The channel wafer is orientation dependent etched from one side of a (100) silicon wafer through a patterned etch resistant mask layer to produce the plurality of reservoir recesses, each having a predetermined depth and floor thickness, and a plurailty of sets of parallel ink channel grooves, one set of channel grooves for each reservoir recess. The etch resistant mask layer on both sides of the channel wafer are removed and a second etch resistant mask layer is deposited thereon.
    Type: Grant
    Filed: July 1, 1991
    Date of Patent: April 20, 1993
    Assignee: Xerox Corporation
    Inventors: Robert V. Lorenze, Jr., James F. O'Neill
  • Patent number: 4418472
    Abstract: A method for delineating vertically configured thin film magnetic heads formed upon silicon wafer substrates. A plurality of thin film magnetic head arrays are formed on a (110) oriented surface of a single crystal silicon substrate so that the edges of the arrays are aligned parallel to the {111} planes of the substrate. Following photolithographic formation of a mask, ion beam milling perpendicular to the (110) oriented surface of the silicon substrate delineates the thin film magnetic head array structures. Thereafter, the remainder of the silicon substrate is anisotropically etched to completely delineate the individual array structures.
    Type: Grant
    Filed: November 23, 1981
    Date of Patent: December 6, 1983
    Assignee: Xerox Corporation
    Inventor: Robert V. Lorenze, Jr.
  • Patent number: 4286278
    Abstract: A hybrid mosaic IR/CCD focal plane structure has high detector element packing densities which may be achieved using cost effective planar processing technology. The focal plane structure preferably includes an insulator layer over a silicon substrate which contains integrated circuit CCD signal processing circuitry. A mosaic photovoltaic (Hg,Cd)Te detector array is fabricated on the insulator layer. The photosignals from the detector array are coupled to the CCD circuitry by thin film electrical interconnects together with contact pads which extend through the insulator layer and are exposed at the surface of the insulator layer.
    Type: Grant
    Filed: August 16, 1979
    Date of Patent: August 25, 1981
    Assignee: Honeywell Inc.
    Inventors: Robert V. Lorenze, Jr., William J. White
  • Patent number: 4275407
    Abstract: A hybrid mosaic IR/CCD focal plane structure is fabricated on a silicon substrate which contains integrated circuit CCD signal processing circuitry. Contact pads are formed which are connected to the signal processing circuitry and which extend above the surface of the silicon substrate. An insulator layer is formed which covers the substrate and the contact pads. The insulator layer is then lapped to form an essentially planar surface with the contact pads exposed. A mosaic detector array is fabricated on the insulator layer, and thin film electrical interconnects are formed from the detectors to the exposed contact pads to couple the photosignals from the detector array to the CCD circuitry.
    Type: Grant
    Filed: October 15, 1979
    Date of Patent: June 23, 1981
    Assignee: Honeywell Inc.
    Inventor: Robert V. Lorenze, Jr.
  • Patent number: 4197633
    Abstract: A hybrid mosaic IR/CCD focal plane structure has high detector element packing densities which may be achieved using cost effective planar processing technology. The focal plane structure preferably includes an insulator layer over a silicon substrate which contains integrated circuit CCD signal processing circuitry. A mosaic photovoltaic (Hg,Cd)Te detector array is fabricated on the insulator layer. The photosignals from the detector array are coupled to the CCD circuitry by thin film electrical interconnects together with contact pads which extend through the insulator layer and are exposed at the surface of the insulator layer.
    Type: Grant
    Filed: September 1, 1977
    Date of Patent: April 15, 1980
    Assignee: Honeywell, Inc.
    Inventors: Robert V. Lorenze, Jr., William J. White
  • Patent number: 4196508
    Abstract: A hybrid mosaic IR/CCD focal plane structure is fabricated on a silicon substrate which contains integrated circuit CCD signal processing circuitry. Contact pads are formed which are connected to the signal processing circuitry and which extend above the surface of the silicon substrate. An insulator layer is formed which covers the substrate and the contact pads. The insulator layer is then lapped to form an essentially planar surface with the contact pads exposed. A mosaic detector array is fabricated on the insulator layer, and thin film electrical interconnects are formed from the detectors to the exposed contact pads to couple the photosignals from the detector array to the CCD circuitry.
    Type: Grant
    Filed: September 1, 1977
    Date of Patent: April 8, 1980
    Assignee: Honeywell Inc.
    Inventor: Robert V. Lorenze, Jr.
  • Patent number: 4188709
    Abstract: A double-sided mosaic focal plane for infrared detection includes a semiconductor substrate having first and second opposing surfaces. Infrared detectors are mounted on the first surface and solid state signal processing circuitry is formed in the semiconductor substrate proximate the second surface. Interconnect means extend through the semiconductor substrate to interconnect the infrared detectors with the solid state signal processing circuitry.
    Type: Grant
    Filed: June 16, 1978
    Date of Patent: February 19, 1980
    Assignee: Honeywell Inc.
    Inventors: Robert V. Lorenze, Jr., William J. White
  • Patent number: 4104674
    Abstract: A double-sided mosaic focal plane for infrared detection includes a semiconductor substrate having first and second opposing surfaces. Infrared detectors are mounted on the first surface and solid state signal processing circuitry is formed in the semiconductor substrate proximate the second surface. Interconnect means extend through the semiconductor substrate to interconnect the infrared detectors with the solid state signal processing circuitry.
    Type: Grant
    Filed: February 7, 1977
    Date of Patent: August 1, 1978
    Assignee: Honeywell Inc.
    Inventors: Robert V. Lorenze, Jr., William Joseph White
  • Patent number: 4069095
    Abstract: A method of preparing photodetector array elements from a body of photodetector material wherein conductive layers of a metal are formed on selected portions of a substrate, the conductive layers are coated with a photoresist material, an adhesive layer is deposited on the photoresist and the remaining substrate, a body of photodetector material is bonded to the adhesive, and individual photodetector elements are delineated from the body to form the elements of the array and to expose the edges of the photoresist material, and the photoresist layer and material deposited thereon are removed.
    Type: Grant
    Filed: September 7, 1976
    Date of Patent: January 17, 1978
    Assignee: Honeywell Inc.
    Inventors: Robert V. Lorenze, Jr., Miriam F. Young
  • Patent number: 4027323
    Abstract: A novel mask is used to contour the photodetector body and adhesive layer of a photodetector device on a substrate in which the mask apertures define an angle with the plane of the substrate. Air abrasion at that angle removes unwanted portions of the photodetector body and adhesive layer, leaving a contour desirable for subsequent interconnect metallization.
    Type: Grant
    Filed: September 7, 1976
    Date of Patent: May 31, 1977
    Assignee: Honeywell Inc.
    Inventors: Robert V. Lorenze, Jr., Miriam F. Young