Patents Represented by Attorney David E. Henn
  • Patent number: 7182903
    Abstract: Multilayered web stock is directed toward a curved surface and at least one layer of the web stock is heated to a temperature above a glass transition temperature of the at least one layer of the web stock. The heating can occur just before or upon engaging the curved surface. The temperature of the at least one layer remains above the glass transition temperature while engaging the curved surface, allowing reshaping and/or realignment of the at least one layer relative to other layers of the web stock according to conformance to the curved surface. The web stock is cooled before it disengages from the curved surface. The heating can be done with a high power infrared lamp focused into a line across the web stock, and the cooling can be done with a cooled fluid jet. Additionally, a preheater can be employed, and a supplemental cooler can be used.
    Type: Grant
    Filed: March 7, 2003
    Date of Patent: February 27, 2007
    Assignee: Xerox Corporation
    Inventors: Robert C. U. Yu, Satchidanand Mishra, Anthony M. Horgan, Richard L. Post, Edward F. Grabowski, Tsu-sen Chow, John A. Bergfjord, Sr., Miguel A. Boscan, John J. Darcy, III, Michael S. Roetker, Scott J. Griffin
  • Patent number: 6972532
    Abstract: By controlling all motors so that they all decelerate at substantially the same rate, buckling of media in a media handling system is substantially eliminated on shutdown. Preferably, the deceleration rate of the highest inertia motor is used as the common deceleration rate.
    Type: Grant
    Filed: May 19, 2003
    Date of Patent: December 6, 2005
    Assignee: Xerox Corporation
    Inventors: Daniel L. Carter, Richard C. Schenk
  • Patent number: 6909867
    Abstract: By varying corona producing element height/projection, a more uniform charge potential is achieved. Elements, such as pins or teeth, are shorter at the edges of an element array and grow longer as one moves toward the center of the array. Such variation in height/projection overcomes shielding from adjacent teeth, as well as other effects, to yield the more uniform charging potential.
    Type: Grant
    Filed: August 29, 2003
    Date of Patent: June 21, 2005
    Assignee: Xerox Corporation
    Inventors: Satchidanand Mishra, Edward A. Domm, Dennis J. Prosser, Steven P. Nonkes, Zoran D. Popovic
  • Patent number: 6905572
    Abstract: A belt seam treatment apparatus includes a support element with a smooth surface that supports the seam region of the belt, a heat source that heats a treatment strip and the belt seam region, and a pressure applicator that forces the treatment strip against the belt seam region. The support element can be a tube over which the belt hangs and can include a vacuum belt hold system that secures the seam region against the tube during treatment. The heat source can be an infrared laser or an infrared lamp. Optics form a heat spot or a heat line on the strip and seam region, and a pressure wheel traverses the seam region after heating to compress the strip and seam and bond a thermoplastic polymer of the strip to the seam region of the belt.
    Type: Grant
    Filed: May 30, 2002
    Date of Patent: June 14, 2005
    Assignee: Xerox Corporation
    Inventor: Robert C. U. Yu
  • Patent number: 6863366
    Abstract: A cleaning system for a fluid ejector arrangement employing a single roller for handling different fluids that should not be mixed. The single roller is divided into portions assigned to respective fluids. In embodiments, the single roller is used to clean a plurality of ejectors, in which case each section of the roller handles one ejector. In other embodiments, the single roller is used to clean a single ejector that ejects to a plurality of fluids, in which case each section of the roller handles one fluid. Still other embodiments can employ a plurality of ejectors and a plurality of fluids ejected from one or more of the ejectors, wherein each section of the roller is assigned to a particular fluid, whether the fluid be ejected from the same ejector or from a different ejector.
    Type: Grant
    Filed: June 26, 2003
    Date of Patent: March 8, 2005
    Assignee: Xerox Corporation
    Inventors: Karai P. Premnath, Stephen D. Cipolla
  • Patent number: 6856784
    Abstract: A belt fuser includes fuser and tension rollers rotatably supported in a frame. A belt reeved over the fuser and tension rollers holds at least two idler rollers in place and forms a nip with the fuser roller. The tension roller is connected to a tension control mechanism that applies, through the tension roller, a tension force in the belt and a normal force against the fuser roller throughout the nip. Because the belt holds the idler rollers in place, they can be of low-cost, light-weight, compact construction and require no additional support. Fusing nip length, dwell time, and thermal efficiency are greatly improved over two roll fusers, and the fusing temperature can be significantly reduced as a result. The belt fuser is more compact than previous belt fusers, occupying only slightly more space than conventional two roll fusers.
    Type: Grant
    Filed: April 30, 2003
    Date of Patent: February 15, 2005
    Assignee: Xerox Corporation
    Inventor: Robert G. Pirwitz
  • Patent number: 6849836
    Abstract: A belt seam treatment apparatus includes a support element with a smooth surface that supports the seam region of the belt and a heat and pressure source that heats a treatment strip and the belt seam region and that forces the treatment strip against the belt seam region. The support element can be a tube over which the belt hangs and can include a vacuum belt hold system that secures the seam region against the tube during treatment. The heat and pressure source can be a heated pressure bar engaging the entire seam region or a heated pressure wheel traversing the seam region of the entire belt width.
    Type: Grant
    Filed: October 24, 2003
    Date of Patent: February 1, 2005
    Assignee: Xerox Corporation
    Inventor: Robert C. U. Yu
  • Patent number: 6818170
    Abstract: A flexible imaging belt seam treatment article comprising a high-temperature-resistant flexible substrate that supports a thermoplastic polymer film. The film is deposited on the flexible substrate by dissolution of a film-forming thermoplastic polymer in a carrier solvent, applying the resulting solution to the flexible substrate, and eliminating the carrier solvent. The article can then be used to treat a seam of a flexible imaging belt by placing it on the seam, heating the strip and seam, and applying pressure to the strip and seam.
    Type: Grant
    Filed: May 30, 2002
    Date of Patent: November 16, 2004
    Assignee: Xerox Corporation
    Inventor: Robert C.U. Yu
  • Patent number: 6803549
    Abstract: A belt seam treatment apparatus includes a support element with a smooth surface that supports the seam region of the belt and a heat and pressure source that heats a treatment strip and the belt seam region and that forces the treatment strip against the belt seam region. The support element can be a tube over which the belt hangs and can include a vacuum belt hold system that secures the seam region against the tube during treatment. The heat and pressure source can be a heated pressure bar engaging the entire seam region or a heated pressure wheel traversing the seam region of the entire belt width.
    Type: Grant
    Filed: May 30, 2002
    Date of Patent: October 12, 2004
    Assignee: Xerox Corporation
    Inventor: Robert C. U. Yu
  • Patent number: 6678713
    Abstract: A method of use of real time machine control software integrating both event based mode and task based components. In particular, a collection of constructs have been created that allow machine control applications to be expressed in event based terms and the event based constructs to be seamlessly integrated with task based constructs. The method includes the use of response time specifications, in particular in conjunction with ReactiveTask and Task constructs. The method also includes the use of Register, ReferenceClock, and SchedulerLock constructs.
    Type: Grant
    Filed: April 29, 1998
    Date of Patent: January 13, 2004
    Assignee: Xerox Corporation
    Inventors: Raymond I. Mason, Michael D. Dixon, Thomas G. Beaman, Robert P. Ferraro, Robert M. Vanduyn, James J. Des rivieres
  • Patent number: 6667752
    Abstract: A discharge device usable in an electrostatographic printing machine uses a plurality of emissions to discharge an image receiver, such as a photoreceptor, of the printing machine. The discharge device can be used as a charge erase device, a reconditioning device, an imaging device, or a combination of these. In embodiments, the different emissions come from different groups of emitters within the device, such as from rows of emitters or from groups interspersed within a single row. In other embodiments, at least some of the emitters are tunable and can emit more than one type of emissions. For example, tunable LEDs could be employed in the device.
    Type: Grant
    Filed: December 28, 2001
    Date of Patent: December 23, 2003
    Assignee: Xerox Corporation
    Inventors: Moritz P. Wagner, Neville R. Phillips, Dennis A. Abramsohn
  • Patent number: 6661441
    Abstract: A refractive body includes a lens, holder, and aperture particularly suited for use in raster scanners. The refractive body advantageously can be made from resinous materials, such as plastics, but can be formed from any refractive material as may be appropriate. The aperture is formed from portions of the refractive body surrounding the lens and can act to divert excess light from the optical path of the scanner by refraction or reflection.
    Type: Grant
    Filed: January 30, 2002
    Date of Patent: December 9, 2003
    Assignee: Xerox Corporation
    Inventor: Moritz P. Wagner
  • Patent number: 6651522
    Abstract: Guide ring arranged coaxially with a drive shaft includes locating and locking features ensuring proper orientation of drive and driven shafts, also ensuring proper backlash between gears mounted thereon. Guide ring is inserted through a keyed aperture of a mounting bracket and brought into proximity with the driven shaft frame. Rotation of motor and guide ring in first direction draws shafts into alignment; mounting bracket is attached to driven shaft frame. Motor and guide ring then rotated in opposite direction to second extreme position in which the motor is locked and driven shaft can rotate freely.
    Type: Grant
    Filed: September 5, 2001
    Date of Patent: November 25, 2003
    Assignee: Xerox Corporation
    Inventors: Ermanno C. Petocchi, Roger C. Male, Stephen A. Bonelli, Michael J. Hill, Thomas C. Hatch
  • Patent number: 6603575
    Abstract: A system and method for processing image data converts a pixel of image data having a first resolution to a plurality of subpixels, the plurality of subpixels representing a second resolution, the second resolution being higher than the first resolution. The plurality of subpixels are thresholded to generate a group of subpixel values for each pixel and a threshold error value. It is then determined if the group of subpixel values from the thresholding process produce a pattern containing an isolated subpixel. If the group of subpixel values from the thresholding process produce a pattern containing an isolated subpixel, the group of subpixel vales is modified to produce a pattern without an isolated subpixel. The modification process produces a subpixel error value which is compensated for localized error before being diffused to adjacent pixels.
    Type: Grant
    Filed: January 16, 2002
    Date of Patent: August 5, 2003
    Assignee: Xerox Corporation
    Inventors: Stuart A. Schweid, David J. Metcalfe
  • Patent number: 6587227
    Abstract: An input scanner for scanning three-dimensional objects, such as books, on a platen. An elongated raster scanner produces a digital representation of a line image in an object plane that is a fixed distance in front of the raster scanner's input optics. When scanning the three-dimensional object the raster scanner travels along a track guide that is contoured in the Z-direction. That contour is designed to mimic the contour of the three-dimensional object being scanned. When traveling along the track guide the distance between the three-dimensional object and the object plane remains substantially constant.
    Type: Grant
    Filed: December 9, 1999
    Date of Patent: July 1, 2003
    Assignee: Xerox Corporation
    Inventor: Jack K. Fullerton
  • Patent number: 6580858
    Abstract: A MEMS-based adjustable mirror module allows faster, lower cost, and easier alignment of optical fibers in substrates. Movable mirrors formed on the substrate allow adjustment of the light path after the optical fiber is attached, after which the mirrors are affixed in place to prevent misalignment.
    Type: Grant
    Filed: April 30, 2001
    Date of Patent: June 17, 2003
    Assignee: Xerox Corporation
    Inventors: Jingkuang Chen, Joel A. Kubby, Decai Sun
  • Patent number: 6567448
    Abstract: A III-V compound light emitter is integrated with Si-based actuators. The proposed devices take advantage of the superior optical properties of III-V compounds and the superior mechanical properties of Si, as well as mature fabrication technologies of Si-Micro-Electro-Mechanical Systems (MEMS). The emitter can be a light emitting diode (LED), a vertical cavity surface emitting laser (VCSEL) or an edge emitting laser.
    Type: Grant
    Filed: December 11, 1998
    Date of Patent: May 20, 2003
    Assignee: Xerox Corporation
    Inventors: Decai Sun, Ross D. Bringans, Christopher L. Chua, Philip D. Floyd, Eric Peeters, Joel A. Kubby, Alex T. Tran
  • Patent number: 6480878
    Abstract: A method of use of real time machine control software integrating both event based mode and task based components. In particular, a collection of constructs have been created that allow machine control applications to be expressed in event based terms and the event based constructs to be seamlessly integrated with task based constructs. The method includes the use of response time specifications, in particular in conjunction with ReactiveTask and Task constructs. The method also includes the use of Register, ReferenceClock, and SchedulerLock constructs.
    Type: Grant
    Filed: April 29, 1998
    Date of Patent: November 12, 2002
    Assignee: Xerox Corporation
    Inventors: Raymond I. Mason, Michael D. Dixon, Thomas G. Beaman, Robert P. Ferraro, Robert M. Vanduyn, James J. Des rivieres
  • Patent number: RE39261
    Abstract: A solid state laser beam scanning system having a single crystal silicon deflection and scanning mirror integrated with a laser diode. By combining the techniques of deep reactive ion etching of silicon with solder bump bonding techniques, completed and tested laser diodes are integrated with silicon substrates supporting micro-electro-mechanical systems layers.
    Type: Grant
    Filed: December 14, 2001
    Date of Patent: September 5, 2006
    Assignee: Xerox Corporation
    Inventors: Philip D. Floyd, Decai Sun, Joel A. Kubby
  • Patent number: RE38437
    Abstract: An solid state scanning system having a single crystal silicon deflection mirror and scanning mirror is integrated with a light source. Separation of the micro-electro-mechanical systems and light emitters on separate substrates allows the use of flip-chip and solder bump bonding techniques for mounting of the light sources. The separate substrates are subsequently full wafer bonded together to create an integrated solid state scanning system.
    Type: Grant
    Filed: December 20, 2001
    Date of Patent: February 24, 2004
    Assignee: Xerox Corporation
    Inventors: Philip D. Floyd, Decai Sun, Joel A. Kubby