Patents Represented by Attorney Frederick H. Gribbell
  • Patent number: 6578746
    Abstract: A golf ball marker holder is provided that can be placed upon the top surface of a golfer's shoe and attached to the shoe by sliding the shoe lace of the golfer's shoe up a slot, past a retaining structure, and into a receiving area, after which the shoe lace is tightened and the golf ball marker holder is retained in place. The holder is of a unitary structure having two major portions, in which these two portions are pivotally attached to one another to form an upper and lower portion that forms a slot therebetween. This slot is used to receive the shoe lace of a golfer's shoe, and the holder is maneuvered to slide the shoe lace through the slot and into a receiving area. Once the shoe lace reaches that receiving area, the shoe lace will be retained by a corner structure within the slot, which will not allow the shoe lace to easily slide back out of the slot.
    Type: Grant
    Filed: October 27, 2000
    Date of Patent: June 17, 2003
    Assignee: Ceza, LLC
    Inventor: Kenneth J. Greves
  • Patent number: 6567633
    Abstract: An improved intermediate belt system (ITM module) is provided, which controls the lateral motion of the belt in the scan direction of an EP printer, without the use of edge reinforcements or other attachments added to the belt. The tracking system of this ITM module is passive, and maintains roll alignment/parallelism within a predetermined tolerance while also maintaining roll conicity-end flare to a predetermined maximum diametral variation over the roll to minimize the effect of external forces on the belt walk rate. The ITM module also provides angled tracking guides near the tension roll to control the lateral position of the belt; the position of these tracking guides is adjustable at time of manufacture to achieve the desired lateral belt position.
    Type: Grant
    Filed: September 28, 2001
    Date of Patent: May 20, 2003
    Assignee: Lexmark International, Inc.
    Inventors: Robert Leonard Burdick, Mark Andrew Omelchenko, Stacy Marie Pargett, Harald Portig
  • Patent number: 6512597
    Abstract: A printer that stores a minimal number of unadjusted stochastic threshold arrays in non-volatile memory, in which the unadjusted threshold arrays are used to generate adjusted threshold arrays at run time by use of special parameterized transfer functions. The unadjusted array for a particular color is stored in the printer's ROM and preferably is stored in a packed configuration to save memory space. The parameterized transfer functions are used to convert the unadjusted threshold data into adjusted threshold data for each color and type of print media. These parameterized transfer functions are stored in the printer's non-volatile memory, and take up very little memory space. In a preferred embodiment, the unadjusted threshold array comprises a 128 row by 128 column sized array, and each element of this array comprises a 10-bit number.
    Type: Grant
    Filed: November 17, 1999
    Date of Patent: January 28, 2003
    Assignee: Lexmark International, Inc.
    Inventors: Brian Edward Cooper, Brian Wesley Damon, Paul Athanasius Robinson, Thomas Campbell Wade
  • Patent number: 6509555
    Abstract: An apparatus and system for using magnetic fields to heat magnetically susceptible materials within and/or adjacent to adhesives, resins, or composites so as to reversibly or irreversibly bond, bind, or fasten opaque or non-opaque solid materials to one another. The system makes use of the effect that alternating magnetic fields induce eddy currents and generate heat within susceptors, and the effect that alternating magnetic fields additionally induce magnetic hysteresis that occurs in magnetic materials and thereby generate heat. An induction heating tool is used to emit the magnetic field at its work coil, and an electronic controller measures the energy being used by a power converter that generates the alternating current driving the work coil which creates the magnetic field. The distance between the susceptor and work coil is repeatedly analyzed based upon the power converter's input energy, and the work coil is driven at a repeatedly corrected power level during the heating cycle.
    Type: Grant
    Filed: November 2, 2000
    Date of Patent: January 21, 2003
    Assignee: Nexicor LLC
    Inventors: Edward A. Riess, Adam G. Malofsky, Bernard M. Malofsky, John P. Barber, Gary L. Claypoole, Robert Carl Cravens, II, David R. Pacholok, Charles A. Kuecker
  • Patent number: 6454500
    Abstract: A bladderless dunnage bag is provided in which the primary material used for construction is a dunnage material based upon a paper substrate in which one or both of its outer surfaces are coated with a resin material that is impermeable to air and is heat sealable. By use of heat sealable coating materials, a center seal and the end seals of the dunnage bag can be formed in a moving process, and the heat-sealable joints or seals are stronger than the paper substrate material itself, since the heat seals are comprised of the coating material being adhered to itself, rather than the use of an adhesive applied to a paper material as in conventional dunnage bags. In a preferred construction, the dunnage material has a resin coating on both the top and bottom surfaces of the paper substrate, and both lap joints and fin joints can be formed by a heat sealable process that adheres the coating materials together, and does not depend upon the paper material for strength.
    Type: Grant
    Filed: December 6, 2000
    Date of Patent: September 24, 2002
    Assignee: International Paper Company
    Inventor: Shankara R. Shetty
  • Patent number: 6398175
    Abstract: A hand-held laser detector clamp apparatus is provided for use in attachment against virtually all available sizes and shapes of members found on construction sites and in surveying applications. A reversible jaw adapter that contains both a “flat” face and a “ramped” face is attached to a travelling clamp jaw with a clamp lead screw. The reversible jaw adapter can be used with either its flat face out or its ramped face out. A detector bracket and detector screw are also provided as part of the clamp apparatus to hold a hand-held laser detector in place. If the flat face of the reversible jaw adapter is oriented so as to be “out,” then the clamp apparatus will generally be most useable in attaching to flat surfaces, such as rectangular rods or boards.
    Type: Grant
    Filed: December 22, 2000
    Date of Patent: June 4, 2002
    Assignee: Apache Technologies, Inc.
    Inventors: Robert G. Conner, Chris W. Snyder
  • Patent number: 6370354
    Abstract: An improved printing apparatus provides for very accurate synchronization between cut sheet print media and the unfixed image which is conveyed on an Intermediate Transfer Member (ITM) such as a belt or a drum, and which is targeted for said print media. The printing apparatus is constructed as a single-pass ITM-based electrophotographic (e.g., laser) printer, and the length of the input print media pathway prior to image-to-media transfer is significantly shorter than the sum of the lengths of the image travel along a photoconductive drum and ITM. The print media is typically launched after imaging has been initiated on the photoconductive drum by an imaging apparatus. Variance in the leading edge of the print media with respect to the leading edge of image can be introduced due to phenomena such as pick errors, velocity variation, and uncertainties in the paper stack height.
    Type: Grant
    Filed: August 8, 2000
    Date of Patent: April 9, 2002
    Assignee: Lexmark International, Inc.
    Inventors: Danny Keith Chapman, Matthew Lowell McKay
  • Patent number: 6356363
    Abstract: A dispersed-dot stochastic dither array is provided for rendering halftone images having excellent visual quality. For color printing, a separate threshold array is generated for each of the color planes, however, the stochastic screens are interlocked so that the threshold arrays are generated while considering the other color threshold arrays. In this manner, a blue noise distribution may be produced by the individual arrays as well as by any combination of the individual arrays. When generating a single threshold array for a color plane, a particular criterion is used to determine where the next threshold value should be located, and the selection of a threshold location in each array considers the criterion for all the threshold arrays being generated. By using the interlocked threshold arrays approach, the overall visual affect will be improved for both individual threshold arrays and for a combination of more than one of the threshold arrays.
    Type: Grant
    Filed: January 31, 2000
    Date of Patent: March 12, 2002
    Assignee: Lexmark International, Inc.
    Inventors: Brian Edward Cooper, Shaun Timothy Love
  • Patent number: 6302514
    Abstract: An improved ink jet printer is provided in which its carrier position and velocity information is derived from a linear optical encoder mounted on the carrier, which produces the position information uses a quadrature output signal, and one of the channels of that output signal is used to determine “critical edge” transitions used to provide the actual print fire timing. Two adjacent encoder periods are needed to determine the acceleration of the carrier. By measuring the time intervals of these two encoder periods, and measuring the difference between these time intervals, the present invention provides correction logic that can determine if the second of the two measurements has been corrupted by motion not relative to carrier speed across the print media. If the difference between the previous two periods is greater than a preset maximum, the correction logic will limit the new encoder time (i.e.
    Type: Grant
    Filed: September 3, 1999
    Date of Patent: October 16, 2001
    Assignee: Lexmark International, Inc.
    Inventors: Thomas Jon Eade, Darrel Lee Henry
  • Patent number: 6266165
    Abstract: An improved “scattered data transformation” method for warping/morphing color data is provided to transform n-dimensional data so that only selected regions of the n-color space are modified. The method uses a set of “input points” that are chosen to represent the color gamut for an input color space. In addition, a set of “training points” having associated “training vectors” are chosen in the input color space, and the training points are used to define the transform output for the input points in the color input space. Some (or all) of the input points may also be training points, but it is not necessary that any of the input points be training points.
    Type: Grant
    Filed: September 30, 1998
    Date of Patent: July 24, 2001
    Assignee: Lexmark International, Inc.
    Inventors: Xuan-Chao Huang, Brant Dennis Nystrom, Richard Lee Reel
  • Patent number: 6247088
    Abstract: An improved computing system is provided that includes an embedded PCI device without the use of a PCI bridge to isolate the PCI device from the CPU and the system memory devices. This is accomplished by use of synchronous dynamic RAM (SDRAM) as the main memory device for the CPU, and by providing a PCI/SDRAM logic circuit to control the interfacing of the data and control signals between the PCI device, CPU, and SDRAM device. A combined PCI/Host data bus is provided that connects all of the major system components, including the SDRAM device, the CPU, the PCI device(s), and the PCI/SDRAM logic circuit, thereby eliminating the use of two separate buses found in conventional personal computers. By use of the synchronous DRAM, the present invention provides a much more efficient memory system for interfacing with PCI devices, and thereby dramatically increases the memory bandwidth as compared to conventional computing systems that use asynchronous DRAM.
    Type: Grant
    Filed: May 8, 1998
    Date of Patent: June 12, 2001
    Assignee: Lexmark International, Inc.
    Inventors: Toshio Seo, Jason Eric Waldeck
  • Patent number: 6133991
    Abstract: An improved photocell configuration is provided to create a more accurate laser receiver that not only is very accurate and flexible in its operational capabilities, but also can greatly reduce the effect of rotational offset due to shading of the photocell. In one embodiment, a very long photocell is provided in which multiple split-cells are used to present a geometry that will tend to negate some of the effects of shading. The shading effects are minimized by having a different active photocell area along each vertical edge of the photocell. In another embodiment, a "segmented" photocell is used, in which the split-cell design of a long photocell is also divided into vertical segments. These segments can be re-configured so that alternating segments comprise a mirror image about the longitudinal of the long photocell. Such an arrangement tends to reduce the effect of rotational offset due to shading to an extremely small percentage of error.
    Type: Grant
    Filed: November 16, 1998
    Date of Patent: October 17, 2000
    Assignee: Apache Technologies, Inc.
    Inventor: DuWain K. Ake
  • Patent number: 6112256
    Abstract: A networked system having a host computer and multiple printers with bi-directional communications capabilities is provided in which the setup (configuration) of one printer can be easily communicated to another printer, using NPAP messages. The host computer can be used by a Network Administrator to "read" the setup or configuration information inside each of the printers connected to the network that have the required NPAP bi-directional communications capability. This setup information, once communicated to the host computer, can be stored in a long-term memory, such as a hard disk drive, for future reference. The setup information can also be communicated to one or more printers connected to the network, and such printers can be configured by the setup information in which that information is used either as their initial setup information, or as a modified setup.
    Type: Grant
    Filed: February 8, 1999
    Date of Patent: August 29, 2000
    Assignee: Lexmark International, Inc.
    Inventors: Kevin Patrick Goffinet, Francis Darrell Rafferty, Jr., Gail Marie Songer, James Francis Webb, Jeffrey Keith Wedinger, Lloyd Phillip Young
  • Patent number: 6111654
    Abstract: An improved printer is provided in which one of the "built-in" resident fonts can be effectively replaced by downloading from a host computer (into either Flash memory or the printer's hard disk drive) new or modified data under the same font descriptor as the built-in font. After the replacement font has been received by the printer and stored into a non-volatile memory storage device, the user can choose whether to use the replacement font or the built-in font for a particular document, by use of a printer setting named the "Font Priority." This Font Priority setting has the values of either "Resident" or "Flash/Disk." When the Font Priority setting is set to "Resident," the printer preserves Adobe compatibility by having the PostScript interpreter search the virtual memory first to locate a font that is requested by a print job. If the particular font is found, no other font memory storage device is searched and the copy of the font reference in the virtual memory is selected.
    Type: Grant
    Filed: April 21, 1999
    Date of Patent: August 29, 2000
    Assignee: Lexmark International, Inc.
    Inventors: Brian George Cartier, Scott Timothy Cramer, Edward William Yohon, Jr.
  • Patent number: 6097499
    Abstract: Methods and apparatus for using isochronous data transfer mode to communicate between a host computer and a printer. Preferably, the printer receives a sufficient volume of data from the host, such as a computer, over an isochronous communications channel, to begin but not complete one print pass (i.e., line scan or page scan). Subsequently, the print pass is initiated causing a print mechanism to move a printing device relative to a substrate without interruption. Thereafter, sufficient data to complete the pass without interruption is received over the isochronous communications channel during the print pass. The high speed transfer rates afforded by isochronous data transfer allow for printing to be initiated before all of the data necessary to complete a print operation without interruption is received. Moreover, the size of a printer buffer used to store the print data before printing may be considerably reduced to store only a portion of the data needed for an entire print pass.
    Type: Grant
    Filed: November 14, 1997
    Date of Patent: August 1, 2000
    Assignee: Lexmark International, Inc.
    Inventors: Patrick Alan Casey, Shaun Timothy Love, Timothy John Rademacher, Steven Frank Weed, Charles Thomas Wolfe
  • Patent number: 6091891
    Abstract: An improved printer is provided which includes a series of analog delay elements that operate at a very fast speed, and therefore, can be used in an enhanced mode to further subdivide the slice clock to create a greater variety of gray levels that can be used in continuous tone printing. By using this enhanced mode of continuous tone printing, a full "on" slice can be immediately preceded or followed by a partial slice, under the control of the series of delay elements. The delay elements are automatically calibrated at the beginning of each page to be printed by placing the delay line chain circuit into a "calibrate mode," during which time a clock pulse is provided to the delay line chain so that the chain is repeatedly tested, in increments of one additional delay element at a time, to determine the number of delay elements that are required to cause a time delay that is greater than or equal to the period of the slice-based clock.
    Type: Grant
    Filed: May 9, 1997
    Date of Patent: July 18, 2000
    Assignee: Lexmark International, Inc.
    Inventors: Gary Scott Overall, Thomas Campbell Wade
  • Patent number: 6072585
    Abstract: An improved printer is provided which includes a print engine control program that minimizes the power consumption of the paper-handling devices to allow for a smaller DC power supply. Some of the paper-handling devices are input paper trays, output paper stackers, and a duplexer, which all preferably contain a microcontroller and an individual electric motor drive. The base printer also contains a microcontroller in the print engine that controls the printer's mechanisms and various subassemblies that are used in the laser electrophotographic printing process. To maintain control of the entire paper path, the print engine sends commands to the paper-handling devices, and these devices send responses to these commands. Most of the printer's paper-handling devices receive their electrical power entirely from the base printer, which is supplied as a DC voltage. The print engine avoids the concurrent running of subsystems in cases where the functionality of the printer is not compromised.
    Type: Grant
    Filed: December 12, 1997
    Date of Patent: June 6, 2000
    Assignee: Lexmark International, Inc.
    Inventors: Todd Alan Dutton, David Brian Langer, Jeffrey Thomas Hines, Steven Wayne Parish, Phillip Byron Wright
  • Patent number: 6046817
    Abstract: An improved communications buffer system is provided which dynamically allocates the size and number of buffers to optimally receive and transmit packets of communications data over a communications link, while efficiently using the amount of available memory so as to provide optimal throughput capability with respect to the allocated amount of memory. The printer first determines how much "free" memory is available in its "pool area" and then how best to divide up that pool area into both transmit and receive buffers for a single port. Once the entire pool area has been allocated for these transmit and receive buffers, the communication session can begin between the host computer and the printer for communicating the actual print job data.
    Type: Grant
    Filed: January 22, 1998
    Date of Patent: April 4, 2000
    Assignee: Lexmark International, Inc.
    Inventors: Rickey Carter Brown, Mark Lane Mayberry
  • Patent number: 6038033
    Abstract: An improved printer is provided which includes a separate hardware compression module and hardware decompression module contained within the ASIC of the print engine. A "Request Counter" register is decremented each time memory is requested to store a block of bitmap image data. When the Request Counter decreases to a predetermined value, the current size of the remaining "free memory" space is evaluated. If this free memory is less than another predetermined value (a "low water mark"), then blocks of data that have already been stored in the printer's memory are sent to the compression module to be compressed before the printer literally runs out of free memory, and the printer can continue storing and processing more incoming print job data. By thus preserving some of the free memory, the printer can continue to process or rasterize more print data while the compression hardware simultaneously operates independently to compress one or more blocks of data.
    Type: Grant
    Filed: August 20, 1997
    Date of Patent: March 14, 2000
    Assignee: Lexmark International, Inc.
    Inventors: Michael Donald Bender, Christopher Mark Songer
  • Patent number: 6031624
    Abstract: An improved non-stop, constant velocity laser printer is provided which operates in parallel to both begin printing a particular page of print media while virtually simultaneously receiving further data for that same page from a host computer. Since the communications link between the host computer and the printer is slower than the rate of consumption by the printhead provided with this printer, a certain amount of data for each page is first buffered in the printer before the print media begins to move via the printer's print engine. Since it is important for the printer to receive all of the required data for the entire page before the printhead requires that data for consumption, the printer must decide how much data of that particular page should be buffered within the printer before commanding the print engine to start moving the print media.
    Type: Grant
    Filed: September 8, 1997
    Date of Patent: February 29, 2000
    Assignee: Lexmark International, Inc.
    Inventor: David William Murphy