Patents Assigned to Xerox
  • Patent number: 6740429
    Abstract: An organic light emitting device containing (i) an anode or a first electrode; (ii) a hole transport layer containing, for example, a mixture of a porphyrin and a hole transport material (iii) a mixed region containing a mixture of (1) a hole transport material, and (2) an electron transport material; (iv) a cathode or second electrode, and wherein the organic light emitting device may further contain at least one of (v) an electron transport region interposed between the mixed region and the cathode; and (vi) a thermal protective element coated on one of the anode and cathode.
    Type: Grant
    Filed: November 8, 2001
    Date of Patent: May 25, 2004
    Assignee: Xerox Corporation
    Inventors: Hany Aziz, Cuong Vong, Nan-Xing Hu, Zoran D. Popovic, Ah-Mee Hor
  • Patent number: 6741745
    Abstract: Following scanning of a document image, and optical character recognition (OCR) processing, the outputted OCR text is processed to determine a text format (typeface and font size) to match the OCR text to the originally scanned image. The text format is identified by matching word sizes rather than individual character sizes. In particular, for each word and for each of a plurality of candidate typefaces, a scaling factor is calculated to match a typeface rendering of the word to the width of the word in the originally scanned image. After all of the scaling factors have been calculated, a cluster analysis is performed to identify close clusters of scaling factors for a typeface, indicative of a good typeface fit at a constant scaling factor (font size).
    Type: Grant
    Filed: December 18, 2000
    Date of Patent: May 25, 2004
    Assignee: Xerox Corporation
    Inventors: Christopher R. Dance, Mauritius Seeger
  • Patent number: 6739690
    Abstract: A drop emitting device that includes a drop generator and a drive signal waveform that includes in sequence a first negative pulse, a positive pulse and a second negative pulse.
    Type: Grant
    Filed: February 11, 2003
    Date of Patent: May 25, 2004
    Assignee: Xerox Corporation
    Inventor: Douglas D. Darling
  • Patent number: 6741751
    Abstract: A primary pixel of interest within an image is processed by receiving colors, defining a plurality of pixels in a primary sub-neighborhood of pixels included within a neighborhood of pixels, into a processor. The primary pixel of interest is included within the primary sub-neighborhood. A determination is made if a border exists between first and second regions within the primary pixel of interest. If the border exists within the primary pixel of interest, a plurality of secondary sub-neighborhoods of pixels, which are included within the neighborhood and that potentially include the border, are determined. A determination is made if the border exists between the first and the second regions within respective secondary pixels of interest in the secondary sub-neighborhoods. If the border exists within a predetermined number of the pixels of interest, respective amounts of coverage for first and second colors are identified within a plurality of scaled up pixels corresponding to the primary pixel of interest.
    Type: Grant
    Filed: August 18, 2000
    Date of Patent: May 25, 2004
    Assignee: Xerox Corporation
    Inventor: R. Victor Klassen
  • Patent number: 6741818
    Abstract: A relatively thin feature information board placed in an essentially upright position proximate to the rear top surface of a multifunctional printer for conveying information concerning the feature capabilities of the printer. The feature information board is generally taller than other features of the marking engine module of the multifunctional printer. The feature information board may contain an active interface region that conveys information concerning the availability of the multifunctional services and status information such as, fault conditions, completion of jobs, and that jobs are in progress.
    Type: Grant
    Filed: December 17, 2002
    Date of Patent: May 25, 2004
    Assignee: Xerox Corporation
    Inventors: Mark S. Penke, Kenneth J. Rieck, William Theodore Clark, III, Donald A. Brown
  • Patent number: 6739713
    Abstract: An ink stick for use in a solid ink feed system of a phase change ink printer includes a three dimensional ink stick body that has formed in it guide means. The guide means is formed in a first portion of the ink stick body, for guiding the ink stick along a defined path in the ink stick feed system. An ink stick feed system includes a longitudinal guide rail in a first portion of a feed channel. The width of the longitudinal guide rail is substantially less than the width of the feed channel the guide means in the ink stick is a longitudinal guide element having a shape that is substantially complementary of the shape of the longitudinal guide rail of the feed channel.
    Type: Grant
    Filed: April 29, 2002
    Date of Patent: May 25, 2004
    Assignee: Xerox Corporation
    Inventors: Brent R. Jones, Frederick T. Mattern
  • Patent number: 6741741
    Abstract: A method for identifying document edges collects a predetermined number scanlines of the document against a light backing and a dark backing. A first set of first-order statistics are calculated from the image data obtained by scanning the document against the light backing. A second set of first-order statistics are calculated from the image data obtained by scanning the document against the dark backing. A document edge is detected using the first and second sets of first-order statistics.
    Type: Grant
    Filed: February 1, 2001
    Date of Patent: May 25, 2004
    Assignee: Xerox Corporation
    Inventor: Barbara L. Farrell
  • Patent number: 6740530
    Abstract: Methods for testing proper operation of drop ejection units in a multi-ejector system are provided to determine whether the drop ejectors have been properly filled and/or the ejectors are emitting fully formed droplets. The methods include testing the ejectors prior to drop ejection. In this method, a priming system is used wherein fluid received by the priming system is ejected onto a test substrate to allow a scanner to determine the existence of the fluids at selected locations. The selected locations are correlated to the drop ejection units to determine which ejection units do not have biofluid or sufficient biofluid. A further method allows for ejection prior to printing, on a test substrate wherein testing for both the fullness of the ejector units as well as proper emission of the ejectors of droplets may be tested. The ejectors after being primed, eject the biofluids which are then scanned and correlated to each individual ejector.
    Type: Grant
    Filed: November 22, 2000
    Date of Patent: May 25, 2004
    Assignee: Xerox Corporation
    Inventors: Richard H. Bruce, Scott A. Elrod, Jaan Noolandi, David A. Horine, Babur B. Hadimioglu
  • Patent number: 6741270
    Abstract: Conventionally, text boxes are used to inform an image capture device of the size of an area to which a captured image will need to be scaled, when fitting the captured image into that area of the composite document. In contrast, size selection systems, methods and graphical user interfaces allow the user to select one of a number of predetermined sets of scale dimensions that the captured image is to be scaled to. The size selection systems, methods and graphical user interfaces provide an alternative method for specifying the dimensions that a captured image is to be scaled to. In various exemplary embodiments of the size selection systems, methods and graphical user interfaces, an image size tab of a graphical user interface for an image capture driver includes a scale portion. The scale portion, in addition to having a number of dimension boxes that allow the user to directly input the desired dimensions to which the captured image is to be scaled, also includes a dimension list box.
    Type: Grant
    Filed: January 19, 2000
    Date of Patent: May 25, 2004
    Assignee: Xerox Corporation
    Inventors: Kristinn R. Rzepkowski, Rudolph A. Rodrigues
  • Patent number: 6739693
    Abstract: Current fluid ejector maintenance techniques do not adequately deal with moveable debris particles present in the fluid supply manifold. Such moveable particles within the fluid supply manifold of a fluid ejector head can cause random ejection defects by clogging, restricting and/or blocking the channel inlets and/or filters present in the channel inlets, causing missed or misfired and/of misdirected drops. At least some of a plurality of fluid ejectors can be fired in a sequential pattern. Sequentially firing the fluid ejectors can move movable particles in the direction of the firing sequence. The moved movable particles can be deposited into non-operative areas within the fluid supply manifold, such as, for example, non-firing fluid ejection locations. The fluid ejectors can be fired in a sequential pattern within blocks of the fluid ejectors. For example, a fluid ejector head with 120 fluid ejectors can fire 1 out of every 20 fluid ejectors.
    Type: Grant
    Filed: January 15, 2003
    Date of Patent: May 25, 2004
    Assignee: Xerox Corporation
    Inventor: Michael C. Ferringer
  • Patent number: 6741387
    Abstract: The present invention provides a display element, which is driven at a low voltage, displays a high-contrast image with few density irregularities, and has improved image holding property. In a display element, which displays an image by moving, between a first and second substrate, particles having different colors and charge polarities by an electric field applied between the first and second substrates, the surface roughness of at least one of the substrates is 1 nm to 1 &mgr;m, the coefficient of shape is 100 to 140, the width and depth of the recessed part are not identical to the diameter of the particles and the contacting parts of the recessed part and the particles do not form a surface.
    Type: Grant
    Filed: August 20, 2002
    Date of Patent: May 25, 2004
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Kiyoshi Shigehiro, Kiyokazu Mashimo, Kenji Yao, Hiroshi Miyamoto, Kyoko Nishikawa, Yasufumi Suwabe, Yoshinori Machida, Takeshi Matsunaga, Yoshiro Yamaguchi, Motohiko Sakamaki, Katsumi Nukada
  • Patent number: 6741826
    Abstract: A cam mechanism for a printer that includes a cam including an active cam surface having a continually increasing radius over an active cam angle, a biased cam follower in contact with the active cam surface, and a drive mechanism for rotating the cam such that only the active cam surface contacts the cam follower.
    Type: Grant
    Filed: June 26, 2002
    Date of Patent: May 25, 2004
    Assignee: Xerox Corporation
    Inventors: Daniel C. Park, David W. Johnson
  • Patent number: 6740152
    Abstract: There are provided a recording liquid that produces high-quality images having a very high image density and water resistance, and can be discharged continuously and stably; a method for manufacturing such a solution; and a method for recording images by the use of such a solution. The recording liquid for ink printers according to the present invention contains a pigment and at least two kinds of fine resin particles, wherein the dispersion polarity of the pigment is the same as the dispersion polarity of each of the two or more kinds of fine resin particles. The method for manufacturing a recording liquid for ink printers has the step of mixing an aqueous dispersion of a pigment, and an aqueous dispersion of the two or more kinds of fine resin particles each having a polarity the same as the polarity of the aqueous dispersion of the pigment.
    Type: Grant
    Filed: June 22, 2000
    Date of Patent: May 25, 2004
    Assignee: Fuji Xerox Co., Ltd.
    Inventor: Yuzuru Fukuda
  • Publication number: 20040096122
    Abstract: A method and a system for separating an image signal into a set of image planes. The system comprises a min-max module, a dynamic threshold module and a separation module. The min-max module receives the image signal, searches for a minimum and maximum within at least one window centered on a current pixel in the image signal. The dynamic threshold module computes, for the window, based on the respective minimum and maximum received from the min-max module and the current pixel, a respective indicator representing the distance and direction of the current pixel relative to a respective threshold plane, and outputs a control signal based on the indicator. The separation module separates the image signal into the set of image planes in accordance with the control signal by including a representation of the current pixel in at least one of the image planes.
    Type: Application
    Filed: July 1, 2003
    Publication date: May 20, 2004
    Applicant: Xerox Corporation
    Inventors: Donald J. Curry, Doron Kletter, Asghar Nafarieh
  • Publication number: 20040096761
    Abstract: A photoconductive imaging member containers of a supporting substrate, and thereover a single layer comprised of a mixture of a photogenerator component, a charge transport component, an electron transport component, and a polymer binder, and wherein the photogenerating component is a pigment.
    Type: Application
    Filed: November 20, 2002
    Publication date: May 20, 2004
    Applicant: Xerox Corporation
    Inventors: Liang-Bih Lin, Richard H. Nealey, Ah-Mee Hor, James M. Duff, Timothy P. Bender, Andrew R. Melnyk, Andronique Ioannidis, Harold F. Hammond, Linda L. Ferrarese, Cindy C. Chen, James M. Markovics, Kenny-Tuan T. Dinh
  • Publication number: 20040098508
    Abstract: The present invention provides an image processing device and an image processing method, which prevent printing mishaps from occurring in printed matter when a user performs a printing process by using a machine plate without knowing a compressed image is included on a page layout. In the print server, when a compressed image on a page layout is detected, a warning is generated to request selection of the next process. For this reason, when interruption of printing is designated, the printing process is interrupted. Drawing using a warning color or application of an outline is designated, and a drawing setting is performed according to the designation. An output of a warning page is designated, and a setting is performed such that a print output is obtained by either extracting a compressed image or by deleting a compressed image.
    Type: Application
    Filed: March 18, 2003
    Publication date: May 20, 2004
    Applicant: Fuji Xerox Co., Ltd.
    Inventors: Ryuichi Ishizuka, Mari Kodama, Yasushi Nishide
  • Publication number: 20040098581
    Abstract: We present technology that allows layman computer users to simply create, provision, and maintain secured infrastructure—an instant PKI. This technology can be used in a wide variety of applications including wired and wireless networks, secure sensor networks (such as medical networks), emergency alert networks, as well as simply and automatically provisioning network devices whether secure or not.
    Type: Application
    Filed: September 5, 2003
    Publication date: May 20, 2004
    Applicant: Xerox Corporation
    Inventors: Dirk Balfanz, Diana K. Smetters, Paul Joseph Stewart, Glenn E. Durfee, Rebecca E. Grinter, Hao-Chi Wong
  • Publication number: 20040095369
    Abstract: A haptic interface device includes a detection section for detecting the state of operation on an operating section performed by an operator or the position of the operating section and outputting a signal indicating the detected state or position; a driving section for electromagnetically driving the operating section to provide a reaction force to the operator; and a control section for controlling the driving section according to the signal output from the detection section and based on interface definition information in which is defined specification information for the operating section to behave as an interface apparatus. The control section produces a reaction force corresponding to the operation performed by the operator to provide an operational feeling that would be produced by the interface apparatus behaved by the operating section when operated.
    Type: Application
    Filed: March 5, 2003
    Publication date: May 20, 2004
    Applicant: Fuji Xerox Co., Ltd.
    Inventors: Shin Takeuchi, Kazuyuki Tsukamoto, Katsumi Sakamaki
  • Publication number: 20040096102
    Abstract: An adaptive image segmentation system and methodology based on Mixed Raster Content (MRC) format. A L*a*b* color image is processed into an object-based MRC representation. By using L*a*b* data, an expectation-maximization algorithm is used to estimate a mixture of two 3-D Gaussians, with one Gaussian representing the background pixels and the other the foreground pixels. A resultant-quadratic decision surface is calculated and all image pixels are compared against it. Depending on which side of the decision surface any given pixel falls, that pixel goes to either the background or foreground plane. The pixel-by-pixel decisions are used to comprise a mask plane. The mask plane is converted into run lengths, which are “cleaned”, and regions are merged. Large connected components are reserved as windows and are used to mask out portions of the foreground. The result is a background plane, a mask plane, a foreground plane and any number of foreground/mask pairs, consistent with the ITU T.
    Type: Application
    Filed: November 18, 2002
    Publication date: May 20, 2004
    Applicant: Xerox Corporation
    Inventor: John C. Handley
  • Patent number: 6738080
    Abstract: A document processing control system with a graphical user interface having a display is provided. The document processing system further includes a memory manager for determining whether the information of the information set is of a first type or a second type. The memory manager uses a first information processing mode to control display of the information when the information is of the first type and a second information processing mode to control display of the information when the information is of the second type.
    Type: Grant
    Filed: October 29, 1998
    Date of Patent: May 18, 2004
    Assignee: Xerox Corporation
    Inventors: Robert J. Dash, Donald Irwin