Patents Assigned to Xerox
  • Electrophotographic photoreceptor, process cartridge and image forming apparatus
    Publication number: 20040086794
    Abstract: An electrophotographic photoreceptor comprising a conductive support and a photosensitive layer disposed on the conductive support, wherein the photosensitive layer comprises a silicon compound-containing layer containing a silicon compound, and the silicon compound-containing layer further contains a resin, and wherein the photosensitive layer has a peak area in the region of −40 to 0 ppm (S1) and a peak area in the region of −100 to −50 ppm (S2) in a 29Si-NMR spectrum satisfying the following equation (1):
    Type: Application
    Filed: August 27, 2003
    Publication date: May 6, 2004
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Wataru Yamada, Katsumi Nukada, Kazuhiro Koseki, Takayuki Yamashita, Masahiro Iwasaki, Takahiro Suzuki
  • Scan non-linearity correction using frequency modulation and synchronization
    Publication number: 20040085438
    Abstract: An electronic circuit is utilized to correct scan non-linearity of a raster output scanner. The circuit modulates a clock frequency to match a scan linearity error profile. Because it is a separate circuit, the exiting closed-loop clock generator does not need to be modified. The correction circuit synchronizes itself with the clock signal using a counter/subtractor phase detector, which ensures that the phase and frequency of the internal clock matches the phase and frequency of the master.
    Type: Application
    Filed: October 30, 2002
    Publication date: May 6, 2004
    Applicant: Xerox Corporation.
    Inventors: Mehrdad Zomorrodi, Steven A. Buhler
  • Systems and methods for integration of heterogeneous circuit devices
    Publication number: 20040084745
    Abstract: A heterogeneous device comprises a substrate and a plurality of heterogeneous circuit devices defined in the substrate. In embodiments, a plurality of heterogeneous circuit devices are integrated by successively masking and ion implanting the substrate. The heterogeneous device may further comprise at least one microelectromechanical system-based element and/or at least one photodiode. In embodiments, the heterogeneous circuit devices comprise at least one CMOS transistor and at least one DMOS transistor. In embodiments, the substrate comprises a layer of silicon or a layer of p-type silicon. In other embodiments, the substrate comprises a silicon-on-insulator wafer comprising a single-crystal-silicon layer or a single-crystal-P-silicon layer, a substrate and an insulator layer therebetween.
    Type: Application
    Filed: December 4, 2003
    Publication date: May 6, 2004
    Applicant: Xerox Corporation
    Inventors: Jingkuang Chen, Yi Su
  • Anti-counterfeiting see-through moire security feature using frequency-varying patterns
    Publication number: 20040084893
    Abstract: Frequency varying patterns are aligned on the front and back surfaces of a document to provide an anti-counterfeiting security device. The frequency varying patterns are reversed images. The document is sufficiently transparent to allow see-through of the pattern on the back of the document to be superimposed on the pattern on the front of the document. The frequency varying patterns will form a moire pattern if misaligned, regardless of the magnitude and the orientation of the misalignment.
    Type: Application
    Filed: October 30, 2002
    Publication date: May 6, 2004
    Applicant: Xerox Corporation
    Inventors: Zhigang Fan, Shen-ge Wang
  • Smooth surface transfuse belts and process for preparing same
    Publication number: 20040086647
    Abstract: Process for preparing durable, re-usable intermediate toner image-transfer belts or electrostatic transfuse belts. The present belts have a continuous elastomer-impregnated fibrous fabric support and at least one outer smooth release layer of a cured elastomer polymer. The invention is characterized by the application of a thin primer layer of a hydrolyzable polyfunctional silicone composition between the elastomer-coated surface of the fabric support and the outer elastomer polymer layer. The polyfunctional silicone chemically-bonds to the elastomer of the fabric support during hydrolysis and chemically-bonds to the outer elastomer layer during its cure, to form a durable, heat-resistant transfuse belt. The layers maybe applied to the fabric support by spray application as dilute solutions.
    Type: Application
    Filed: October 22, 2003
    Publication date: May 6, 2004
    Applicant: Xerox Corporation
    Inventors: Joseph A. Swift, Donald Stanton
  • Anti-counterfeiting see-through security feature using line patterns
    Publication number: 20040084894
    Abstract: Patterns are aligned on the front and back surfaces of a document to provide an anti-counterfeiting security device. The document is sufficiently transparent to allow see-through of the partial image on the back of the document to be superimposed on the partial image on the front of the document to form a complete image if the patterns are properly aligned. The complete image will disappear if misaligned.
    Type: Application
    Filed: October 30, 2002
    Publication date: May 6, 2004
    Applicant: Xerox Corporation
    Inventors: Zhigang Fan, Shen-ge Wang
  • Normalization of head driver current for solid ink jet printhead by current slop adjustment
    Publication number: 20040085373
    Abstract: Circuitry for providing a method (semi-analog) for normalization procedure of the Head Driver ASIC is disclosed. The circuitry utilizes current DAC's (Digital-to-Analog Converts) to adjust the amplitudes of the voltages across piezo-electric elements, based on predetermined normalization (calibration) data which are stored in separate latches (a different normalization data for each individual transducer). The transducers all receive their respective calibrated voltage values all at the same time utilizing a single current slope delivered to each. This method provides more simplicity and more accuracy for normalization procedure and results in better performance then using digital circuitry and digital counters.
    Type: Application
    Filed: October 30, 2002
    Publication date: May 6, 2004
    Applicant: Xerox Corporation
    Inventor: Mostafa R. Yazdy
  • Anisotropic stochastic screen
    Publication number: 20040085588
    Abstract: A system and method for the halftoning of gray scale images by utilizing a pixel-by-pixel comparison of the image against an anisotropic stochastic screen is disclosed. The anisotropic stochastic screen comprises a non-deterministic, non-white noise function which, when thresholded, is designed to produce anisotropic dot patterns having a power spectrum characterized as having negligible low frequency components and a high-frequency region which has an absence of stronger dominant spikes.
    Type: Application
    Filed: October 31, 2002
    Publication date: May 6, 2004
    Applicant: Xerox Corporation
    Inventors: Robert P. Loce, Beilei Xu, Shen-Ge Wang
  • Copper interconnect by immersion/electroless plating in dual damascene process
    Publication number: 20040084320
    Abstract: A method of fabrication of copper interconnect by means of copper electroplating is disclosed. In the conventional method of fabricating copper interconnect for integrated circuits, critical steps such as deposition of copper seed layer and chemical mechanical polishing (CMP) are required. However in this invention, both the seed layer deposition and CMP are not required.
    Type: Application
    Filed: October 30, 2002
    Publication date: May 6, 2004
    Applicant: Xerox Corporation
    Inventor: Kaiser H. Wong
  • Image stripping member, and image stripping apparatus and image stripping method using the image stripping member
    Publication number: 20040086308
    Abstract: An image stripping apparatus includes: a stripping roller which strips an image forming material from an image recording medium by contacting the image forming material on the image recording medium; a cleaning roller for removing, from the stripping roller, the image forming material which has been transferred to the stripping roller; and a cleaning blade stripping the image forming material from the cleaning roller. The stripping roller has a surface layer made of a material having affinity and releasability with respect to the image forming material and the image recording medium. Thus, the stripping roller exhibits peelability required for stripping of the image forming material from the image recording medium and releasability required for removal of a transferred image forming material from the stripping roller.
    Type: Application
    Filed: August 20, 2003
    Publication date: May 6, 2004
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Tomoo Kobayashi, Kaoru Torikoshi, Tadakazu Ezure
  • Normalization of head driver current for solid ink jet printhead
    Publication number: 20040085090
    Abstract: Circuitry for providing a method (semi-analog) for normalization procedure of the Head Driver ASIC is disclosed. The circuitry utilizes current DAC's (Digital-to-Analog Converts) to adjust the amplitudes of the voltages across piezo-electric elements, based on predetermined normalization (calibration) data which are stored in separate latches (a different normalization data for each individual transducer). The transducers all receive their respective calibrated voltage values all at the same time by varying the current slope delivered to each. This method provides more simplicity and more accuracy for normalization procedure and results in better performance then using digital circuitry and digital counters.
    Type: Application
    Filed: October 30, 2002
    Publication date: May 6, 2004
    Applicant: Xerox Corporation
    Inventor: Mostafa R. Yazdy
  • Planning and scheduling reconfigurable systems around off-line resources
    Publication number: 20040088207
    Abstract: A system is provided to allow for planning and scheduling the work flow for reconfigurable production systems having a plurality of modules, which may have alternative capabilities. The system includes a system controller, at least one planning function for planning the production of work units without utilizing off-line modules, and at least one scheduling function for scheduling the production of work units without utilizing off-line modules.
    Type: Application
    Filed: October 30, 2002
    Publication date: May 6, 2004
    Applicant: Xerox Corporation
    Inventor: Markus P.J. Fromherz
  • System and method for copying formatting information between Web pages
    Publication number: 20040088653
    Abstract: A system and method for copying formatting information between group editable Web pages is provided. The system includes a web server and devices, such as computers, which can communicate via a network. Users at the computers can access one or more of the Web pages and request that the accessed page's formatting information be copied over to one or more specified target Web pages. The Web server is configured to extract a first set of formatting information, such as HTML formatting templates, from a source web page displayed on one or more computers in the network. Further, the Web server replaces a corresponding second set of formatting information in the target Web page(s) with the first set of extracted formatting information.
    Type: Application
    Filed: November 5, 2002
    Publication date: May 6, 2004
    Applicant: Xerox Corporation
    Inventors: David G. Bell, Eric A. Bier, Bay-Wei Chang
  • Toner extruder feed apparatus
    Publication number: 20040087764
    Abstract: A toner extruder method for the preparation of a toner resin extrudate from a resin is provided. The method includes conveying a base resin to an aperture in a housing of a toner extruder, the housing surrounding a conveyor, providing a lead-in gap at a feed port end of the conveyor, inhibiting adhesion of melted resin to walls of the aperture, adding chemical initiator to a toner extruder, mixing the base resin and the chemical initiator within the extruder to form the mixed resin, and conveying the mixed resin within the extruder to an extruding die. Inhibiting adhesion can include repelling melted base resin into a flow of base resin, inhibiting heat transfer from the extruder to the base resin at the aperture by, for example, spacing at least one of the housing and the conveyor from the resin at the aperture.
    Type: Application
    Filed: October 24, 2003
    Publication date: May 6, 2004
    Applicant: Xerox Corporation
    Inventor: Fumii Higuchi
  • Catalytic converter unit with dirt pre-filter
    Patent number: 6730273
    Abstract: A catalytic converter unit for pre-filtering dirt particles from a gas discharge containing an ozone-laden gas discharge from electrographic copy machines, in advance of the passage of the gas discharge through a gas-neutralizing catalyst bed, to exclude the passage of the dirt particles which can cause contamination and degradation of the catalyst, and plugging of the catalyst bed resulting in reduced gas-permeability and the creation of a significant pressure drop thereacross which interferes with or substantially reduces the rate of gas flow through the unit. The catalytic converter units incorporate an easily-removable, cleanable and/or replaceable dirt filter screen which is supported for simple removal from the unit for periodic cleaning or replacement.
    Type: Grant
    Filed: December 2, 1999
    Date of Patent: May 4, 2004
    Assignee: Xerox Corporation
    Inventor: Elliot D. Ramos
  • Secure data file erasure
    Patent number: 6731447
    Abstract: A process that ensures the destruction of data files a user wishes to completely erase from a storage medium, such as a hard drive or removable disk. A system administrator can select a quantity of and pattern to be used in overwrites of the data file so that no one can recover the data from the storage medium. In embodiments, a graphical user interface (GUI) can be provided to allow user triggering of and parameter setting for the process. The GUI can be implemented at a device in which the storage medium is a component or can be implemented in a device driver GUI on a personal computer in communication with the device.
    Type: Grant
    Filed: June 4, 2001
    Date of Patent: May 4, 2004
    Assignee: Xerox Corporation
    Inventors: Keith G. Bunker, Edward P. deJong
  • Graphical user interface for color transformation table editing that avoids reversal artifacts
    Patent number: 6731796
    Abstract: A transformation function defines a relationship between a first color space and a second color space. The transformation function is edited by producing first and second outputs of an image in the first and second color spaces, respectively. The outputs are related in accordance with the transformation function. A portion of the first output, which corresponds to a portion of the second output including a color to be modified, is selected via a graphical user interface. A desired amount to modify the color is specified. A correction function is determined in accordance with the desired amount. The transformation table is edited in accordance with the monotonic correction function.
    Type: Grant
    Filed: December 6, 2000
    Date of Patent: May 4, 2004
    Assignee: Xerox Corporation
    Inventors: Martin S. Maltz, R. Victor Klassen, Thyagarajan Balasubramanian
  • Meta-document management system with user definable personalities
    Patent number: 6732090
    Abstract: A system operates using meta-documents which include document content associated with one or more personalities. Each personality is associated with a set of document service requests. Users are provided different techniques for creating personalities and modifying existing personalities. These techniques include: the use of an algebra to tailor existing personalities, the use of a list of links or documents to create a personality, the use of predefined personalities and knowledge levels in a field to create new personalities, the use of question answering techniques, and the use of learning personalities. Specified personalities are then used to enrich document content by integrating into corresponding meta-documents the results received from their document service requests.
    Type: Grant
    Filed: December 5, 2001
    Date of Patent: May 4, 2004
    Assignee: Xerox Corporation
    Inventors: James G. Shanahan, Gregory T. Grefenstette, Christer Fernstrom, Laurence Hubert
  • Phase change ink formulation containing a combination of a urethane resin, a mixed urethane/urearesin, a mono-amide and a polyethylene wax
    Patent number: 6730150
    Abstract: Phase change ink carrier compositions comprising an admixture of (1) at least one urethane resin; and/or (2) at least one mixed urethane/urea resin; and/or (3) at least one mono-amide; and/or (4) at least one polyethylene wax are provided. In addition, a phase change colored ink of such carrier compositions comprising a phase change ink compatible colorant are also provided. Embodiments of the present invention also include methods for producing a layer of the above phase change colored ink on the surface of a substrate by either direct or indirect printing. Such methods also encompassing using a polyethylene wax as an overcoat layer above such a phase change ink layer on a printed substrate.
    Type: Grant
    Filed: September 5, 2000
    Date of Patent: May 4, 2004
    Assignee: Xerox Corporation
    Inventors: Donald R. Titterington, Jeffrey H. Banning
  • System and method for generating color digital watermarks using conjugate halftone screens
    Patent number: 6731409
    Abstract: The present invention is directed to an improved method for producing color watermarks in digitally reproducible color documents. The color watermarks are generated by producing a halftone pattern, which appears as stochastically distributed dots, in at least one or more color separations of the color document. A second halftone pattern, which also appears as stochastically distributed dots and is spatially displaced from the first halftone pattern, is generated in at least one or more different color separations. Portions of the first and second halftone patterns are auto-correlated or conjugally correlated, therefore, when the two halftone patterns are laid over each other, watermark patterns of highly contrasting colors become markedly visible.
    Type: Grant
    Filed: January 31, 2001
    Date of Patent: May 4, 2004
    Assignee: Xerox Corporation
    Inventor: Shen-ge Wang