Patents Assigned to Xerox
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Patent number: 6254222Abstract: Through-holes serving as common liquid chambers 5 are formed in a flow channel substrate 1 by a wet anisotropic etching process. One opened end of each through-hole serves as a liquid inlet 4. Trenches rectangular in cross section, which are used as liquid flow channels 7, are formed in the flow channel substrate by RIE process. Each liquid flow channel 7 includes a front constriction 41 formed near its associated discharge orifice 9 and a rear constriction 42 formed near a connection portion between the channel and the common liquid chamber 5. The common liquid chamber 5 is communicatively connected to the liquid flow channel 7 in a linear fashion, and a portion of the liquid flow channel 7 between the front constriction 41 and the rear constriction 42 may be designed to be broad. Therefore, the flow channel resistance is reduced, the liquid jetting efficiency is improved, and the liquid re-supplying is performed at high speed.Type: GrantFiled: November 27, 1998Date of Patent: July 3, 2001Assignee: Fuji Xerox Co., Ltd.Inventors: Michiaki Murata, Regan Nayve, Atsushi Fukugawa, Masahiko Fujii
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Patent number: 6255649Abstract: A charging device comprises a housing defining a charging chamber. Two tensioning shafts are mounted on opposite ends of the housing. The charging device comprises a control grid attached to the grid tensioning shafts, thus substantially covering the chamber opening. The control grid is comprised of a conductive material capable of being stretched along its length. As a result, the grid becomes flat when opposing rotating forces are applied to the two tensioning shafts.Type: GrantFiled: July 29, 1999Date of Patent: July 3, 2001Assignee: Xerox CorporationInventors: Alfred J. Claflin, Jr., Andrew J. Bonacci, David A. D'Angelantonio, Jaime Soley
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Patent number: 6254226Abstract: A fluid cartridge, such as a cartridge for filling with ink for use in ink jet printhead includes a wick chamber that has outer walls, including a top wall, and an ink chamber formed of a plurality of outer walls. A fluid conduit connects the ink chamber and the wick chamber. The outer walls of the ink chamber are formed to provide no fluid communication between the ink chamber and the ambient environment, except through the fluid conduit and the wick chamber. A vent opening through the top wall of the wick chamber provides communication between the wick chamber and the ambient environment, and an outlet opening through an outer wall other than the top wall of the wick chamber provides fluid communication for the ink to flow from the wick chamber. A vent tube extends from the vent opening into the interior of the wick chamber, and projections extend from the top wall of the wick chamber into the interior of the wick chamber, farther than does the vent tube.Type: GrantFiled: July 14, 2000Date of Patent: July 3, 2001Assignee: Xerox CorporationInventors: Dennis M. Lengyel, Hiep H. Nguyen
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Patent number: 6254943Abstract: A transfer sheet including a substrate; and an indicator.Type: GrantFiled: June 21, 1999Date of Patent: July 3, 2001Assignee: Xerox CorporationInventor: Helen A. Osbourne
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Publication number: 20010005568Abstract: A toner composition comprised of binder, colorant, and a surface additive of a coated silica and wherein said silica possesses a BET surface area, in m2/g of from about 35 to about 65, a bulk density, in grams/liter, of from about 40 to about 60, and and wherein the size diameter determined from the BET measurement is from about 20 to about 100 nanometers.Type: ApplicationFiled: February 2, 2001Publication date: June 28, 2001Applicant: Xerox CorporationInventors: Jeffrey H. Sokol, Edward J. Gutman
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Publication number: 20010005059Abstract: A three-dimensional semiconductor integrated circuit apparatus which permits ready electrical connection and is resistant to deformation and easy to fabricate and a manufacturing method therefor are provided. A second semiconductor substrate is stacked over a third semiconductor substrate, and a first semiconductor substrate is stacked over the second semiconductor substrate. A second integrated circuit is formed over the surface layer of the second semiconductor substrate, and the integrated circuit side of the second semiconductor substrate is bonded to the integrated circuit side of the first semiconductor substrate, resulting in the electrical connection of the first integrated circuit formed over the surface layer of the first semiconductor substrate and the second integrated circuit.Type: ApplicationFiled: December 26, 2000Publication date: June 28, 2001Applicant: FUJI XEROX CO., LTD. and Mitsumasa KoyanagiInventors: Mitsumasa Koyanagi, Yasunori Okano, Nobuaki Miyakawa
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Patent number: 6252680Abstract: A system and method which enables the location and orientation of an image to be determined without introducing scanning artifacts into the rendered image. The system utilizes a separate set of sensors on a scanning bar that are sensitive to a wavelength of light outside the range of wavelengths of the typical sensors found on the scanning bar, such as red, green, or blue. Moreover, the system includes a light source which is capable of emitting the wavelength of light that is outside this range of wavelength of light. Thus, whenever the additional set of sensors detect light, the system would determine that the light was due to a scanning artifact, such as a hole, rip, or dog ear in the original document being scanned.Type: GrantFiled: January 8, 1998Date of Patent: June 26, 2001Assignee: Xerox CorporationInventors: Stuart A. Schweid, Leon C. Williams
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Patent number: 6250749Abstract: A fluid cartridge, such as a cartridge for filling with ink for use in ink jet printhead includes a housing enclosing a wick chamber, the housing including a top wall. The housing also includes an ink chamber. A fluid conduit connects the ink chamber and the wick chamber. The outer surface of the top wall of the housing is formed with a recess. A vent opening through the top wall of the wick chamber, at the recess, provides communication between the wick chamber and the recess. A covering over the top surface of the housing encloses the recess. An outlet opening through an outer wall other than the top wall of the wick chamber provides fluid communication for the ink to flow from the wick chamber. One end of an overflow tube is in fluid communication with the recess in the top wall of the housing.Type: GrantFiled: July 14, 2000Date of Patent: June 26, 2001Assignee: Xerox CorporationInventors: Eric A. Merz, Hiep H. Nguyen, Edward M. Carrese, Dennis M. Lengyel
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Patent number: 6252975Abstract: A method and system for real time converting a dynamic video to a set of static image frames includes segmenting the video into a plurality of frames. Significant parts of the frames are selected to comprise interest points. An operator estimates a motion trajectory of the interest points for real time computing of a global motion. Upon detection of global motion, selected key frames are selected from the set of static frames to represent the dynamic video. Interest points are identified as areas of high gradient and are further minimized by limiting interest points by imposing a grid on image frame and limiting the interest points to one point per grid cell.Type: GrantFiled: December 17, 1998Date of Patent: June 26, 2001Assignee: Xerox CorporationInventors: Gozde Bozdagi, Robert Bryll
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Patent number: 6252580Abstract: A method for mapping highlight colors to monochromatic textures is provided. It includes reading an input highlight color having a highlight color amount and a base color amount. The highlight color amount is measured and the base color amount is measured. A halftone cell (50) is defined having a plurality of output regions with corresponding output states. The output states of all the output regions are controlled in response to the measured base color amount. The output state of at least one but less than all the output regions is controlled in response to the measured highlight color amount such that the output state of at least one but less than all of the output regions is controlled by both the measured base color amount and the measured highlight color amount.Type: GrantFiled: July 9, 1998Date of Patent: June 26, 2001Assignee: Xerox CorporationInventor: Steven J. Harrington
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Patent number: 6251987Abstract: An aqueous ink jet ink composition comprised of water, colorant, and colored resin emulsion particles generated from olefinic monomers, wherein at least one of said olefinic monomers contains a colorant, wherein the olefinic colorant component is prepared from the condensation reaction of a functional colorant with an olefinic containing reactive material, and which reaction generates: wherein Dye represents a colorant chromophore, and R is a carbonyl, carboxylate, oxygen, or arylene, and R′ is hydrogen or alkyl.Type: GrantFiled: July 31, 1997Date of Patent: June 26, 2001Assignee: Xerox CorporationInventors: Guerino G. Sacripante, Garland J. Nichols, Min-Hong Fu, Chieh-Min Cheng, Daniel G. Marsh
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Patent number: 6252681Abstract: A method is provided for a multifunctional printing system in which a plurality of jobs are placed in a queue in anticipation of processing the same. The queue, over time, receives jobs of at least a first user type and a second user type. In operation, first and second jobs of the first user type are placed in the queue. When a third job is ready for placement into the queue, a determination as to whether the third job is of the first user type or the second user type is made. If the third job is of the first user type, then it is processed subsequent to the processing of both the first and second jobs; however, if the third job is of the second user type, then the third job is processed ahead of at least the second job.Type: GrantFiled: January 29, 1998Date of Patent: June 26, 2001Assignee: Xerox CorporationInventors: Donald J. Gusmano, David L. Salgado, Jeffrey D. Debes, Gary W. Kassmann, Kenneth J. Buck
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Patent number: 6252780Abstract: Semiconductor chips, such as photosensor arrays in a full-width scanner, are mounted on printed wiring boards. The printed wiring boards are in turn mounted on a second layer of printed wiring board material. The two layers of printed wiring board material are attached so that the seams between adjacent printed wiring boards in each layer alternate in a brick-like fashion. This structure enables arrays of semiconductor chips to be constructed in relatively long lengths, with minimal risk of damage caused by thermal stresses.Type: GrantFiled: July 31, 1998Date of Patent: June 26, 2001Assignee: Xerox CorporationInventor: Kraig A. Quinn
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Patent number: 6253056Abstract: An apparatus for removing electrostatically charged particles from a surface such as the backside of an image bearing belt of the type found in an electrostatographic printing apparatus or a drive roller supporting an image bearing belt. The apparatus includes an electrically biased foam pad having a conductive substrate and conductive foam material extending outwardly therefrom to contact the surface to be cleaned, a supporting device, and a cleaning device for removing collected particles from the foam pad. The supporting device for the foam pad rotates, thereby causing clean foam material to contact the surface to be cleaned.Type: GrantFiled: November 24, 1999Date of Patent: June 26, 2001Assignee: Xerox CorporationInventors: Nero R. Lindblad, James M. Casella, James C. Diehl, Richard L. Carlston, James F. Smith
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Patent number: 6253217Abstract: A document management system is provided which organizes, stores and retrieves documents according to properties attached to the documents. A property attachment mechanism allows a user to attach arbitrary static and active properties to a document. The active properties include executable code which dynamically change system configuration of the document in response to a triggering event which is predefined by the user. The present invention eliminates the generally tedious and error-prone process of configuring and reconfiguring an existing system configuration in response to new or changing user needs.Type: GrantFiled: August 31, 1998Date of Patent: June 26, 2001Assignee: Xerox CorporationInventors: James P. Dourish, Warren K. Edwards, Anthony G. LaMarca, John O. Lamping, Karin Petersen, Michael P. Salisbury, Douglas B. Terry, James D. Thornton
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Patent number: 6250733Abstract: A method of operating a printing system that can print any of several different colors onto a point on a sheet of printer media. The method includes using a halftoning screen with a matrix of assorted threshold values, along with image data having a matrix of image data elements. For each data element and each color, a density value is determined to establish the amount of each color needed to produce the color associated with the original data element. Then a calculation determines which of the colors will be printed to the particular location. In a selected sequence of colors, density values of the colors are added one by one to generate a density sum that increases until it exceeds the threshold value. The last color added, which caused the sum to exceed the threshold, is then printed to the media sheet at a corresponding point.Type: GrantFiled: November 23, 1998Date of Patent: June 26, 2001Assignee: Xerox CorporationInventors: Meng Yao, Stephen M. Kroon
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Patent number: 6251554Abstract: A carrier comprised of a core and thereover a polymer generated from (1) a polymer containing amine groups, and (2) a second polymer containing sulfonic functional groups.Type: GrantFiled: March 29, 2000Date of Patent: June 26, 2001Assignee: Xerox CorporationInventors: Thomas R. Hoffend, Robert D. Bayley, Carol A. Fox, John G. VanDusen, Scott M. Silence, K. Derek Henderson
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Patent number: 6252994Abstract: Pixel blocks of an input image are type classified based on an analysis of pixel values for each respective pixel block. A discrete cosine transform (DCT) is performed on the pixel values of each pixel block, and a quantization modification process thresholds and/or quantizes the resulting DCT coefficients based on the type classification of the respective pixel block. Once the coefficients are modified in this way and encoded, the resulting data can be decoded and dequantized in compliance with the standard JPEG sequential mode data syntax in order to construct a perceptually faithful representation of the image, without passing any additional information to the decoder concerning the quantization modification.Type: GrantFiled: January 26, 1998Date of Patent: June 26, 2001Assignee: Xerox CorporationInventor: Asghar Nafarieh
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Patent number: 6251556Abstract: Provided is a toner used for developing an electrostatic image using as a binder resin, a low molecular weight polymer having less odor, which is obtained by emulsion-polymerizing a radical-polymerizable unsaturated monomer at a temperature of 115° C. or higher in the presence or absence of a chain transfer agent.Type: GrantFiled: December 10, 1999Date of Patent: June 26, 2001Assignee: Fuji Xerox Co LtdInventors: Eiichi Yoshida, Manabu Ogawa, Hiroshi Masuda, Hiroshi Serizawa
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Patent number: 6253053Abstract: A developer roll sleeve and method for making the same is disclosed. In a preferred embodiment, a core substrate roll is spray coated with a conductive composition including a host resin composition and a wear-resistance imparting additive. Preferably, the host resin composition includes a phenolic thermosetting resin and a conductivity additive such as carbon black, graphite and the like. Further, the wear resistance imparting additive is preferably selected from the group consisting of a polytetrafluoroethylene resin (e.g., Teflon), graphite, ultra-high molecular weight polyethylene having a molecular weight from about 3,000 to about 4,500 grams, molybdenum, molybdenum disulfide, silicone and mixtures thereof. The wear resistance imparting additive is preferably provided in an amount sufficient to obtain a thickness wear rate of less than about 0.00047 percent per printing cycle.Type: GrantFiled: January 11, 2000Date of Patent: June 26, 2001Assignee: Xerox CorporationInventors: Alan M. Litman, Michael F. Zona, Rafael Malespin