Patents Assigned to Xerox
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Patent number: 6007173Abstract: An ink status system for determining the status of a consumable supply of ink contained in an ink container. The ink status system includes a first conductor, disposed on a first wall of the ink container, being aligned with the first wall such that the consumable supply of ink contacts a decreasing portion of the first conductor during consumption thereof and an ink sensing circuit, coupled to the first conductor, generating a continuously variable ink level signal as a function of the decreasing portion of the first conductor being contacted by the consumable supply of ink during consumption thereof. The ink status system is used in a liquid ink printer to determine the amount of ink remaining in an ink tank or ink cartridge. A liquid ink printhead of the printer includes the necessary circuitry to generate a signal indicating the status of the ink which can include ink levels as well as ink types or colors.Type: GrantFiled: September 26, 1996Date of Patent: December 28, 1999Assignee: Xerox CorporationInventors: Lisa A. DeLouise, Sophie V. Vandebroek, Joel A. Kubby
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Patent number: 6005482Abstract: An enhanced information collage having a surface for detachable support of a plurality of collage components. The enhanced information collage comprises an identification unit, a location unit, and an information processing system. The identification unit is for determining informational content of at least some of the plurality of collage components. The location unit is for tracking position of at least some of the plurality of collage components. The information processing system is connected to the identification unit and the location unit for storing sate records of position and informational content of at least some of the plurality of collage components, with the information processing being updatable to reflect changes in position and information content of the at least some of the plurality of collage components.Type: GrantFiled: September 17, 1998Date of Patent: December 21, 1999Assignee: Xerox CorporationInventors: Thomas P. Moran, Eric Saund, Beverly L. Harrison, Roy Want, William J. van Melle
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Patent number: 6006048Abstract: An electrophotographic reproduction machine including an image bearing member, latent image devices for forming on the image bearing member electrostatic latent images having a first relative polarity, and a hybrid development unit for applying to the latent images correct-sign toner particles having a second polarity relatively opposite to the first polarity. A detecting apparatus adjacent the image bearing member for sensing toner particles developed into non-image regions. The development unit includes a first biasing means including a DC power supply for biasing a magnetic roll mounted within the housing of the hybrid development unit. A second biasing means includes a second DC power for biasing a donor roll mounted which forms a toner transfer nip with the magnetic roll. The DC power supplies is adjusted so that "wrong sign" toner of said first polarity are attracted to the donor roll from the magnetic brush within the housing of the hybrid development unit.Type: GrantFiled: October 2, 1998Date of Patent: December 21, 1999Assignee: Xerox CorporationInventor: Jeffrey J. Folkins
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Patent number: 6003864Abstract: A self adjusting jam prevention guide and jam clearance baffle for a printing machine. A moveable guide is attached to a machine subsystem module and is moveable from a first position to a second position. In the first position the guide bridges a gap between the machine subsystem module and a preceding subsystem module. In the second position, the guide is retracted from the gap to allow easy removal of one of the subsystem modules. The moveable guide is preferably self actuated by the use of a biasing device and a ramped section so that the movement of one of the adjacent subsystem modules causes extension and retraction of the guide. A jam clearance aid is further attached to the exit of the machine subsystem module. The clearance aid uses a J-shaped channel to cause a sheet fed into a jammed sheet to buckle and cause both the first jammed sheet and subsequent sheets to be partially ejected from the paper path for easy removal therefrom.Type: GrantFiled: April 11, 1997Date of Patent: December 21, 1999Assignee: Xerox CorporationInventors: Youti Kuo, Roger C. Male, Anthony G. Poletto, Alfred Zielinski
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Patent number: 6004709Abstract: An allyloxymethylatedpolyamide composition is disclosed, the allyloxymethylatedpolyamide being represented by Formulae I and II: ##STR1## wherein: n is a positive integer sufficient to achieve a weight average molecular weight between about 5000 and about 100,000,R is an alkylene unit containing from 1 to 10 carbon atoms,between 1 and 99 percent of the R.sub.2 sites are --H, andbetween 1 and 99 percent of the R.sub.2 sites are --H, and the remainder of the R.sub.2 sites is between 25 percent and 99 percent --CH.sub.2 --O--(CH.sub.2).sub.w --CH.dbd.CH.sub.2, whereinw is 1, 2 or 3,between 1 and 75 percent of the R.sub.2 sites are --CH.sub.2 --O--R.sub.5, andR.sub.5 is an alkyl unit containing 1 to 4 carbon atoms, and ##STR2## wherein: m is a positive integer sufficient to achieve a weight average molecular weight between about 5000 and about 100,000,R.sub.1 and R are independently selected from the group consisting of alkylene units containing from 1 to 10 carbon atoms,between 1 and 99 percent of the R.sub.Type: GrantFiled: December 22, 1998Date of Patent: December 21, 1999Assignee: Xerox CorporationInventors: Dale S. Renfer, William W. Limburg, Timothy J. Fuller, John F. Yanus, Damodar M. Pai, Robert W. Nolley, Paul J. DeFeo, Anthony T. Ward
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Patent number: 6004712Abstract: A carrier comprised of a core and thereover a polymer of (1) methylmethacrylate and a monoalkyl aminoalkyl methacrylate, or (2) a polymer of methylmethacrylate and dialkylaminoalkyl methacrylate.Type: GrantFiled: August 26, 1998Date of Patent: December 21, 1999Assignee: Xerox CorporationInventors: Angelo J. Barbetta, Robert D. Bayley, Carol A. Fox, Thomas R. Hoffend, John G. VanDusen, Scott M. Silence, K. Derek Henderson
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Patent number: 6006057Abstract: A piezographic imaging process includes the use of a composite photoreceptor structure that includes a piezoactive layer that enables Xerographic imaging without corona charge/transfer subsystems. Flexure of the photoreceptor structure creates electric fields sufficient for the creation of developable latent electrostatic image patterns. Flexure of the photoreceptor structure following development generates an electric field for transfer of toner images onto paper.Type: GrantFiled: December 22, 1998Date of Patent: December 21, 1999Assignee: Xerox CorporationInventor: Christopher Snelling
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Patent number: 6006059Abstract: A method and apparatus for improving the quality of an image that has been developed by a liquid carrier is disclosed. Generally speaking, the invention is a blotter roll which includes an absorbing layer wrapped around a non-permeable rigid core. A vacuum system communicates with the exterior surface of the blotter roll to remove the excess fluid from the blotter roll and transport it out of the printing system.Type: GrantFiled: September 8, 1997Date of Patent: December 21, 1999Assignee: Xerox CorporationInventors: Henry R. Till, David H. Pan, Shu Chang, Rasin Moser, Terry D. Seim, Paul W. Morehouse, Jr.
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Patent number: 6006240Abstract: The present invention handles fully-lined, semi-lined and line-less cell tables by identifying the cells and cell separators during page recomposition processes as part of optical character recognition processes. The invention accomplishes such by iteratively identifying cell separators and cells. The processes accomplishes this by iteratively merging word boxes into cells, iteratively finding separators, and iteratively merging cells bounded by the same separators, and repeating these steps until the correct cell structure is found. With this method, rows are estimated, close words are merged into cells, columns are then estimated, cells within columns are merged, columns re-estimated, cells in the same row and column are merged into bigger cells, and then rows and cells are merged according to the detection of various table styles. This invention handles large complex tables with multiple lines of symbols per cell. This method handles multiple line cells in lined, semi-lined and line-less tables.Type: GrantFiled: March 31, 1997Date of Patent: December 21, 1999Assignee: Xerox CorporationInventor: John C. Handley
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Patent number: 6004669Abstract: The present invention provides an electrostatic charging member excellent in dispersibility of electrically-conducting agent and uniformity in resistance which causes no contamination of the material to be charged for a prolonged period of time. The present invention relates to an electrostatic charging member which electrostatically charging uniformly the surface of a material to be charged such as photoreceptor and dielectric material while pressing the material. An electrostatic charging member 1 has a two-layer structure comprising an electrically-conductive elastic material layer 1b formed on an electrically-conductive substrate 1a, and a resistance-controlling layer 1c covering the elastic material layer 1b. The resistance-controlling layer 1c comprises an electrically-conducting agent such as carbon black having a pH value of not more than 6 dispersed in an amine-modified polyurethane resin as a base polymer.Type: GrantFiled: December 22, 1997Date of Patent: December 21, 1999Assignee: Fuji Xerox Co., Ltd.Inventors: Minoru Rokutan, Michiaki Yasuno, Naoki Ohnishi
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Patent number: 6005586Abstract: A drawing processing apparatus has a drawing data input section 2 for receiving the drawing data to be drawn. A drawing data determination section 3 determines the drawing data type from the drawing data input to the drawing data input section 2 and passes the drawing data having an outline shape to a vector generation section 4 and a drawing attribute processing section 5 and the drawing data having no outline shape to the drawing attribute processing section 5 according to the drawing data type. The vector generation section 4 prepares a vector representing an outline shape from the drawing data received from the drawing data determination section 3. The drawing attribute processing section 5 gets different drawing attributes for each drawing data type from the drawing data passed from the drawing data determination section 3 and performs processing as required.Type: GrantFiled: December 12, 1997Date of Patent: December 21, 1999Assignee: Fuji Xerox Co., Ltd.Inventors: Masao Morita, Kazuto Hayashi
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Patent number: 6004714Abstract: A toner comprised of binder, colorant, and a silica containing a coating of an alkylsilane.Type: GrantFiled: August 11, 1998Date of Patent: December 21, 1999Assignee: Xerox CorporationInventors: Roger N. Ciccarelli, Denise R. Bayley, Thomas R. Pickering, Jacques C. Bertrand
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Patent number: 6006281Abstract: A printing subsystem for use in a network printing system, having a database communicating with a client browser, is provided. The database includes a plurality of data sets and the client browser includes a program with a set of instructions for displaying at least one of the plurality of data sets on a user interface display screen. The printing subsystem is disposed remotely of and communicates with both of the database and the client browser. The printing subsystem includes a marking engine and a copy of the program, the program copy receiving the at least one of the plurality of data sets for placing the same in a displayable format. An interface communicates with the program copy for converting the at least one of the plurality of data sets from the displayable format to a printable format, and a print buffer is employed to store the at least one of the plurality of data sets in the printable format in anticipation of producing a print therefrom.Type: GrantFiled: January 8, 1998Date of Patent: December 21, 1999Assignee: Xerox CorporationInventor: Cyril G. Edmunds
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Patent number: 6006054Abstract: A method of achieving pure tone noise control in a charging system of a copier/printer. The method includes the steps of first providing a plurality of individual charging devices and providing a plurality of power supplies for charging the plurality of individual charging devices. Next, charging at least one of the plurality of individual charging devices with a first of the plurality of power supplies at a predetermined frequency and charging at least one of the plurality of individual charging devices with a second of the plurality of power supplies at a frequency different from, but within a band width of, the predetermined frequency; and, lastly, charging at least one of the plurality of individual charging devices with a third of the plurality of power supplies at a frequency different from that of the first and second power supplies and within the band width of the first power supply frequency.Type: GrantFiled: December 17, 1998Date of Patent: December 21, 1999Assignee: Xerox CorporationInventors: Chee-Chiu J. Wong, Peter G. Fournia
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Patent number: 6003862Abstract: An improved simple and low cost tamping system for a printed sheets compiling system directly driven by partial rotation of a reversible stepper drive motor driving a single molded plastic tamper drive unit. That tamper drive unit integrally includes a rigid radially extending portion rotatably driven by the drive motor, an elongate flexible member portion driven from one end by the rigid rotatable portion, and a tamper at the opposite end of the elongate flexible member. The elongate flexible member is slidably mounted in a fixed guides system to smoothly transition from an initial arcuate configuration to a final linear configuration to convert reversing partial rotational movement of the stepper drive motor into the desired substantially linear reciprocal sheet edge tamping movement of the tamper.Type: GrantFiled: August 11, 1997Date of Patent: December 21, 1999Assignee: Xerox CorporationInventors: Robert D. Russell, William J. Lavin
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Patent number: 6005022Abstract: Disclosed is an ink composition which comprises (1) water; (2) a dye; and (3) a cationic amido amine copolymer. Also disclosed are methods for using the aforementioned ink composition in ink jet printing processes.Type: GrantFiled: March 24, 1998Date of Patent: December 21, 1999Assignee: Xerox CorporationInventor: William M. Schwarz, Jr.
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Patent number: 6004447Abstract: This invention relates to an electroforming device and a process used to electroform a metal layer on an inner surface of a female mandrel. The electrolytic solution flows only through an electrolytic solution passageway that defines the inner surface as the walls of the passageway. The mandrel may include more than one electrolytic solution passageway, or multiple mandrels may be used in a sequential order to mass produce the electroforms.Type: GrantFiled: May 22, 1995Date of Patent: December 21, 1999Assignee: Xerox CorporationInventors: Patricia Bischoping, Robert P. Altavela, Lawrence Kotowicz, Peter J. Schmitt, William G. Herbert, Ronald E. Jansen, John H. Lennon, Henry G. Grey
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Patent number: 6005682Abstract: The system achieves high-resolution imaging with low-resolution two-dimensional imagers whose sensors are only a fraction of a selected pixel area. Sensors are stepped across an image with an optical or mechanical stepper to acquire an image at each sensor position. Thereby, resolution is defined by a step size which is comparable to the sensor size, rather than by pixel resolution. The system thus uses multiple image, obtained from individual sensors, which have a sensed area substantially less than the area of the pixels of the sensor array. Such rescanning is accomplished by movable mirrors or lenses that are disposed between an illuminated specimen and a sensor area.Type: GrantFiled: June 7, 1995Date of Patent: December 21, 1999Assignee: Xerox CorporationInventors: Xiaodong Wu, G. A. Neville Connell, Robert A. Street, Vittorio Castelli, Harold M. Anderson, Richard Weisfield
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Patent number: 6004717Abstract: A process comprising:blending core particles with a first coating resin or resin mixture to produce a first blend;heating the resulting first blend to produce first coated particles;blending the resulting first coated particles with a second coating resin or resin mixture to form a second blend; andheating the second blend to afford second or twice coated particles.Type: GrantFiled: June 13, 1997Date of Patent: December 21, 1999Assignee: Xerox CorporationInventors: John A. Creatura, K. Derek Henderson, Bernard A. Kelly
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Patent number: 6006049Abstract: Operation of a developer so as to achieve reduced scavenging and reduced direct contamination when using a hybrid developer. A hybrid developer is operated in three modes. The first mode is normal operation in which the developer operates as in the prior art. The second mode is an unloaded standby mode wherein toner is not on the developer's donor roll and wherein the developer's bias potentials are selected to reduce scavenging. The third mode is a loaded standby mode wherein toner is on the developer's donor roll and wherein the developer's bias potentials are selected to reduce direct contamination.Type: GrantFiled: November 2, 1998Date of Patent: December 21, 1999Assignee: Xerox CorporationInventor: Jeffrey J. Folkins