Patents Assigned to Xerox
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Patent number: 5529628Abstract: A developing roll includes a tubular sleeve driven for turn, and a magnet roll fixedly supported. An intensively magnetized block, shaped like U in cross section, is buried in the magnet roll at a location thereof where the magnet roll faces the latent electrostatic image bearing member. In this case, one side of the intensively magnetized block having a groove formed therein is directed toward the axis of the magnet roll, while the other side thereof is flush with the outer surface of the magnet roll. A material of the intensively magnetized block is more intensively magnetized, by its nature, than a material of the magnet roll. The intensively magnetized block is magnetized to form a single magnetic pole or a developing magnetic pole.Type: GrantFiled: September 20, 1995Date of Patent: June 25, 1996Assignees: Fuji Xerox Co., Ltd., Hitachi Metals, Ltd.Inventors: Takashi Fuchiwaki, Yoshikazu Okamoto, Ryuji Gotoh
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Patent number: 5530079Abstract: A polymerization process comprising: heating a mixture comprised of a free radical initiator, a stable free radical agent, at least one polymerizable monomer compound, and optionally a solvent, to form a polymer with a high monomer to polymer conversion and a narrow polydispersity, wherein said polymer is comprised of a covalently bound free radical initiator fragment at one end and a covalently bound stable free radical compound at the other end of the polymer, and wherein said stable free radical agent has high thermal, acidic, and photochemical stability.Type: GrantFiled: January 3, 1995Date of Patent: June 25, 1996Assignee: Xerox CorporationInventors: Richard P. N. Veregin, Peter M. Kazmaier, Michael K. Georges, Gordon K. Hamer
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Patent number: 5528808Abstract: An installation tool for stringing a tensioned wire between an anchor point and a retaining point, including a sleeve having a slidably mounted pin inside. A tip of the pin holds a loop end of the tensioned wire (such as a coronode in a corotron wire assembly), and protrudes from an end of the sleeve. When the tip holding the loop end of the tensioned wire is placed adjacent to a retaining pin, and the tip is retracted into the sleeve, the loop end of the wire slides onto the retaining pin, where it may rest in a securing notch. A spring may be used to bias the tip of the pin to retract or protrude from the end of the sleeve positioned adjacent to the retaining point. An end of the pin protruding from the sleeve end opposite the retaining point may be used independently or in cooperation with a biasing spring to move the tip of the pin into and out of the sleeve. The sleeve may include gripping areas and or finger loops to permit the user to accurately manipulate the tool.Type: GrantFiled: August 30, 1993Date of Patent: June 25, 1996Assignee: Xerox CorporationInventors: Paul J. Holubek, Betty J. Curtis, Frank R. Walsh
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Patent number: 5529617Abstract: A novel ink for ink jet recording, comprising water, a coloring material, a high molecular surface active agent and a sulfur-containing alcohol; and an ink for ink jet recording method using the ink which causes neither nozzle clogging nor disturbance of jetting and can provide a high density uniform image that can be easily dried on ordinary paper.Type: GrantFiled: January 6, 1995Date of Patent: June 25, 1996Assignee: Fuji Xerox Co., Ltd.Inventors: Yoshiro Yamashita, Toshitake Yui, Eisuke Hiraoka, Ken Hashimoto, Yasuharu Endo
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Patent number: 5530529Abstract: A apparatus for sensing fluid parameters such as optical density, light transmittance, electrical conductivity and/or other characteristics of a fluid, including an emitter adapted to project a light beam and an electrical current and a detector adapted to transmit a first signal in response to receiving the light beam and a second signal in response to receiving the electrical current. A processor determines a set of fluid parameters according to the signals transmitted from the detector. A measured amount of diluent may be added to the fluid to increase light transmittance and/or electrical conductivity so as to enhance sensor operation and sensitivity.Type: GrantFiled: December 21, 1994Date of Patent: June 25, 1996Assignee: Xerox CorporationInventors: Thomas A. Henderson, Gary A. Denton, Nancy B. Goodman
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Patent number: 5530776Abstract: A write head magnetizes magnetic-ink characters for a MICR system. A magnetic assembly defines a first pole in a first location and an opposite pole in a second location. A first pole piece and a second pole piece, spaced by a gap therebetween, are provided, the first pole piece disposed adjacent the first location and adapted to conduct a magnetic field from the first pole to the gap. A selectably positionable member is disposed between the second location and the second pole piece, the positionable member being adapted to affect a magnetic field from the second location through the second pole piece to the gap, thereby facilitating selectable alteration of a magnetic field profile across the gap.Type: GrantFiled: January 9, 1995Date of Patent: June 25, 1996Assignee: Xerox CorporationInventors: Raphael F. Bov, Jr, Jose R. Diaz
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Patent number: 5529868Abstract: An electrophotographic photoreceptor comprising a conductive substrate having provided thereon a photosensitive layer, wherein said photosensitive layer contains, as charge transporting material (i) at least one triarylamine compound represented by formula (I) ##STR1## wherein the definition of Ar.sub.1, Ar.sub.2 are described in the present specification; and (ii) at least one benzidine compound represented by formula (II) ##STR2## wherein the definition of R.sub.1, R.sub.1 ', R.sub.2, R.sub.2 ', R.sub.3, R.sub.3 ', m and n is described in the specification. The photoreceptor maintains its electrical characteristics stably on repeated use.Type: GrantFiled: March 13, 1995Date of Patent: June 25, 1996Assignee: Fuji Xerox Co., Ltd.Inventors: Kiyokazu Mashimo, Fumio Ojima, Tomozumi Uesaka, Toru Ishii, Kazuyuki Nakamura, Takahiro Suzuki
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Patent number: 5530536Abstract: A soft sleeveless long wearing pressure roll member having a cylindrical core, wherein the pressure roll has thereon, a nonswelling in silicone oil, layer of a thermally stable hydrofluoroelastomer having a Young's modulus of elasticity less than 500 lbs./in..sup.2, from about 250 mils. to about 500 mils. in thickness and a hardness of from about 45 to about 60 Shore A is provided.Type: GrantFiled: December 10, 1993Date of Patent: June 25, 1996Assignee: Xerox CorporationInventors: Arnold W. Henry, George J. Heeks, Clifford O. Eddy, Louis D. Fratangelo
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Patent number: 5530644Abstract: A data processing device, such as a handy translating device which translates specific phrases into corresponding phrases in another language system or, such as a retrieving device which retrieves specific phrases containing words. The data processing device includes a phrase storing unit for storing phrases each consisting of one or more words in a state that label data relating to the phrase is attached to the phrase, a retrieval word input unit for inputting a retrieval word, a label data retrieving unit for retrieving a phrase with the same label data as the retrieval word from among the phrases in the phrase storing unit, a display unit, and a display control unit for controlling an operation of the display unit for displaying the phrase retrieved by the label data retrieving unit.Type: GrantFiled: June 7, 1995Date of Patent: June 25, 1996Assignee: Fuji Xerox Co., Ltd.Inventors: Tomoe Maruta, Takayuki Okutsu, Hiroshi Hayashi, Hisayoshi Mori
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Patent number: 5530624Abstract: A printed PWBA guide member 30 in which a card guide 22 and a slide 14 with a slot 34 for receiving a PWBA 10 are all integrated for ease of installation and alignment of the card guide 22 with a card connector 18 residing on the PWBA 10.Type: GrantFiled: January 3, 1995Date of Patent: June 25, 1996Assignee: Xerox CorporationInventor: Richard E. Noon
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Patent number: 5529874Abstract: A liquid developer for electrophotography comprising a carrier liquid having dispersed therein toner particles containing a binder resin and a colorant, wherein said carrier liquid contains at least one ether compound selected from compounds represented by formula (I) and compounds represented by formula (II):R.sub.1 --O(C.sub.n H.sub.2n O).sub.x --R.sub.2 (I)R.sub.3 --O--R.sub.4 (II)wherein R.sub.1, R.sub.2, R.sub.3, and R.sub.4, which may be the same or different, each represent an alkyl group, an alicyclic alkyl group, an aryl group, or an aralkyl group; n represents an integer of from 4 to 8; and x represents 1 or 2. The developer requires no heating even in winter and is less vaporized and less dangerous owing to the low solidifying point and low vapor pressure of the carrier liquid. The developer stably exhibits satisfactory charging properties. The developer is suited to high-speed copying.Type: GrantFiled: June 6, 1995Date of Patent: June 25, 1996Assignee: Fuji Xerox Co., Ltd.Inventors: Takako Kobayashi, Hirotaka Matsuoka, Ken Hashimoto
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Patent number: 5530538Abstract: An electrostatic printer employing a cleaning blade that applies a pressure on a photoreceptor substrate. The printer charges the cleaning blade to attract residual toner, ensuring that at least a minimal amount of toner will remain in the vicinity of the blade-substrate interface to lubricate the blade-substrate interface.Type: GrantFiled: December 30, 1993Date of Patent: June 25, 1996Assignee: Xerox CorporationInventor: Ronald E. Godlove
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Patent number: 5529238Abstract: A bonding system with interferometric inspection for real time planarity feedback and control is used to bond two substrates at atmospheric pressure. The interferometric vision system includes a crt monitor display to display the relative planarity between two objects to be bonded. If the planarity is not sufficient, the operator, based on the information displayed, may make infitesimal adjustments to the bonding system to improve the planarity. After the desirable planarity is achieved, a heat system is activated to further facilitate bonding.Type: GrantFiled: September 20, 1994Date of Patent: June 25, 1996Assignee: Xerox CorporationInventors: Amatzia Feinberg, Chuong V. Tran
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Patent number: 5529719Abstract: A process for the preparation of polymer which comprises effecting a bulk polymerization of a mixture containing at least one monomer, a chain transfer agent, a crosslinking agent, a free radical redox polymerization initiator pair, and at least one additional free radical initiator until from about 4 to about 50 weight percent of the monomer has been polymerized and one or both components in the redox initiator pair has been consumed; dispersing with a high shear mixer the aforementioned partially polymerized mixture in water containing a stabilizing component selected from the group consisting of nonionic and ionic water soluble polymeric stabilizers to obtain a suspension of particles; polymerizing the resulting suspension; and optionally subsequently insulating, washing and drying the polymer product.Type: GrantFiled: March 27, 1995Date of Patent: June 25, 1996Assignee: Xerox CorporationInventors: Michael F. Cunningham, Thomas E. Enright, Hadi K. Mahabadi
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Patent number: 5529046Abstract: The present invention is an apparatus for controlling the ignition of an internal combustion engine. The present invention employs a high voltage transistor, preferably a high voltage MOSFET, to switch DC voltages on the order of 1 kV to regulate the flow of current to an input tap of a primary ignition transformer or coil. The high voltage transistor is controllable by conventional logic-level voltages produced by an ignition control module.Type: GrantFiled: January 6, 1995Date of Patent: June 25, 1996Assignee: Xerox CorporationInventors: John E. Werner, Alan J. Werner, Jr., Mohamad M. Mojaradi, Jerry F. Adams
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Patent number: 5530533Abstract: An apparatus for breaking aggregated toner in a liquid carrier into smaller pieces is provided. The apparatus includes a screen defining a plurality of apertures therein with the smaller pieces of toner being passable therethrough and a member. The member and the screen have a movable relation therebetween which is parallel to a surface of the screen to urge at least a portion of the toner through the screen.Type: GrantFiled: March 6, 1995Date of Patent: June 25, 1996Assignee: Xerox CorporationInventor: Anthony M. Wallace
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Patent number: 5529842Abstract: A charge roll for electrophotography wherein surface of the roll is formed from a resin layer containing BaSO.sub.4 particles coated with SnO.sub.2-x (wherein 0.ltoreq.X.ltoreq.1) is disclosed. The charge roll may comprise a roll shaft, an electroconductive elastic layer and the surface resin layer. The charge roll may further comprise an intermediate layer formed between the electroconductive elastic layer and the surface resin layer.Type: GrantFiled: September 29, 1994Date of Patent: June 25, 1996Assignee: Fuji Xerox Co., Ltd.Inventors: Taketoshi Hoshizaki, Masato Ono, Kazuhiro Koseki, Yukihiro Ishii, Kozo Oka
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Patent number: 5529871Abstract: A color toner providing a toner image excellent in brightness, clearness and graininess and a process for producing the same are disclosed, wherein a proportion of dispersed pigment particles having a circle-equivalent diameter of 0.3 .mu.m or greater does not exceed 0.1% of the total number of said dispersed pigment particles. The process comprises kneading a water-containing pigment paste and a binder resin at a temperature of 100.degree. C. or higher under pressure in a heat and pressure kneader to remove a water content to obtain a pigment dispersion, melt-kneading the resulting pigment dispersion together with a binder resin, and grinding the mixture.Type: GrantFiled: July 18, 1994Date of Patent: June 25, 1996Assignee: Fuji Xerox Co., Ltd.Inventors: Masanori Ichimura, Hiroshi Takayama, Michio Take, Hideyuki Akagi, Takashi Imai, Satoshi Inoue, Yasuo Yamamoto, Yutaka Sugizaki, Koji Fukushima, Masayuki Takei, Masaru Miura
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Patent number: 5530520Abstract: A copyright revenue allocation system that identifies copyrighted works after they are copied. Each copying service within the system informs a copyright revenue allocation service of each page or sheet it copies via document signals representing a portion of the copied document. The copyright revenue allocation service uses the document signals to determine whether the document copied is part of a copyrighted work, and, if so, identifies the owners of the intellectual property contained within that document. After identifying the intellectual property owners, the copyright revenue allocation system increments their associated revenue counters. These revenue counters are used to allocate copyright revenues from the copying services among the intellectual property owners entitled to compensation.Type: GrantFiled: December 15, 1994Date of Patent: June 25, 1996Assignee: Xerox CorporationInventor: Scott H. Clearwater
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Patent number: 5530278Abstract: In dicing of semiconductor chips from a wafer and mounting of the chips in an apparatus, techniques ensure the integrity of bonding pads and wire bonds in the dicing of individual chips and the connection of wire bonds to the chips. The wire bonds in the undiced chips are each connected to a probe pad disposed in an inter-chip area on the wafer, and this probe pad is used to accept probe pins which may otherwise damage the bonding pads on the chips themselves. In the dicing step, the probe pads are obliterated by the cutting blade. A polyimide dam disposes adjacent the bonding pads restricts the migration of liquid encapsulant securing the wire bonds to the bonding pads.Type: GrantFiled: April 24, 1995Date of Patent: June 25, 1996Assignee: Xerox CorporationInventors: Josef E. Jedicka, Brian T. Ormond