Patents Assigned to Xerox
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Patent number: 5776621Abstract: An oriented ferroelectric thin film element has a structure in which an epitaxial or oriented buffer thin film is formed on a semiconductor single crystal substrate, an epitaxial or oriented metallic thin film is formed on the buffer thin film, and an epitaxial or oriented ferroelectric thin film is further formed on the metallic thin film. The semiconductor single crystal substrate may be made of Si or GaAs, the buffer thin film may be made of MgO or MgAl.sub.2 O.sub.4, the metallic thin film may be made of Pd, Pt, Al, Au, or Ag, and the ferroelectric thin film has an ABO.sub.3 perovskite crystal structure.Type: GrantFiled: October 25, 1995Date of Patent: July 7, 1998Assignee: Fuji Xerox Co., Ltd.Inventor: Keiichi Nashimoto
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Patent number: 5777882Abstract: A control system for a sheet handling system having a mailboxing system with a mailbox bin subsystem is provided. The mailbox bin subsystem includes a print receiving bin set with a plurality of print receiving bins, the plurality of print receiving bins being corresponded with a set of bin users. The control system includes a user interface with which one or more print receiving bins of the plurality of print receiving bins are assigned to one of the bin set users, and a controller communicating with the mailbox bin subsystem. In practice the controller: (1) determines, for the one bin set user, a frequency of use value varying as a function of a degree to which the one bin set user uses the one or more print receiving bins to which the one bin set user is assigned, and (2) reassigns one of the one or more print receiving bins to which the one bin set user is assigned when the frequency of use value drops below a preselected threshold and a selected condition is met.Type: GrantFiled: September 26, 1996Date of Patent: July 7, 1998Assignee: Xerox CorporationInventor: David L. Salgado
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Patent number: 5777656Abstract: An apparatus and method for maintaining tone reproduction for printing of a final halftoned image in a printer, including scanner for generating a continuous tone image. A halftoner is provided for generating pixel data based on the continuous tone image, each pixel data having pixel position parameters and desired pixel darkness parameters. A developer unit is provided for marking representative halftone targets on an imageable surface with toner. A sensor is provided for sensing an amount of toner on each of the representative halftone targets. A tone control system is provided for generating a representative tone reproduction curve based on the amount of toner sensed on the representative halftone targets.Type: GrantFiled: June 7, 1995Date of Patent: July 7, 1998Assignee: Xerox CorporationInventor: Thomas A. Henderson
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Patent number: 5777669Abstract: An image reader device comprises photo sensing element arrays each of a plural number of blocks each consisting of a plural bits of photo sensing elements, a plural number of first switching elements, connected to the photo sensing elements, for transferring en bloc the charge of all bits generated in the photo sensing element array, a plural number of second switching elements, connected to the photo sensing elements, for resetting en bloc the charge of all bits left in the photo sensing elements after the charge transfer, a plural number of capacitor portions, connected to the first switching elements, for retaining the transferred charge, a plural number of third switching elements, connected to the first switching elements, for transferring the charge stored in the capacitor portions, a plural number of wiring capacitor portions, formed connecting to the third switching elements, for retaining the charge transferred by the third switching elements, common signal lines for connecting the third switching elType: GrantFiled: February 26, 1996Date of Patent: July 7, 1998Assignee: Fuji Xerox Co., Ltd.Inventors: Koki Uwatoko, Hiroyuki Miyake
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Patent number: 5774254Abstract: A display system attached to a fixed substrate includes a two-dimensional light modulator array having a plurality of light modulators arranged in a first row and a second row, with the first row at a first row position with respect to the fixed substrate and the second row at a second row position with respect to the fixed substrate. A mechanically movable element such as a rotary stepper or piezovibrator attaches the two-dimensional light modulator array to the fixed substrate. The movable element is operated to move the first row from its first row position to substantially occupy the second row position. In conjunction with various image processing deblurring and rescaling techniques, this effectively distributes light between adjacent rows to compensate for failure of one or more light modulators in a row.Type: GrantFiled: June 26, 1997Date of Patent: June 30, 1998Assignee: Xerox CorporationInventor: Andrew A. Berlin
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Patent number: 5772743Abstract: Disclosed is an ink composition which comprises (a) water, (b) a colorant, (c) a fluorinated material selected from: (1) those of the formula ?(F.sub.2n+1 C.sub.n CH.sub.2 S).sub.2 (CH.sub.3)C--CH.sub.2 CH.sub.2 COO.sup.- !?B.sup.+ !, wherein n is an integer of from about 8 to about 20 and B is a cation, (2) those of the formula ?(F.sub.3 C(F.sub.2 C).sub.n CH.dbd.CHCH.sub.2 OCH(OH)CH.sub.2).sub.2 NCH.sub.2 COO.sup.- !?X.sup.+ !, wherein X is a cation and n is an integer of from about 3 to about 20, and (3) mixtures thereof, and (d) a monomeric compound having at least two carboxylic acid functional groups. Also disclosed is a process for preparing said ink composition which comprises (i) admixing the ink ingredients, and (ii) subjecting the mixture thus formed to ultrasonification, thereby reducing the average particle diameter of liposomes of the fluorinated material in the ink.Type: GrantFiled: October 30, 1997Date of Patent: June 30, 1998Assignee: Xerox CorporationInventors: Kurt B. Gundlach, Luis A. Sanchez, Cheryl A. Hanzlik, Kathy-Jo Brodsky, Richard L. Colt, Aileen M. Montes, Edward J. Radigan, Jr.
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Patent number: 5774152Abstract: A jetting element has a plurality of nozzles, a heating body for jetting ink droplets from the nozzles, and an ink chamber communicating with the nozzles. A manifold is bonded with the jetting element through an adhesive, and has an ink flow path formed therein to supply an ink to the jetting element. After the ink has been charged, the interior of the ink flow path is held at a negative pressure. An adhesive whose gas permeability is smaller than 2.0.times.10.sup.-6 cm.sup.3 .multidot.cm/cm.sup.2 .multidot.sec.multidot.atm and whose angle of contact with respect to the ink is 45.degree. or less is used as the adhesive. The bonded portion created by the adhesive has a smooth shape so that air bubbles are hard to adhere to the bonded portion.Type: GrantFiled: April 12, 1996Date of Patent: June 30, 1998Assignee: Fuji Xerox Co., Ltd.Inventors: Yumiko Namba, Koji Ikegami
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Patent number: 5772767Abstract: This invention discloses an apparatus for holding and transporting a hollow flexible belt throughout a coating process. The apparatus includes a spring and shaft assembly which is placed into the hollow portion of a seamless flexible belt. The spring portion of the assembly until it is transformed into a belt carrying chucking device. The chucking device is then attached to a mechanical handling device, and the the belt is transported through the dipping and coating process. This allows the belt to be transformed into an organic photoreceptor. The chucking device and flexible belt are then removed from the mechanical handling device, and the chuck is removed from the inside of the photoreceptor.Type: GrantFiled: December 17, 1996Date of Patent: June 30, 1998Assignee: Xerox CorporationInventors: John S. Chambers, Ronald E. Godlove, Huoy-Jen Yuh, Timothy J. Leenhouts, Rachael A. Forgit, Robert T. Cosgrove
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Patent number: 5774591Abstract: A system tracks human head and facial features over time by analyzing a sequence of images. The system provides descriptions of motion of both head and facial features between two image frames. These descriptions of motion are further analyzed by the system to recognize facial movement and expression. The system analyzes motion between two images using parameterized models of image motion. Initially, a first image in a sequence of images is segmented into a face region and a plurality of facial feature regions. A planar model is used to recover motion parameters that estimate motion between the segmented face region in the first image and a second image in the sequence of images. The second image is warped or shifted back towards the first image using the estimated motion parameters of the planar model, in order to model the facial features relative to the first image.Type: GrantFiled: December 15, 1995Date of Patent: June 30, 1998Assignee: Xerox CorporationInventors: Michael J. Black, Yaser Yacoob
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Patent number: 5774251Abstract: An optical scanning apparatus includes: a rotational polygonal mirror, on the side of which a plurality of reflecting surfaces are provided, the reflecting surfaces deflecting a beam of incident light in the primary scanning direction at a substantially equal angular velocity; a first optical system for forming a beam of light sent from the light source into an image long in the primary scanning direction in such a manner that the formed image strides over the plurality of deflecting surfaces; and an f.theta. lens for converging the beam of light deflected on the deflecting surface at a position close to the surface of the photoreceptor drum so that a spot of light irradiated on the photoreceptor drum can be moved at a substantially equal speed. In the optical scanning apparatus, the angles .alpha. and .beta. satisfy the following expression:(cos((.beta.+.alpha.).div.2)).div.(cos((.beta.-.alpha.).div.2)).gtoreq.0.75where .alpha.Type: GrantFiled: October 24, 1996Date of Patent: June 30, 1998Assignee: Fuji Xerox Co., Ltd.Inventor: Yoshihito Sekikawa
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Patent number: 5774145Abstract: Ink reservoirs are provided in a channel substrate correspondingly to various colors of ink. Two or more dummy nozzles which are not used for performing printing/recording are provided between printing/recording nozzles for jetting ink of different colors. A space wide enough to disposed therein at least two nozzles is provided between the dummy nozzles. Consequently, adjacent and different-color ink is not mixed, and nozzles having unstable operation and disposed near the side walls of the ink reservoirs are not used for performing printing/recording, so that images of high quality can be obtained.Type: GrantFiled: April 22, 1996Date of Patent: June 30, 1998Assignee: Fuji Xerox Co., Ltd.Inventors: Naoki Morita, Naoshi Kotake, Yutaka Mori
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Patent number: 5774356Abstract: Image data is input through an image data input means, and stored into an image data storage means on a job basis. The volumes of the respective stored jobs are recognized by a job volume recognition means. A processing priority determination means determines an output processing priority order of the stored jobs based on the recognized job volumes. An interrupt can be generated for a priority job even during output processing of another job according to the output processing priority order.Type: GrantFiled: May 24, 1995Date of Patent: June 30, 1998Assignee: Fuji Xerox Co., Ltd.Inventors: Masayuki Hisatake, Yoshihiko Nemoto
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Patent number: 5772744Abstract: Disclosed is an ink composition which comprises water, a colorant, betaine, a tertiary amine, and a material of the formula ?(F.sub.2n+1 C.sub.n CH.sub.2 S).sub.2 (CH.sub.3)C--CH.sub.2 CH.sub.2 COO.sup.- !?B.sup.+ !, wherein n is an integer of from about 8 to about 20 and B is a cation. In one specific embodiment, n is 10 and B is (HO--CH.sub.2 CH.sub.2).sub.2 NH.sub.3.sup.+. In another specific embodiment, the tertiary amine is 1-methylimidazole. In yet another specific embodiment of the present invention, the colorant is an anionic dye with carboxylate groups, sulfonate groups, or both carboxylate and sulfonate groups. Also disclosed is a process for preparing the aforementioned ink composition wherein a liquid containing the material of the formula ?(F.sub.2n+1 CnCH.sub.2 S).sub.2 (CH.sub.3)C--CH.sub.2 CH.sub.2 COO.sup.- !?B.sup.+ ! is subjected to centrifugation. Also disclosed are ink jet printing processes employing the aforementioned ink.Type: GrantFiled: October 30, 1997Date of Patent: June 30, 1998Assignee: Xerox CorporationInventors: Kurt B. Gundlach, Richard L. Colt, Edward J. Radigan, Jr.
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Patent number: 5773345Abstract: The present invention provides an optical link amplifier which reduces the attenuation of the optical signal passing through optical an link amplifier so as to have a fail-safe function to ensure the communication path of an optical signal even if abnormality occurs at an optical amplifier, and an wavelength multiplex laser oscillator in which the spectrum width of the laser beam is narrow and coupling coefficient with an optical fiber is increased.Type: GrantFiled: April 7, 1995Date of Patent: June 30, 1998Assignee: Fuji Xerox Co., Ltd.Inventor: Takeshi Ota
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Patent number: 5774767Abstract: The present invention provides a method of supporting and driving an electro-photographic photoreceptor in which total deflection can be improved and vibration sound due to the total deflection can be prevented, and an imaging apparatus realizing the method.A sliding bearing 3 fixed to a supporting member 2 consisting of a box member is fitted into an inner circumferential surface of an end portion of a cylindrical substrate 1 in the axial direction thereof. An annular driving member 4 is fitted into the other end portion of the cylindrical substrate 1 in the axial direction thereof. A threaded hole is provided at the central portion of the driving member 4. When a screw 5 is inserted into the threaded hole, the driving member 4 is deformed in an outer diametrical direction thereof and fixed to the inner circumferential surface of the cylindrical substrate 1. The driving member 4 is caused to be rotated by a driving source (not shown) which is connected to the driving member 4 via a gear 8.Type: GrantFiled: December 27, 1996Date of Patent: June 30, 1998Assignee: Fuji Xerox Co., Ltd.Inventors: Junichi Shibata, Susumu Honma
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Patent number: 5773827Abstract: An infrared reflectance densitometer (IRD) sensor which utilizes four blocks each of which generates an element of a given equation and a fifth block which generates an output voltage based on the given equation. The IRD sensor eliminates a problem known as hunting.Type: GrantFiled: December 16, 1996Date of Patent: June 30, 1998Assignee: Xerox CorporationInventors: Mostafa R. Yazdy, Mehrdad Zomorrodi, Harry J. McIntyre, Alan J. Werner, Jr.
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Patent number: 5773510Abstract: A process for the preparation of branched thermoplastic resins comprising: heating a mixture of an unsaturated resin, a free radical initiator, and a stable free radical agent; adding to the heated mixture at least on polymerizable monomer; and cooling the mixture, wherein the resulting product is a branched thermoplastic resin with arms or branches comprised of polymerized monomer with substantially uniform length and narrow polydispersity.Type: GrantFiled: March 30, 1995Date of Patent: June 30, 1998Assignee: Xerox CorporationInventors: Peter M. Kazmaier, Karen A. Moffat, Marko D. Saban, Richard P. N. Veregin, Michael K. Georges, Gordon K. Hamer, Toyofumi Inoue, Stephan V. Drappel
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Patent number: 5774761Abstract: A method of setting up an electrostatographic printing machine having image quality attributes and parameters that control the attributes using multivariate modeling and multiobjective optimization. The method includes providing a discrete number of parameter settings and printing test patterns based upon the parameter settings. The test patterns are scanned to produce a set of image quality values. Using a multivariate adaptive regression splines technique, a model of the printing machine image quality is provided in response to the parameter settings and the image quality values. Optimum parameter settings for the printing machine are then determined from the discrete number of parameter settings to produce consistent image quality.Type: GrantFiled: October 14, 1997Date of Patent: June 30, 1998Assignee: Xerox CorporationInventor: Sudhendu Rai
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Patent number: 5773553Abstract: Disclosed is a process which comprises reacting a polyimide precursor with borane. Also disclosed is a thermal ink jet printhead containing a layer comprising the product of this reaction.Type: GrantFiled: June 13, 1996Date of Patent: June 30, 1998Assignee: Xerox CorporationInventors: Timothy J. Fuller, Ram S. Narang
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Patent number: D395669Type: GrantFiled: June 27, 1996Date of Patent: June 30, 1998Assignee: Xerox CorporationInventors: Michael Carlotta, Robert K. McCubbin, Sr., Richard C. Keefe, Donald M. Stevens