Patents Assigned to Xerox
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Patent number: 6196675Abstract: An apparatus and related method for improved image fusing in an ink jet printing system are provided. An ink image is transferred to a final receiving substrate by passing the substrate through a transfer nip. The substrate and ink image are then passed through a fusing nip that fuses the ink image into the final receiving substrate. Utilizing separate image transfer and image fusing operations allows improved image fusing and faster print speeds. The secondary fusing operation enables the image transfer process to use reduced pressures, whereby the load on the drum and transfer roller is reduced. Additionally, the secondary fusing operation may be utilized to apply a supplemental coating to the transferred image.Type: GrantFiled: April 17, 1998Date of Patent: March 6, 2001Assignee: Xerox CorporationInventors: Michael F. Deily, Ronald F. Burr, Donald R. Titterington
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Patent number: 6198088Abstract: A platen cover assembly of an image processor includes a light source array that has a plurality of light sources arranged in a two-dimensional light source array, and a translucent white material covering at least a side of the light source array that faces a platen of the image processor. When a document is placed on a platen and covered by the platen cover assembly, a first scan of the platen is performed with a document illuminator of the digital image processor deactivated to sense light from exposed light sources of the light source array. The document illuminator is then activated, and a second scan is performed to obtain image data from the document. The obtained image data is then processed based on the size, location and/or orientation of the document, as determined from positions of the light sources detected during the first scan.Type: GrantFiled: May 27, 1999Date of Patent: March 6, 2001Assignee: Xerox CorporationInventor: Ned J. Seachman
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Patent number: 6196278Abstract: A method for filling a powder container, including the steps of placing a first powder container to be filled in filling relationship to a supply of powder in a vessel, vibrofluidizing the powder in the vessel to improve its flow properties, dispensing powder from the vessel into the first container, removing the first container from the vessel, and placing a second container to be filled in filling relationship to the vessel.Type: GrantFiled: March 19, 1999Date of Patent: March 6, 2001Assignee: Xerox CorporationInventors: Paul M. Wegman, Joseph S. Zelazny, Mikhail Vaynshteyn, Fumii Higuchi, Joseph C. Barbisan, Oleg Y. Abramov, Sergei D. Ryabov, Yuri A. Yudin, Alexander G. Kashkarov, Alexander N. Gerasimov, Victor A. Kouzmitchev
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Patent number: 6198885Abstract: A method to provide a highly intelligent, automated diagnostic system that identifies the need to replace specific parts to minimize machine downtime rather than require extensive service troubleshooting. In particular, a systematic, logical test analysis scheme to assess machine operation from a simple sensor system and to be able to pinpoint parts and components needing replacement is provided by a series of first level of tests by the control to monitor components for receiving a first level of data and by a series of second level of tests by the control to monitor components for receiving a second level of data. Each of the first level tests and first level data is capable of identifying a first level of part failure independent of any other test. Each of the second level tests and second level data is a combination of first level tests and first level data or a combination of a first level test and first level data and a third level test and third level data.Type: GrantFiled: March 5, 1998Date of Patent: March 6, 2001Assignee: Xerox CorporationInventors: Roger W. Budnik, James M. Pacer, Guru B. Raj, Ralph A. Shoemaker, Michael G. Swales
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Patent number: 6197462Abstract: A flexible electrostatographic imaging member including at least one photographic imaging layer, a support layer, and an anticurl back layer having an exposed surface including a cross linked polyamide at the exposed surface, the polyamide being, formed from a solution selected from the group including a first solution including crosslinkable alcohol soluble polyamide containing methoxy methyl groups attached to amide nitrogen atoms, an acid having a pKa less than about 3, a cross linking agent selected from the group including a formaldehyde generating cross linking agent, an alkoxylated cross linking agent, a methylolamine cross linking agent and mixtures thereof, and a liquid selected from the group including alcohol solvents, diluent and mixtures thereof, a second solution including crosslinkable alcohol soluble polyamide free of methoxy methyl groups attached to amide nitrogen atoms, an acid having a pKa less than about 3, a cross linking agent selected from the group including a an alkoxylaType: GrantFiled: November 29, 1999Date of Patent: March 6, 2001Assignee: Xerox CorporationInventors: John F. Yanus, Timothy J. Fuller, Damodar M. Pai, William W. Limburg, John A. Bergfjord, Sr., Dale S. Renfer
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Patent number: 6197228Abstract: A method of making rotating element sheet material utilizing magnetic latching is disclosed. First a plurality of rotating elements, each element having a magnetized segment, are mixed with an elastomer and a plurality of magnetic particles to attract the magnetic particles to the magnetized segments. Then a magnetic field is applied to orient the elements in a common direction. When the rotating elements have all been oriented in a common direction, they are held in that orientation for a long enough period of time to allow the magnetic particles to migrate in the elastomer to the regions of the elastomer in the vicinity of the magnetized segments of the elements. The elastomer is then cured to form an elastomer substrate with trapped rotating elements and magnetic particles. The elastomer substrate is then immersed into a bath of dielectric plasticizer which is absorbed more readily by elastomer than by the rotating elements.Type: GrantFiled: November 25, 1998Date of Patent: March 6, 2001Assignee: Xerox CorporationInventor: Nicholas K. Sheridon
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Patent number: 6195113Abstract: A method for digitally controlling power from dual laser diodes in a system that forms a plurality of scan lines in a transverse direction across the width of a photosensitive member by reflecting modulated beams from a plurality of facets of a rotating polygon by detecting the beginning of a scan line and providing a start of scan (SOS) signal representing the detection. Power is digitally controlled from the laser diodes by controlling the power from each of the laser diodes for video ON exposure control and controlling the power from each of the laser diodes for video OFF bias control in order for the bias control to enable constant exposure power during SOS detection.Type: GrantFiled: January 31, 1997Date of Patent: February 27, 2001Assignee: Xerox CorporationInventor: Martin E. Hoover
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Patent number: 6194117Abstract: A process including: blending carrier particles in a fluidized bed jet mill and continuously separating fine particles formed therein from the resulting blended carrier particles.Type: GrantFiled: August 26, 1999Date of Patent: February 27, 2001Assignee: Xerox CorporationInventors: Lewis S. Smith, Juan M. Tirado, William H. Hollenbaugh, Jr., Scott M. Silence, K. Derek Henderson, Susan J. LaFica, Amy L. Stamp
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Patent number: 6195093Abstract: A presentation control system and method facilitates the interaction between a user and a presentation device. The user generates tangible sensible identification devices, which are linked to items to be displayed in a presentation. In use, the user places the tangible sensible identification-carrying device, in the sensible area of an identification sensing device. The identification sensing device reads a presentation element identification from the identification-carrying device and determines a presentation element identified by the presentation element identification. The presentation element is then displayed via a presentation display device.Type: GrantFiled: September 14, 1998Date of Patent: February 27, 2001Assignees: Fuji Xerox Co., Ltd., Xerox CorporationInventors: Lester D. Nelson, Lia Adams, Satoshi Ichimura, Elin Ronby Pedersen, Stephen W. Smoliar
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Patent number: 6195525Abstract: The electromagnetic induction heating device has a simple construction, holds an object to be heated in a favorable heating condition while effectively suppressing the irregularities of heat generation of the object to be heated, and reduces an energy consumption. The electromagnetic induction heating device which heats the object to be heated provided with at least an electromagnetic induction heat generating layer includes a magnetic core made of magnetic material which is disposed in such a manner that it faces the electromagnetic induction heat generating layer of the object to be heated in an opposed manner, and an exciting coil which is wound around the magnetic core and generates a fluctuation magnetic field which penetrates the electromagnetic induction heat generating layer.Type: GrantFiled: December 7, 1999Date of Patent: February 27, 2001Assignee: Fuji Xerox Co., Ltd.Inventor: Ryuichiro Maeyama
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Patent number: 6193792Abstract: Disclosed is an ink composition which comprises (a) water, (b) a surfactant of the formula wherein the molecular weight of the polypropylene oxide block is about 900 and the ethylene oxide blocks constitute about 80 percent by weight of the molecule, (c) colored pigment particles, and (d) uncolored precipitated colloidal silica particles, wherein the ink has a pH of at least about 7.5 when measured at about 25° C.Type: GrantFiled: April 28, 1999Date of Patent: February 27, 2001Assignee: Xerox CorporationInventor: Gary R. Fague
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Patent number: 6195472Abstract: An image processing apparatus and method rotates an image at any angle during frequency transform of image coding or image decoding. A basis calculator calculates transform bases according to a rotation angle parameter received from a parameter input unit, and outputs the calculated transform bases to a transform unit. A coordinate calculator calculates input block coordinates according to a rotation parameter, and outputs the calculated input block coordinates to an image input unit. The image input unit extracts an input image block from an input image in accordance with the input block coordinates, and outputs the extracted input image block to a transform unit. The transform unit transforms the input image block by using the transform bases, and outputs transform coefficients to an entropy encoder. The entropy encoder performs entropy coding of the transform coefficients, and outputs code data to an image output unit. Inverse processes are performed for decoding.Type: GrantFiled: June 12, 1998Date of Patent: February 27, 2001Assignee: Fuji Xerox Co., Ltd.Inventors: Ikken So, Taro Yokose
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Patent number: 6194110Abstract: A photoconductive imaging member containing a photogenerating layer comprised of a mixture of perylenes, wherein the mixture comprises, for example, (1) 1,3-bis(n-pentylimidoperyleneimido) propane (Formula A), 1,3-bis(2-methylbutylimido peryleneimido)propane (Formula B) and 1-(n-pentylimidoperyleneimido)-3-(2-methylbutylimidoperyleneimido)-propane (Formula C), and (2) an electron acceptor component Formula A 1,3-bis(n-pentylimidoperyleneimido)propane Formula B 1,3-bis(2-methylbutylimidoperyleneimido)propane Formula C 1-(n-pentylimidoperyleneimido)-3-(2-methylbutylimidoperyleneimido)propaneType: GrantFiled: July 13, 2000Date of Patent: February 27, 2001Assignee: Xerox CorporationInventors: Cheng-Kuo Hsiao, Ah-Mee Hor, Giuseppa Baranyi, H. Bruce Goodbrand
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Patent number: 6194112Abstract: A process including: heating resin coated core particles for a time until the weight average molecular weight of the resin coating declines.Type: GrantFiled: October 4, 1999Date of Patent: February 27, 2001Assignee: Xerox CorporationInventors: Suresh K. Ahuja, Richard B. Mcgriff, Timothy J. Waldnig, Deepak R. Maniar, Robert A. Gill, Kevin Marcell
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Patent number: 6195456Abstract: Color printing systems frequently use multiresolution analysis, which creates intermediate lower resolution images, in applications such as descreening and filtering. The typical steps are to decompose the original image into sub bands, apply the application to one or more sub bands and then recompose the image, prior to color correction and color space transformation. This disclosure describes applying the color correction to one of the lower resolution sub bands and a simpler color space transformation to the final image as a way to reduce the amount of computation. The described multiresolution analysis is a wavelet transform.Type: GrantFiled: December 19, 1996Date of Patent: February 27, 2001Assignee: Xerox CorporationInventors: Thyagarajan Balasubramanian, Ricardo L. de Queiroz
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Patent number: 6195457Abstract: A method detects if an image is compressed. The method determines a block grid within the image and establishes blocks from the determined grid. The method then computes differences between samples inside the established blocks and differences between samples across the established blocks. The method determines that the image is compressed based on characteristics derived from statistics of the computed differences.Type: GrantFiled: November 13, 1998Date of Patent: February 27, 2001Assignee: Xerox CorporationInventor: Ricardo L. de Queiroz
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Patent number: 6195443Abstract: A manufacturing system including: (a) a vessel for holding a liquid; (b) a first member and a second member, each having a flat surface, wherein the flat surface of the first member faces and is spaced from the flat surface of the second member, thereby defining a gap region between the two flat surfaces, wherein a section of the first member is transparent through the thickness of the first member; (c) a liquid delivery system connected to the vessel and the gap region which delivers the liquid to the gap region and the liquid flows in the gap region in view of the transparent section of the first member; (d) a camera positioned to view through the transparent section of the first member; (e) image processing means coupled to the camera for determining the homogeneity of the liquid in the gap region; and (f) liquid dispensing equipment connected to the liquid delivery system.Type: GrantFiled: May 15, 1998Date of Patent: February 27, 2001Assignee: Xerox CorporationInventors: John M. Hammond, Jian Cai, Kent J. Evans, John G. Matta, Robert F. Dunham, Mario Errico, Julie A. Cady, Mark C. Petropoulos, Stanley J. Pietrzykowski, Jr., Mark S. Thomas
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Patent number: 6194108Abstract: A method of forming an image comprising the steps of: preparing a device in which an image holding element which can functions as one of electrodes pair and which has a surface for holding an image and an opposite electrode which is the other of the electrodes pair are immersed in a dispersion of a coloring material fine particles in which ionized coloring material fine particles are dispersed in an aqueous liquid, and applying electric current to a desired area of the image holding element and the opposite electrode through the dispersion and depositing-building-up the coloring material fine particles to the desired area electrochemically to form an image, is disclosed.Type: GrantFiled: October 6, 1997Date of Patent: February 27, 2001Assignee: Fuji Xerox Co., Ltd.Inventors: Eiichi Akutsu, Shigemi Ohtsu, Satoshi Tatsuura, Lyong Sun Pu
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Patent number: D438240Type: GrantFiled: November 30, 1999Date of Patent: February 27, 2001Assignee: Fuji Xerox Co., Ltd.Inventor: Hidetoshi Kimura
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Patent number: RE37085Abstract: Bichromal balls have two hemispheres, typically one black and one white, each having different electrical properties. Each ball is enclosed within a spherical shell and then a space between the ball and shell is filled with a liquid to form a microsphere so that the ball is free to rotate in response to an electrical field. The microspheres can then be mixed into a substrate which can be formed into sheets or can be applied to any kind of surface. The result is a film which can form an image from an applied electrical field.Type: GrantFiled: February 17, 1999Date of Patent: March 6, 2001Assignee: Xerox CorporationInventor: Nicholas K. Sheridon