Patents Assigned to Xerox Corporation
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Patent number: 8297616Abstract: An assembly includes two nip assemblies spaced apart along a first axis. Each nip assembly includes a driven wheel and an idler roller. The driven wheel rotatably supported about the first axis. The idler cooperates with the driven wheel to engage a sheet. The idler rotatably supported about a second axis. The second axis being selectively moveable relative to the first axis. The selective movement between a first and second orientation occurs while the sheet is moved along the transport path. In the first orientation the second axis extends parallel to the first axis. In the second orientation the second axis extends at an oblique angle to the first axis. The selective movement pivots about a third axis extending through a centerline common to both the driven wheel and the idler. The selective movement of one of the two nip assemblies being independent from the selective movement of the other.Type: GrantFiled: September 25, 2011Date of Patent: October 30, 2012Assignee: Xerox CorporationInventor: Marina L. Tharayil
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Patent number: 8297728Abstract: A method enables adjustment of a print speed for a phase change ink imaging device with reference to an ink level sensor in a print head reservoir indicating an open loop or a closed loop state. The adjustment may also be made with reference to a measured image density, which may be a rolling solid area coverage average.Type: GrantFiled: September 1, 2010Date of Patent: October 30, 2012Assignee: Xerox CorporationInventors: Austin Lloyd Richards, William Bruce Weaver, Michael Kenneth Oehl
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Patent number: 8298672Abstract: An intermediate transfer member, such as a belt, that includes, for example, a supporting substrate, a silane first intermediate layer, and contained on the silane layer a second layer of a self crosslinking acrylic resin; a mixture of a glycoluril resin and an acrylic polyol resin; or a mixture of a glycoluril resin and a self crosslinking acrylic resin.Type: GrantFiled: October 29, 2009Date of Patent: October 30, 2012Assignee: Xerox CorporationInventors: Jin Wu, Jonathan H Herko, Brian P Gilmartin, David J Gervasi, Dante M Pietrantoni, Michael S Roetker, Scott J Griffin, David W Martin
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Patent number: 8301579Abstract: A method of maximizing a concave log-likelihood function comprises: selecting a pair of parameters from a plurality of adjustable parameters of a concave log-likelihood function; maximizing a value of the concave log-likelihood function respective to an adjustment value to generate an optimal adjustment value, wherein the value of one member of the selected pair of parameters is increased by the adjustment value and the value of the other member of the selected pair of parameters is decreased by the adjustment value; updating values of the plurality of adjustable parameters by increasing the value of the one member of the selected pair of parameters by the optimized adjustment value and decreasing the value of the other member of the selected pair of parameters by the optimized adjustment value; and repeating the selecting, maximizing, and updating for different pairs of parameters to identify optimized values of the plurality of adjustable parameters.Type: GrantFiled: October 6, 2008Date of Patent: October 30, 2012Assignee: Xerox CorporationInventors: Florent Perronnin, Guillaume Bouchard
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Patent number: 8300286Abstract: A photosensitive chip, including first and second sets of photosensors aligned in a Y direction and separated in a perpendicular X direction and third and fourth sets of photosensors aligned in the Y direction and separated in the X direction. The first and third sets are aligned in the X direction. The second and fourth sets are aligned in the X direction. The first and third sets are offset in the Y direction from the second and fourth sets by a distance about equal to a length of a photosensor divided by the number of sets. A time interval between activation of two sequential photosensors from the first through fourth sets of photosensors is substantially equal to the time period of a scan line for the first through fourth sets of photosensors divided by the number of photosensors in the first through fourth sets of photosensors.Type: GrantFiled: July 1, 2009Date of Patent: October 30, 2012Assignee: Xerox CorporationInventor: Scott L. TeWinkle
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Patent number: 8302002Abstract: A document is organized as a plurality of nodes associated with a table of contents. The nodes are clustered into a plurality of clusters based on a similarity criterion. One of the clusters is identified as corresponding to a highest or lowest level of the table of contents based on a selection criterion. The highest or lowest level is assigned to the nodes belonging to the identified cluster. The identifying and assigning are repeated to assign levels to the nodes belonging to each next highest or lowest level of the table of contents. The repeated identifying is based on the selection criteria applied disregarding nodes that have already been assigned a level. The document is structured based at least in part on the levels assigned to the table of contents nodes.Type: GrantFiled: April 27, 2005Date of Patent: October 30, 2012Assignee: Xerox CorporationInventors: Herve Dejean, Jean-Luc Meunier
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Patent number: 8298314Abstract: Processes for producing silver nanoparticles are disclosed. A reaction mixture comprising a silver compound, a carboxylic acid, an amine compound, and an optional solvent is optionally heated. A hydrazine compound is then added and the mixture is further reacted to produce the silver nanoparticles.Type: GrantFiled: August 18, 2008Date of Patent: October 30, 2012Assignee: Xerox CorporationInventor: Yuning Li
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Patent number: 8300259Abstract: A driver module can be configured to generate a driver interface. The driver module can be configured to include, in the interface, various menus, selectors, and buttons to allow the user to specify the parameters and settings of the job. The driver module can be configured to include, in the interface, an option for the user to remove a job, sent to the reproduction device, after the job is processed by the reproduction device.Type: GrantFiled: December 13, 2007Date of Patent: October 30, 2012Assignee: Xerox CorporationInventor: Keith G. Bunker
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Patent number: 8300266Abstract: A method evaluates image quality in an ink printing system and generates data values for altering the operation of the ink printing system. The method includes generating an ink image on an ink image receiving member that corresponds to a digital image stored in the ink printing system, generating a scanned image signal corresponding to the ink image, generating firing signal waveform adjustments and image data adjustments with reference to the scanned image signal corresponding to the ink image, and operating a printhead in an ink imaging system with reference to the firing signal waveform adjustments and the image data adjustments.Type: GrantFiled: March 12, 2009Date of Patent: October 30, 2012Assignee: Xerox CorporationInventors: Andrew S. Yeh, Bhaskar T. Ramakrishnan, Kelly D. Sims, Katie Maria Teslow, Luo Cheng, George Laurens Taylor, John Alan Durbin, Ernest I. Esplin, Howard A. Mizes, Joel Chan, Ngoc-Diep Thi Nguyen, Susan J. Zoltner, Yeqing Zhang, Lisa Schmidt, Kenneth R. Chamberlain, Matthew Hudson Dixon, Steven Van Cleve Korol, James B. Campbell, Russell J. Watt
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Publication number: 20120269611Abstract: A method for job separation in a high volume document scanning is provided. The method includes monitoring a document receiver with a monitor device to determine when a batch of documents has been received by the document receiver and in response to the monitor device determining the batch of documents has been received by the document receiver, automatically inserting a job separation document with a separation document inserter at an end of the batch to separate the batch of documents from a successive batch of documents.Type: ApplicationFiled: April 19, 2011Publication date: October 25, 2012Applicant: XEROX CORPORATIONInventors: Xing Li, John Allott Moore
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Publication number: 20120269526Abstract: The subject embodiments disclose an electrostatic transfer control method that avoids undesired retransfer effects. A printing device develops and transfers several control patches. The patches are transferred at different electrostatic set points and a control strategy is utilized involving one or more density sensors to measure the transferred toner patches whereby the obtained density information can be used to compute the optimal value of electrostatic transfer bias. Print operators can adjust the bias value based on preferences for predetermined standards.Type: ApplicationFiled: April 19, 2011Publication date: October 25, 2012Applicant: Xerox CorporationInventors: Joanne Lai Zen Lee, John T. Buzzelli
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Publication number: 20120269425Abstract: A system and method for determining the aesthetic quality of an image are disclosed. The method includes extracting a set of local features from the image, such as gradient and/or color features and generating an image representation which describes the distribution of the local features. A classifier system is used for determining an aesthetic quality of the image based on the computed image representation.Type: ApplicationFiled: April 19, 2011Publication date: October 25, 2012Applicant: Xerox CorporationInventors: Luca Marchesotti, Florent Perronnin, Gabriela Csurka
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Publication number: 20120268772Abstract: A thin client system and methods are disclosed for previewing a finished printed document or package in which a client computer system prompts a user to select from a predefined list of view positions and allows user selection or entry of view angles, a view position distance, and displayed page number and requests a single still image view of the produced document or package for review by the user.Type: ApplicationFiled: April 22, 2011Publication date: October 25, 2012Applicant: XEROX CORPORATIONInventors: Robert John Rolleston, Neil Robert Sembower
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Publication number: 20120270146Abstract: The present disclosure relates to a process for preparing a polyester-based magnetic toner composition. The toner composition includes one or more polyester amorphous binder resins, optionally a crystalline polyester resin, and spherical barium iron oxide particles. In embodiments, the toner is prepared from barium iron oxide particles that are in a dispersion including water and a dispersant. In yet other embodiments, the process may be conducted under an inert gas such as argon to avoid oxidation of the ferromagnetic particles during toner preparation.Type: ApplicationFiled: April 20, 2011Publication date: October 25, 2012Applicant: XEROX CORPORATIONInventors: Ke Zhou, Suxia Yang, Cuong Vong, Paul J. Gerroir, Karen Ann Moffat, Gabriel Iftime
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Publication number: 20120268774Abstract: An apparatus for printing a latent image includes a light source, a photodetector, a rotary contact, a power supply, driving electronics and a plurality of thin-film transistors. The light sources receives the digital data signals and transmits encoded optical data signals. The photodetector receives the encoded optical data signals and transmits signals including selection signals and digital pixel voltages. A rotary contact receives operating voltage potentials from a controller and the power supply receives the operating voltage potentials from the rotary contact. The power supply generates a low voltage potential, a groun potential and a high voltage potential. Driving electronics receive a low voltage potential, a ground potential, selection signals and digital pixel voltages and generate bias signals and pixel voltages. The plurality of TFTs receive the high voltage potential, the bias signals and the pixel voltages and drive the hole injection pixels to generate an electrostatic latent image.Type: ApplicationFiled: April 25, 2011Publication date: October 25, 2012Applicant: XEROX CORPORATIONInventors: George Cunha Cardoso, Mandakini Kanungo, Jeffrey Folkins
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Publication number: 20120269436Abstract: A system and a method are provided for labeling images and for generating an annotation system. The labeling method includes providing a graphical structure, such as a tree structure, which graphically represents predictive correlations between labels in a set of labels. The predictive correlations can, for example, estimate the likelihood, in a training set, that knowing one label has a given value, another label will have a given value. An image to be labeled is received. Feature-based predictions for values of labels in the set of labels are computed for the image. A value for at least one label for the image from the set of labels is computed based on the feature-based label predictions and inference on the structured prediction model.Type: ApplicationFiled: April 20, 2011Publication date: October 25, 2012Applicant: Xerox CorporationInventors: Thomas Mensink, Jakob Verbeek, Gabriela Csurka
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Publication number: 20120269441Abstract: A computer-implemented system and method for predicting an image quality of an image are disclosed. For an input image, the method includes generating a first descriptor based on semantic content information for the image and generating a second descriptor based on aesthetic features extracted from the image. With a categorizer which has been trained to assign a quality value to an image based on first and second descriptors, a quality value is assigned to the image based on the first and second descriptors and output.Type: ApplicationFiled: April 19, 2011Publication date: October 25, 2012Applicant: Xerox CorporationInventors: Luca Marchesotti, Rodrigue Nkoutche
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Publication number: 20120269433Abstract: Described herein is a level I (overt) feature for security printing intended to deter unauthorized modification of text documents. The exemplary method includes generating a textured background that follows the contour of the text it surrounds and is difficult to modify. The background patterns may be generated with a two-step procedure that first creates a smooth function and then modulates it to produce patterns with sharp contrast. Tampering will be deterred as visible artifacts will be created when text is altered. Compared to the levels II and III features, the exemplary method relies on human vision for detection and does not require any special tools and instruments. It can be used in applications where fast, simple and inexpensive inspection is essential, or combined with other technologies for enhancing overall effectiveness.Type: ApplicationFiled: April 25, 2011Publication date: October 25, 2012Applicant: XEROX CORPORATIONInventors: Zhigang Fan, Shen-Ge Wang
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Publication number: 20120269398Abstract: A license plate localization method and system based on a combination of a top-down texture analysis and a bottom-up connected component. An image with respect to a vehicle captured by an image capturing unit can be processed in order to locate and binarize a busy area. A black run with respect to the binarized image can be analyzed and classified and one or more objects (connected components) can be generated based on the black run classification. The objects can be further classified in accordance with their size utilizing a run-length based filter to filter out a non-text object. The leftover objects can then be spatially clustered and the uniformity and linearity of the clustered objects can be examined based on a linearity test. The clustered objects can be rejected if they fail the linearity test and the detected objects can further be matched with a plate edge characteristic in order to locate a license plate.Type: ApplicationFiled: April 21, 2011Publication date: October 25, 2012Applicant: Xerox CorporationInventors: Zhigang Fan, Vladimir Kozitsky, Aaron M. Burry
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Publication number: 20120269549Abstract: A belt tensioning device for minimizing tension variations in a moveable endless belt configured to be mounted for rotation about rollers mounted to a frame of an image printing device. The belt tensioning device includes a tension roll forced into contact with the image retaining side of the endless belt by a tension exerting mechanism. With the tension roll engaging the image side of the endless belt, a pair of mounted rollers combine with the tension roll to form an open loop for sharply turning the endless web from a first direction to a direction generally perpendicular to the first direction and back again to the first direction thereby tensioning the moveable endless belt and minimizing unused imaging space on the belt.Type: ApplicationFiled: April 21, 2011Publication date: October 25, 2012Applicant: XEROX CORPORATIONInventor: Moritz P. Wagner