Patents Assigned to Xerox
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Patent number: 6681671Abstract: An apparatus and method for cutting belt material to accurate dimensions and for forming the mating edges of a puzzle cut joint for joining the ends of the belt material to form a continuous belt for use in a document processing application. The workpiece is maintained in accurate registration a punch press by optical sensors at each station. A vacuum pickup is constructed to move the belt material from a precision cutter to a punch press and maintains the material in tensioned condition to facilitate accurate operation of the punch press.Type: GrantFiled: March 7, 2002Date of Patent: January 27, 2004Assignee: Xerox CorporationInventors: Karl V. Thomsen, Charles J. Urso, III, James F. Dildine, Jr., Boris W. Haritonoff, David C. Gruber, Steven C. Brown
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Patent number: 6683702Abstract: A method of reproducing a document including halftoned regions therein scans the document to generate scanned image data comprising a digitized representation of said document. The scanned image data that corresponds to the halftoned regions is then rendered using a compact rendering process that includes positioning an observation window about a target pixel and a neighboring pixel; selecting a fill-order based upon a result of the analyzing step; and generating a high addressability pixel as a function of the selected fill-order.Type: GrantFiled: July 7, 1999Date of Patent: January 27, 2004Assignee: Xerox CorporationInventors: Robert P. Loce, Michael Branciforte, Yeqing Zhang, Leon C. Williams
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Patent number: 6682175Abstract: In an ink jet recording head, an ink pool has a main flow path communicating with an ink supply port and a plurality of branch flow paths branching from the main flow path. Each ejector has a pressure chamber, a pressure generating unit and a nozzle. The pressure chamber communicates with the corresponding one of the branch flow paths. The pressure generating unit generates a pressure wave in ink charged into the pressure chamber. The nozzle ejects the ink from the pressure chamber compressed by the pressure wave. At least one wall surface forming each of the branch flow paths is formed of a damper member elastically deformable in accordance with the change of pressure in the branch flow path.Type: GrantFiled: August 29, 2002Date of Patent: January 27, 2004Assignee: Fuji Xerox Co., Ltd.Inventors: Yasuhiro Otsuka, Kazuhiko Hayashi, Toshinori Ishiyama, Masakazu Okuda
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Patent number: 6683646Abstract: A CMOS-based photosensor array, having a plurality of photodiodes therein, includes a spillover protection circuit associated with each photodiode. The spillover protection circuit causes a potential to be applied to a photodiode in response to a charge spillover or “blooming” condition. The spillover protection device is momentarily disabled whenever a bias charge is injected onto the photodiode by the transfer circuit. Also, a reference voltage applied to the gate of a transistor forming the spillover protection device is higher than a threshold voltage of the transistor but is lower than a sum of the threshold voltage and a maximum light-intensity signal from the photodiode.Type: GrantFiled: November 24, 1997Date of Patent: January 27, 2004Assignee: Xerox CorporationInventors: Paul A. Hosier, Scott L. Tewinkle, Jagdish C. Tandon
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Patent number: 6684048Abstract: A system and method of applying a controlled amount of fluid to a moveable image carrying member of an electrographic printing system using a liquid toner before an image is transferred to a substrate. The amount of fluid applied may be controlled by a re-wet roller, located between the toner station and the transfer station, whose distance from the moveable image carrying member is varied along with the rotational speed and direction of the re-wet roller, according to either the roughness and porosity of the substrate or the print quality of the substrate. Alternatively, the fluid may be directly applied just to image areas of the moveable image carrying member to improve print quality.Type: GrantFiled: January 16, 2002Date of Patent: January 27, 2004Assignee: Xerox CorporationInventors: Edward B. Caruthers, Paul W. Morehouse, Jr., Henry R. Till
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Publication number: 20040015733Abstract: When causing a power saving mode to return by inputting a return signal, power is supplied to a device to which suppliance of power has been cut off. In this case, a power-saving control CPLD is masked to cancel an uncertain signal generated in the device under an intermediate potential at which the voltage of a power-saving-time power cutoff device, which supplies power to the device, is gradually rising. Thus, an erroneous operation caused by the uncertain signal can be prevented. Further, when the voltage of the power-saving-time power cutoff device reaches an operation-guaranteeing voltage, the power-saving control CPLD reads the uncertain signal again. Thereby, intrinsic characteristics of the uncertain signal can be verified, and a secure return operation can be implemented.Type: ApplicationFiled: March 13, 2003Publication date: January 22, 2004Applicant: Fuji Xerox Co., Ltd.Inventors: Takenori Obara, Megumi Fukui, Yukihiro Fukuda
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Publication number: 20040013317Abstract: An image finder method and apparatus are provided for identifying a source image data file in a database based upon a printed image actually generated from a source image data file in the database. Input image data that represent a printed input image are received from a scanner. Source image data are received from the database that is defined by a plurality of different source image data files stored on a CD-ROM or other storage medium. Correlation operations are carried out to identify any source image data files that are highly correlated with the input image data. The results of the correlation operations are used to identify the source image data file from which the input printed image was actually generated or, if this is not possible, to identify more than one source image data file that could be the source image data file from which the printed input image was actually generated.Type: ApplicationFiled: July 22, 2002Publication date: January 22, 2004Applicant: XEROX CORPORATIONInventors: Reiner Eschbach, Zhigang Fan
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Publication number: 20040011233Abstract: Conventional design tools were not developed for designing square zero-shift supercells. Conventionally, solutions that enable square zero-shift supercells were found by trial and error or by exhaustive analysis. According to a first design criterion of this invention, a non-square supercell in a first frame of reference has a diagonal that is equal in length to the diagonal of a square supercell in a second frame of reference rotated at a desired screen angle to the first frame of reference. The screen angle is a function of the lengths of the sides of the non-square supercell in the first frame of reference. According to a second design criterion, if the area of the corresponding square supercell in the second frame of reference is an integer, a square zero-shift supercell can be designed based on the lengths of the sides of the non-square supercell in the first frame of reference.Type: ApplicationFiled: July 16, 2002Publication date: January 22, 2004Applicant: XEROX CORPORATIONInventor: Charles M. Hains
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Publication number: 20040014853Abstract: An organometallic coating composition having an organometallic compound, a fully fluorinated co-solubilizer, and a fluorinated solvent, and the organometallic compound is miscible in the coating composition, and the co-solubilizer is present in the coating composition.Type: ApplicationFiled: July 18, 2002Publication date: January 22, 2004Applicant: Xerox CorporationInventors: David J. Gervasi, Santokh S. Badesha, George J. Bingham
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Publication number: 20040014402Abstract: An imageable belt includes a seam that is finished using an abrasive finishing machine. The seam comprises a seam width with adhesive material disposed thereon. The finishing process includes an abrasive-finishing media with a finishing surface and a backer bar. The backer bar comprises a backer bar radius. The backer bar surface is positioned against the belt inner surface so that the belt outer surface contacts the finishing surface to define a finishing contact arc with respect to the backer bar radius. A tension, feed rate and pressure are applied to the finishing media. Using the finishing machine, the seam is then finished to remove the adhesive material. The finishing process results in a seam that is imageable. In one embodiment, the backer bar radius is adjusted so that the finishing contact arc covers the seam width.Type: ApplicationFiled: May 1, 2003Publication date: January 22, 2004Applicant: Xerox CorporationInventors: Paul F. Mastro, Daniel L. Coughlin, Thomas L. DiGravio
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Publication number: 20040012817Abstract: In an image rendering system, a method of compensating for system performance changes related to image attributes includes rendering a diagnostic image, sensing at least one image quality from the diagnostic image, updating an image attribute compensation tone reproduction curve based on the sensed image quality and rendering an image based on the updated image attribute compensation tone reproduction curve. For example, image attributes include print media type and a halftone screen selection. An image processing system operative to perform the method of compensation includes a set of image attribute compensation tone reproduction curves. Each curve of the set is associated with a particular combination of image attributes. For example, each curve is associated with a particular media type/halftone screen combination.Type: ApplicationFiled: July 16, 2002Publication date: January 22, 2004Applicant: XEROX CORPORATIONInventors: Grace T. Brewington, Peter A. Crean, Lalit K. Mestha, Gary W. Skinner
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Publication number: 20040013959Abstract: A compound having the Formula I 1Type: ApplicationFiled: July 17, 2002Publication date: January 22, 2004Applicant: Xerox CorporationInventors: Timothy P. Bender, John F. Graham, James M. Duff
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Publication number: 20040013268Abstract: What has been disclosed is a method for authentication of JPEG image data prior to transmission to an intended recipient which enables the recipient to ascertain whether the received image file originated from a known identified source or whether the contents of the file have been altered in some fashion prior to receipt. In accordance to the present invention, to encode verification information a unique hashing function is derived from a first section of image data contained in the JPEG compressed image in such a way that any changes subsequently made to said first section of image data would be reflected in a different hashing function being derived therefrom. An integrity checking number is produced from the first section's derived hashing function. The integrity checking number is subsequently encrypted into a signature string. The signature string is then embedded into a next section of the image data. The process is repeated until all sections of image data have been processed.Type: ApplicationFiled: July 22, 2002Publication date: January 22, 2004Applicant: Xerox CorporationInventor: Ricardo L. de Queiroz
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Publication number: 20040015695Abstract: What has been disclosed is a system and method for authentication of JPEG image data prior to transmission to an intended recipient which enables the recipient to ascertain whether the received image file originated from a known identified source or whether the contents of the file have been altered in some fashion prior to receipt. In accordance to the present invention, to encode verification information a unique hashing function is derived from a first section of image data contained in the JPEG compressed image in such a way that any changes subsequently made to said first section of image data would be reflected in a different hashing function being derived therefrom. An integrity checking number is produced from the first section's derived hashing function. The integrity checking number is subsequently encrypted into a signature string. The signature string is then embedded into a next section of the image data. The process is repeated until all sections of image data have been processed.Type: ApplicationFiled: July 22, 2002Publication date: January 22, 2004Applicant: Xerox CorporationInventor: Ricardo L. de Queiroz
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Publication number: 20040015697Abstract: What has been disclosed is a system and method for authentication of JPEG image data prior to transmission to an intended recipient which enables the recipient to ascertain whether the received image file originated from a known identified source or whether the contents of the file have been altered in some fashion prior to receipt. In accordance to the present invention, to encode verification information a unique hashing function is derived from a first section of image data contained in the JPEG compressed image in such a way that any changes subsequently made to said first section of image data would be reflected in a different hashing function being derived therefrom. An integrity checking number is produced from the first section's derived hashing function. The integrity checking number is subsequently encrypted into a signature string. The signature string is then embedded into a next section of the image data. The process is repeated until all sections of image data have been processed.Type: ApplicationFiled: July 22, 2002Publication date: January 22, 2004Applicant: Xerox CorporationInventor: Ricardo L. de Queiroz
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Publication number: 20040014862Abstract: A process for solubilizing an organometallic compound in a fluorinated solvent to form an organometallic solution by adding and reacting a co-solubilizer having a fully fluorinated polymer, an organometallic compound, and a fluorinated solvent, and the co-solubilizer has the ability to cause the organometallic compound to become miscible in a fluorinated solvent, and further, the co-solubilizer is not a catalyst and is present in the final organometallic solution.Type: ApplicationFiled: July 18, 2002Publication date: January 22, 2004Applicant: Xerox CorporationInventors: David J. Gervasi, Santokh S. Badesha, George J. Bingham
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Publication number: 20040015696Abstract: What has been disclosed is a system and method for authentication of JPEG image data prior to transmission to an intended recipient which enables the recipient to ascertain whether the received image file originated from a known identified source or whether the contents of the file have been altered in some fashion prior to receipt. In accordance to the present invention, to encode verification information a unique hashing function is derived from a first section of image data contained in the JPEG compressed image in such a way that any changes subsequently made to said first section of image data would be reflected in a different hashing function being derived therefrom. An integrity checking number is produced from the first section's derived hashing function. The integrity checking number is subsequently encrypted into a signature string. The signature string is then embedded into a next section of the image data. The process is repeated until all sections of image data have been processed.Type: ApplicationFiled: July 22, 2002Publication date: January 22, 2004Applicant: Xerox CorporationInventor: Ricardo L. de Queiroz
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Publication number: 20040015784Abstract: A method for repairing a wrapper associated with an information source, includes defining a classifier, based on content features of extracted and labeled information using the wrapper, using the classifier to extract content information from the file according to a set of classifier extraction rules; analyzing the extracted content information according to the content features and assigning a label to any extracted content information which satisfies the label's rules; and defining a repaired wrapper as the classifier and those labels in the set which have been assigned to extracted content information. Additional content information and labels can be extracted by iteratively creating a classifier based on both content features and structure features of extracted strings.Type: ApplicationFiled: October 21, 2002Publication date: January 22, 2004Applicant: Xerox CorporationInventor: Boris Chidlovskii
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Publication number: 20040012662Abstract: An apparatus (22, 122) for filtering a substance (13) includes an electrically insulating substrate (30, 130) that separates a source volume (12) containing the substance (13) from a target volume (18). The substrate (30, 130) has a first side in fluid communication with the source volume (12) and a second side in fluid communication with the target volume (18). The substrate (30, 130) further includes a plurality of openings (42, 142) connecting the first side with the second side. The openings (42, 142) are sized to provide filtering fluid communication between the source volume (12) and the target volume (18) for at least one phase of the substance. A heater film (32) is deposited over selected portions of the substrate (30, 130). The heater film (32) contacts the substrate (30, 130) to heat at least a portion of the openings (42, 142).Type: ApplicationFiled: July 22, 2002Publication date: January 22, 2004Applicant: XEROX CORPORATIONInventors: Gary A. Kneezel, Peter J. John
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Publication number: 20040014827Abstract: A method of recycling a molded resin consisting mainly of a thermoplastic resin which comprises adding as a recycle aid agent a rubber-like material (material) which is compatible with the thermoplastic resin as the main component of the molded resin, is moldable after having been mixed with the resin, and has the property of improving impact strength. By this method, impact strength and flame retardancy are recovered or improved.Type: ApplicationFiled: June 17, 2003Publication date: January 22, 2004Applicant: Suzuka Fuji Xerox Co., Ltd.Inventor: Yasuhiro Suzuki