Abstract: Disclosed is an electrophotographic photoreceptor having a protective overcoat layer including a polyol binder; a hole transport material; a curing agent; and a surface-treated tin oxide particle filler. Also disclosed is a process for forming a photoreceptor that includes providing a photoreceptor substrate; applying a charge generating layer; applying a charge transport layer; and applying a protective overcoating layer over the substrate; such that the protective overcoat layer includes a polyol binder; a hole transport material; a curing agent; and a surface-treated tin oxide particle filler. Also included is a method of forming an image, including the disclosed photoreceptor.
Type:
Grant
Filed:
January 23, 2008
Date of Patent:
September 20, 2011
Assignee:
Xerox Corporation
Inventors:
Kathy L. De Jong, Yu Qi, Vladislav Skorokhod, Nan-Xing Hu, Johann Junginger, Markus Silvestri, John F. Yanus, Kenny-Tuan Dinh
Abstract: A system for switching on an electrical device includes a startup circuit for an associated electrical device. The electrical device has a main power circuit comprising first and second paths and a main switch for selectively connecting the electrical device with an associated power source. The startup circuit uses a pulse of electromagnetic energy transmitted wirelessly from an associated remote control device to form a third path, whereby power is supplied from the associated power source for actuating the main switch.
Abstract: An exposure device includes plural light emitting elements that light in turn for exposure, plural driving elements that drive each of the light emitting elements and a time changing member that changes one time period of a switching signal to switch light emitting elements driven by the driving elements among the plurality of light emitting elements in turn from a reference time, depending on an image forming speed, wherein the time changing member changes the one time period from the reference time for some of the light emitting elements during one main scan, and maintains the one time period as the reference time for the remaining light emitting elements.
Abstract: As provided herein, there are supplied teachings to systems and methods for resizing a halftone image using halftone tile parameters. One approach entails receiving into a digital imaging system, a digital halftone image and a desired resizing factor for the digital halftone image. Subsequently the system will define cells within the digital halftone image and determine from those cells, a number of halftone tile seams to suitable for manipulation. The orientation of these halftone tile seams is dictated by the received desired resizing factor. The energy of the number of halftone tile seams is determined according to an energy metric so as to provide indication of at least one low energy determined halftone tile seam. A resizing of the halftone image is then performing by manipulating at least one low energy halftone tile seam in the halftone image. The resized halftone image may then be printed on a printer.
Abstract: A forum monitoring device allows an agent to monitor the traffic in a computer-mediated discussion. When the agent determines that there is a significant degree of traffic on a particular topic, or other predetermined rules are satisfied, the agent proposes to the contributors of messages on that topic that a new discussion forum, for example, a new discussion list, be created. If any of the contributors agrees to this suggestion, a new discussion forum, or child forum, is created by the agent. The agent and the contributors are then automatically subscribed to the child forum, and an invitation to join the new forum is sent optionally to the full membership of the parent forum plus any other recipients of postings on the topic.
Type:
Grant
Filed:
November 22, 2000
Date of Patent:
September 20, 2011
Assignee:
Xerox Corporation
Inventors:
Michelle Q. Wang Baldonado, Bay-Wei W. Chang
Abstract: To perform notes detection, candidate reference marks are identified in a document. A starting note zone is identified in the document. A pair of similar reference marks is identified from the candidate reference marks including a first reference mark in the note zone and a second reference mark outside the note zone. The document is marked up to indicate a note associated with the first and second reference marks.
Abstract: A material supplying container and an image forming apparatus are provided. The material supplying container includes two or more containers each of which contains a material; supply openings respectively formed in and corresponding to the containers; and seal members that respectively close the supply openings, wherein the supply openings can be opened by simultaneously operating the seal members.
Abstract: A marking apparatus including a traveling wave grid toner transport circuit structure for transporting powdered toner along a transport surface, and electromechanical elements for selectively enabling toner patches to be projected to an output medium by a projecting electric field.
Type:
Grant
Filed:
July 31, 2008
Date of Patent:
September 20, 2011
Assignee:
Xerox Corporation
Inventors:
Meng H Lean, Shu Chang, Baomin Xu, Karl A Littau, David G Duff
Abstract: A composite right/left-handed line device includes plural electrodes, plural dielectric substances and plural magnetic substances. The plurality of electrodes each include a pair of electrode plates, and a connection piece connected to the pair of electrode plates. The plurality of electrodes are disposed at regular intervals in a thickness direction between a pair of input terminals and a pair of output terminals. The plurality of dielectric substances are interposed between opposite surfaces of the pairs of electrode plates of adjacent two of the electrodes. The plurality of magnetic substances are disposed adjacently to the dielectric substances, respectively. The plurality of magnetic substances are interposed between opposite surfaces of the connection pieces of adjacent two of the electrodes.
Abstract: Systems and methods are provided for controlling cleaning devices in image forming apparatus electrostatic image forming apparatus. Such systems may include a charge receptor, movable in a process direction, defining a main surface. A toner application device applies toner to the charge receptor, and is configured to place a lubrication stripe including the toner on a portion of the main surface of the charge receptor at a selected time. An influence of at least one corotron on the charge receptor is modified, during the designated rotations of the charge receptor, while the portion of the surface on which the lubrication stripe is formed, or will be formed, is passing the at least one corotron. The lubrication stripe is delivered to a secondary cleaning device including a blade engaging with the photoreceptor surface to lubricate the blade.
Type:
Grant
Filed:
August 20, 2008
Date of Patent:
September 20, 2011
Assignee:
Xerox Corporation
Inventors:
Robert Arnold Gross, Michael Nicholas Soures, Robert Steven Pozniakas, Michael Lu
Abstract: What is disclosed is a novel system and method for encoding/decoding data in a cover contone image via halftone dot orientation modulation. Arrays of halftone threshold values are used to determine a desired orientation, e.g. 0/90°+/?45° for a given single data value of the original message to be embedded. Message data is embedded as a function of halftone dot orientation. Detection modeling of the print-scan process enables the determination of dot orientation from the image scan via statistically motivated image moments. A probabilistic model of the print-scan channel conditions received moments on input orientation. Density values of the received moments are used to determine dot orientation for each halftone cell. The embedded data is retrieved based on the determined orientations. The present method is applicable to areas of data embedding, document security, and the like.
Type:
Grant
Filed:
September 10, 2008
Date of Patent:
September 20, 2011
Assignee:
Xerox Corporation
Inventors:
Vishal Monga, Gaurav Sharma, Orhan Bulan
Abstract: Accurate sheet leading edge registration system and method including a first and second nip assembly, a first sheet leading edge sensor and a controller. The first and second nip assemblies being spaced apart from one another. The first sheet leading edge sensor capable of detecting an arrival of a leading edge of a sheet at a point in the process direction. The arrival being associated with engagement of the first and second nip assemblies with the sheet. The controller capable of imparting a rotational skew velocity to the sheet using the first and second nip assemblies. A center of rotation of the skew velocity being offset laterally from a center of the sheet leading edge. The method includes providing at least the above-mentioned nip assemblies, first sheet leading edge sensor and controller.
Abstract: According to aspects illustrated herein, there is provided a method, a system, and a printmaking device for calibrating sensors. The method begins by transporting a media sheet along a media path, the sheet having a lead edge, a trail edge and a measurement edge. Next, the method halts the forward motion of the sheet after the lead edge of the sheet passes a fixed reference. After that, the method moves the sheet laterally relative to the media path across the at least one edge sensor using a sheet actuator. Then, the method records an actual position of the sheet actuator and an output of at least one edge sensor. Finally, the method calculates a calibration factor based on the actual position of the sheet actuator and the output of the at least one edge sensor.
Type:
Grant
Filed:
August 26, 2009
Date of Patent:
September 20, 2011
Assignee:
Xerox Corporation
Inventors:
Joannes N. M. deJong, Lloyd A. Williams
Abstract: Disclosed herein is a method of preparing production tickets that involves selecting order data from at least a first data field in an ordering system, feeding the selected order data to a workflow management system, and generating a production ticket for a print production job using at least a portion of the selected order data to name the print production job. One embodiment employs a join identifier to include several related files on the same production ticket. Corresponding configuration tools and workflow management systems also are disclosed.
Type:
Grant
Filed:
June 30, 2006
Date of Patent:
September 20, 2011
Assignee:
Xerox Corporation
Inventors:
Donald M. Pangrazio, III, Anthony J. Leone, III, Michael J. Evan, Connie C. He, Nisha Pan, Yolanda Palomo
Abstract: A method and system reconstructs a contone image from a binary image by first tagging pixels to identify one of a multiplicity of image content types. The tag information and the pattern of bits surrounding the pixel to be converted to a contone value are used to reconstruct a contone image from a binary image. The pattern of bits in the neighborhood is used to generate a unique identifier. The unique identifier is used as the address for a lookup table with the contone value to be used wherein each lookup table corresponds to an image context type.
Type:
Grant
Filed:
March 8, 2010
Date of Patent:
September 20, 2011
Assignee:
Xerox Corporation
Inventors:
Ramesh Nagarajan, Francis Kapo Tse, Chia-Hao Lee, John Christopher Cassidy, John W. Wu
Abstract: A surface emitting semiconductor laser includes: a semiconductor substrate; a lower reflector that is formed on the semiconductor substrate and includes a semiconductor multilayer of a first conduction type; an upper reflector that is formed above the semiconductor substrate and includes a semiconductor multilayer of a second conduction type; an active region interposed between the lower reflector and the upper reflector; a current confining layer that is interposed between the lower reflector and the upper reflector and has a conductive region having an anisotropic shape in a plane perpendicular to an optical axis; and an electrode that is formed on the upper reflector and has an opening via which a laser beam is emitted, the opening having different edge shapes in directions of the anisotropic shape.
Abstract: An image forming apparatus comprises: a housing that is fixedly placed in the image forming apparatus and integrally accommodates an imaging portion that includes at least an image holding member; a transferring unit that is disposed against the image holding member so that the transferring unit is capable of pressing and separating the image holding member; and a high-voltage power supplying unit that supplies a high voltage, wherein a power supplying path that is formed on an outer surface of the housing so that the high voltage is supplied from the high-voltage power supplying unit to the imaging portion and the transferring unit via the power supplying path.
Abstract: A particle behavior analysis method uses plural computers connected via a network to analyze particle behavior considering an interaction force with a different substance acting on a particle. The method includes analyzing the particle behavior by using a force decomposition paralleling algorithm using a force matrix considering at least two or more types of interaction forces.
Abstract: A printing system and method using alternating control modes for one or more, but not all, sheet transport devices in order to avoid contention. In a printer having first, second and third sheet transport devices in series (e.g., registration, image transfer and image fixing devices), the second device can always operate in a velocity control mode. However, the first and/or third devices can alternate between velocity and torque control modes. For example, the first device can operate in a torque control mode, when a sheet is concurrently engaged by both the first and second devices, and in a velocity control mode at other times. Additionally or alternatively, the third device can operate in a torque control mode, when a sheet is concurrently engaged by both the second and third devices, and in a velocity control mode at other times. Transition control modes can be implemented to generate smooth transitions between modes.
Type:
Grant
Filed:
May 27, 2010
Date of Patent:
September 20, 2011
Assignee:
Xerox Corporation
Inventors:
Marina Tharayil, Barry P. Mandel, Joannes N. deJong, Lloyd A. Williams
Abstract: An information processing device that is connected to a projecting device that projects an annotation image input from an external terminal a projection area including an object and a background, and is connected to an image capture device that captures an image of the projection area including the object and the background, includes: a detecting unit that detects movement of the object from an image captured by the image capture device; an extracting unit that extracts a changed region that is caused in the captured image by the movement of the object; and a processing unit that performs processing on at least one of the captured image and the annotation image, when the annotation image exists in the changed region.