Abstract: The present invention relates to a pulse generation apparatus for generating a pulse signal having a pulse width controlled, and a pulse signal having a pulse width controlled with high precision is generated by a circuit suitable for conversion into LSI.
Abstract: An electrical component including a plurality of electrically conductive fibers in a matrix, wherein the matrix is prepared from a composition including a methyl methacrylate monomer and a modified bisphenol monomer, wherein the electrical component has a region at least substantially free of the matrix to provide a plurality of electrical contact points.
Type:
Grant
Filed:
July 22, 1999
Date of Patent:
April 10, 2001
Assignee:
Xerox Corporation
Inventors:
Lynn J. Bluett, Robert A. Gill, Joseph A. Swift
Abstract: An electronic network transaction recording system for accumulating billing data for printing machines interconnected to multiple work stations on the network. A network administrator includes a memory for storing data representing usage of selected printers and a decoder for validating a print job request and a billing account number. Requests for print jobs are verified and billed to an individual or group billing account number.
Abstract: A method and apparatus for determining the properties of roughness and thickness of a substrate to be processed through a machine, and correspondingly adjusting those machine parameters that are affected and which can be optimized based on varying levels of these substrate properties.
Type:
Grant
Filed:
August 28, 1995
Date of Patent:
April 10, 2001
Assignee:
Xerox Corporation
Inventors:
Thomas Acquaviva, Paul W. Morehouse, Jr.
Abstract: A photoconductive imaging member containing a photogenerating layer and a charge transport layer, and wherein the charge transport layer contains a poly(imide-carbonate) resin binder of (I) or (II)
wherein A, B and E are divalent linkages; D is a trivalent linkage in (I) and a tetravalent linkage in (II); and x and y represent mole fractions wherein the sum of x+y is equal to 1.
Abstract: A physical positioning system for a portable computing device equipped with an infrared receiver includes a light source removably attachable to a lighting fixture that supplies electrical power at a determined voltage. The light source has an attached voltage converter to provide a reduced supplied voltage. An infrared beacon is powered at the reduced supplied voltage through an electrical connection to the voltage converter. The infrared beacon broadcasts a data signal representative of a physical location.
Type:
Grant
Filed:
November 23, 1999
Date of Patent:
April 10, 2001
Assignee:
Xerox Corporation
Inventors:
Roy Want, David Goldberg, Anthony G. LaMarca, Todd A. Cass, Mark D. Weiser
Abstract: A process for immersion coating of a substrate including positioning a substrate having a top and bottom within a coating vessel having an inner surface to define a space between the inner surface and the substrate, filling at least a portion of the space with a coating mixture; stopping the filling slightly below the top of the substrate, initiating removal of the coating mixture at a gradually increasing rate to a predetermined maximum flow rate in a short predetermined distance, and continuing removal of the coating mixture at substantially the predetermined maximum flow rate to deposit a layer of the coating mixture on the substrate.
Type:
Grant
Filed:
December 17, 1999
Date of Patent:
April 10, 2001
Assignee:
Xerox Corporation
Inventors:
Kenny-tuan T. Dinh, Richard H. Nealey, John G. Matta
Abstract: A cleaning station for a fusing member has first and second cleaner rollers. The first cleaner roller is coated with a sticky or adhesive first toner layer. The first toner layer contacts the fuser member for cleaning. The second cleaner roller is coated with a sticky or adhesive second toner layer. The second toner layer is in contact with the first toner layer. The second cleaner roller defines apertures connecting to an internal reservoir. Excess toner from the second toner layer collects in the internal reservoir.
Abstract: A low-cost, high precision encoder system includes a codewheel and two encoder sensors mounted at opposite sides of the codewheel to form a dual sensor system having a corrected output that corrects for eccentricity in the mounting of the codewheel and the sensors. The encoder system has a correction circuit that provides a corrected output based on inputs received from the two encoder sensors, which can be single or multiple channel encoders. Methods for achieving the corrected output signal include measuring a time between a signal from the first encoder and a signal from the second encoder and halving this time. Methods for identifying a leading signal from the two sensors are also provided.
Type:
Grant
Filed:
January 19, 1999
Date of Patent:
April 10, 2001
Assignee:
Xerox Corporation
Inventors:
Roger Guy Markham, Anthony Edward Audi, Kristin Anne Hughes
Abstract: An image scanner apparatus scans a document and provides image data in digital form representing the scanned document. The compression apparatus detects characteristics of the image data and compresses the image data using parallel compressors, each employing a different encoding scheme. The apparatus then selects compressed image data encoded by one of the compressors in accordance with the detected characteristics and stores the selected data.
Abstract: A method and apparatus for interconnecting at least two devices. Each of the interconnected devices includes a contact structure for electrically and/or physically interconnecting the devices. Preferably, the contact structure for at least one of the devices includes a spring contact. An adhesive, such as a UV-curable adhesive, is applied to at least a portion of one of the devices, and once the adhesive is applied, the devices are assembled, i.e., brought into sufficient proximity so that the contact structures interconnect the devices. The adhesive can be applied directly to contact structures of one of the devices and/or can be applied to other portions of the devices so that the adhesive flows around the contact structures during assembly. The adhesive is then cured to bond the devices together.
Type:
Grant
Filed:
December 15, 1999
Date of Patent:
April 10, 2001
Assignee:
Xerox Corporation
Inventors:
Christopher L. Chua, David K. Fork, Patrick G. Kim, Linda Romano
Abstract: A process for fabricating electrophotographic imaging members including providing an imaging member including a substrate coated with a charge generating layer having an exposed surface, applying a first solution including a charge transporting small molecule and film forming binder to the exposed surface to form a first charge transporting layer having a thickness of greater than about 13 micrometers and less than about 20 micrometers in the dried state and an exposed surface, and applying at least a second solution having a composition substantially identical to the first solution to the exposed surface of the first charge transporting layer to form at least a second continuous charge transporting layer, the at least second charge transporting layer having a thickness in the dried state less than about 20 micrometers in the dried state, the at least second charge transporting layer, and any subsequent applied solution having a composition substantially identical to the first solution.
Type:
Grant
Filed:
September 29, 1999
Date of Patent:
April 10, 2001
Assignee:
Xerox Corporation
Inventors:
Kent J. Evans, David A. DeHollander, Michael S. Roetker
Abstract: An external addition toner that sufficiently exhibits the effect of an external additive and is excellent in transfer property, and an apparatus for forming an image and a process for forming an image excellent in general purpose property that provide an image of good quality without formation of image defects, such as transfer unevenness and drop off due to transfer failure of the toner. An external addition toner is employed, in which the shape coefficient of the toner particles, as well as a coating ratio x (%) of the external additive to a surface area of the toner particles, a volume average particle diameter D (&mgr;m) of the toner particles and a volume average particle diameter d (&mgr;m) of the external additive having the maximum average particle diameter satisfy the prescribed relationship.
Abstract: A toner composition comprised of binder, colorant, and a surface additive of a coated silica and wherein said silica possesses a BET surface area, in m2/g of from about 35 to about 65, a bulk density, in grams/liter, of from about 40 to about 60, and wherein the size diameter determined from the BET measurement is from about 20 to about 100 nanometers.
Abstract: A composition including a matrix comprised of particles comprised of a core resin and a shell resin thereover, wherein the core resin contains a covalently bonded photosensitive compound, and wherein the shell resin is the continuous phase of the matrix.
Type:
Grant
Filed:
July 22, 1999
Date of Patent:
April 10, 2001
Assignee:
Xerox Corporation
Inventors:
Eugenia Kumacheva, Jaan Noolandi, Olga Kalinina
Abstract: A photoconductive imaging member containing a photogenerator layer comprised of a mixture of bis(methylbenzimidazo)perinone, optionally an (alkylimido)perylene, such as (n-pentylimido)perylene or mixtures of (n-pentylimido)perylene, bisbenzimidazo(2,1-a-1′,2′-b)anthra(2,1,9-def:6,5,10-d′e′f′)diisoquinoline-6,11-dione and bisbenzimidazo(2,1-a:2′,1′-a)anthra(2,1,9-def:6,5,10-d′e′f′)diisoquinoline-10,21-dione, and a charge transport layer.
Type:
Grant
Filed:
June 27, 2000
Date of Patent:
April 10, 2001
Assignee:
Xerox Corporation
Inventors:
Mohammad Esteghamatian, Ah-Mee Hor, James M. Duff, C. Geoffrey Allen, Dasarao K. Murti
Abstract: A method for altering attribute values in a printing system with a user interface having a display screen is provided. A first user dialog having a first set of attribute values and a second user dialog having a second set of attribute values are selectively displayable on the display screen; while the first set of attribute values is alterable from a first user settable configuration to a first default configuration and the second set of attribute values is alterable from a second user settable configuration to a second default configuration.
Type:
Grant
Filed:
April 10, 1998
Date of Patent:
April 10, 2001
Assignee:
Xerox Corporation
Inventors:
Michael W. Barrett, Andrew T. Martin, Christie A. May, Andrea L. Carpenter, Anne E. Dewitte
Abstract: In an image forming method having the step of developing an electrostatic latent image on an electrostatic latent image carrying member using a toner layer on a developer carrying member, the step of transferring the developed toner image onto a belt transfer body 7 which is a first transfer body, and the step of transferring the toner image formed on the belt transfer body 7 onto a second transfer body 11, the surface resistance of the belt transfer body 7 is 108 to 1015 &OHgr;·cm, the toner is composed of at least resin particles containing a binding resin and a coloring material, and an additive, and the additive contains particles whose volume resistance is 107 to 1013 &OHgr;·cm.