Patents Assigned to Xerox
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Patent number: 6017385Abstract: An ink comprised of (1) a liquid aldehyde, a liquid acid, or mixtures thereof, (2) a solid additive aldehyde compound, a solid additive acid compound, or mixtures thereof, (3) a lightfastness UV absorber, (4) a lightfastness antioxidant, and (5) a colorant.Type: GrantFiled: May 7, 1999Date of Patent: January 25, 2000Assignee: Xerox CorporationInventors: Shadi L. Malhotra, Danielle C. Boils
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Patent number: 6018636Abstract: Changes in toner developability of toners in a liquid toner system are determined and compensated for by sensing the toner concentration and liquid toner volume in a tank, based on changes in the toner concentration and toner mass in the tank. Based on the foreground areas for a color separation layer corresponding to a particular toner, the developed area for that toner for one or more printed pages can be determined. From the developed area and the consumed mass of toner, a developed mass per unit area (DMA) can be determined. Based on the determined DMA, the sensed toner concentration and a voltage differential, the developability of the toner can be determined. Based on a target DMA, the sensed toner concentration and the determined developability of the toner, a new voltage differential can be determined.Type: GrantFiled: January 19, 1999Date of Patent: January 25, 2000Assignee: Xerox CorporationInventor: Edward B. Caruthers
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Patent number: 6018637Abstract: An electrostatographic reproduction machine including a movable photoconductive member having an image bearing surface; devices for forming a latent image electrostatically on the image bearing surface; a development unit including toner particles for developing the latent image to be transferred onto a sheet; a moving device for moving waste toner particles from the image bearing surface and from the development unit; and a waste developer material cartridge having a housing defining a surface area, a waste developer material chamber, and a waste developer material receiving opening for receiving waste developer material from the moving device, wherein the waste developer material cartridge housing has an accessible sealing device mounted over the receiving opening; and a label assembly reuseable as a sealing device for effectively resealing the accessibly-sealed waste developer material receiving opening during shipping of the cartridge.Type: GrantFiled: July 30, 1998Date of Patent: January 25, 2000Assignee: Xerox CorporationInventors: Timothy L. Huss, Paul M. Wegman
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Patent number: 6016516Abstract: To provide a device for processing remote procedures that makes it possible to easily obtain a desired service by combining multiple remote procedures, and that allows a user of a client application to know the parameters provided to each remote procedure and the execution results from each procedure. A message entered by a user is sent to a remote procedure server, and a first procedure execution component is selected from a first remote procedure holding component and executed. If a parameter contains a hyperlink, a corresponding message is generated by a message generating component and the message is sent to a second remote procedure holding component. The second remote procedure holding component receives the hypertext and analyzes it with a hypertext analysis component. After the first procedure execution component is executed, the parameters and execution results are sent back as hypertext by a hypertext generating component to the client.Type: GrantFiled: July 30, 1997Date of Patent: January 18, 2000Assignee: Fuji Xerox Co. Ltd.Inventor: Kazunori Horikiri
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Patent number: 6015645Abstract: A photoconductive imaging member comprised of a supporting substrate, a hole blocking layer, an optional adhesive layer, a photogenerator layer, and a charge transport layer, and wherein said blocking layer is comprised of a polyhaloalkylstyrene.Type: GrantFiled: May 29, 1998Date of Patent: January 18, 2000Assignee: Xerox CorporationInventors: Dasarao K. Murti, Daniel A. Foucher
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Patent number: 6016417Abstract: An intermediate transfer medium and the like for image formation includes transferring and fixing a toner image from a photoreceptor onto a recording medium such as paper by using the intermediate transfer medium. The intermediate transfer medium can yield a high gloss desirable for color image and the control of the driving run of the intermediate transfer medium can be maintained readily by reducing the frictional coefficient with the photoreceptor and the intermediate transfer medium can reduce the fog toner transfer rate to prevent the deterioration of the resulting image quality. The surface of the intermediate transfer medium where the image is primarily transferred (primary image transfer medium) is of smooth surface with protrusions dispersed thereon in a manner such that the smooth surface and the protrusions might be discriminated from each other. The relation between the area ratio of the smooth surface on the primary image transfer surface [Cin %] and the height of the protrusions [h (.mu.Type: GrantFiled: October 27, 1997Date of Patent: January 18, 2000Assignee: Fuji Xerox, Co., LtdInventors: Ryuji Katsuno, Masanori Kobayashi, Tatsuo Okuno, Chikara Ando, Kazuhiko Arai, Yoshihisa Kitano, Nobuhiro Katsuta, Yasuo Sakaguchi
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Patent number: 6015455Abstract: An ink jet recording ink comprising: (i) water, (ii) a water-soluble organic solvent, (iii) at least one dye having at least one carboxyl group in the form of a free acid, (iv) a substituted aromatic compound represented by general formula (I); and (v) at least one alkali metal hydroxide, wherein the pH value of the ink is from 8 to 12, and an ink jet recording method in which such ink droplets are discharged from an orifice according to a recording signal to record an image using this ink jet recording ink are disclosed, general formula (I) being: ##STR1##Type: GrantFiled: August 12, 1997Date of Patent: January 18, 2000Assignee: Fuji Xerox Co., Ltd.Inventors: Toshiyuki Yano, Hitoshi Kojima, Eisuke Hiraoka, Akihiko Chujo, Kaoru Watanabe, Hiromi Nagai, Yasuharu Endo, Ken Hashimoto
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Patent number: 6016204Abstract: 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: January 18, 2000Assignee: Xerox CorporationInventors: Roger W. Budnik, James M. Pacer, Guru B. Raj, Ralph A. Shoemaker, Michael G. Swales, Michael E. Beard
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Patent number: 6015144Abstract: A sheet feeder includes: air blowing device which blows air from a direction of side edges of a stack of sheets loaded in a predetermined location, paper feed device which separates one sheet from the stack of sheets to which air is blown by the air blowing device and which feeds the thus-separated sheet from the predetermined location, and air flow regulation device which is provided in an elevated position above the stack of sheets loaded in the predetermined location and which regulates the passage of the air flow blown toward the stack of sheets from the air blowing device.Type: GrantFiled: April 14, 1998Date of Patent: January 18, 2000Assignee: Fuji Xerox Co., Ltd.Inventors: Hajime Yoshii, Takuo Matsumura
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Patent number: 6015131Abstract: A simple system for mechanically lifting and securing a machine to vibration isolators. The system is unitary, compact, occupies space only under the machine and not protruding from the sides and allows the machine to be completely detached for servicing. The system includes a four bar linkage using two square supporting members as a chassie with the four bar linkage being mounted to vibration isolators that are welded to support plate. The four bar linkage is manipulated by two screws to easily and quickly raise the machine off its casters and restrain it in a fixed position. The two screws make detachment from the four bar linkage a simple and time efficient process for repairpersons.Type: GrantFiled: April 2, 1998Date of Patent: January 18, 2000Assignee: Xerox CorporationInventor: Charles R. Brewer, III
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Patent number: 6016490Abstract: A database management system for preventing deadlocks from occurring during control while securing execution rights and securing locks, for efficiently operating the application program in a multi-thread environment, and also for limiting the amount of time wasted in standby during synchronous processing for maintenance of execution rights. In this system, once the execution rights to the threads corresponding to a cache resource have been secured, a lock is secured on a transaction operated on a thread secured by an exclusive controller for a resource of a database corresponding to a resource in the cache resource. When a lock cannot be secured for a particular transaction, the exclusive controller informs the synchronization processor of a lock failure the previously secured execution right is automatically discarded so that execution rights to other threads in standby can be secured. In this way deadlocks regarding to control of thread operation are prevented from occurring.Type: GrantFiled: January 30, 1998Date of Patent: January 18, 2000Assignee: Fuji Xerox Co., Ltd.Inventors: Yoshiki Watanabe, Kei Tanaka, Hiroshi Hayata
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Patent number: 6016409Abstract: A fuser module, being a fuser subsystem installable in a xerographic printing apparatus, includes an electronically-readable memory permanently associated therewith. The control system of the printing apparatus reads out codes from the electronically-readable memory at install to obtain parameters for operating the module, such as maximum web use, voltage and temperature requirements, and thermistor calibration parameters.Type: GrantFiled: November 25, 1997Date of Patent: January 18, 2000Assignee: Xerox CorporationInventors: Michael E. Beard, Porfirio J. Perez, James F. Smoak, Edward C. Hanzlik, Paul M. Fromm, Ihor Kulbida
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Patent number: 6016205Abstract: In a digital copier in which the copies are made with a reciprocating ink-jet printhead, the original image to be copied is pre-scanned at high speed and low resolution, to identify an area in the original image having white space. If the white-space area in the original image is sufficiently large, the action of the printhead can be adapted to skip the corresponding area in the copy sheet in the printing process, thus increasing the overall throughput of the digital copier. An analogous technique can be used to identify non-halftone or non-color portions of an original image, which can be printed with fewer than a maximum number of passes of the printhead over a specific area of the copy sheet.Type: GrantFiled: August 22, 1997Date of Patent: January 18, 2000Assignee: Xerox CorporationInventors: Morton Silverberg, George J. Roller
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Patent number: 6015620Abstract: Disclosed is a recording sheet which comprises a substrate and a coating thereon comprising water and a surfactant capable of exhibiting a liquid crystalline phase in water at a temperature of about 25.degree. C. or higher, said coating containing the water and surfactant in relative concentrations such that upon addition of water to the coating, the surfactant undergoes a phase change, thereby increasing the viscosity of the coating. In one embodiment, the surfactant is in a lamellar liquid crystalline phase and, upon addition of water to the coating, the surfactant undergoes a phase change to a hexagonal liquid crystalline phase. Also disclosed are ink jet printing processes wherein an aqueous ink is applied to the aforementioned recording sheet.Type: GrantFiled: October 19, 1994Date of Patent: January 18, 2000Assignee: Xerox CorporationInventor: William M. Schwarz, Jr.
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Patent number: 6015146Abstract: An arrangement for controlling feeding in a bottom vacuum corrugation feeder when sheets with curl are encountered includes a timer and a sensor for detecting the negative pressure level in a vacuum plenum of the vacuum feeder. The vacuum pressure sensor gives a signal proportional to the degree of vacuum behind feeder belt holes that are in communication with the vacuum plenum. The vacuum pressure sensor is used to measure the instantaneous level of vacuum in the plenum, as well as, to detect the point at which sheet acquisition has occurred. The sensor is interrogated at predetermined intervals during the acquisition portion of the feed cycle. At each interval, the current pressure level detected in the vacuum plenum by the vacuum pressure sensor is compared to a reference value for that interval.Type: GrantFiled: January 8, 1998Date of Patent: January 18, 2000Assignee: Xerox CorporationInventor: Robert P. Siegel
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Patent number: 6013403Abstract: When the uniformly charged surface of a photoreceptor is exposed to an intensive light (a), a potential at an exposed position (Vx) is lower than a bias voltage (Vbias-A) of a first developing unit (b), toner A attaches to the exposed position (Vx) after its developing process, and its potential is lower than a bias voltage (Vbias-B) of a second developing unit (c). When the uniformly charged surface of a photoreceptor is exposed to a weak light, a potential at the exposed position (Vx) is lower than the bias voltage (Vbias-B) but higher than the bias voltage (Vbias-A) (e). Only toner B attaches to the photoreceptor (f). If the toner A and toner B belong to the same color family and are black toner and gray toner, an image of two density levels is formed, and the gradation and the graininess of the resultant picture are improved.Type: GrantFiled: August 20, 1998Date of Patent: January 11, 2000Assignee: Fuji Xerox Co., Ltd.Inventor: Junichi Ichikawa
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Patent number: 6014677Abstract: A document management device includes a database for storing and managing document data, a document retrieving device for retrieving the document data from the database, a document display for displaying at least one document data retrieved by the document retrieving device, and a format storage device for storing at least one evaluation format each of which has an identifier and a plurality of definitions of evaluation attributes. The evaluation format specifies the structure of evaluation data representing evaluation for the document data. A document selecting device allows for selection of one document data among the document data displayed, and a format selecting device allows for selection of one of the evaluation formats. An attribute value input device allows for inputting attribute values which are the result of evaluation for the document data selected by the document selecting device from the viewpoint represented by the evaluation attributes defined in the evaluation format.Type: GrantFiled: June 10, 1996Date of Patent: January 11, 2000Assignee: Fuji Xerox Co., Ltd.Inventors: Koichi Hayashi, Akifumi Sekijima
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Patent number: 6013160Abstract: The nucleation efficiency of a thermal ink jet printhead is improved by providing a heater resistor with a thin planar oxide film formed over a conductive heater resistive layer. In a preferred embodiment, zirconium diboride is sputtered onto a silicon substrate surface to form a first, electrically conductive base portion of the resistor. At a predetermined time, during the sputtering process, oxygen is introduced to form a thin film of ZrB.sub.2 O.sub.x. The surface of this film is very smooth having a surface roughness of <5 nm RMS.Type: GrantFiled: November 21, 1997Date of Patent: January 11, 2000Assignee: Xerox CorporationInventors: Alan D. Raisanen, Cathie J. Burke
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Patent number: 6014469Abstract: A system and method for noise filtering digital images is implemented in an automated image enhancement system without significantly reducing the performance of the automated image enhancement system. The system and method trigger a noise filter based on image measurements. If the image measurements indicate that the likelihood of objectionable "noise" in the image is high, a noise filter is triggered. Otherwise the noise filter is not triggered. In this way, only images that are in need of noise filtering are filtered, while other images are processed without the additional performance overhead required by the noise filter.Type: GrantFiled: December 31, 1996Date of Patent: January 11, 2000Assignee: Xerox CorporationInventor: Reiner Eschbach
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Patent number: 6014155Abstract: A printing machine composed of: (a) an electrographic imaging member including a substrate layer and a charge accepting layer selected from the group consisting of a silicone elastomer and a grafted elastomer composed of a polyorganosiloxane bonded to a fluoroelastomer; (b) latent image generating apparatus for recording an electrostatic latent image on the imaging member; (c) developer apparatus for depositing marking material on the imaging member to produce a marking material image; (d) a heating device for heating the imaging member so as to form a tackified marking material image thereon; and (e) transfer apparatus for transfering the tackified marking material image from the imaging member to a recording sheetType: GrantFiled: May 1, 1998Date of Patent: January 11, 2000Assignee: Xerox CorporationInventors: Joseph Mammino, Santokh S. Badesha