Patents Assigned to Xerox
  • Patent number: 5805952
    Abstract: A reproduction apparatus imaging material dispensing system has a replaceable and rotatable imaging material dispensing container from which an at least partially magnetically aitractable consumable imaging material is dispensed. There is an optical imaging material level sensing system mounted outside of the container for optically detecting the imaging material inside the container through translucent walls thereof and signaling an insufficient remaining quantity of imaging material. A magnetic brush cleaning system internally cleans imaging material from the inside of a annular translucent wall area of the container to provide and maintain relatively unobstructed such optical sensing. It can be provided by a stationary magnet mounted outside of but adjacent to the container to attract magnetically attractable imaging material to the inside of the container wall to form a magnetic cleaning brush to clean the translucent wall annular area.
    Type: Grant
    Filed: February 6, 1997
    Date of Patent: September 8, 1998
    Assignee: Xerox Corporation
    Inventors: Douglas W. Buch, Gene S. Serafine, Rhonda L. Staudt, Timothy G. Struczewski, Jack E. Van Duser
  • Patent number: 5805299
    Abstract: The present invention provides a facsimile apparatus making communication according to a standard protocol for G3 mode facsimile apparatus for receiving a file transferred from an opposite side facsimile apparatus, which comprises a receiving component for receiving a communication command, an analyzing component for determining whether the use of the received command is prohibited, and prohibited command processing means for selecting and executing one of predetermined processes which is considered most appropriate for the received command according to the circumstances, if the analyzing means determines that the use of the received command is prohibited.
    Type: Grant
    Filed: November 26, 1996
    Date of Patent: September 8, 1998
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Takashi Sakayama, Yoshiaki Tezuka, Yoshihiro Maei
  • Patent number: 5805734
    Abstract: A hybrid system for digitally screening black and white and/or color images using a number of imaging techniques is disclosed. A hybrid rendering system may be employed to improve image quality by rendering particular image areas according different halftoning schemes according to gray level.
    Type: Grant
    Filed: November 26, 1996
    Date of Patent: September 8, 1998
    Assignee: Xerox Corporation
    Inventor: Fritz F. Ebner
  • Patent number: 5805741
    Abstract: An image processing method for converting an image signal G input through an image input unit 11 into image signal G fitted to an image output unit 19. The method comprises the steps of superposing a harmonic component H of the image signal G in response to a level of the image signal G on the image signal G and sending the image signal G on which the harmonic component H is superposed to the image output unit 19. An image processing system for converting an image signal G input through an image input unit 11 into image signal G fitted to an image output unit 19. The system comprises harmonic component generation means 3 for generating a harmonic component H corresponding to the image signal G and harmonic component superposing means 34 for superposing the harmonic component H on the image signal G. Thereby, it is provided an image processing method and system for providing a sharp image good in gradation characteristic and granularity in a wide dynamic range.
    Type: Grant
    Filed: April 19, 1995
    Date of Patent: September 8, 1998
    Assignee: Fuji Xerox Co., Ltd.
    Inventor: Koichiro Shinohara
  • Patent number: 5805304
    Abstract: Input bit map image data having a resolution of 600 dpi is converted into multivalue image data MI having a resolution of 600 dpi by a binary-to-multivalue converting unit. The multivalue image data MI is converted into multivalue image data having a resolution of 400 dpi by a resolution converting unit. The edge direction of the multivalue image data is detected by an edge direction detecting unit, so as to obtain an edge direction detection flag. Based on the edge direction detection flag, an image data outputting unit outputs multivalue image data having a resolution of 400 dpi from the edge direction detecting unit.
    Type: Grant
    Filed: August 31, 1995
    Date of Patent: September 8, 1998
    Assignee: Fuji Xerox Co., Ltd.
    Inventor: Hiroshi Sekine
  • Patent number: 5803705
    Abstract: In a disk type sheet inverting and stacking system with rotatable disk units with sheet transporting slots, in which printed sheets outputted by a reproduction system are sequentially fed into those slots to be inverted by rotation of the disk units and then released from the slots at a stacking position, the sheet transporting slots of the disk units are provided with a convolute sheet path formed by plural internal sheet corrugating protuberances extending transversely across the slot from opposite sides of the slot, spaced along the slot, to form a convolute sheet corrugating sheet path within the slot to automatically increase the retention force of the sheet within the slot in proportion to an increase in the thickness or stiffness of the sheet, without substantially increasing the resistance to lateral movement of the sheet within the slot.
    Type: Grant
    Filed: April 3, 1997
    Date of Patent: September 8, 1998
    Assignee: Xerox Corporation
    Inventor: Thomas C. Keyes
  • Patent number: 5805964
    Abstract: An apparatus and process for reducing accumulation of toner from the surface of an electrode member in a development unit of an electrostatographic printing apparatus by providing an inorganic coating on at least a portion of the electrode member.
    Type: Grant
    Filed: April 29, 1997
    Date of Patent: September 8, 1998
    Assignee: Xerox Corporation
    Inventors: Santokh S. Badesha, Arnold W. Henry, George J. Heeks, J. Stephen Kittelberger, John G. VanDusen, Suresh K. Ahuja, Merlin E. Scharfe, Richard L. Schank, Mark J. Hirsch
  • Patent number: 5805958
    Abstract: A seal bearing assembly for seal a rotating member in a development system is disclosed. The seal bearing assembly includes a seal assembly; a cutter, in contacted with the seal assembly, for cutting a portion of the seal assembly to seal the seal assembly about the member; and a bearing assembly, enclosed by the seal assembly, rotatingly supporting the member.
    Type: Grant
    Filed: March 27, 1996
    Date of Patent: September 8, 1998
    Assignee: Xerox Corporation
    Inventor: Duane H. Fisk
  • Patent number: 5805323
    Abstract: An optical scanning apparatus comprises a first image formation optical system for shaping a diameter of a light beam emitted from a light source, deflection means for deflecting an incident light beam at a constant angular velocity, a second image formation optical system for forming the image with the light beam deflected by the deflection means on a surface to be scanned, and a third image formation optical system for forming the image with the light beam deflected by the deflection means on the surface to be scanned, wherein a locational relationship between the first image formation optical system and the deflection means is set so that the light beam can be incident on the deflection means in such a manner that the center of a flux of light of the light beam from the light source forms a predetermined angle relative to an axis perpendicular to a rotating axis of the deflection means, and the third image formation optical system is disposed in such a manner that the distortion of the scanning line formed
    Type: Grant
    Filed: February 20, 1997
    Date of Patent: September 8, 1998
    Assignee: Fuji Xerox Co., Ltd.
    Inventor: Junichi Ichikawa
  • Patent number: 5805724
    Abstract: A printing system for rendering marks on a recording medium receives a multi-level grey scale pixel value representing a pixel having a first resolution. A screening circuit generates a screened multi-level grey scale pixel value equal to (G.sub.L -V.sub.i)+(S.sub.i -Th)*Dmp.sub.vi *Mod.sub.Eff wherein G.sub.L is the maximum grey level value of the pixel, V.sub.i is equal to the multi-level grey scale pixel value of the first resolution, S.sub.i is equal to a screen value corresponding to a position of the pixel, the image classification of the pixel and a brightness/darkness setting, The threshold value, Dmp.sub.vi is a video dependent dampening factor, and Mod.sub.Eff is a modulation multiplication factor.
    Type: Grant
    Filed: September 24, 1996
    Date of Patent: September 8, 1998
    Assignee: Xerox Corporation
    Inventors: David J. Metcalfe, Roger L. Triplett, John T. Newell, Xiao-fan Feng
  • Patent number: 5805179
    Abstract: An office machine having a pair of printers includes a machine frame and a first printer mounted on the frame. A sheet transport assembly is mounted on the frame for moving sheets past the first printer along a sheet path. A second printer includes a printer cartridge having a cartridge frame and a thermal ink jet print head secured to the cartridge frame. An ink supply container is selectively secured to the cartridge frame so that it communicates with the ink jet print head. The ink supply container can be selectively removed from the cartridge frame. A carriage is mounted on the office machine frame so that the carriage can move in relation to the sheet path. The printer cartridge is removably mounted on the carriage. The carriage enables the printer cartridge to be selectively brought to a desired location in relation to the sheet path to allow the printer cartridge to print on a sheet travelling therepast.
    Type: Grant
    Filed: June 30, 1997
    Date of Patent: September 8, 1998
    Assignee: Xerox Corporation
    Inventors: Thomas N. Taylor, Robert A. Panos
  • Patent number: 5803628
    Abstract: A printing apparatus and method for printing on a recording medium at locations being determined by encoder pulses of an encoder signal generated by an encoder including an encoder pending circuit. The encoder pending circuit outputs an encoder pending signal indicating the generation of one of the encoder pulses during a current printing operation. A controller coupled to the encoder pending circuit, receives the encoder pending signal and generates an enable signal after the completion of the current printing operation. The method of printing includes receiving one of the encoder pulses; determining whether the received one of the encoder pulse is generated during a current printing operation and completing the current printing operation before responding to the received one of the encoder pulses.
    Type: Grant
    Filed: July 1, 1996
    Date of Patent: September 8, 1998
    Assignee: Xerox Corporation
    Inventor: Frederick A. Donahue
  • Patent number: 5805714
    Abstract: A noise suppressor in an image forming apparatus suppresses noise from a drive mechanism during operation. An operation start signal of the drive mechanism is detected. A previously stored secondary sound having a reversed waveform to the waveform of the noise is generated at a noise suppressing position based on the drive operation start signal.
    Type: Grant
    Filed: October 18, 1996
    Date of Patent: September 8, 1998
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Minoru Kasama, Koji Udagawa, Masahiro Mori
  • Patent number: 5804349
    Abstract: A toner comprised of pigment, and an addition polymer resin generated from about 55 to about 80 weight percent of styrene, from about 1 to about 25 weight percent of acrylate, from about 1 to about 20 weight percent of acrylonitrile, and from about 0.5 to about 5 weight percent of acrylic acid.
    Type: Grant
    Filed: August 7, 1997
    Date of Patent: September 8, 1998
    Assignee: Xerox Corporation
    Inventors: Beng S. Ong, Grazyna E. Kmiecik-Lawrynowicz, Raj D. Patel, Walter Mychajlowskij, David J. Sanders, T. Hwee Ng
  • Patent number: 5805333
    Abstract: An infrared ray transmissive conductive substrate contains (1) a solid surface showing a transparency to at least the near infrared region and (2) an indium-tin-oxide containing transparent electrode having a sufficient light transmission property to at least the near infrared region formed on the solid surface. The indium-tin-oxide containing transparent electrode is formed on the solid surface by coating the solid surface with a solution containing an organic indium compound and an organic tin compound and thermally decomposing the organic indium compound and organic tin compound-containing solution.
    Type: Grant
    Filed: July 29, 1996
    Date of Patent: September 8, 1998
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Hiroyuki Tanaka, Kaoru Torikoshi
  • Patent number: 5805294
    Abstract: An image reading unit has a line sensor for reading a document and producing image data. A line counter counts the number of lines that are scanned during a period from a start of reading by the image reading unit until a time point when an edge of the document is read. A ROM stores, in advance, a corresponding relationship between error accumulation values and the numbers of lines. A control section reads out, from the ROM, an error accumulation value corresponding to the number of lines counted by the line counter, and determines the position of the edge of the document in the auxiliary scanning direction by subtracting the readout error accumulation value from a product of the counted number of lines and the auxiliary scanning pitch, thereby detecting a document length in the auxiliary scanning direction.
    Type: Grant
    Filed: August 19, 1996
    Date of Patent: September 8, 1998
    Assignee: Fuji Xerox, Co., Ltd.
    Inventor: Sadao Furuoya
  • Patent number: 5804351
    Abstract: A toner for electrostatic-image development which comprises toner particles comprising a colorant and a binder resin, the toner particles having a volume-average particle diameter of from 3 to 9 .mu.m and a particle size distribution satisfying the following expressions (1) and (2):D16(v)/D50(v).ltoreq.1.475-0.036.times.D50(v) (1)D50(p)/D84(p).ltoreq.1.45 (2)wherein D16(v) and D50(v) represent, in terms of absolute value, a cumulative 16% diameter (.mu.m) and a cumulative 50% diameter (.mu.m), respectively, of a cumulative volume particle diameter distribution of the toner particles depicted from the larger diameter side, and D50(p) and D84(p) represent, in terms of absolute value, a cumulative 50% diameter (.mu.m) and a cumulative 84% diameter (.mu.m), respectively, of a cumulative population particle diameter distribution of the toner particles depicted from the larger diameter side.
    Type: Grant
    Filed: October 16, 1996
    Date of Patent: September 8, 1998
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Hiroshi Takano, Masanori Ichimura, Masaki Hashimoto, Hideyuki Akagi, Kazuya Furuta, Koji Fukushima, Masahiro Takagi, Kensaku Togao, Satoru Ishigaki, Michio Take, Yuka Ishihara
  • Patent number: 5802214
    Abstract: A scanner generates a first set of M-bit signals representing an image in a document. A default table translates the M-bit signals into linearized N-bit signals where M>N. A color image processing module processes the N-bit signals to generate an image-dependent look-up table which, thereafter, is loaded into the scanner. The scanner then generates a second set of M-bit signals using a high resolution re-scan of the same image. The second set of M-bit signals are translated into N-bit signals using the image-dependent look-up table to generate an electronic representation with enhancement characteristics.
    Type: Grant
    Filed: December 8, 1995
    Date of Patent: September 1, 1998
    Assignee: Xerox Corporation
    Inventors: Reiner Eschbach, William A. Fuss, Charles M. Hains
  • Patent number: 5802535
    Abstract: The apparatus prepares a plurality of documents, each of which potentially having a different portion changed in accordance with simple operations. Portions to be changed are determined automatically or are partly based on the user's instructions. Portions to be changed can be partially extracted and uniquely emphasized. A plurality of outputted documents corresponding to an original document are automatically formed, each outputted document having a selected design preference applied to selected portions.
    Type: Grant
    Filed: January 25, 1996
    Date of Patent: September 1, 1998
    Assignee: Fuji Xerox Co., Ltd.
    Inventor: Kazuo Shibuta
  • Patent number: 5802203
    Abstract: An image segmentation system segments images into component elements by modelling the image as a series of combined layers. The brightness of pixels within each layer is modelled as a parametric function of pixel position. Weights are assigned to each pixel position within each layer and describe how the layers are combined to form a recovered image. By modelling the image as a compilation of layers having different brightness functions, the system segments elements within an image, including text, when the image is corrupted by noise and when elements are combined, such as text and graphics. Enhanced image compression is obtained by modelling the image in multiple layers.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: September 1, 1998
    Assignee: Xerox Corporation
    Inventors: Michael Julian Black, Allan Douglas Jepson