Patents by Inventor Russell B. Rauch
Russell B. Rauch has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 6940536Abstract: A system architecture for scanned non-linearity correction in a printer uses any raster output scanner having scanned non-linearity profile previously stored in memory from a test station installed with any pixel board. The pixel board includes a correction table register wherein the pixel board utilizes the scanned non-linearity profile of the raster output scanner to calculate the correction table register to correct for pixel misregistration.Type: GrantFiled: November 7, 2002Date of Patent: September 6, 2005Assignee: Xerox CorporationInventors: Russell B. Rauch, Michael B. Neary, Mohammad H. Rahnavard, Michael J. Thomas, Thomas M. Baretsky
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Patent number: 6791595Abstract: A mirror mount adjusts the curvature of a cylindrical mirror along the optical axis of the mirror, typically the wobble correction mirror, to adjust the scanline bow for an optical scanner. By adjusting the curvature in the mirror mount of the cylindrical axis of the mirror in the plane parallel to the mirror, the scanline bows among multiple ROS's can be approximately equalized. A mirror mount has two fixed abutments on the upper edge of the cylindrical mirror and two moveable abutment points along the lower edge of the mirror. The mirror mount adjusts the curvature of the cylindrical mirror vertically for a horizontal beam to adjust the scanline bow for a single beam and approximately equalize the scanline bow for multiple. ROS units in the printing system. During the bow adjustment the cross sectional shape of the cylindrical mirror is naintained so that the cross scan spotsize is maintained during the adjustment.Type: GrantFiled: February 27, 2003Date of Patent: September 14, 2004Assignee: Xerox CorporationInventor: Russell B. Rauch
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Publication number: 20040169715Abstract: A mirror mount adjusts the curvature of a cylindrical mirror along the optical axis of the mirror, typically the wobble correction mirror, to adjust the scanline bow for an optical scanner. By adjusting the curvature in the mirror mount of the cylindrical axis of the mirror in the plane parallel to the mirror, the scanline bows among multiple ROS's can be approximately equalized. A mirror mount has two fixed abutments on the upper edge of the cylindrical mirror and two moveable abutment points along the lower edge of the mirror. The mirror mount adjusts the curvature of the cylindrical mirror vertically for a horizontal beam to adjust the scanline bow for a single beam and approximately equalize the scanline bow for multiple. ROS units in the printing system. During the bow adjustment the cross sectional shape of the cylindrical mirror is maintained so that the cross scan spotsize is maintained during the adjustment.Type: ApplicationFiled: February 27, 2003Publication date: September 2, 2004Applicant: Xerox CorporationInventor: Russell B. Rauch
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Publication number: 20040090522Abstract: A system architecture for scanned non-linearity correction in a printer uses any raster output scanner having scanned non-linearity profile previously stored in memory from a test station installed with any pixel board. The pixel board includes a correction table register wherein the pixel board utilizes the scanned non-linearity profile of the raster output scanner to calculate the correction table register to correct for pixel misregistration.Type: ApplicationFiled: November 7, 2002Publication date: May 13, 2004Applicant: Xerox CorporationInventors: Russell B. Rauch, Michael B. Neary, Mohammad H. Rahnavard, Michael J. Thomas, Thomas M. Baretsky
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Patent number: 6381209Abstract: The multi-channel optical head for recording and reading optical storage data has a write laser array for generating a plurality of write beams and a read laser array for generating a plurality of read beams. The write beams and the read beams share a common optical path with a first broadband non-polarizing beam splitter which directs the beams towards the optical recording medium or to a power detector and with a second broadband non-polarizing beam splitter which directs the write beams and the read beams to the optical recording medium and which directs the read beams, after retroreflection and information modulation from the optical recording medium, to be split by a beam splitter and focused onto a detector to provide focusing information and another detector which detects its intensity to read data and provides tracking information.Type: GrantFiled: September 28, 1999Date of Patent: April 30, 2002Assignee: Xerox CorporationInventors: Russell B. Rauch, Mark Shi Wang
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Patent number: 6373809Abstract: The multi-channel optical head for recording and reading optical storage data has a write laser array for generating a plurality of write beams and a read laser array for generating a plurality of read beams. The write beams and the read beams share a common optical path with a first broadband non-polarizing beam splitter which directs the beams towards the optical recording medium or to a power detector and with a second broadband non-polarizing beam splitter which directs the write beams and the read beams to the optical recording medium and which directs the read beams, after retroreflection and information modulation from the optical recording medium, to be split by a beam splitter and focused onto a detector to provide focusing information and another detector which detects its intensity to read data and provides tracking information.Type: GrantFiled: September 28, 1999Date of Patent: April 16, 2002Assignee: Xerox CorporationInventors: Russell B. Rauch, Mark Shi Wang
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Patent number: 6178031Abstract: The pixel clock of a raster output scanning (ROS) system modulates an emitted light beam to provide pixel placement along a scan line. A method calculates the pixel clock frequency shifts to correct non-linearity of the scan line in a ROS. A data smoothing polynomial is calculated for the non-linearity of the pixels along the scan line. The needed frequency shift based on the polynomial to the first or higher orders is calculated and stored in a frequency shift look-up table. The calculated frequency shift from the frequency shift lookup table modifies the nominal pixel clock frequency to correct for the measured scan linearity of the ROS by modulation of the light beam.Type: GrantFiled: December 20, 1999Date of Patent: January 23, 2001Assignee: Xerox CorporationInventors: Russell B. Rauch, Mohammad H. Rahnavard
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Patent number: 5889545Abstract: A single pass ROS system provides a plurality of latent images which may subsequently be developed in different colors. The ROS units are initially aligned so that each color image is precisely registered at the same relative position along the exposed area of a photoreceptor belt. The alignment is accomplished by forming a pair of opposed alignment apertures in the surface of the belt and detecting coincidence or lack of coincidence of signals generated by the beginning and end of each scan line. The correction is enabled by rotating the output window in the ROS system, a transmissive optical component with no optical power, subsequent to the ROS, to create the required rotation of the projected scan line. Once the initial X and Y-axis alignments are complete, subsequent alignment is maintained through subsequent passes by checking the positions of the previously identified pixels as they advance past additional lead edge apertures formed in the process direction along the belt surface.Type: GrantFiled: July 1, 1996Date of Patent: March 30, 1999Assignee: Xerox CorporationInventors: Russell B. Rauch, Anthony Ang, Edward Mycek
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Patent number: 5821971Abstract: The present invention is directed to a precise method of registering a plurality of ROS imagers, so as to form sequential registered images on a photoreceptor belt in a single pass. Pairs of belt holes are formed in the photoreceptor belt, outside the image area and outside of the scan width of the ROS imagers. A pair of light sources are incorporated into the post polygon optics of each ROS imager so as to produce a light spot at the photoreceptor surface which will periodically illuminate the holes on the belt. As the leading edge of the belt holes advances into the beams, detectors placed beneath the belt and beneath the exposure station provide signals representing the exposure level of the light source output. The position of a transmissive optical element with no optical power, subsequent to each of said ROS imagers, is adjusted in response to registration error signals generated by said photodetecting means to adjust the position of said scan lines.Type: GrantFiled: July 1, 1996Date of Patent: October 13, 1998Assignee: Xerox CorporationInventors: Russell B. Rauch, Anthony Ang, Edward Mycek
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Patent number: 5758034Abstract: The present invention is a method and apparatus for logic based resolution conversion of digital images. The invention employs an interlocked area mapping technique to provide one or more resolution converted bit planes of digital image data. The system has particular use in highlight color systems, wherein the highlight color data may be processed separately for each color plane, using the present invention, and then recombined to produce enhanced highlight color output.Type: GrantFiled: September 26, 1996Date of Patent: May 26, 1998Assignee: Xerox CorporationInventors: Robert P. Loce, Girmay K. Girmay, James F. Oathout, Abraham E. Claproth, Michael Branciforte, Shahriar Vazan, Russell B. Rauch
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Patent number: 5566024Abstract: Two sets of two single blazed binary diffractive optical elements form a beam separation control apparatus for expanding two closely spaced parallel beams into two wider spaced parallel beams or for contracting two wider spaced parallel beams into two closely spaced parallel beams. Four sets of two single blazed binary diffractive optical elements form a beam separation control apparatus for separating two closely spaced parallel beams into two wider spaced parallel beams for possible modulation or other optical effect, then returning the two beams to be closely spaced and parallel. A set of two adjacent and opposite single blazed binary diffractive optical elements can form a beam splitting apparatus or a beam combining apparatus.Type: GrantFiled: December 23, 1993Date of Patent: October 15, 1996Assignee: Xerox CorporationInventor: Russell B. Rauch
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Patent number: 5537252Abstract: A double blazed binary diffractive optical element beam splitter having alternating and opposing individual blazed diffraction gratings upon a multilevel surface relief phase grating structure for splitting an incident monochromatic light beam into a first and second diffracted light beams. The double blazed binary diffractive optical element and two single blazed binary diffractive optical elements can form either a beam splitting apparatus or a beam combining apparatus. Double blazed binary diffractive optical elements and sets of two single blazed binary diffractive optical elements can form beam splitting and combining apparatuses to produce a single beam or two closely spaced beams.Type: GrantFiled: December 23, 1993Date of Patent: July 16, 1996Assignee: Xerox CorporationInventor: Russell B. Rauch
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Patent number: 5315427Abstract: An optical system is disclosed which utilizes a pair of binary diffraction optic lenses to reprofile the intensity of a light beam. Both binary diffraction optic lenses have a plurality of segments. Depending on the shape of a desired intensity profile, each segment of the first binary diffraction optic lens either diverges or converges a portion of a light beam and as needed deflects the same portion of the beam. The second binary diffraction optic lens, which is located down stream of the first binary diffraction optic lens, has an equal number of segments as the first binary diffraction optic lens. Each segment of the second binary diffraction optic lens receives the light beam from a respective segment of the first binary diffraction optic lens and collimates the light beam.Type: GrantFiled: December 14, 1992Date of Patent: May 24, 1994Assignee: Xerox CorporationInventors: Russell B. Rauch, Ellis D. Harris
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Patent number: 5279724Abstract: A compact dual sputtering device which has two adjacent sputtering sections within a housing. The sputtering sections are arranged along a common axis with each section having a ring magnet circumscribed around the axis and a pole magnet, the center of which generally extends along the axis. The ring magnets are axially spaced from each other and the pole magnets are axially spaced from each other with each pole magnet being surrounded by a respective one of the ring magnets leaving a generally annular space between each of the pole magnets and a respective one of the ring magnets. Each section has a target area located on the outer surface of the housing at opposite axial ends of the housing. The housing has fluid inlet means and fluid outlet means and passage means connecting the annular space of one sputtering section with the annular space of the other sputtering section.Type: GrantFiled: December 26, 1991Date of Patent: January 18, 1994Assignee: Xerox CorporationInventors: Russell B. Rauch, Chuong V. Tran
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Patent number: 5148958Abstract: A cold welding system in which a dual sputtering device is rotated into a coating position between two stationary aligned substrates on a press and simultaneously coats both substrates and then is rotated out of the coating position so the coated substrates can be pressed together.Type: GrantFiled: December 23, 1991Date of Patent: September 22, 1992Assignee: Xerox CorporationInventors: Joseph Eskandari, Russell B. Rauch