Xerox Corporation

Robert Paul Herloski

Douglas E Proctor

Jagdish C Tandon

Paul Allen Hosier

John C Juhasz

Howard A Mizes

Jason Mathew LeFevre

Stuart Alan Schweid

Paul Michael Fromm

Roger Gaylord Leighton

Paul S Bonino

Charles J Urso, Iii

Timothy James Clark

Eric Dudley

Gaurav Sharma

Martin Edward Hoover

Jack Thomas Lestrange

David Clark Craig

Josef E Jedlicka

Jess Robert Gentner

Alain E Perregaux

Michael B Monahan

Edward W Smith, Jr

Thomas R Race

Eugene A Rogalski, Jr

Ronald L Antos

Jeffrey L Baniak

Robert P Loce

David Allen Mantell

Wencheng Wu

John Richard Andrews

Beilei Xu

Ramesh Nagarajan

Michael John Wilsher

R Enrique Viturro

Joseph C Sheflin

Gary Daniel Redding

Wayne A Buchar

Kenneth Russell Ossman

Roger Lee Triplett

Moritz Patrick Wagner

Ned J Seachman

Jonathan Byron Hunter

Robert J Kleckner

Kwok-Leung Yip

Rajinderjeet Singh Minhas

Kraig A Quinn

Joseph P Taillie

Richard H Tuhro

Shawn Patrick Updegraff

Daniel E Kuhman

Joseph Fredrick Casey

Stephen J Wenthe, Jr

William Matthew Harney

Thomas C McGraw

Martin J Pepe

Frederick O Hayes, Iii

Edgar E Price

Yiyi Guan

Pravin N Kothari

Ralph H Huedepohl

James R Norton

Paul A Hosier, Iii

Wooi L Yeoh

Alice Chien

Stephen J Wenthe Jr

Eugene A Rogalski Jr

A three-dimensional (3D) object printer includes a surface treatment system configured to treat layers of an object being formed by the printer with a moving ultraviolet (UV) laser. The movement of the laser is controlled with a scanning mirror system and the spot size of the laser is reduced with a focus lens having a numerical aperture in a range of about 0.5 to about 1.0.

System and method for forming nano-structures on substrates to provide predetermined physical characteristics to the substrates

A sensor array assembly including a first sensor array, a second sensor array and a mounting substrate. The first sensor array includes a first process direction width and a first photosite, while the second sensor array includes a second process direction width and a second photosite. The first and second sensor arrays are separately secured on the mounting substrate. The first photosite is in precision alignment with the second photosite.

Plurality of linear sensor arrays comprising plural process direction widths and photosites with submicron y-axis alignment between arrays

A lamp array for drying liquid ink on a media in a printing apparatus. The printing apparatus includes a transport system arranged to move the media through the printing apparatus in a process direction. The lamp array includes a plurality of lamps, each lamp of the plurality of lamps having a longitudinal axis arranged in a direction parallel to the process direction and adjacent to the transport system, wherein the plurality of lamps are equidistantly positioned substantially across a cross process width of the transport system.

Carbon filament lamp array

A hyperspectral imaging system, comprising an input polarizer arranged to receive and polarize a first light, a liquid crystal variable retarder to change a polarization of the first light in a wavelength-dependent manner, an output polarizer arranged to receive the wavelength-dependent polarized first light, a voltage source electrically connected to the liquid crystal variable retarder, a controller connected to the voltage source, the controller configured to control voltages applied to the liquid crystal variable retarder to control a retardance of the first light. A linear image sensor has a length extending in a direction to obtain images of the first light, the linear image sensor synchronized with the controller to collect the images as a function of retardance of the liquid crystal variable retarder after the first light passes through the output polarizer, for generation of an output signal corresponding to a portion of the linear image sensor.

Hyperspectral imaging system

An apparatus is disclosed. For example, the apparatus may include an array of a plurality of micromirrors, a light source to provide a light input at a near symmetric angle relative to a normal angle of each one of the plurality of micromirrors in the array, and an optic adjuster to adjust an off-axis light output of the plurality of micromirrors in the array when the plurality of micromirrors is in an on-state.

DMD-based imagers with minimized thermal loads in an off-state

Disclosed is a method of adjusting a plurality of optical elements associated with a printing system ROS. According to one exemplary embodiment, sensitivity analysis is performed on a computer model of the ROS system and an optical element alignment sequence is generated to minimize the number of optical element adjustments needed to achieve a predefined ROS performance.

Method of adjusting a plurality of optical elements associated with a ROS

A method of balancing responses of a plurality of sensor chips arranged generally in a linear array comprising: exposing the plurality of sensor chips to an absence of illumination; measuring a dark response of each photosensor of a plurality of photosensors; positioning a calibration piece within a field of view of the plurality of sensor chips other than a calibration sensor chip; illuminating a calibration standard and the calibration piece with a light source; measuring a light response of each photosensor of the plurality of photosensors; applying an offset to the light response of each photosensor of the plurality of photosensors by subtracting the dark response of each photosensor of the plurality of photosensors to obtain an offset light response for each photosensor of the plurality of photosensors; calculating a mean offset light response for each sensor chip of the plurality of sensor chips by averaging the offset light response for each photosensor of the plurality of photosensors in each sensor chip of the plurality of sensor chips; calculating a modified light response for each photosensor of the plurality of photosensors by modifying the offset light response for each photosensor of the plurality of photosensors based on the mean offset light response of the sensor chip comprising the respective photosensor, the mean offset light response of the calibration sensor chip, an initial mean offset light response of the sensor chip comprising the respective photosensor, and an initial mean offset light response of the calibration sensor chip; and, applying a first gain to the offset light response of each photosensor of the plurality of photosensors based on the modified light response of each respective photosensor to obtain a corrected light response of each photosensor of the plurality of photosensors.

System and method for calibrating a linear array using a calibration standard and a calibration piece with dark and light response measurements

A lamp array for drying liquid ink on a media in a printing apparatus. The printing apparatus includes a transport system arranged to move the media through the printing apparatus in a process direction. The lamp array includes at least one lamp having a longitudinal axis arranged in a direction parallel to the process direction and adjacent to the transport system.

A method of spatially and spectrally calibrating a spectrophotometer including: a) emitting a white light illumination output from a full width illumination source; b) illuminating a test patch with the white light illumination output; c) reflecting a portion of the white light illumination output from the test patch to form a white light reflected illumination output; d) receiving the white light reflected illumination output at first, second and third rows of photosensitive elements to form a first calibration data set; e) emitting a cyan light illumination output from the full width illumination source; f) illuminating the test patch with the cyan light illumination output; g) reflecting a portion of the cyan light illumination output from the test patch to form a cyan light reflected illumination output; and, h) receiving the cyan light reflected illumination output at the second and third rows of photosensitive elements to form a second calibration data set.

Spectral and spatial calibration illuminator and system using the same

A method for providing film-thickness analysis with a spectrophotometer includes configuring an illuminator to emit a light beam at a film deposited on a substrate surface, configuring a linear sensor to receive light reflecting off the deposited film on the substrate surface via a gradient index lens and a linear variable filter, and configuring a processor to determine thickness of the film based on spectral reflectivity of the film received from the linear sensor.

Use of a full width array imaging sensor to measure real time film thicknesses on film manufacturing equipment

Disclosed are methods and systems for compensating for process direction banding associated with a document processing system including a ROS. According to one exemplary embodiment, a ROS driver uses a plurality of beam delay/advance values to compensate for banding caused by an interaction of a halftone pattern and process direction density variations associated with the ROS.

Electronic banding compensation (EBC) of halftone-interaction banding using variable beam delays

Provided is a system for providing spectral analysis with a spectrophotometer. The system includes an illuminator positioned adjacent to a carrier having a surface; a linear sensor positioned adjacent to the carrier; and a micropatterned optical filter is positioned between the linear sensor and the carrier. The illuminator is configured to emit light at a material disposed over the surface. The linear sensor is configured to receive the light from the illuminator.

Spatially-resolved FWA spectrophotometer using micropatterned optical filters

The present disclosure relates to systems and computer-implemented methods for obtaining both high-resolution red-green-blue (RGB) data and other data of an image-bearing surface using a single sensor array. The technique includes obtaining, using a sensor array configured to obtain measurements of M&#x2267;4 different spectral sensitivity responses per output pixel at low resolution, spectrophotometric data representing a plurality of output pixels representing the image-bearing surface, determining, using at least one electronic processor and based on the spectrophotometric data, high-resolution RGB data representing the image-bearing surface, determining, using at least one electronic processor and based on the spectrophotometric data, additional data representing a plurality of output pixels representing the image-bearing surface, and outputting the high-resolution RGB data and the additional data.

Dual-use full-width array and methods for usage thereof

Growing community of inventors

Webster, NY, United States of America

Robert Paul Herloski