Patents by Inventor Yee S. Ng

Yee S. Ng 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).

  • Patent number: 8588671
    Abstract: By using a high or low viscosity transparent toner, with respect to the other color toners, and different amounts of transparent toner lay-down, the gloss of an image printed by an electrophotographic device may be adjusted. By also applying the transparent toner as a negative mask, the differential gloss of the image may be reduced while still adjusting the gloss of certain portions of the image. Further, because different gloss levels may appear different at different viewing angles, transparent toner may be laid down to encode a transparent image within the image being printed. Such a transparent image may be useful as, for example, an authentication means for a document. Additionally, by varying the gloss levels on particular aspects of a printed image, multiple images of different gloss levels, which are prominent at different viewing angles can be made, thereby, a three-dimensional image effect can be achieved on the printed page.
    Type: Grant
    Filed: October 22, 2010
    Date of Patent: November 19, 2013
    Assignee: Eastman Kodak Company
    Inventors: Yee S. Ng, Hwai-Tzuu Tai
  • Patent number: 8164790
    Abstract: Methods of improving image quality by reducing grain and texture in a printed image are provided. According to one embodiment, a method of reducing grain and texture in an image includes the steps of providing a light color toner and a dark color toner, providing an aperiodic micrononuniformity map, using the aperiodic micrononuniformity map to determine an acceptable domain that includes a plurality of combinations of the light color toner and the dark color toner, and forming an image by selecting one combination of the light color toner and the dark color toner from the plurality of combinations of the light color toner and the dark color toner.
    Type: Grant
    Filed: March 5, 2009
    Date of Patent: April 24, 2012
    Assignee: Eastman Kodak Company
    Inventors: Yee S. Ng, Mamie Kam Ng, legal representative, Hwai-Tzuu Tai, Peter S. Alexandrovich, Chung-Hui Kuo
  • Patent number: 8092970
    Abstract: A method and system for printing adjustable gloss image documents using a variety of toners where some toners have a relatively low melt viscosity and others have a relatively high melt viscosity. These toners are co-printed prior to fixing, on the receiver proximate to and overlying at least a portion of each other.
    Type: Grant
    Filed: May 15, 2008
    Date of Patent: January 10, 2012
    Assignee: Eastman Kodak Company
    Inventors: Dinesh Tyagi, Yee S. Ng, Mark C. Zaretsky
  • Patent number: 8005415
    Abstract: A tandem color electrostatographic printer apparatus has five or more color printing stations or modules for applying respective color separation toner images to a receiver member to form a pentachrome color image in a single pass. A fuser station fuses the pentachrome color image. A clear toner overcoat is then applied to the fused pentachrome toner image and enhanced glossing of the image is provided by a belt glosser to improve color gamut.
    Type: Grant
    Filed: February 24, 2010
    Date of Patent: August 23, 2011
    Assignee: Eastman Kodak Company
    Inventors: Yee S. Ng, Robert C. Logel
  • Publication number: 20110141525
    Abstract: The present invention relates to methods of improving color image quality by optimization of the gray level screens including blending a plurality of gray level screens to reducing the color grain noise and maintaining larger color gamut for the pictorial color imagery in the color printing systems that utilize gray level (multi-level) printing.
    Type: Application
    Filed: December 15, 2009
    Publication date: June 16, 2011
    Inventors: Yee S. Ng, Hwai-Tzuu Tai, Chung-Hui Kuo, Marnie Kan-Ng
  • Patent number: 7924460
    Abstract: A method for color correction of an image having an insignia portion in a multi-module printer (10). A first color profile is calibrated for a four-color image. A second color profile is calibrated for a four-color image with a transparent toner layer on top of the insignia portion of the four-color image. The image data is then buffered in a color input band buffer (40) and processed through the first (50) and second (60) color profiles in a color management module. The processed image data is stored in an output band buffer (70, 80) corresponding to the image data processed through each color profile. Clear toner input band data stored in a clear toner input band buffer (30) is compared with the processed image data in each output band buffer (70, 80) to select an output signal (100) on a per pixel basis to send to the multi-module printer (10).
    Type: Grant
    Filed: August 22, 2007
    Date of Patent: April 12, 2011
    Assignee: Eastman Kodak Company
    Inventor: Yee S. Ng
  • Publication number: 20110039202
    Abstract: By using a high or low viscosity transparent toner, with respect to the other color toners, and different amounts of transparent toner lay-down, the gloss of an image printed by an electrophotographic device may be adjusted. By also applying the transparent toner as a negative mask, the differential gloss of the image may be reduced while still adjusting the gloss of certain portions of the image. Further, because different gloss levels may appear different at different viewing angles, transparent toner may be laid down to encode a transparent image within the image being printed. Such a transparent image may be useful as, for example, an authentication means for a document. Additionally, by varying the gloss levels on particular aspects of a printed image, multiple images of different gloss levels, which are prominent at different viewing angles can be made, thereby, a three-dimensional image effect can be achieved on the printed page.
    Type: Application
    Filed: October 22, 2010
    Publication date: February 17, 2011
    Inventors: Yee S. Ng, Hwai-Tzuu Tai
  • Publication number: 20110038655
    Abstract: By using a high or low viscosity transparent toner, with respect to the other color toners, and different amounts of transparent toner lay-down, the gloss of an image printed by an electrophotographic device may be adjusted. By also applying the transparent toner as a negative mask, the differential gloss of the image may be reduced while still adjusting the gloss of certain portions of the image. Further, because different gloss levels may appear different at different viewing angles, transparent toner may be laid down to encode a transparent image within the image being printed. Such a transparent image may be useful as, for example, an authentication means for a document. Additionally, by varying the gloss levels on particular aspects of a printed image, multiple images of different gloss levels, which are prominent at different viewing angles can be made, thereby, a three-dimensional image effect can be achieved on the printed page.
    Type: Application
    Filed: October 22, 2010
    Publication date: February 17, 2011
    Inventors: Yee S. Ng, Hwai-Tzuu Tai
  • Patent number: 7877053
    Abstract: By using a high or low viscosity transparent toner, with respect to the other color toners, and different amounts of transparent toner lay-down, the gloss of an image printed by an electrophotographic device may be adjusted. By also applying the transparent toner as a negative mask, the differential gloss of the image may be reduced while still adjusting the gloss of certain portions of the image. Further, because different gloss levels may appear different at different viewing angles, transparent toner may be laid down to encode a transparent image within the image being printed. Such a transparent image may be useful as, for example, an authentication means for a document. Additionally, by varying the gloss levels on particular aspects of a printed image, multiple images of different gloss levels, which are prominent at different viewing angles can be made, thereby, a three-dimensional image effect can be achieved on the printed page.
    Type: Grant
    Filed: December 20, 2004
    Date of Patent: January 25, 2011
    Assignee: Eastman Kodak Company
    Inventors: Yee S. Ng, Hwai-Tzuu Tai
  • Publication number: 20100224090
    Abstract: Methods of improving image quality by reducing grain and texture in a printed image are provided. According to one embodiment, a method of reducing grain and texture in an image includes the steps of providing a light color toner and a dark color toner, providing an aperiodic micrononuniformity map, using the aperiodic micrononuniformity map to determine an acceptable domain that includes a plurality of combinations of the light color toner and the dark color toner, and forming an image by selecting one combination of the light color toner and the dark color toner from the plurality of combinations of the light color toner and the dark color toner.
    Type: Application
    Filed: March 5, 2009
    Publication date: September 9, 2010
    Inventors: Yee S. Ng, Hwai-Tzuu Tai, Peter S. Alexandrovich, Chung-Hui Kuo
  • Patent number: 7777773
    Abstract: Image quality assessment test charts and objective image quality measurement systems may be used to evaluate the printer sub-system health before artifacts become objectionable to human observers. Diagnostic images may be printed to allow measurement of a number of system performance attributes, such as: density, banding, streak, granularity, mottle, color, gloss, gloss uniformity, edge gradient, raggedness, sharpness, background, registration, line width, and satellite measurements. By comparing these measurements to historical values or ideal values of the same measurements, preventive maintenance suggestions may be generated to avoid both unnecessary maintenance and objectionable print quality.
    Type: Grant
    Filed: January 18, 2005
    Date of Patent: August 17, 2010
    Assignee: Eastman Kodak Company
    Inventors: Yee S. Ng, Eric K. Zeise
  • Patent number: 7755802
    Abstract: In the method, a digital image is received. A granularity model is constructed of each of the toner stations. A noise table is produced. The noise table is based on the granularity models and is adaptive to the content of the digital image. Noise is reduced in the digital image using the noise table. The digital image is divided into a plurality of color records, each corresponding to a respective toner station. The color records of the noise reduced digital image are printed using respective toner stations. Each granularity model defines a toner applied by the respective toner station.
    Type: Grant
    Filed: August 24, 2007
    Date of Patent: July 13, 2010
    Assignee: Eastman Kodak Company
    Inventors: Hwai-Tzuu Tai, Yee S. Ng, Stephen E. Johnson, Jennifer S. DeYoung
  • Publication number: 20100150620
    Abstract: A tandem color electrostatographic printer apparatus has five or more color printing stations or modules for applying respective color separation toner images to a receiver member to form a pentachrome color image in a single pass. A fuser station fuses the pentachrome color image. A clear toner overcoat is then applied to the fused pentachrome toner image and enhanced glossing of the image is provided by a belt glosser to improve color gamut.
    Type: Application
    Filed: February 24, 2010
    Publication date: June 17, 2010
    Inventors: Yee S. Ng, Robert C. Logel
  • Patent number: 7720425
    Abstract: A tandem color electrostatographic printer apparatus has five or more color printing stations or modules for applying respective color separation toner images to a receiver member to form a pentachrome color image in a single pass. A fuser station fuses the pentachrome color image. A clear toner overcoat is then applied to the fused pentachrome toner image and enhanced glossing of the image is provided by a belt glosser to improve color gamut.
    Type: Grant
    Filed: January 16, 2009
    Date of Patent: May 18, 2010
    Assignee: Eastman Kodak Company
    Inventors: Yee S. Ng, Robert C. Logel
  • Patent number: 7688476
    Abstract: A method and apparatus for transmitting and receiving image data and control characters across an interface that is subject to noise for output to a printer. The image data and the control characters are transmitted across the interface to a receiver device. A determination is made as to whether or not a line of image data has been sufficiently transferred to the receiver device and, if the current line of image data has not been sufficiently transferred, there is provided for output to the printer a prior sufficiently received line of image data in replacement of the current line of image data so that the prior line of image data is printed at least twice in succession.
    Type: Grant
    Filed: January 3, 2005
    Date of Patent: March 30, 2010
    Assignee: Eastman Kodak Company
    Inventors: Yee S. Ng, Shawn E. O'Hara, Robert P. Dutt
  • Publication number: 20090286177
    Abstract: A method and system for printing adjustable gloss image documents using a variety of toners where some toners have a relatively low melt viscosity and others have a relatively high melt viscosity. These toners are co-printed prior to fixing, on the receiver proximate to and overlying at least a portion of each other.
    Type: Application
    Filed: May 15, 2008
    Publication date: November 19, 2009
    Inventors: Dinesh Tyagi, Yee S. Ng, Mark C. Zaretsky
  • Patent number: 7599634
    Abstract: Forming a multicolor image on a receiver member wherein a database of custom color profiles based on substrate physical properties and printing process characteristics is established. A set of universal color profiles is determined based on physical properties of substrates from clustered custom profiles. One universal color profile is assigned to a target substrate from the set of universal color profiles based on objective or subjective feedback. Thereafter, a multicolor toner image is formed on the receiver member with toners of at least three different colors of toner pigments which form various combinations of colors at different pixel locations on the receiver member to form the multicolor toner image thereon using the assigned one color profile. Based on objective or subjective feedback, the selected one universal color profile is modified, or a different universal color profile is selected.
    Type: Grant
    Filed: April 13, 2007
    Date of Patent: October 6, 2009
    Assignee: Eastman Kodak Company
    Inventors: Chung-Hui Kuo, Yee S. Ng, Hwai-Tzuu Tai, Dmitri A. Gusev
  • Publication number: 20090123204
    Abstract: A tandem color electrostatographic printer apparatus has five or more color printing stations or modules for applying respective color separation toner images to a receiver member to form a pentachrome color image in a single pass. A fuser station fuses the pentachrome color image. A clear toner overcoat is then applied to the fused pentachrome toner image and enhanced glossing of the image is provided by a belt glosser to improve color gamut.
    Type: Application
    Filed: January 16, 2009
    Publication date: May 14, 2009
    Inventors: Yee S. NG, Robert C. LOGEL
  • Patent number: 7502582
    Abstract: A tandem color electrostatographic printer apparatus has five or more color printing stations or modules for applying respective color separation toner images to a receiver member to form a pentachrome color image in a single pass. A fuser station fuses the pentachrome color image. A clear toner overcoat is then applied to the fused pentachrome toner image and enhanced glossing of the image is provided by a belt glosser to improve color gamut.
    Type: Grant
    Filed: December 22, 2004
    Date of Patent: March 10, 2009
    Assignee: Eastman Kodak Company
    Inventors: Yee S. Ng, Robert C. Logel
  • Publication number: 20090051979
    Abstract: In the method, a digital image is received. A granularity model is constructed of each of the toner stations. A noise table is produced. The noise table is based on the granularity models and is adaptive to the content of the digital image. Noise is reduced in the digital image using the noise table. The digital image is divided into a plurality of color records, each corresponding to a respective toner station. The color records of the noise reduced digital image are printed using respective toner stations. Each granularity model defines a toner applied by the respective toner station.
    Type: Application
    Filed: August 24, 2007
    Publication date: February 26, 2009
    Inventors: Hwai-Tzuu Tai, Yee S. Ng, Stephen E. Johnson, Jennifer S. DeYoung