Patents by Inventor Jyothsna Ram

Jyothsna Ram 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: 8676071
    Abstract: Apparatus and method for minimizing ghosting defects and process control instabilities for a printing system are disclosed. According to an exemplary embodiment, a controller retrieves uniformity measurements of an interdocument zone (IDZ) and sheet zone (SZ). In response to the uniformity measurements, a transfer current IDZ level is controlled to minimize differences in subsequent charging, photodischarge and/or development associated with the IDZ and SZ.
    Type: Grant
    Filed: January 18, 2011
    Date of Patent: March 18, 2014
    Assignee: Xerox Corporation
    Inventors: Charles H. Tabb, Eliud Robles-Flores, Moritz P. Wagner, Jyothsna Ram, Michael J. Turan, Robert E. Rosdahl, Jr.
  • Patent number: 8442407
    Abstract: Disclosed are printing methods, apparatus and systems for developing a latent image recorded on a surface, for example, a photoreceptor with developer material. According to an exemplary embodiment, the development method applies a development field voltage between a development station donor member and a development station transport member as a function of a humidity measurement associated with the developer material, the humidity measurement providing a surrogate tribo measurement of the developer material.
    Type: Grant
    Filed: July 27, 2010
    Date of Patent: May 14, 2013
    Assignee: Xerox Corporation
    Inventors: W. Bradford Willard, Kimberly Anne Stoll, David R. Stookey, Paul L. Jacobs, Robert W. Phelps, Jyothsna Ram
  • Publication number: 20120183316
    Abstract: Apparatus and method for minimizing ghost defect are disclosed. Ghosting results in interdocument bands when paper size is changed and process control instability due to using the interdocument zone (IDZ) for voltage and density control. A controller retrieves feedback measurements of the IDZ and sheet zone (SZ) non-uniformity. In response to the measurements, the transfer current IDZ level is controlled to minimize differences in subsequent charging, photodischarge and development.
    Type: Application
    Filed: January 18, 2011
    Publication date: July 19, 2012
    Applicant: XEROX CORPORATION
    Inventors: Charles H. Tabb, Eliud Robles-Flores, Moritz P. Wagner, Jyothsna Ram, Michael J. Turan, Robert E. Rosdahl, JR.
  • Publication number: 20120028173
    Abstract: Disclosed are printing methods, apparatus and systems for developing a latent image recorded on a surface, for example, a photoreceptor with developer material. According to an exemplary embodiment, the development method applies a development field voltage between a development station donor member and a development station transport member as a function of a humidity measurement associated with the developer material, the humidity measurement providing a surrogate tribo measurement of the developer material.
    Type: Application
    Filed: July 27, 2010
    Publication date: February 2, 2012
    Applicant: XEROX CORPORATION
    Inventors: W. Bradford Willard, Kimberly Anne Stoll, David R. Stookey, Paul L. Jacobs, Robert W. Phelps, Jyothsna Ram
  • Patent number: 7807015
    Abstract: An adhesion promoter comprising a silane compound and at least one of (1) a release agent, or (2) an adhesive, and methods of applying the adhesion promoter.
    Type: Grant
    Filed: September 18, 2006
    Date of Patent: October 5, 2010
    Assignee: Xerox Corporation
    Inventors: Jyothsna Ram, David P. Van Bortel, Guiqin Song, Nan-Xing Hu, T. Brian McAneney, Gordon Sisler, Stephan V. Drappel
  • Patent number: 7424262
    Abstract: A cleaning agent having one or more active ingredient which may remove residual release agents from printed material and methods for using the cleaning agents are described herein.
    Type: Grant
    Filed: September 29, 2006
    Date of Patent: September 9, 2008
    Assignee: Xerox Corporation
    Inventors: David P. Van Bortel, Jyothsna Ram, Alan Richard Kuntz
  • Publication number: 20080080913
    Abstract: A cleaning agent having one or more active ingredient which may remove residual release agents from printed material and methods for using the cleaning agents are described herein.
    Type: Application
    Filed: September 29, 2006
    Publication date: April 3, 2008
    Inventors: David P. Van Bortel, Jyothsna Ram, Alan Richard Kuntz
  • Publication number: 20080071043
    Abstract: An adhesion promoter comprising a silane compound and at least one of (1) a release agent, or (2) an adhesive, and methods of applying the adhesion promoter.
    Type: Application
    Filed: September 18, 2006
    Publication date: March 20, 2008
    Applicant: Xerox Corporation
    Inventors: Jyothsna RAM, David P. VAN BORTEL, Guiqin SONG, Nan-Xing HU, T. Brian MCANENEY, Gordon SISLER, Stephan V. DRAPPEL
  • Patent number: 6838013
    Abstract: Substantially transparent electrodes are formed on a substrate by a process including forming on the substrate, in order, a bottom high index layer, a metallic conductive layer, and a top high index layer with a conductivity of at least about 400 ?/square; and chemically etching the bottom high index layer, the top high index layer and the conductive layer to form discrete electrodes in the metallic conductive layer.
    Type: Grant
    Filed: June 12, 2002
    Date of Patent: January 4, 2005
    Assignee: 3M Innovative Properties Company
    Inventors: Nancy S. Lennhoff, Jyothsna Ram
  • Patent number: 6689544
    Abstract: An ablatable laminar imaging medium useful in the manufacture of a substantially transparent electrode assembly is disclosed. The laminar imaging medium comprises a substrate, a high-index metal oxide layer, an ablatable metallic conductive layer, a high-index conductive metal oxide layer, and an ablation enhancement layer. The ablation enhancement layer has an IR-absorption greater than the IR-absorption of said high-index conductive metal oxide layer and an IR-reflectivity less than the IR-reflectivity of said high-index conductive metal oxide layer. Presence in the laminar imaging medium of the ablation enhancement layer lowers the exposure threshold of the medium and improves ablation accuracy, both—when occasioned in the manufacture of LCD electrode patterns—resulting collectively and ultimately in a more reliably formed electrical architecture, less susceptible to unwanted “shorting”.
    Type: Grant
    Filed: June 13, 2002
    Date of Patent: February 10, 2004
    Assignee: 3M Innovative Properties Company
    Inventors: Pradnya V. Nagarkar, James T. Richard, Linda S. Heath, Radha Sen, Jyothsna Ram
  • Patent number: 6652981
    Abstract: Substantially transparent electrodes are formed on a substrate by a process including forming on the substrate, in order, a bottom high index layer, a metallic conductive layer, and a top high index layer with a conductivity of at least about 400 &OHgr;/square; and chemically etching the bottom high index layer, the top high index layer and the conductive layer to form discrete electrodes in the metallic conductive layer.
    Type: Grant
    Filed: May 12, 2000
    Date of Patent: November 25, 2003
    Assignee: 3M Innovative Properties Company
    Inventors: Nancy S. Lennhoff, Jyothsna Ram
  • Publication number: 20030129424
    Abstract: Substantially transparent electrodes are formed on a substrate by a process including forming on the substrate, in order, a bottom high index layer, a metallic conductive layer, and a top high index layer with a conductivity of at least about 400 &OHgr;/square; and chemically etching the bottom high index layer, the top high index layer and the conductive layer to form discrete electrodes in the metallic conductive layer.
    Type: Application
    Filed: May 12, 2000
    Publication date: July 10, 2003
    Inventors: Nancy S. Lennhoff, Jyothsna Ram
  • Publication number: 20020195435
    Abstract: An ablatable laminar imaging medium useful in the manufacture of a substantially transparent electrode assembly is disclosed. The laminar imaging medium comprises a substrate, a high-index metal oxide layer, an ablatable metallic conductive layer, a high-index conductive metal oxide layer, and an ablation enhancement layer. The ablation enhancement layer has an IR-absorption greater than the IR-absorption of said high-index conductive metal oxide layer and an IR-reflectivity less than the IR-reflectivity of said high-index conductive metal oxide layer. Presence in the laminar imaging medium of the ablation enhancement layer lowers the exposure threshold of the medium and improves ablation accuracy, both—when occasioned in the manufacture of LCD electrode patterns—resulting collectively and ultimately in a more reliably formed electrical architecture, less susceptible to unwanted “shorting”.
    Type: Application
    Filed: June 13, 2002
    Publication date: December 26, 2002
    Inventors: Pradnya V. Nagarkar, James T. Richard, Linda S. Heath, Radha Sen, Jyothsna Ram
  • Publication number: 20020182386
    Abstract: Substantially transparent electrodes are formed on a substrate by a process including forming on the substrate, in order, a bottom high index layer, a metallic conductive layer, and a top high index layer with a conductivity of at least about 400 &OHgr;/square; and chemically etching the bottom high index layer, the top high index layer and the conductive layer to form discrete electrodes in the metallic conductive layer.
    Type: Application
    Filed: June 12, 2002
    Publication date: December 5, 2002
    Inventors: Nancy S. Lennhoff, Jyothsna Ram
  • Patent number: 6485839
    Abstract: An ablatable laminar imaging medium useful in the manufacture of a substantially transparent electrode assembly is disclosed. The laminar imaging medium comprises a substrate, a high-index metal oxide layer, an ablatable metallic conductive layer, a high-index conductive metal oxide layer, and an ablation enhancement layer. The ablation enhancement layer has an IR-absorption greater than the IR-absorption of said high-index conductive metal oxide layer and an IR-reflectivity less than the IR-reflectivity of said high-index conductive metal oxide layer. Presence in the laminar imaging medium of the ablation enhancement layer lowers the exposure threshold of the medium and improves ablation accuracy, both—when occasioned in the manufacture of LCD electrode patterns—resulting collectively and ultimately in a more reliably formed electrical architecture, less susceptible to unwanted “shorting”.
    Type: Grant
    Filed: May 12, 2000
    Date of Patent: November 26, 2002
    Assignee: 3M Innovative Properties Company
    Inventors: Pradnya V. Nagarkar, James T. Richard, Linda S. Heath, Carl A. Chiulli, Radha Sen, Jyothsna Ram, David W. McCarthy