Patents by Inventor Harsha S. Bulathsinghalage

Harsha S. Bulathsinghalage 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: 9573784
    Abstract: A print media moving apparatus includes a web guide positioned immediately upstream relative to a roller. The web guide has an arcuate surface including three sections with the second section located between the first and third sections. The arcuate surface includes a peak in the second section. The roller, having a diameter and rotational axis, includes three sections with the second section located between the first and third section as viewed along the rotational axis. The diameter of the roller in the first and third sections is greater than in the second section. The three sections of the web guide correspond to the three sections of the roller such that the contour of the arcuate surface causes the print media, after leaving the web guide, to contact the first and third sections of the roller prior to contacting the second section of the roller.
    Type: Grant
    Filed: December 16, 2013
    Date of Patent: February 21, 2017
    Assignee: EASTMAN KODAK COMPANY
    Inventors: Michael Joseph Piatt, Harsha S. Bulathsinghalage, John Leonard Hryhorenko
  • Publication number: 20150166290
    Abstract: A print media moving apparatus includes a web guide positioned immediately upstream relative to a roller. The web guide has an arcuate surface including three sections with the second section located between the first and third sections. The arcuate surface includes a peak in the second section. The roller, having a diameter and rotational axis, includes three sections with the second section located between the first and third section as viewed along the rotational axis. The diameter of the roller in the first and third sections is greater than in the second section. The three sections of the web guide correspond to the three sections of the roller such that the contour of the arcuate surface causes the print media, after leaving the web guide, to contact the first and third sections of the roller prior to contacting the second section of the roller.
    Type: Application
    Filed: December 16, 2013
    Publication date: June 18, 2015
    Inventors: Michael Joseph Piatt, Harsha S. Bulathsinghalage, John Leonard Hryhorenko
  • Patent number: 8944431
    Abstract: A media inverting system is described for a cut sheet printing system. A first media transport advances a media sheet in a first direction, the media sheet having a first side that contacts the first media transport and an opposing second side. A rotatable member having a rotation axis that is substantially parallel to the first direction receives the media sheet from the first media transport and rotates to advance the media sheet around the rotatable member. A rotatable member force mechanism is switchable between a first state where the second side of the media sheet is held to the rotatable member, and a second state where the media sheet is released. A second media transport receives the media sheet from the rotatable member and advances the media sheet in an inverted orientation in a second direction that is substantially parallel to the first direction.
    Type: Grant
    Filed: July 22, 2013
    Date of Patent: February 3, 2015
    Assignee: Eastman Kodak Company
    Inventors: Michael Joseph Piatt, Harsha S. Bulathsinghalage
  • Patent number: 8939545
    Abstract: Inkjet printing methods are provided that deflect and guide a condensation reducing airflow between a printing module and a receiver without disrupting inkjet drop placements.
    Type: Grant
    Filed: December 20, 2012
    Date of Patent: January 27, 2015
    Assignee: Eastman Kodak Company
    Inventors: David F. Tunmore, Timothy John Hawryschuk, Michael Joseph Piatt, Harsha S. Bulathsinghalage, Randy Dae Vandagriff
  • Publication number: 20150021849
    Abstract: A media inverting system is described for a cut sheet printing system. A first media transport advances a media sheet in a first direction, the media sheet having a first side that contacts the first media transport and an opposing second side. A rotatable member having a rotation axis that is substantially parallel to the first direction receives the media sheet from the first media transport and rotates to advance the media sheet around the rotatable member. A rotatable member force mechanism is switchable between a first state where the second side of the media sheet is held to the rotatable member, and a second state where the media sheet is released. A second media transport receives the media sheet from the rotatable member and advances the media sheet in an inverted orientation in a second direction that is substantially parallel to the first direction.
    Type: Application
    Filed: July 22, 2013
    Publication date: January 22, 2015
    Inventors: Michael Joseph Piatt, Harsha S. Bulathsinghalage
  • Patent number: 8876277
    Abstract: A printing system includes one or more lineheads disposed opposite a first side of a print media and at least one vacuum assembly having a vacuum manifold disposed opposite a second side of the print media. The linehead or lineheads has one or more print zones where a liquid or ink is deposited onto the first side of the print media. The vacuum manifold is aligned with a non-print zone of each linehead and outputs a vacuum force proximate to the second side of the print media such that at least a portion of the second side of the print media is deflected away from the lineheads. The printing system can also include another component, such as a dryer, disposed over the print media and laterally adjacent to the linehead. Another vacuum manifold can be disposed adjacent to the second side print media between the linehead and the component.
    Type: Grant
    Filed: May 30, 2012
    Date of Patent: November 4, 2014
    Assignee: Eastman Kodak Company
    Inventors: Randy D. Vandagriff, Michael J. Piatt, Harsha S. Bulathsinghalage, W. Charles Kasiske, Jr.
  • Patent number: 8870365
    Abstract: A printing system includes one or more lineheads disposed opposite a first side of a print media and at least one vacuum assembly having a vacuum manifold disposed opposite a second side of the print media. The linehead or lineheads has one or more print zones where a liquid or ink is deposited onto the first side of the print media. The vacuum manifold is aligned with a non-print zone of each linehead and outputs a vacuum force proximate to the second side of the print media such that at least a portion of the second side of the print media is deflected away from the lineheads. The printing system can also include another component, such as a dryer, disposed over the print media and laterally adjacent to the linehead. Another vacuum manifold can be disposed adjacent to the second side print media between the linehead and the component.
    Type: Grant
    Filed: May 30, 2012
    Date of Patent: October 28, 2014
    Assignee: Eastman Kodak Company
    Inventors: Randy D. Vandagriff, Michael J. Piatt, Harsha S. Bulathsinghalage, W. Charles Kasiske, Jr.
  • Patent number: 8857813
    Abstract: A media inverting system for inverting a media sheet, including a first media transport, a rotatable member, and a second media transport. A rotatable member force mechanism is switchable between a first state where a first side of the media sheet is held to the rotatable member and a second state where the media sheet is released. A control system controls the rotatable member force mechanism according to a control sequence including: switching the rotatable member force mechanism to its first state to receive the media sheet from the first media transport and hold the media sheet to the rotatable member while it is wrapped around the rotatable member; and switching the rotatable member force mechanism to its second state to release the media sheet in synchronization with the media sheet being received by the second media transport.
    Type: Grant
    Filed: July 26, 2013
    Date of Patent: October 14, 2014
    Assignee: Eastman Kodak Company
    Inventors: Michael Joseph Piatt, Harsha S. Bulathsinghalage
  • Patent number: 8845074
    Abstract: Inkjet printing systems are provided that use a combination of higher resistance flow areas and lower resistance flow areas to allow a vaporized carrier reducing airflow to flow between a printing module and a receiver without disrupting inkjet drop placements. Removal of the vaporized carrier fluid reduces condensation.
    Type: Grant
    Filed: December 20, 2012
    Date of Patent: September 30, 2014
    Assignee: Eastman Kodak Company
    Inventors: Timothy Hawryschuk, Michael Platt, Harsha S. Bulathsinghalage, Randy Dae Vandagriff
  • Patent number: 8845073
    Abstract: Inkjet printing methods are described that create a combination of higher resistance flow areas and lower resistance flow areas to allow a vaporized carrier fluid reducing airflow to flow between a printing module and a receiver without disrupting inkjet drop placements. Removal of the vaporized carrier fluid reduces condensation.
    Type: Grant
    Filed: December 20, 2012
    Date of Patent: September 30, 2014
    Assignee: Eastman Kodak Company
    Inventors: Timothy John Hawryschuk, Michael Joseph Piatt, Harsha S. Bulathsinghalage, Randy Dae Vandagriff
  • Patent number: 8845072
    Abstract: Condensation control systems are provided for use with inkjet printing systems that use a combination of higher resistance flow areas and lower resistance flow areas to allow a vaporized carrier fluid reducing airflow to flow between a printing module and a receiver during printing without creating observable artifacts in a print. Removal of the vaporized carrier fluid reduces condensation.
    Type: Grant
    Filed: December 20, 2012
    Date of Patent: September 30, 2014
    Assignee: Eastman Kodak Company
    Inventors: Timothy John Hawryschuk, Michael Joseph Piatt, Harsha S. Bulathsinghalage, Randy Dae Vandagriff
  • Patent number: 8833900
    Abstract: Inkjet printing systems are described that have deflection surfaces to guide a condensation reducing airflow between a printing module and a receiver without disrupting inkjet drop placements.
    Type: Grant
    Filed: December 20, 2012
    Date of Patent: September 16, 2014
    Assignee: Eastman Kodak Company
    Inventors: David F. Tunmore, Timothy John Hawryschuk, Michael Joseph Piatt, Harsha S. Bulathsinghalage, Randy Dae Vandagriff
  • Patent number: 8820916
    Abstract: Methods for operating an inkjet printing system are provided. In one method, a cross-module airflow is used to limit concentrations of an evaporated inkjet carrier fluid between barrier that is between inkjet printheads of a printing module and a receiver. In the method, inkjet droplets are printed along a first print line and a second print line as the receiver is moved past the first print line and as the receiver is moved past the second print line. A co-linear airflow that flows along with ink droplets to the receiver is also supplied. Between the first print line and the second print line the receiver is moved to create an integration area in which the cross-module airflow and co-linear airflow can integrate and flow from between the printing module and the receiver without disrupting the travel of ink droplets.
    Type: Grant
    Filed: December 20, 2012
    Date of Patent: September 2, 2014
    Assignee: Eastman Kodak Company
    Inventors: Michael Joseph Piatt, David F. Tunmore, Timothy John Hawryschuk, Harsha S. Bulathsinghalage
  • Publication number: 20140176637
    Abstract: Methods for operating an inkjet printing system are provided. In one method, a cross-module airflow is used to limit concentrations of an evaporated inkjet carrier fluid between barrier that is between inkjet printheads of a printing module and a receiver. In the method, inkjet droplets are printed along a first print line and a second print line as the receiver is moved past the first print line and as the receiver is moved past the second print line. A co-linear airflow that flows along with ink droplets to the receiver is also supplied. Between the first print line and the second print line the receiver is moved to create an integration area in which the cross-module airflow and co-linear airflow can integrate and flow from between the printing module and the receiver without disrupting the travel of ink droplets.
    Type: Application
    Filed: December 20, 2012
    Publication date: June 26, 2014
    Inventors: Michael Joseph Piatt, David F. Tunmore, Timothy John Hawryschuk, Harsha S. Bulathsinghalage
  • Publication number: 20140176638
    Abstract: Inkjet printing systems are described that have deflection surfaces to guide a condensation reducing airflow between a printing module and a receiver without disrupting inkjet drop placements.
    Type: Application
    Filed: December 20, 2012
    Publication date: June 26, 2014
    Inventors: David F. Tunmore, Timothy John Hawryschuk, Michael Joseph Piatt, Harsha S. Bulathsinghalage, Randy Dae Vandagriff
  • Publication number: 20140176639
    Abstract: Inkjet printing methods are provided that deflect and guide a condensation reducing airflow between a printing module and a receiver without disrupting inkjet drop placements.
    Type: Application
    Filed: December 20, 2012
    Publication date: June 26, 2014
    Inventors: David F. Tunmore, Timothy John Hawryschuk, Michael Joseph Piatt, Harsha S. Bulathsinghalage, Randy Dae Vandagriff
  • Publication number: 20140176634
    Abstract: Condensation control systems are provided for use with inkjet printing systems that use a combination of higher resistance flow areas and lower resistance flow areas to allow a vaporized carrier fluid reducing airflow to flow between a printing module and a receiver during printing without creating observable artifacts in a print. Removal of the vaporized carrier fluid reduces condensation.
    Type: Application
    Filed: December 20, 2012
    Publication date: June 26, 2014
    Inventors: Donald Saul Rimai, Timothy John Hawryschuk, Michael Joseph Piatt, David F. Tunmore, Harsha S. Bulathsinghalage, Randy Dae Vandagriff
  • Publication number: 20140176640
    Abstract: Inkjet printing methods are described that create a combination of higher resistance flow areas and lower resistance flow areas to allow a vaporized carrier fluid reducing airflow to flow between a printing module and a receiver without disrupting inkjet drop placements. Removal of the vaporized carrier fluid reduces condensation.
    Type: Application
    Filed: December 20, 2012
    Publication date: June 26, 2014
    Inventors: Timothy J. Hawryschuk, Michael Joseph Piatt, Harsha S. Bulathsinghalage, Randy Dae Vandagriff
  • Publication number: 20140176654
    Abstract: Inkjet printing systems are provided that use a combination of higher resistance flow areas and lower resistance flow areas to allow a vaporized carrier reducing airflow to flow between a printing module and a receiver without disrupting inkjet drop placements. Removal of the vaporized carrier fluid reduces condensation.
    Type: Application
    Filed: December 20, 2012
    Publication date: June 26, 2014
    Inventors: Timothy John Hawryschuk, Michael Joseph Piatt, Harsha S. Bulathsinghalage, Randy Dae Vandagriff
  • Publication number: 20140176641
    Abstract: Condensation control systems are provided for use with inkjet printing systems that use a combination of higher resistance flow areas and lower resistance flow areas to allow a vaporized carrier fluid reducing airflow to flow between a printing module and a receiver during printing without creating observable artifacts in a print. Removal of the vaporized carrier fluid reduces condensation.
    Type: Application
    Filed: December 20, 2012
    Publication date: June 26, 2014
    Inventors: Timothy John Hawryschuk, Michael Joseph Piatt, Harsha S. Bulathsinghalage, Randy Dae Vandagriff