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).
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Patent number: 9573784Abstract: 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: GrantFiled: December 16, 2013Date of Patent: February 21, 2017Assignee: EASTMAN KODAK COMPANYInventors: Michael Joseph Piatt, Harsha S. Bulathsinghalage, John Leonard Hryhorenko
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Publication number: 20150166290Abstract: 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: ApplicationFiled: December 16, 2013Publication date: June 18, 2015Inventors: Michael Joseph Piatt, Harsha S. Bulathsinghalage, John Leonard Hryhorenko
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Patent number: 8944431Abstract: 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: GrantFiled: July 22, 2013Date of Patent: February 3, 2015Assignee: Eastman Kodak CompanyInventors: Michael Joseph Piatt, Harsha S. Bulathsinghalage
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Patent number: 8939545Abstract: 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: GrantFiled: December 20, 2012Date of Patent: January 27, 2015Assignee: Eastman Kodak CompanyInventors: David F. Tunmore, Timothy John Hawryschuk, Michael Joseph Piatt, Harsha S. Bulathsinghalage, Randy Dae Vandagriff
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Publication number: 20150021849Abstract: 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: ApplicationFiled: July 22, 2013Publication date: January 22, 2015Inventors: Michael Joseph Piatt, Harsha S. Bulathsinghalage
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Patent number: 8876277Abstract: 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: GrantFiled: May 30, 2012Date of Patent: November 4, 2014Assignee: Eastman Kodak CompanyInventors: Randy D. Vandagriff, Michael J. Piatt, Harsha S. Bulathsinghalage, W. Charles Kasiske, Jr.
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Patent number: 8870365Abstract: 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: GrantFiled: May 30, 2012Date of Patent: October 28, 2014Assignee: Eastman Kodak CompanyInventors: Randy D. Vandagriff, Michael J. Piatt, Harsha S. Bulathsinghalage, W. Charles Kasiske, Jr.
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Patent number: 8857813Abstract: 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: GrantFiled: July 26, 2013Date of Patent: October 14, 2014Assignee: Eastman Kodak CompanyInventors: Michael Joseph Piatt, Harsha S. Bulathsinghalage
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Patent number: 8845074Abstract: 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: GrantFiled: December 20, 2012Date of Patent: September 30, 2014Assignee: Eastman Kodak CompanyInventors: Timothy Hawryschuk, Michael Platt, Harsha S. Bulathsinghalage, Randy Dae Vandagriff
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Patent number: 8845073Abstract: 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: GrantFiled: December 20, 2012Date of Patent: September 30, 2014Assignee: Eastman Kodak CompanyInventors: Timothy John Hawryschuk, Michael Joseph Piatt, Harsha S. Bulathsinghalage, Randy Dae Vandagriff
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Patent number: 8845072Abstract: 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: GrantFiled: December 20, 2012Date of Patent: September 30, 2014Assignee: Eastman Kodak CompanyInventors: Timothy John Hawryschuk, Michael Joseph Piatt, Harsha S. Bulathsinghalage, Randy Dae Vandagriff
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Patent number: 8833900Abstract: 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: GrantFiled: December 20, 2012Date of Patent: September 16, 2014Assignee: Eastman Kodak CompanyInventors: David F. Tunmore, Timothy John Hawryschuk, Michael Joseph Piatt, Harsha S. Bulathsinghalage, Randy Dae Vandagriff
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Patent number: 8820916Abstract: 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: GrantFiled: December 20, 2012Date of Patent: September 2, 2014Assignee: Eastman Kodak CompanyInventors: Michael Joseph Piatt, David F. Tunmore, Timothy John Hawryschuk, Harsha S. Bulathsinghalage
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Publication number: 20140176637Abstract: 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: ApplicationFiled: December 20, 2012Publication date: June 26, 2014Inventors: Michael Joseph Piatt, David F. Tunmore, Timothy John Hawryschuk, Harsha S. Bulathsinghalage
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Publication number: 20140176638Abstract: 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: ApplicationFiled: December 20, 2012Publication date: June 26, 2014Inventors: David F. Tunmore, Timothy John Hawryschuk, Michael Joseph Piatt, Harsha S. Bulathsinghalage, Randy Dae Vandagriff
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Publication number: 20140176639Abstract: 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: ApplicationFiled: December 20, 2012Publication date: June 26, 2014Inventors: David F. Tunmore, Timothy John Hawryschuk, Michael Joseph Piatt, Harsha S. Bulathsinghalage, Randy Dae Vandagriff
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Publication number: 20140176634Abstract: 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: ApplicationFiled: December 20, 2012Publication date: June 26, 2014Inventors: Donald Saul Rimai, Timothy John Hawryschuk, Michael Joseph Piatt, David F. Tunmore, Harsha S. Bulathsinghalage, Randy Dae Vandagriff
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Publication number: 20140176640Abstract: 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: ApplicationFiled: December 20, 2012Publication date: June 26, 2014Inventors: Timothy J. Hawryschuk, Michael Joseph Piatt, Harsha S. Bulathsinghalage, Randy Dae Vandagriff
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Publication number: 20140176654Abstract: 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: ApplicationFiled: December 20, 2012Publication date: June 26, 2014Inventors: Timothy John Hawryschuk, Michael Joseph Piatt, Harsha S. Bulathsinghalage, Randy Dae Vandagriff
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Publication number: 20140176641Abstract: 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: ApplicationFiled: December 20, 2012Publication date: June 26, 2014Inventors: Timothy John Hawryschuk, Michael Joseph Piatt, Harsha S. Bulathsinghalage, Randy Dae Vandagriff