Patents by Inventor Michael Fredrick Leo
Michael Fredrick Leo 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: 8591016Abstract: A method for delivering molten ink to a printing mechanism alternates between a first and second reservoir receiving molten ink from a receiving ink reservoir while providing ink from the other of the first and second reservoirs to a printing mechanism. The alternation of the two reservoirs is achieved with coordinated operation of two actuators operatively connected to two seal members.Type: GrantFiled: August 27, 2012Date of Patent: November 26, 2013Assignee: Xerox CorporationInventors: Roger Gaylord Leighton, Michael Fredrick Leo, Nathan Eymard Smith, David Peter Lomenzo, Vincent M. Williams, Patrick James Walker
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Patent number: 8449093Abstract: A solid phase change ink melter assembly in a phase change ink image producing machine includes an array of a plurality of spaced apart fins, the array defining a top face for receiving the solid pieces of phase change ink, a bottom face for discharging melted ink, and opposite melter surfaces for melting the solid pieces in contact therewith. The assembly further including a number of heat transfer devices extending through and in heat transfer contact with the plurality of fins, the heat transfer devices including a heating element for heating the device. The bottom edge of the fins defines a plurality of apexes which serve as drip points for molten phase change ink.Type: GrantFiled: June 5, 2012Date of Patent: May 28, 2013Assignee: Xerox CorporationInventors: Nathan Eymard Smith, Roger Leighton, Michael Fredrick Leo, Robert Tuchrelo, Patrick James Walker, David Peter Lomenzo
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Patent number: 8403470Abstract: A solid phase change ink melter assembly in a phase change ink image producing machine includes an array of a plurality of spaced apart fins, the array defining a top face for receiving the solid pieces of phase change ink, a bottom face for discharging melted ink, and opposite melter surfaces for melting the solid pieces in contact therewith. The assembly further includes a number of heat transfer devices extending through and in heat transfer contact with the plurality of fins, the heat transfer devices including a heating element for heating the device. The bottom edge of the fins defines a plurality of apexes which serve as drip points for molten phase change ink.Type: GrantFiled: June 5, 2012Date of Patent: March 26, 2013Assignee: Xerox CorporationInventors: Nathan Eymard Smith, Roger Leighton, Michael Fredrick Leo, Robert Tuchrelo, Patrick James Walker, David Peter Lomenzo
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Patent number: 8348405Abstract: A molten ink supply for a solid ink printing machine includes a container for storing solid ink pellets and a withdrawal tube having an inlet end disposed within the container. A vacuum generator is disposed at the outlet end of the withdrawal tube operable to draw a vacuum within the tube. A feed conduit is connected to the outlet end for receiving solid ink pellets drawn therein by said vacuum generator and conveying the pellets to a melting station operable to melt the solid ink pellets. An assist tube is provided within the container with a discharge nozzle disposed within the withdrawal tube at the inlet end and operable to provide a flow of air into the withdrawal tube to agitate solid ink pellets and facilitate withdrawal of the pellets by the vacuum generator.Type: GrantFiled: September 2, 2010Date of Patent: January 8, 2013Assignee: Xerox CorporationInventors: Nathan Eymard Smith, Michael Fredrick Leo, Patrick James Walker, Robert R. Tuchrelo
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Publication number: 20120320134Abstract: A method for delivering molten ink to a printing mechanism alternates between a first and second reservoir receiving molten ink from a receiving ink reservoir while providing ink from the other of the first and second reservoirs to a printing mechanism. The alternation of the two reservoirs is achieved with coordinated operation of two actuators operatively connected to two seal members.Type: ApplicationFiled: August 27, 2012Publication date: December 20, 2012Applicant: XEROX CORPORATIONInventors: Roger Leighton, Michael Fredrick Leo, Nathan Eymard Smith, David Peter Lomenzo, Vincent M. Williams, Patrick James Walker
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Patent number: 8303098Abstract: A system and method is provide for delivering molten ink to a printing mechanism including receiving molten ink in a receiving reservoir, and alternating which of a plurality of reservoirs is opened to the receiving reservoir to receive molten ink while at least one other of the plurality of reservoirs is opened to dispense molten ink to the printing mechanism, in response to the level of ink in a reservoir dispensing molten ink to the printing mechanism.Type: GrantFiled: May 7, 2010Date of Patent: November 6, 2012Assignee: Xerox CorporationInventors: Roger Gaylord Leighton, Michael Fredrick Leo, Nathan Eymard Smith, David Peter Lomenzo, Vincent M. Williams, Patrick James Walker
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Publication number: 20120242764Abstract: A solid phase change ink melter assembly in a phase change ink image producing machine comprises an array of a plurality of spaced apart fins, the array defining a top face for receiving the solid pieces of phase change ink, a bottom face for discharging melted ink, and opposite melter surfaces for melting the solid pieces in contact therewith. The assembly further comprises a number of heat transfer devices extending through and in heat transfer contact with the plurality of fins, the heat transfer devices including a heating element for heating the device. The bottom edge of the fins defines a plurality of apexes which serve as drip points for molten phase change ink.Type: ApplicationFiled: June 5, 2012Publication date: September 27, 2012Applicant: XEROX CORPORATIONInventors: Nathan Eymard Smith, Roger Leighton, Michael Fredrick Leo, Robert Tuchrelo, Patrick James Walker, David Peter Lomenzo
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Publication number: 20120236093Abstract: A solid phase change ink melter assembly in a phase change ink image producing machine comprises an array of a plurality of spaced apart fins, the array defining a top face for receiving the solid pieces of phase change ink, a bottom face for discharging melted ink, and opposite melter surfaces for melting the solid pieces in contact therewith. The assembly further comprises a number of heat transfer devices extending through and in heat transfer contact with the plurality of fins, the heat transfer devices including a heating element for heating the device. The bottom edge of the fins defines a plurality of apexes which serve as drip points for molten phase change ink.Type: ApplicationFiled: June 5, 2012Publication date: September 20, 2012Applicant: XEROX CORPORATIONInventors: Nathan Eymard Smith, Roger Leighton, Michael Fredrick Leo, Robert Tuchrelo, Patrick James Walker, David Peter Lomenzo
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Patent number: 8240829Abstract: A solid phase change ink melter assembly in a phase change ink image producing machine having an array of a plurality of spaced apart fins, the array defining a top face for receiving the solid pieces of phase change ink, a bottom face for discharging melted ink, and opposite melter surfaces for melting the solid pieces in contact therewith. The assembly further includes a number of heat transfer devices extending through and in heat transfer contact with the plurality of fins, the heat transfer devices including a heating element for heating the device. The bottom edge of the fins defines a plurality of apexes which serve as drip points for molten phase change ink.Type: GrantFiled: December 15, 2009Date of Patent: August 14, 2012Assignee: Xerox CorporationInventors: Nathan Eymard Smith, Roger Leighton, Michael Fredrick Leo, Robert Tuchrelo, Patrick James Walker, David Peter Lomenzo
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Publication number: 20120056959Abstract: A molten ink supply for a solid ink printing machine includes a container for storing solid ink pellets and a withdrawal tube having an inlet end disposed within the container. A vacuum generator is disposed at the outlet end of the withdrawal tube operable to draw a vacuum within the tube. A feed conduit is connected to the outlet end for receiving solid ink pellets drawn therein by said vacuum generator and conveying the pellets to a melting station operable to melt the solid ink pellets. An assist tube is provided within the container with a discharge nozzle disposed within the withdrawal tube at the inlet end and operable to provide a flow of air into the withdrawal tube to agitate solid ink pellets and facilitate withdrawal of the pellets by the vacuum generator.Type: ApplicationFiled: September 2, 2010Publication date: March 8, 2012Applicant: XEROX CORPORATIONInventors: Nathan Eymard Smith, Michael Fredrick Leo, Robert Tuchrelo, Patrick James Walker
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Publication number: 20110273521Abstract: A system and method is provide for delivering molten ink to a printing mechanism including receiving molten ink in a receiving reservoir, and alternating which of a plurality of reservoirs is opened to the receiving reservoir to receive molten ink while at least one other of the plurality of reservoirs is opened to dispense molten ink to the printing mechanism, in response to the level of ink in a reservoir dispensing molten ink to the printing mechanism.Type: ApplicationFiled: May 7, 2010Publication date: November 10, 2011Applicant: XEROX CORPORATIONInventors: Roger Leighton, Michael Fredrick Leo, Nathan Eymard Smith, David Peter Lomenzo, Vincent M. Williams, Patrick James Walker
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Publication number: 20110141212Abstract: A solid phase change ink melter assembly in a phase change ink image producing machine comprises an array of a plurality of spaced apart fins, the array defining a top face for receiving the solid pieces of phase change ink, a bottom face for discharging melted ink, and opposite melter surfaces for melting the solid pieces in contact therewith. The assembly further comprises a number of heat transfer devices extending through and in heat transfer contact with the plurality of fins, the heat transfer devices including a heating element for heating the device. The bottom edge of the fins defines a plurality of apexes which serve as drip points for molten phase change ink.Type: ApplicationFiled: December 15, 2009Publication date: June 16, 2011Applicant: XEROX CORPORATIONInventors: Nathan Eymard Smith, Roger Leighton, Michael Fredrick Leo, Robert Tuchrelo, Patrick James Walker, David Peter Lomenzo