Patents by Inventor Lars E. Swartz
Lars E. Swartz 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: 9004669Abstract: Methods of leveling ink on substrates and apparatuses useful in printing are provided. An exemplary embodiment of the methods includes irradiating ink disposed on a surface of a porous substrate with radiation emitted by at least one radiant energy source. The radiation heats the ink to at least a viscosity threshold temperature of the ink to allow the ink to flow laterally on the surface to produce leveling of the ink. The ink is heated sufficiently rapidly that heat transfer from the ink to the substrate is sufficiently small during the leveling that ink at the substrate interface is cooled to a temperature below the viscosity threshold temperature thereby preventing any significant ink permeation into the substrate.Type: GrantFiled: September 26, 2013Date of Patent: April 14, 2015Assignees: Xerox Corporation, Palo Alto Research Center IncorporatedInventors: Gregory J. Kovacs, Steven E. Ready, David K. Biegelsen, Lars E. Swartz, Christopher Paulson
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Publication number: 20140020624Abstract: Methods of leveling ink on substrates and apparatuses useful in printing are provided. An exemplary embodiment of the methods includes irradiating ink disposed on a surface of a porous substrate with radiation emitted by at least one radiant energy source. The radiation heats the ink to at least a viscosity threshold temperature of the ink to allow the ink to flow laterally on the surface to produce leveling of the ink. The ink is heated sufficiently rapidly that heat transfer from the ink to the substrate is sufficiently small during the leveling that ink at the substrate interface is cooled to a temperature below the viscosity threshold temperature thereby preventing any significant ink permeation into the substrate.Type: ApplicationFiled: September 26, 2013Publication date: January 23, 2014Applicants: PALO ALTO RESEARCH CENTER INCORPORATED, XEROX CORPORATIONInventors: Gregory K. KOVACS, Steven E. READY, David K. BIEGELSEN, Lars E. SWARTZ, Christopher PAULSON
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Patent number: 8617667Abstract: Methods of leveling ink on substrates and apparatuses useful in printing are provided. An exemplary embodiment of the methods includes irradiating ink disposed on a surface of a porous substrate with radiation emitted by at least one radiant energy source. The radiation heats the ink to at least a viscosity threshold temperature of the ink to allow the ink to flow laterally on the surface to produce leveling of the ink. The ink is heated sufficiently rapidly that heat transfer from the ink to the substrate is sufficiently small during the leveling that ink at the substrate interface is cooled to a temperature below the viscosity threshold temperature thereby preventing any significant ink permeation into the substrate.Type: GrantFiled: April 21, 2010Date of Patent: December 31, 2013Assignees: Xerox Corporation, Palo Alto Research Center IncorporatedInventors: Gregory J. Kovacs, Steven E. Ready, David K. Biegelsen, Lars E. Swartz, Christopher Paulson
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Patent number: 8606165Abstract: A system for heated gas fusing of toner on non-porous substrates is provided. The system uses (1) an extended fusing zone held at lower temperatures than needed for a roll nip or radiant fuser, and (2) a very low melt toner which can be fused at greatly reduced temperatures compared to conventional toners. In one form, the system is realized through (a) the use of heated gas as the low temperature extended zone fusing technology, and (b) the use of ultra-low melt (ULM) toner—which requires significantly reduced temperature compared to conventional toner. On non-porous packaging substrates the use of heated gas can limit the substrate temperature to 100° C.Type: GrantFiled: April 30, 2008Date of Patent: December 10, 2013Assignees: Xerox Corporation, Palo Alto Research Center IncorporatedInventors: Gregory J. Kovacs, Ashish Pattekar, David Biegelsen, Lars E. Swartz, Guerino G. Sacripante, T. Brian McAneney, Edward G. Zwartz
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Patent number: 8360423Abstract: A transport system for cut sheet media has a first and second cylinder to form a nip, a support subsystem to transport edges of cut sheets having at least one image into and out of the nip, and an array of contact points on each cylinder to make contact with the cut sheets without marking the image. A wheel for a print medium transport system has an outer rim having a series of contact points, an inner hub supporting a means to accommodate a drive shaft, and an internal spring connecting the outer rim to the inner hub. A method of transporting cut sheets in a printing system forms a nip between at least one pair of cylinders, each cylinder having an array of contact points, guides a first edge of a cut sheet into the nip, and uses the arrays of contact points to transport the cut sheets through one of either a fusing or drying process.Type: GrantFiled: September 15, 2011Date of Patent: January 29, 2013Assignee: Palo Alto Research Center IncorporatedInventors: David K. Biegelsen, David G. Duff, Lars E. Swartz, Ashish V. Pattekar
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Publication number: 20120006655Abstract: A transport system for cut sheet media has a first and second cylinder to form a nip, a support subsystem to transport edges of cut sheets having at least one image into and out of the nip, and an array of contact points on each cylinder to make contact with the cut sheets without marking the image. A wheel for a print medium transport system has an outer rim having a series of contact points, an inner hub supporting a means to accommodate a drive shaft, and an internal spring connecting the outer rim to the inner hub. A method of transporting cut sheets in a printing system forms a nip between at least one pair of cylinders, each cylinder having an array of contact points, guides a first edge of a cut sheet into the nip, and uses the arrays of contact points to transport the cut sheets through one of either a fusing or drying process.Type: ApplicationFiled: September 15, 2011Publication date: January 12, 2012Applicant: PALO ALTO RESEARCH CENTER INCORPORATEDInventors: David K. Biegelsen, David G. Duff, Lars E. Swartz, Ashish V. Pattekar
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Publication number: 20120000386Abstract: A transport system for cut sheet media has a first and second cylinder to form a nip, a support subsystem to transport edges of cut sheets having at least one image into and out of the nip, and an array of contact points on each cylinder to make contact with the cut sheets without marking the image. A wheel for a print medium transport system has an outer rim having a series of contact points, an inner hub supporting a means to accommodate a drive shaft, and an internal spring connecting the outer rim to the inner hub. A method of transporting cut sheets in a printing system forms a nip between at least one pair of cylinders, each cylinder having an array of contact points, guides a first edge of a cut sheet into the nip, and uses the arrays of contact points to transport the cut sheets through one of either a fusing or drying process.Type: ApplicationFiled: September 15, 2011Publication date: January 5, 2012Applicant: PALO ALTO RESEARCH CENTER INCORPORATEDInventors: David K. Biegelsen, David G. Duff, Lars E. Swartz, Ashish V. Pattekar
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Publication number: 20110261127Abstract: Methods of leveling ink on substrates and apparatuses useful in printing are provided. An exemplary embodiment of the methods includes irradiating ink disposed on a surface of a porous substrate with radiation emitted by at least one radiant energy source. The radiation heats the ink to at least a viscosity threshold temperature of the ink to allow the ink to flow laterally on the surface to produce leveling of the ink. The ink is heated sufficiently rapidly that heat transfer from the ink to the substrate is sufficiently small during the leveling that ink at the substrate interface is cooled to a temperature below the viscosity threshold temperature thereby preventing any significant ink permeation into the substrate.Type: ApplicationFiled: April 21, 2010Publication date: October 27, 2011Applicants: Palo Alto Research Center Incorporated, Xerox CorporationInventors: Gregory J. Kovacs, Steven E. Ready, David K. Biegelsen, Lars E. Swartz, Christopher Paulson
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Publication number: 20100183344Abstract: An imaging system including an image transfer structure configured to transfer marking material to a first side of a substrate; a tacker configured to fix the marking material to the substrate; a path controller; a substrate inverter; and a fuser. The path controller is configured to switch the substrate between a first path towards the fuser and a second path extending through the substrate inverter and returning to the image transfer structure.Type: ApplicationFiled: January 16, 2009Publication date: July 22, 2010Applicant: Palo Alto Research Center IncorporatedInventors: DAVID K. BIEGELSEN, LARS E. SWARTZ
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Publication number: 20090274499Abstract: A system for heated gas fusing of toner on non-porous substrates is provided. The system uses (1) an extended fusing zone held at lower temperatures than needed for a roll nip or radiant fuser, and (2) a very low melt toner which can be fused at greatly reduced temperatures compared to conventional toners. In one form, the system is realized through (a) the use of heated gas as the low temperature extended zone fusing technology, and (b) the use of ultra-low melt (ULM) toner—which requires significantly reduced temperature compared to conventional toner. On non-porous packaging substrates the use of heated gas can limit the substrate temperature to 100° C.Type: ApplicationFiled: April 30, 2008Publication date: November 5, 2009Applicants: XEROX CORPORATION, PALO ALTO RESEARCH CENTER INCORPORATEDInventors: Gregory J. Kovacs, Ashish V. Pattekar, David Biegelsen, Lars E. Swartz, Guerino G. Sacripante, T. Brian McAneney, Edward G. Zwartz
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Publication number: 20080150229Abstract: A transport system for cut sheet media has a first and second cylinder to form a nip, a support subsystem to transport edges of cut sheets having at least one image into and out of the nip, and an array of contact points on each cylinder to make contact with the cut sheets without marking the image. A wheel for a print medium transport system has an outer rim having a series of contact points, an inner hub supporting a means to accommodate a drive shaft, and an internal spring connecting the outer rim to the inner hub. A method of transporting cut sheets in a printing system forms a nip between at least one pair of cylinders, each cylinder having an array of contact points, guides a first edge of a cut sheet into the nip, and uses the arrays of contact points to transport the cut sheets through one of either a fusing or drying process.Type: ApplicationFiled: December 21, 2006Publication date: June 26, 2008Applicant: PALO ALTO RESEARCH CENTER INCORPORATEDInventors: David K. Biegelsen, David G. Duff, Lars E. Swartz, Ashish V. Pattekar
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Patent number: 6676106Abstract: A thin laminate film structure comprises a first metallic lamina formed on a surface of a first dielectric lamina and a third lamina formed on a surface of the first metallic lamina opposite the first dielectric lamina. Electrical and mechanical properties of the thin laminate film structure may be determined and/or optimized separately. The first metallic lamina and the first dielectric lamina may comprise aluminized mylar. The third lamina may or may not be made of a dielectric material. The thin laminate film structure may further comprise a second metallic lamina formed on a surface of the third lamina opposite the first metallic lamina and a second dielectric lamina formed on a surface of the second metallic lamina opposite the third lamina. In such a case, the thin laminate film structure allows dual-direction actuation of electrostatically and/or magnetically driven devices, such as microdevice valves, in which the thin laminate film structure may be employed.Type: GrantFiled: December 28, 2000Date of Patent: January 13, 2004Assignee: Xerox CorporationInventors: Lars E. Swartz, David K. Biegelsen
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Publication number: 20020086149Abstract: A thin laminate film structure comprises a first metallic lamina formed on a surface of a first dielectric lamina and a third lamina formed on a surface of the first metallic lamina opposite the first dielectric lamina. Electrical and mechanical properties of the thin laminate film structure may be determined and/or optimized separately. The first metallic lamina and the first dielectric lamina may comprise aluminized mylar. The third lamina may or may not be made of a dielectric material. The thin laminate film structure may further comprise a second metallic lamina formed on a surface of the third lamina opposite the first metallic lamina and a second dielectric lamina formed on a surface of the second metallic lamina opposite the third lamina. In such a case, the thin laminate film structure allows dual-direction actuation of electrostatically and/or magnetically driven devices, such as microdevice valves, in which the thin laminate film structure may be employed.Type: ApplicationFiled: December 28, 2000Publication date: July 4, 2002Inventors: Lars E. Swartz, David K. Biegelsen