Patents by Inventor Duane Peters
Duane Peters 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: 10613450Abstract: The present disclosure relates generally to a method to make a chemically prepared toner that employs a crash cooling process. In particular, the crash cooling process involves the addition of a toner slurry having a temperature between 70° C. and 90° C. to an equivalent amount of cold water having a temperature between 5° C. and 20° C. Polyester and styrene acrylic toners as well as polyester core shell toners having a borax coupling agent between the toner core and toner shell made from this cooling process results in an improvement to the amount of toner waste, thereby achieving a higher toner usage efficiency for an electrophotographic printing system.Type: GrantFiled: April 3, 2019Date of Patent: April 7, 2020Assignee: LEXMARK INTERNATIONAL, INC.Inventors: Kasturi Rangan Srinivasan, Rahel Bekru Bogale, Trent Duane Peter, Brian David Munson
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Patent number: 10591833Abstract: The present disclosure relates generally to a method to make a chemically prepared toner that employs a crash cooling process. In the crash cooling process, an amount of hot toner slurry is added to an external reactor holding an amount of chilled cooling water, wherein the temperature of the chilled cooling water in the external reactor is from about 8° C. to about 25° C. The amount of the chilled cooling water in the external reactor is about 10% to about 40% lower compared to the amount of the added hot toner slurry. Toner prepared using this crash cooling method is cooled at a rate of less than 0.8° C./min. Polyester toners and polyester core shell toners having a borax coupling agent between the toner core and toner shell made from this crash cooling processes using less water results in an improvement to the toner's print density and usage efficiency.Type: GrantFiled: April 16, 2019Date of Patent: March 17, 2020Assignee: LEXMARK INTERNATIONAL, INC.Inventors: Kasturi Rangan Srinivasan, Anna Sara McLeland, Rahel Bekru Bogale, Trent Duane Peter
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Patent number: 10591834Abstract: The present disclosure relates generally to a method to make a chemically prepared toner that employs a crash cooling process. In the crash cooling process, an amount of hot toner slurry is added to an external reactor holding an amount of chilled cooling water, wherein the temperature of the chilled cooling water in the external reactor is from about 8° C. to about 25° C. The amount of the chilled cooling water in the external reactor is about 10% to about 40% lower compared to the amount of the added hot toner slurry. Toner prepared using this crash cooling method is cooled at a rate of less than 0.8° C./min. Polyester toners and polyester core shell toners having a borax coupling agent between the toner core and toner shell made from this crash cooling processes using less water results in an improvement to the toner's print density and usage efficiency.Type: GrantFiled: April 16, 2019Date of Patent: March 17, 2020Assignee: LEXMARK INTERNATIONAL, INC.Inventors: Kasturi Rangan Srinivasan, Anna Sara McLeland, Rahel Bekru Bogale, Trent Duane Peter
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Patent number: 10591835Abstract: The present disclosure relates generally to a method to make a chemically prepared toner that employs a crash cooling process. In the crash cooling process, an amount of hot toner slurry is added to an external reactor holding an amount of chilled cooling water, wherein the temperature of the chilled cooling water in the external reactor is from about 8° C. to about 25° C. The amount of the chilled cooling water in the external reactor is about 10% to about 40% lower compared to the amount of the added hot toner slurry. Toner prepared using this crash cooling method is cooled at a rate of less than 0.8° C./min. Polyester toners and polyester core shell toners having a borax coupling agent between the toner core and toner shell made from this crash cooling processes using less water results in an improvement to the toner's print density and usage efficiency.Type: GrantFiled: April 16, 2019Date of Patent: March 17, 2020Assignee: LEXMARK INTERNATIONAL, INC.Inventors: Kasturi Rangan Srinivasan, Anna Sara McLeland, Rahel Bekru Bogale, Trent Duane Peter
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Patent number: 10474046Abstract: The present disclosure relates generally to a method to make a chemically prepared toner that employs a crash cooling process. In particular, the crash cooling process involves the addition of a toner slurry having a temperature between 70° C. and 90° C. to an equivalent amount of cold water having a temperature between 5° C. and 20° C. Polyester and styrene acrylic toners as well as polyester core shell toners having a borax coupling agent between the toner core and toner shell made from this cooling process results in an improvement to the amount of toner waste, thereby achieving a higher toner usage efficiency for an electrophotographic printing system.Type: GrantFiled: September 21, 2018Date of Patent: November 12, 2019Assignee: LEXMARK INTERNATIONAL, INC.Inventors: Kasturi Rangan Srinivasan, Rahel Bekru Bogale, Trent Duane Peter, Brian David Munson
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Publication number: 20190243265Abstract: The present disclosure relates generally to a method to make a chemically prepared toner that employs a crash cooling process. In the crash cooling process, an amount of hot toner slurry is added to an external reactor holding an amount of chilled cooling water, wherein the temperature of the chilled cooling water in the external reactor is from about 8° C. to about 25° C. The amount of the chilled cooling water in the external reactor is about 10% to about 40% lower compared to the amount of the added hot toner slurry. Toner prepared using this crash cooling method is cooled at a rate of less than 0.8° C./min. Polyester toners and polyester core shell toners having a borax coupling agent between the toner core and toner shell made from this crash cooling processes using less water results in an improvement to the toner's print density and usage efficiency.Type: ApplicationFiled: April 16, 2019Publication date: August 8, 2019Inventors: KASTURI RANGAN SRINIVASAN, ANNA SARA MCLELAND, RAHEL BEKRU BOGALE, TRENT DUANE PETER
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Publication number: 20190243266Abstract: The present disclosure relates generally to a method to make a chemically prepared toner that employs a crash cooling process. In the crash cooling process, an amount of hot toner slurry is added to an external reactor holding an amount of chilled cooling water, wherein the temperature of the chilled cooling water in the external reactor is from about 8° C. to about 25° C. The amount of the chilled cooling water in the external reactor is about 10% to about 40% lower compared to the amount of the added hot toner slurry. Toner prepared using this crash cooling method is cooled at a rate of less than 0.8° C./min. Polyester toners and polyester core shell toners having a borax coupling agent between the toner core and toner shell made from this crash cooling processes using less water results in an improvement to the toner's print density and usage efficiency.Type: ApplicationFiled: April 16, 2019Publication date: August 8, 2019Inventors: Kasturi Rangan Srinivasan, Anna Sara McLeland, Rahel Berku Bogale, Trent Duane Peter
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Publication number: 20190243267Abstract: The present disclosure relates generally to a method to make a chemically prepared toner that employs a crash cooling process. In the crash cooling process, an amount of hot toner slurry is added to an external reactor holding an amount of chilled cooling water, wherein the temperature of the chilled cooling water in the external reactor is from about 8° C. to about 25° C. The amount of the chilled cooling water in the external reactor is about 10% to about 40% lower compared to the amount of the added hot toner slurry. Toner prepared using this crash cooling method is cooled at a rate of less than 0.8° C./min. Polyester toners and polyester core shell toners having a borax coupling agent between the toner core and toner shell made from this crash cooling processes using less water results in an improvement to the toner's print density and usage efficiency.Type: ApplicationFiled: April 16, 2019Publication date: August 8, 2019Inventors: KASTURI RANGAN SRINIVASAN, ANNA SARA MCLELAND, RAHEL BEKRU BOGALE, TRENT DUANE PETER
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Publication number: 20190227451Abstract: The present disclosure relates generally to a method to make a chemically prepared toner that employs a crash cooling process. In particular, the crash cooling process involves the addition of a toner slurry having a temperature between 70° C. and 90° C. to an equivalent amount of cold water having a temperature between 5° C. and 20° C. Polyester and styrene acrylic toners as well as polyester core shell toners having a borax coupling agent between the toner core and toner shell made from this cooling process results in an improvement to the amount of toner waste, thereby achieving a higher toner usage efficiency for an electrophotographic printing system.Type: ApplicationFiled: April 3, 2019Publication date: July 25, 2019Inventors: KASTURI RANGAN SRINIVASAN, RAHEL BEKRU BOGALE, TRENT DUANE PETER, BRIAN DAVID MUNSON
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Publication number: 20190025724Abstract: The present disclosure relates generally to a method to make a chemically prepared toner that employs a crash cooling process. In particular, the crash cooling process involves the addition of a toner slurry having a temperature between 70° C. and 90° C. to an equivalent amount of cold water having a temperature between 5° C. and 20° C. Polyester and styrene acrylic toners as well as polyester core shell toners having a borax coupling agent between the toner core and toner shell made from this cooling process results in an improvement to the amount of toner waste, thereby achieving a higher toner usage efficiency for an electrophotographic printing system.Type: ApplicationFiled: September 21, 2018Publication date: January 24, 2019Inventors: KASTURI RANGAN SRINIVASAN, RAHEL BEKRU BOGALE, TRENT DUANE PETER, BRIAN DAVID MUNSON
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Patent number: 10108100Abstract: The present disclosure relates generally to a method to make a chemically prepared toner that employs a crash cooling process. In particular, the crash cooling process involves the addition of a toner slurry having a temperature between 70° C. and 90° C. to an equivalent amount of cold water having a temperature between 5° C. and 20° C. Polyester and styrene acrylic toners as well as polyester core shell toners having a borax coupling agent between the toner core and toner shell made from this cooling process results in an improvement to the amount of toner waste, thereby achieving a higher toner usage efficiency for an electrophotographic printing system.Type: GrantFiled: June 21, 2017Date of Patent: October 23, 2018Assignee: LEXMARK INTERNATIONAL, INC.Inventors: Kasturi Rangan Srinivasan, Rahel Bekru Bogale, Trent Duane Peter, Brian David Munson
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Patent number: 9671709Abstract: A chemically prepared toner composition according to one example embodiment includes a core including a first polymer binder, a second polymer binder, a colorant and a release agent; a shell that is formed around the core and includes a third polymer binder; and a borax coupling agent between the core and the shell. The first and third polymer binders are different amorphous polyester resins. The second polymer binder is a crystalline polyester resin and acts as a plasticizing agent in the core. The borax coupling agent assists in adhering the shell to the outer surface of the core. Optionally, the toner of the present invention may be finished with a set of extra particulate additives.Type: GrantFiled: December 31, 2013Date of Patent: June 6, 2017Assignee: LEXMARK INTERNATIONAL, INC.Inventors: Jing Sun, Kasturi Rangan Srinivasan, John Joseph Kraseski, Trent Duane Peter, Walter Mychajlowski, Tao Yu
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Publication number: 20160154333Abstract: A chemically prepared toner composition according to one example embodiment includes a core including a first polymer binder, a second polymer binder, a colorant and a release agent; a shell that is formed around the core and includes a third polymer binder; and a borax coupling agent between the core and the shell. The first and third polymer binders are different amorphous polyester resins. The second polymer binder is a crystalline polyester resin and acts as a plasticizing agent in the core. The borax coupling agent assists in adhering the shell to the outer surface of the core. Optionally, the toner of the present invention may be finished with a set of extra particulate additives.Type: ApplicationFiled: December 31, 2013Publication date: June 2, 2016Applicant: Lexmark International, Inc.Inventors: Jing Sun, Kasturi Rangan Srinivasan, John Joseph Kraseski, Trent Duane Peter, Walter Mychajlowski, Tao Yu
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Publication number: 20150301464Abstract: The present invention relates generally to chemically prepared toner and method of making the toner for use in electrophotography and more particularly to chemically prepared toner that can simultaneously fix at an energy saving low temperature and also be resistant to hot offset. The chemically prepared toner includes a mixture of a low molecular weight styrene acrylic resin and a low melting polyester resin. The amount of the low melt polyester resin must not exceed 40% by weight of the energy efficient toner of the present invention.Type: ApplicationFiled: April 16, 2014Publication date: October 22, 2015Applicant: Lexmark International, Inc.Inventors: Trent Duane Peter, Kasturi Rangan Srinivasan, Tao Yu
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Patent number: 7897318Abstract: The present disclosure relates to a process for producing a toner particulate composition from aqueous dispersions containing aggregates of a polymer binder and other toner ingredients. An ionic surfactant may be used to form the dispersion along with an ionic polymer flocculent wherein the ionic polymer flocculent undergoes a molecular conformational change, which may be triggered by pH adjustment, leading to flocculation and particle growth.Type: GrantFiled: November 29, 2007Date of Patent: March 1, 2011Assignee: Lexmark International, Inc.Inventors: Trent Duane Peter, Tao Yu
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Publication number: 20090142691Abstract: The present disclosure relates to a process for producing a toner particulate composition from aqueous dispersions containing aggregates of a polymer binder and other toner ingredients. An ionic surfactant may be used to form the dispersion along with an ionic polymer flocculent wherein the ionic polymer flocculent undergoes a molecular conformational change, which may be triggered by pH adjustment, leading to flocculation and particle growth.Type: ApplicationFiled: November 29, 2007Publication date: June 4, 2009Inventors: Trent Duane Peter, Tao Yu
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Patent number: 6991886Abstract: Toner is rounded by vigorously mixing less than about 5 percent by weight of particulate silica to the total weight of a starting toner in a closed, recirculating air system. The starting toner contains at least about 4.5 percent by weight of the starting toner of a wax and additionally contains at least 5 percent by weight of the starting toner of a softening agent. The temperature during the mixing is no more than 13 degrees C. above the onset of the glass transition temperature of the starting toner. The final toner comprises rounded starting toner having particulate silica embedded during the mixing process.Type: GrantFiled: June 7, 2004Date of Patent: January 31, 2006Assignee: Lexmark International, Inc.Inventors: John Joseph Earley, George Pharris Marshall, John Melvin Olson, Trent Duane Peter, Minerva Piffarerio, Vincent Wen-Hwa Ting, Ronald James Whildin
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Patent number: 5702524Abstract: The present invention is an improved flywheel for damping vibrations in a coating roll. The improved flywheel has an inner plate and an outer plate and sandwiched between the two plates are alternating rings of a solid body material such as aluminum or steel and conventional vibration damping material. Typically, the flywheel is attached to the coating roll outside of the bearing mounting block. The flywheel is designed such that movement of the inner and outer plates relative to each other works to compress the damping material sandwiched between the two plates. The plates are fastened together so that torsional motion between the plates, alternating rings, and coating roll is prevented. This compression of the damping material results in the absorption and dissipation of vibrational energy of the radial bending of the coating roll.Type: GrantFiled: March 25, 1996Date of Patent: December 30, 1997Assignee: Eastman Kodak CompanyInventors: Douglas Scott Finnicum, Lawrence J. Finucane, Jack Duane Peters, Son Minh Le
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Patent number: 4943060Abstract: A hand-held miniature snowman game, or toy comprises a transparent see-through cover, and a solid-colored base, containing three different diameter white balls within and having a ramp for the balls to roll up on while unit is held in an upright position, and a singular stake for the balls to fall in sequence to create a minature snowman large ball to go on stake first then medium ball to go on second and smallest ball to go on stake last. There are three different versions, the only difference is the amount of holes in each of the white balls, also is a round rule disk mounted at the lower part of the unit. A game or toy for 5 year old children and on up to all ages including adults.Type: GrantFiled: February 28, 1989Date of Patent: July 24, 1990Inventors: Duane Peters, Ty C. Peters
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Patent number: 4720107Abstract: Mini horseshoes, and mini stokes concealed in one container adapted for use as a game, toy, puzzle or etc. and can be used in any kind of weather indoors or outdoors, and including a compact light readily assembled device, and provided with a see through cover, and a solid colored base.The base has several threaded vertical holes therethrough. A stake is threaded into each hole. The stakes extend above the base and serve as targets for mini horseshoes or rings. The lower end of each stake has an enlarged head which is recessed in a rubber foot and anchors that foot to the base. The stakes are colored differently from one another and the horseshoes are correspondingly colored. Surrounding each stake is a colored circular area formed by a decal, or paint applied by a silkscreening process, or a disk or ring recessed into the surface of the base.Type: GrantFiled: January 21, 1986Date of Patent: January 19, 1988Inventors: Duane Peters, Ty C. Peters