Patents by Inventor Bradley L. Beach
Bradley L. Beach 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: 7352988Abstract: A fuser member adapted to fuse toner onto the surface of a recording medium as the recording medium passes a nip area of the fuser member comprises a electrically conductive polymer layer, a resistive layer, and an electrically conductive layer. The fuser member further comprises a current supply element and a current return element, wherein the current supply element and the current return element are configured to provide current flow through the electrically conductive polymer layer and the resistive layer to generate fusing heat at the nip area.Type: GrantFiled: June 16, 2005Date of Patent: April 1, 2008Assignee: Lexmark International, Inc.Inventors: Bradley L. Beach, Ronald L. Roe, Jerry W. Smith
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Patent number: 7347808Abstract: Rolls having a polyurethane elastomer formed from a polyurethane mixture, wherein the polyurethane mixture comprises polydiene, tri-functional polyol curative, an additional graft polymer curative having a molecular weight of at least about 800 and comprising diol, polyol, diamine, polyamine or a combination thereof, conductive modifier, antioxidant, and hydrolytic stabilizer. Methods of forming such rolls include casting the polyurethane mixture, followed by curing, then demolding, grinding to desired dimensions and baking such that the outer layer of the cured roll is oxidized.Type: GrantFiled: January 13, 2004Date of Patent: March 25, 2008Assignee: Lexmark International, Inc.Inventors: Bradley L. Beach, Bhaskar Gopalanarayanan, Johnny D. Massie, II
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Patent number: 7336919Abstract: A fuser member adapted to fuse toner onto the surface of a recording medium as the recording medium passes a nip area of the fuser member comprises a electrically conductive polymer layer, a resistive layer, an electrically conductive layer, a primer layer, and a release layer. The fuser member further comprises a current supply element and a current return element, wherein the current supply element and the current return element are configured to provide current flow through the electrically conductive polymer layer and the resistive layer to generate fusing heat at the nip area.Type: GrantFiled: June 16, 2005Date of Patent: February 26, 2008Assignee: Lexmark International, Inc.Inventors: Bradley L. Beach, Ronald L. Roe, Jerry W. Smith
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Patent number: 7292815Abstract: A fuser member adapted to fuse toner onto the surface of a recording medium as the recording medium passes a nip area of the fuser member comprises a electrically conductive polymer layer, a resistive layer, and an electrically conductive layer. The fuser member further comprises a current supply roll and a current return roll, wherein the current supply roll and the current return roll are configured to provide current flow through the electrically conductive polymer layer and the resistive layer to generate fusing heat at the nip area.Type: GrantFiled: June 16, 2005Date of Patent: November 6, 2007Assignee: Lexmark International, Inc.Inventors: Bradley L. Beach, Ronald L. Roe, Scott S. Wu
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Patent number: 7034097Abstract: Polyurethane elastomers are formed from first and second graft curatives, each graft curative having a molecular weight of at least about 800, wherein the first and second graft curatives are substantially immiscible with one another, and wherein the polyurethane elastomer exhibits a hardness of less than about 40 Shore A according to ASTM D2240-86 and a compression set of less than about 8% according to ASTM D395-89, method B, at a temperature of about 70° C. for about 22 hours. Rolls are manufactured using such polyurethane elastomers, particularly rolls that are suitable for use in image forming devices, such as electrophotographic print applications.Type: GrantFiled: January 13, 2004Date of Patent: April 25, 2006Assignee: Lexmark International, Inc.Inventors: Bradley L. Beach, Bhaskar Gopalanarayanan, Kelly A. Killeen, Johnny D. Massie, II, Ronald L. Roe
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Patent number: 6689528Abstract: Heat rolls and fuser belts utilized in the fusing step of the electrophotographic process are disclosed. These belts and rollers eliminate toner offset while still maintaining excellent release characteristics of the printed page from the fuser. The heat rolls comprise a core member having coated thereon a plurality of concentric layers, wherein at least one of said layers (preferably the top layer) does not contain electrically conductive materials and wherein the roll exhibits electrical breakdown at about 250 volts or less. The fuser belts comprise a heat resistant resin substrate (such as a polyimide belt) carrying thereon a plurality of layers coating the outer surface of said belt, wherein at least one of said layers (preferably the top layer) does not contain electrically conductive materials and wherein the belt exhibits electrical breakdown at about 250 volts or less.Type: GrantFiled: March 27, 2003Date of Patent: February 10, 2004Assignee: Lexmark International, Inc.Inventors: Gregory L. Ream, Ronald L. Roe, Bradley L. Beach, Steven A. Curry
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Publication number: 20030190470Abstract: Heat rolls and fuser belts utilized in the fusing step of the electrophotographic process are disclosed. These belts and rollers eliminate toner offset while still maintaining excellent release characteristics of the printed page from the fuser. The heat rolls comprise a core member having coated thereon a plurality of concentric layers, wherein at least one of said layers (preferably the top layer) does not contain electrically conductive materials and wherein the roll exhibits electrical breakdown at about 250 volts or less. The fuser belts comprise a heat resistant resin substrate (such as a polyimide belt) carrying thereon a plurality of layers coating the outer surface of said belt, wherein at least one of said layers (preferably the top layer) does not contain electrically conductive materials and wherein the belt exhibits electrical breakdown at about 250 volts or less.Type: ApplicationFiled: March 27, 2003Publication date: October 9, 2003Inventors: Gregory L. Ream, Ronald L. Roe, Bradley L. Beach, Steven A. Curry
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Publication number: 20010044025Abstract: Heat rolls and fuser belts utilized in the fusing step of the electrophotographic process are disclosed. These belts and rollers eliminate toner offset while still maintaining excellent release characteristics of the printed page from the fuser. The heat rolls comprise a core member having coated thereon a plurality of concentric layers, wherein at least one of said layers (preferably the top layer) does not contain electrically conductive materials and wherein the roll exhibits electrical breakdown at about 250 volts or less. The fuser belts comprise a heat resistant resin substrate (such as a polyimide belt) carrying thereon a plurality of layers coating the outer surface of said belt, wherein at least one of said layers (preferably the top layer) does not contain electrically conductive materials and wherein the belt exhibits electrical breakdown at about 250 volts or less.Type: ApplicationFiled: June 19, 2001Publication date: November 22, 2001Inventors: Gregory L. Ream, Ronald L. Roe, Bradley L. Beach, Steven A. Curry
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Patent number: 6309452Abstract: A wet rub resistant ink composition comprises, by weight, at least about 15% carrier medium, colorant in an amount of no more than about 20%, and at least about 2% polymeric capsules having central cavities containing water. The composition is substantially free of film-forming resins. The ink composition may be used in combination with other ink compositions having different colors or shades to increase the color gamut of an ink system.Type: GrantFiled: December 2, 1999Date of Patent: October 30, 2001Assignee: Lexmark International, Inc.Inventors: Bradley L. Beach, Ameeta B. Madhava, Anna M. Pearson, Ajay K. Suthar
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Patent number: 6284373Abstract: Heat rolls and fuser belts utilized in the fusing step of the electrophotographic process are disclosed. These belts and rollers eliminate toner offset while still maintaining excellent release characteristics of the printed page from the fuser. The heat rolls comprise a core member having coated thereon a plurality of concentric layers, wherein at least one of said layers (preferably the top layer) does not contain electrically conductive materials and wherein the roll exhibits electrical breakdown at about 250 volts or less. The fuser belts comprise a heat resistant resin substrate (such as a polyimide belt) carrying thereon a plurality of layers coating the outer surface of said belt, wherein at least one of said layers (preferably the top layer) does not contain electrically conductive materials and wherein the belt exhibits electrical breakdown at about 250 volts or less.Type: GrantFiled: September 10, 1999Date of Patent: September 4, 2001Assignee: Lexmark International, Inc.Inventors: Gregory L. Ream, Ronald L. Roe, Bradley L. Beach, Steven A. Curry
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Patent number: 6160073Abstract: A silicone copolymer for use in an electrophotographic process is disclosed. This composition includes a specifically-defined heat-stable silicone oil-silicone wax copolymer. The copolymer has a melting point such that it is liquid on the hot fuser roll, but solidifies at room temperature on the printed page. A random silicone copolymer, in the form of a paste or pliable caulk, which is useful for sealing leaks in toner cartridges is also disclosed. Finally, the method for preparing these copolymers is disclosed.Type: GrantFiled: May 14, 1999Date of Patent: December 12, 2000Assignee: Lexmark International, Inc.Inventors: Kathryn E. Dowlen, Bradley L. Beach, Steven A. Curry, Earl D. Ward, II
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Patent number: 6084049Abstract: A release agent composition for use in an electrophotographic process is disclosed. This composition includes a specifically-defined heat-stable silicone oil-silicone wax random copolymer. The copolymer has a melting point such that it is liquid on the hot fuser roll, but solidifies at room temperature on the printed page. A random silicone copolymer, in the form of a paste or pliable caulk, which is useful for sealing leaks in toner cartridges is also disclosed. Finally, the method for preparing these copolymers is disclosed.Type: GrantFiled: May 13, 1997Date of Patent: July 4, 2000Assignee: Lexmark International, Inc.Inventors: Bradley L. Beach, Kathryn E. Dowlen, Terence E. Franey, Douglas C. Hamilton, Gerald G. Leslie, Alexander D. Meade, Jing X. Sun, Peter E. Wallin
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Patent number: 5959056Abstract: A release agent composition for use in an electrophotographic process is disclosed. This composition includes a specifically-defined heat-stable silicone oil-silicone wax copolymer. The copolymer has a melting point such that it is liquid on the hot fuser roll, but solidifies at room temperature on the printed page. A random silicone copolymer, in the form of a paste or pliable caulk, which is useful for sealing leaks in toner cartridges is also disclosed. Finally, the method for preparing these copolymers is disclosed.Type: GrantFiled: September 25, 1997Date of Patent: September 28, 1999Assignee: Lexmark International, Inc.Inventors: Bradley L. Beach, Kathryn E. Dowlen, Terence E. Franey, Douglas C. Hamilton, Gerald G. Leslie, Alexander D. Meade, Jing X. Sun, Peter E. Wallin
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Patent number: 5952442Abstract: A silicone copolymer for use in an electrophotographic process is disclosed. This composition includes a specifically-defined heat-stable silicone oil-silicone wax copolymer. The copolymer has a melting point such that it is liquid on the hot fuser roll, but solidifies at room temperature on the printed page. A random silicone copolymer, in the form of a paste or pliable caulk, which is useful for sealing leaks in toner cartridges is also disclosed. Finally, the method for preparing these copolymers is disclosed.Type: GrantFiled: September 25, 1997Date of Patent: September 14, 1999Assignee: Lexmark International, Inc.Inventors: Kathryn E. Dowlen, Bradley L. Beach, Steven A. Curry, Earl D. Ward, II
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Patent number: 5929186Abstract: A release agent composition for use in an electrophotographic process is disclosed. This composition includes a specifically-defined heat-stable silicone oil-silicone wax random copolymer. The copolymer has a melting point such that it is liquid on the hot fuser roll, but solidifies at room temperature on the printed page. A random silicone copolymer, in the form of a paste or pliable caulk, which is useful for sealing leaks in toner cartridges is also disclosed. Finally, the method for preparing these copolymers is disclosed.Type: GrantFiled: September 25, 1997Date of Patent: July 27, 1999Assignee: Lexmark International, Inc.Inventors: Jing X. Sun, Terence E. Franey, Bradley L. Beach, Kathryn E. Dowlen
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Patent number: 5783719Abstract: A release agent composition for use in an electrophotographic process is disclosed. This composition includes a specifically-defined heat-stable silicone oil-silicone wax random copolymer. The copolymer has a melting point such that it is liquid on the hot fuser roll, but solidifies at room temperature on the printed page. A random silicone copolymer, in the form of a paste or pliable caulk, which is useful for sealing leaks in toner cartridges is also disclosed. Finally, the method for preparing these copolymers is disclosed.Type: GrantFiled: May 13, 1997Date of Patent: July 21, 1998Assignee: Lexmark International, Inc.Inventors: Jing X. Sun, Terence E. Franey, Bradley L. Beach, Kathryn E. Dowlen
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Patent number: 5735941Abstract: An ink system comprising a first ink containing a flocculating dye in an aqueous solution and a second ink containing a dispersant-pigment complex in an aqueous solution reduces bleed between the two inks when they are applied side by side.Type: GrantFiled: July 24, 1996Date of Patent: April 7, 1998Assignee: Lexmark International, Inc.Inventors: James F. Feeman, Ann P. Holloway, Agnes K. Zimmer, Jing X. Sun, Terence E. Franey, James M. Mrvos, Bradley L. Beach
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Patent number: 5714538Abstract: The invention relates to polymeric dispersants used in formulating aqueous ink compositions, as well as inks containing those dispersants. The dispersants are graft copolymers comprising a hydrophilic polymeric segment, a hydrophobic polymeric segment incorporating a hydrolytically-stable siloxyl substituent, and a stabilizing segment, such as a reactive surfactant macromer, a protective colloid macromer, or a non-siloxyl hydrophobic monomer. The inks made with these dispersants show excellent stability, print characteristics, water-fastness, optical density, and in-use maintenance characteristics.Type: GrantFiled: December 26, 1995Date of Patent: February 3, 1998Assignee: Lexmark International, Inc.Inventors: Bradley L. Beach, Anna Marie Pearson, Jing Xiao Sun, Richard B. Watkins
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Patent number: 5589522Abstract: The invention relates to an aqueous ink composition for use in ink jet printers comprising an aqueous carrier, a pigment, and, preferably, a graft polymer having a polyacrylic acid backbone and hydrophobic side chains.Type: GrantFiled: December 21, 1994Date of Patent: December 31, 1996Assignee: Lexmark International, Inc.Inventors: Bradley L. Beach, James F. Feeman, Anna M. Pearson, Jing X. Sun
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Patent number: 5562876Abstract: Open-Cell urethane foam is thoroughly dried in a convection oven or controlled atmosphere and then compressed with heat to a felt immediately. Alternatively, the dried foam is sealed in a plastic bag until the felting step. The amount of non-volatile residue is significantly reduced to produce a foam for use to contain ink in an ink jet cartridge.Type: GrantFiled: May 10, 1995Date of Patent: October 8, 1996Assignee: Lexmark International, Inc.Inventors: Bradley L. Beach, Donald L. Elbert, Terence E. Franey, Sean D. Smith