Patents by Inventor Kathleen M. Carmichael
Kathleen M. Carmichael 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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Publication number: 20070292790Abstract: An imaging member containing an optional supporting substrate, a photogenerating layer, and at least one charge transport layer of at least one charge transport component, at least one polyphenyl thioether of the formula wherein R1, R2, and R3 are independently selected from the group consisting of hydrogen, alkyl, aryl, alkoxy, substituted alkyl, substituted aryl, substituted alkoxy, and halogen, and n is a number of from about 1 to about 10; and wherein a thiophosphate is contained in the photogenerating layer.Type: ApplicationFiled: June 15, 2006Publication date: December 20, 2007Inventors: Jin Wu, Kenny-Tuan Dinh, Kathleen M. Carmichael, Michael S. Roetker, Kent J. Evans, Geoffrey M.T. Foley, Anthony M. Horgan, Yonn K. Rasmussen, Satchidanand Mishra, Edward F. Grabowski, Liang-Bih Lin, Markus R. Silvestri
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Patent number: 7297457Abstract: An imaging member having a substrate, a charge transport layer having a polymer and a first charge transport material dispersed therein, and wherein the charge transport layer has a glass transition temperature of from about 10 to about 45° C.; and an overcoat layer on the charge transport layer, wherein the overcoat layer includes a second polymer and a second charge transport material dispersed therein.Type: GrantFiled: November 18, 2004Date of Patent: November 20, 2007Assignee: Xerox CorporationInventors: Anthony M. Horgan, Robert C. U. Yu, Satchidanand Mishra, Richard L. Post, Edward F. Grabowski, Min-Hong Fu, Kathleen M. Carmichael, David M. Skinner
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Patent number: 7267917Abstract: A charge transport layer composition for a photoreceptor includes at least a binder, at least one arylamine charge transport material, e.g., N,N?-diphenyl-N,N?-bis(3-methylphenyl)-(1,1?-biphenyl)-4,4?-diamine, and at least one polymer containing carboxylic acid groups or groups capable of forming carboxylic acid groups. The charge transport layer forms a layer of photoreceptor, which also includes an optional anti-curl layer, a substrate, an optional hole blocking layer, an optional adhesive layer, a charge generating layer, and optionally one or more overcoat or protective layers.Type: GrantFiled: September 21, 2004Date of Patent: September 11, 2007Assignee: Xerox CorporationInventors: Yuhua Tong, Kenny-Tuan T. Dinh, Markus R. Silvestri, Michael E. Zak, John F. Yanus, Min-Hong Fu, David M. Skinner, Kathleen M. Carmichael, Colleen A. Helbig, Dale S. Renfer, John A. Bergfjord, Sr., Susan M. Van Dusen, Anthony M. Horgan, Jin Wu, Steven M. Sterling
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Patent number: 7192678Abstract: A charge transport layer composition for a photoreceptor includes at least a binder and a charge transport material of about 100% to about 40% by weight of a total of the charge transport layer N,N-dimethylphenyl)-4-biphenylamine and about 0% to about 60% N,N?-dephenyl-N,N?-bis(3-methylphenyl)-(1,1?-biphenyl)-4,4?-diamine, and wherein the total charge transport material in the composition is 48% or less of the total solids of the composition. The charge transport layer forms a layer of a photoreceptor, which also includes an optional anti-curl layer, a substrate, an optional hole blocking layer, an optional adhesive layer, a charge generating layer, and optionally one or more overcoat or protective layers.Type: GrantFiled: July 13, 2004Date of Patent: March 20, 2007Assignee: Xerox CorporationInventors: Yuhua Tong, Kenny-Tuan T. Dinh, Markus R. Silvestri, Michael E. Zak, John F. Yanus, Min-Hong Fu, David M. Skinner, Kathleen M. Carmichael, Colleen A. Helbig, Dale S. Renfer, John A. Bergfjord, Sr., Susan M. Van Dusen
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Patent number: 7166399Abstract: An electrostatographic imaging member having a charge-retentive surface and a substrate, an imaging layer to receive an electrostatic latent image thereon, wherein the imaging layer is positioned on one side of the substrate, and an anti-curl backing layer positioned on the substrate on a side opposite to that of the imaging layer, wherein the anti-curl backing layer has a polymer binder and lignin sulfonic acid doped polyaniline, and an image forming apparatus having the above imaging member or photoreceptor to receive an electrostatic latent image on a charge-retentive surface of the photoreceptor or imaging member; a development component to apply toner to the charge-retentive surface to develop the electrostatic latent image to form a developed image on the charge-retentive surface; a transfer member to transfer the developed image from the charge-retentive surface to a copy substrate; and a fixing component to fuse the developed image to the copy substrate.Type: GrantFiled: April 14, 2004Date of Patent: January 23, 2007Assignee: Xerox CorporationInventors: Kathleen M. Carmichael, Robert C. U. Yu, Richard L. Post, Anthony M. Horgan, Satchidanand Mishra, Edward F. Grabowski, Satish R. Parikh, Donald J. Goodman, David M. Skinner
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Patent number: 7150950Abstract: An electrostatographic imaging member having a flexible supporting substrate, an imaging layer capable of retaining an electrostatic latent image, and an electrically conductive ground strip layer comprising a film forming binder and a lignin sulfonic acid doped polyaniline dispersion, and an image forming apparatus with the above imaging member to receive an electrostatic latent image on a charge-retentive surface of the imaging member; a development component to apply toner to the charge-retentive surface to develop the electrostatic latent image to form a developed toner image on the charge-retentive surface; a transfer component to transfer the developed toner image from the charge-retentive surface to a receiving copy substrate; and a fixing component to fuse the developed image to the receiving copy substrate.Type: GrantFiled: April 14, 2004Date of Patent: December 19, 2006Assignee: Xerox CorporationInventors: Robert C. U. Yu, Satchidanand Mishra, Anthony M. Horgan, Richard L. Post, Edward F. Grabowski, Kathleen M. Carmichael, Satish Parikh, Bing R. Hsieh, Donald C. VonHoene
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Patent number: 7052813Abstract: A charge transport layer for an imaging member comprising a first and second charge transport layer wherein the second charge transport layer comprises a charge transport component, a hindered phenol covalently bonded to a polymer, and an additional polymer binder other than the polymer containing the hindered phenol. The charge transport layer exhibits excellent wear resistance, excellent electrical performance, and excellent print quality.Type: GrantFiled: August 4, 2005Date of Patent: May 30, 2006Assignee: Xerox CorporationInventors: Yuhua Tong, Timothy J. Fuller, Colleen A. Helbig, Kent J. Evans, John F. Yanus, Karen S. Garland, Paul J. DeFeo, Anita P. Lynch, Kathleen M. Carmichael, Damodar M. Pai, Dale S. Renfer, Markus R. Silvestri
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Patent number: 7033714Abstract: An imaging member having a charge transport layer is provided. The charge transport layer includes a plurality of charge transport layers coated from solutions of similar or different compositions or concentrations, wherein the upper or additional transport layer(s) comprise a lower concentration of charge transport compound than the first (bottom) charge transport layer. The charge transport compound included in the first (bottom) charge transport layer may either be the same or different from that included in the additional charge transport layers. The charge transport compound in one or more of the layers is dissolved or molecularly dispersed in an electrically inactive polymer material to form a solid solution. In such a construction, the resulting charge transport layer exhibits enhanced cracking suppression, improves wear resistance, provides excellent imaging member electrical performance, and delivers improved print quality.Type: GrantFiled: December 16, 2003Date of Patent: April 25, 2006Assignee: Xerox CorporationInventors: Anthony M. Horgan, Robert C Yu, Satchidanand Mishra, Richard L. Post, Edward F. Grabowski, Kathleen M. Carmichael, John R. Lambie
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Patent number: 7031647Abstract: A belt having a substrate with a first binder and a lignin sulfonic acid doped polyaniline dispersion, along with an image forming apparatus for forming images on a recording medium and having a charge-retentive surface to receive an electrostatic latent image thereon, a development component to apply toner to the charge-retentive surface to develop the electrostatic latent image to form a developed toner image on the charge retentive surface, a transfer member to transfer the developed image from the charge retentive surface to a copy substrate, and the transfer member has a substrate with a binder and a dispersion of lignin sulfonic acid doped polyaniline, and further, a fixing component to fuse the developed image to the copy substrate.Type: GrantFiled: April 14, 2004Date of Patent: April 18, 2006Assignee: Xerox CorporationInventors: Satchidanand Mishra, Robert C. U. Yu, Richard L. Post, Anthony M. Horgan, Edward F. Grabowski, Kathleen M. Carmichael, Satish R. Parikh, Bing R. Hsieh, Donald C. VonHoene
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Patent number: 7022445Abstract: A charge transport layer for an imaging member comprising a charge transport layer wherein the charge transport layer is coated in two passes and wherein the second pass comprises the application of a charge transport component and a hindered phenol covalently bonded to a polymer. The charge transport layer exhibits excellent wear resistance, excellent electrical performance, and excellent print quality.Type: GrantFiled: December 16, 2002Date of Patent: April 4, 2006Assignee: Xerox CorporationInventors: Yuhua Tong, Timothy J. Fuller, Colleen A. Helbig, Kent J. Evans, John F. Yanus, Karen S. Garland, Paul J. DeFeo, Anita P. Lynch, Kathleen M. Carmichael, Damodar M. Pai, Dale S. Renfer, Markus R. Silvestri
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Patent number: 7018756Abstract: A photoconductive imaging member is disclosed comprising a charge generation layer and a charge transport layer comprising an oxidative inhibitor. An electrophotographic imaging process using the imaging member of the invention is also described.Type: GrantFiled: September 5, 2003Date of Patent: March 28, 2006Assignee: Xerox CorporationInventors: Damodar M. Pai, Kent J. Evans, Kathleen M. Carmichael, Colleen A. Helbig, John F. Yanus, Yuhua Tong, Timothy J. Fuller, Karen S. Garland, Paul J. DeFeo, Anita P. Lynch
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Patent number: 7008741Abstract: A photoconductive imaging member containing a photogenerating layer, a charge transport layer, or a plurality of charge transport layers, and which charge transport, especially the top charge transport layer contains a vinyl containing organic compound.Type: GrantFiled: April 24, 2003Date of Patent: March 7, 2006Assignee: Xerox CorporationInventors: Robert C. U. Yu, Satchidanand Mishra, Anthony M. Horgan, Richard L. Post, Yuhua Tong, Edward F. Grabowski, Kathleen M. Carmichael, Markus R. Silvestri
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Patent number: 7005222Abstract: An imaging member having a charge transport layer with multiple regions is provided. The charge transport layer includes a plurality of charge transport layers coated from solutions of similar or different compositions or concentrations, wherein at least the top or uppermost transport layer comprises a lower concentration of charge transport compound than the first (bottom) charge transport layer. The charge transport compound included in the first (bottom) charge transport layer may either be of the same or different compounds from that included in the top or additional charge transport layer(s). The charge transport compound present in each layer may be dissolved or molecularly dispersed in an electrically inactive polymer material to form a solid solution. In such a construction, the resulting charge transport layer exhibits enhanced cracking suppression, improves wear resistance, provides excellent imaging member electrical performance, and delivers improved print quality.Type: GrantFiled: December 16, 2003Date of Patent: February 28, 2006Assignee: Xerox CorporationInventors: Anthony M. Horgan, Satchidanand Mishra, Robert C. Yu, Richard L. Post, Edward F. Grabowski, Kathleen M. Carmichael, John R. Lambie
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Patent number: 6933089Abstract: A charge transport layer for an imaging member comprising a dual charge transport layer and wherein the charge transport layers comprise a photogenerating layer; (1) a first charge transport layer comprised of a charge transport component and a resin binder; and thereover and in contact with the first layer; (2) a second top charge transport layer comprised of a charge transport component, a resin binder and a hindered phenol dopant. The charge transport layer exhibits, excellent electrical performance, outstanding print quality and reduces the diffusion of the anti-oxidant into the charge generator layer.Type: GrantFiled: December 16, 2002Date of Patent: August 23, 2005Assignee: Xerox CorporationInventors: Anthony M. Horgan, Satchidanand Mishra, Robert C. U. Yu, Kathleen M. Carmichael, Kent J. Evans, Timothy J. Fuller, Colleen A. Helbig, John F. Yanus, Damodar M. Pai, Karen S. Garland
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Publication number: 20040214100Abstract: A photoconductive imaging member containing a photogenerating layer, a charge transport layer, or a plurality of charge transport layers, and which charge transport, especially the top charge transport layer contains a vinyl containing organic compound.Type: ApplicationFiled: April 24, 2003Publication date: October 28, 2004Applicant: Xerox CorporationInventors: Robert C.U. Yu, Satchidanand Mishra, Anthony M. Horgan, Richard L. Post, Yuhua Tong, Edward F. Grabowski, Kathleen M. Carmichael, Markus R. Silvestri
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Patent number: 6790573Abstract: An imaging member including at least a support, a charge blocking layer, a charge imaging layer, and an interfacial adhesive layer including at least a copolyester-polycarbonate resin. A process for fabricating the imaging member is also disclosed.Type: GrantFiled: January 25, 2002Date of Patent: September 14, 2004Assignee: Xerox CorporationInventors: Stephan V. Drappel, Kathleen M. Carmichael, David J. Maty, John A. Bergfjord, Sr.
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Patent number: 6780554Abstract: A charge transport layer for an imaging member comprising a photogenerating layer, (1) a first charge transport layer comprised of a charge transport component and a resin binder, and thereover and in contact with the first layer (2) a second top charge transport layer comprised of a charge transport component, and a polymer of a styrene containing hindered phenol. The charge transport layer exhibits excellent wear resistance, excellent electrical performance, and outstanding print quality.Type: GrantFiled: December 16, 2002Date of Patent: August 24, 2004Assignee: Xerox CorporationInventors: Yuhua Tong, Timothy J. Fuller, Colleen A. Helbig, Kent J. Evans, John F. Yanus, Karen S. Garland, Paul J. DeFeo, Anita P. Lynch, Kathleen M. Carmichael, Damodar M. Pai
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Patent number: 6770410Abstract: An imaging member including, for example, a substrate, a charge blocking layer, an optional adhesive layer, a charge generating layer, a charge transporting layer comprising a charge transport component and a polymer binder substantially free of low molecular weight fractions.Type: GrantFiled: October 31, 2002Date of Patent: August 3, 2004Assignee: Xerox CorporationInventors: Robert C. U. Yu, Timothy J. Fuller, Kathleen M. Carmichael
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Publication number: 20040126684Abstract: An imaging member having a charge transport layer is provided. The charge transport layer includes a plurality of charge transport layers coated from solutions of similar or different compositions or concentrations, wherein the upper or additional transport layer(s) comprise a lower concentration of charge transport compound than the first (bottom) charge transport layer. The charge transport compound included in the first (bottom) charge transport layer may either be the same or different from that included in the additional charge transport layers. The charge transport compound in one or more of the layers is dissolved or molecularly dispersed in an electrically inactive polymer material to form a solid solution. In such a construction, the resulting charge transport layer exhibits enhanced cracking suppression, improves wear resistance, provides excellent imaging member electrical performance, and delivers improved print quality.Type: ApplicationFiled: December 16, 2003Publication date: July 1, 2004Applicant: Xerox CorporationInventors: Anthony M. Horgan, Robert C.U. Yu, Satchidanand Mishra, Richard L. Post, Edward F. Grabowski, Kathleen M. Carmichael, John R. Lambie
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Publication number: 20040126685Abstract: An imaging member having a charge transport layer with multiple regions is provided. The charge transport layer includes a plurality of charge transport layers coated from solutions of similar or different compositions or concentrations, wherein at least the top or uppermost transport layer comprises a lower concentration of charge transport compound than the first (bottom) charge transport layer. The charge transport compound included in the first (bottom) charge transport layer may either be of the same or different compounds from that included in the top or additional charge transport layer(s). The charge transport compound present in each layer may be dissolved or molecularly dispersed in an electrically inactive polymer material to form a solid solution. In such a construction, the resulting charge transport layer exhibits enhanced cracking suppression, improves wear resistance, provides excellent imaging member electrical performance, and delivers improved print quality.Type: ApplicationFiled: December 16, 2003Publication date: July 1, 2004Applicant: Xerox CorporationInventors: Anthony M. Horgan, Satchidanand Mishra, Robert C.U. Yu, Richard L. Post, Edward F. Grabowski, Kathleen M. Carmichael, John R. Lambie