Patents by Inventor Min-Hong Fu
Min-Hong Fu 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: 9851647Abstract: A photoconductor that includes, for example, a supporting substrate, an optional ground plane layer, an optional hole blocking layer, an optional adhesive layer, a photogenerating layer, and a charge transport layer, and where the charge transport layer contains a mixture of a charge transport component and a polycarbonate AP.Type: GrantFiled: October 13, 2016Date of Patent: December 26, 2017Assignee: Xerox CorporationInventors: Jin Wu, Kenny-Tuan Dinh, Lanhui Zhang, Jimmy E. Kelly, Mark S. Thomas, Min-Hong Fu, Lin Ma, Markus R. Silvestri, Marc J. LiVecchi, Robert W. Hedrick, Linda L. Ferrarese
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Patent number: 8394560Abstract: The presently disclosed embodiments are directed to layer(s) that are useful in imaging apparatus members and components, for use in electrophotography, including digital, apparatuses. More particularly, the present embodiments provide the negatively charged electrophotographic imaging members with a novel cross-linked charge blocking undercoat layer, which is created to comprise of a binary composition of melamine and formaldehyde or a triple composition consisting of a hydroxyl functional acrylic polyol binder and a methylolation of melamine-formaldehyde, and methods for making the same. The charge blocking layer provides stabilized cyclic photo-electrical properties, enhanced mechanical adhesion bonding, and improved copy print out quality for service life extension.Type: GrantFiled: June 25, 2010Date of Patent: March 12, 2013Assignee: Xerox CorporationInventors: Robert C. U. Yu, Yuhua Tong, Min-Hong Fu, Stephen T. Avery
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Patent number: 8088542Abstract: A photoconductor that includes, for example, a supporting substrate, a photogenerating layer, a charge transport layer, and an overcoat layer that contains a titanocene.Type: GrantFiled: March 31, 2008Date of Patent: January 3, 2012Assignee: Xerox CorporationInventors: Jin Wu, John F. Yanus, Kenny-Tuan Dinh, Kent J Evans, Min-Hong Fu, Susan M. Vandusen
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Publication number: 20110318675Abstract: The presently disclosed embodiments are directed to layer(s) that are useful in imaging apparatus members and components, for use in electrophotography, including digital, apparatuses. More particularly, the present embodiments provide the negatively charged electrophotographic imaging members with a novel cross-linked charge blocking undercoat layer, which is created to comprise of a binary composition of melamine and formaldehyde or a triple composition consisting of a hydroxyl functional acrylic polyol binder and a methylolation of melamine-formaldehyde, and methods for making the same. The charge blocking layer provides stabilized cyclic photo-electrical properties, enhanced mechanical adhesion bonding, and improved copy print out quality for service life extension.Type: ApplicationFiled: June 25, 2010Publication date: December 29, 2011Applicant: XEROX CORPORATIONInventors: Robert C. U. Yu, Yuhua Tong, Min-Hong Fu, Stephen T. Avery
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Patent number: 7989127Abstract: A photoconductor that includes, for example, a supporting substrate, a photogenerating layer, and at least one charge transport layer comprised of at least one charge transport component, and wherein the charge transport layer contains a carbazole.Type: GrantFiled: April 30, 2008Date of Patent: August 2, 2011Assignee: Xerox CorporationInventors: Jin Wu, Terry L Street, Terry L Bluhm, Kent J Evans, Edward F Grabowski, Susan M Vandusen, Min-Hong Fu, Kathleen M Carmichael
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Patent number: 7923185Abstract: A photoconductor that includes, for example, a supporting substrate, a photogenerating layer, and at least one charge transport layer comprised of at least one charge transport component, and wherein the charge transport layer contains a pyrazine.Type: GrantFiled: April 30, 2008Date of Patent: April 12, 2011Assignee: Xerox CorporationInventors: Jin Wu, Terry L Street, Terry L Bluhm, Kent J Evans, Edward F Grabowski, Susan M Vandusen, Min-Hong Fu, Kathleen M Carmichael
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Patent number: 7785759Abstract: A photoconductor that includes, for example, a supporting substrate, a photogenerating layer, and at least one charge transport layer containing at least one charge transport component, and wherein the charge transport layer also contains a thiadiazole.Type: GrantFiled: March 31, 2008Date of Patent: August 31, 2010Assignee: Xerox CorporationInventors: Jin Wu, Terry L Street, Terry L Bluhm, Kent J Evans, Edward F Grabowski, Susan M Vandusen, Min-Hong Fu, Kathleen M Carmichael
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Patent number: 7704656Abstract: A photoreceptor comprising a charge transport layer doped with a polyarylate polymer is provided. A charge transport layer is doped with about 0.1 to about 10.0% by weight, solids basis, of a polyarylate polymer, such as for example Ardel. Charge transport layers doped with a polyarylate polymer exhibit improved electrical performance in terms of lower Vr and VBG values.Type: GrantFiled: March 23, 2005Date of Patent: April 27, 2010Assignee: Xerox CorporationInventors: Min-Hong Fu, Kent J. Evans, David M. Skinner, Kathleen M. Carmichael, June E. Schneider, Susan M. VanDusen
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Publication number: 20090274968Abstract: A photoconductor that includes, for example, a supporting substrate, a photogenerating layer, and at least one charge transport layer comprised of at least one charge transport component, and wherein the charge transport layer contains a pyrazine.Type: ApplicationFiled: April 30, 2008Publication date: November 5, 2009Applicant: XEROX CORPORATIONInventors: Jin Wu, Terry L. Street, Terry L. Bluhm, Kent J. Evans, Edward F. Grabowski, Susan M. Vandusen, Min-Hong Fu, Kathleen M. Carmichael
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Publication number: 20090274970Abstract: A photoconductor that includes, for example, a supporting substrate, a photogenerating layer, and at least one charge transport layer comprised of at least one charge transport component, and wherein the charge transport layer contains a carbazole.Type: ApplicationFiled: April 30, 2008Publication date: November 5, 2009Applicant: XEROX CORPORATIONInventors: Jin Wu, Terry L. Street, Terry L. Bluhm, Kent J. Evans, Edward F. Grabowski, Susan M. Vandusen, Min-Hong Fu, Kathleen M Carmichael
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Publication number: 20090246667Abstract: A photoconductor that includes, for example, a supporting substrate, a photogenerating layer, and at least one charge transport layer containing at least one charge transport component, and wherein the charge transport layer also contains a thiadiazole.Type: ApplicationFiled: March 31, 2008Publication date: October 1, 2009Applicant: XEROX CORPORATIONInventors: Jin Wu, Terry L. Street, Terry L. Bluhm, Kent J. Evans, Edward F. Grabowski, Susan M. Vandusen, Min-Hong Fu, Kathleen M. Carmichael
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Publication number: 20090246657Abstract: A photoconductor that includes, for example, a supporting substrate, a photogenerating layer, a charge transport layer, and an overcoat layer that contains a titanocene.Type: ApplicationFiled: March 31, 2008Publication date: October 1, 2009Applicant: XEROX CORPORATIONInventors: Jin Wu, John F. Yanus, Kenny-Tuan Dinh, Kent J. Evans, Min-Hong Fu, Susan M. Vandusen
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Patent number: 7459251Abstract: An imaging member comprising a barrier or under-layer intermediate a photogenerating layer and charge transport layer to reduce charge deficiency spots. The barrier under-layer comprises a film forming polymer binder selected from a conductive polymer binder, a non-conductive polymer binder, or mixtures thereof. Optionally, the barrier layer can include a small amount of a charge transport material.Type: GrantFiled: December 21, 2005Date of Patent: December 2, 2008Assignee: Xerox CorporationInventors: Satchidanand Mishra, Kathleen M. Carmichael, Yuhua Tong, Anthony M. Horgan, Edward F. Grabowski, Richard L. Post, Robert C. U. Yu, Dennis J. Prosser, Edward Domm, Min-Hong Fu
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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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Publication number: 20070141491Abstract: An imaging member comprising a barrier or under-layer intermediate a photogenerating layer and charge transport layer to reduce charge deficiency spots. The barrier under-layer comprises a film forming polymer binder selected from a conductive polymer binder, a non-conductive polymer binder, or mixtures thereof. Optionally, the barrier layer can include a small amount of a charge transport material.Type: ApplicationFiled: December 21, 2005Publication date: June 21, 2007Inventors: Satchidanand Mishra, Kathleen Carmichael, Yuhua Tong, Anthony Horgan, Edward Grabowski, Richard Post, Robert Yu, Dennis Prosser, Edward Domm, Min-Hong Fu
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Patent number: 7232634Abstract: A charge transport layer for an imaging member comprising a charge transport material with a nitrogen molecular defense system not exhibiting early onset of charge transport layer fatigue cracking. The nitrogen molecular defense system includes attaching bulky organic groups to charge transport materials. The bulky groups aid in preventing recrystallization of the charge transport molecule and shield the nitrogen from molecular attack, such as by oxidation. The charge transport layer exhibits excellent wear resistance, excellent electrical performance, and outstanding print quality.Type: GrantFiled: September 30, 2004Date of Patent: June 19, 2007Assignee: Xerox CorporationInventors: Yuhua Tong, Timothy J. Fuller, Sean X. Pan, John F. Yanus, Alexander N. Klymachyov, Min-Hong Fu, Dennis J. Prosser, Susan M. VanDusen
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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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Publication number: 20070059616Abstract: An imaging member includes a conductive substrate, a SiOx layer coated over the conductive substrate, a charge generating layer coated over the SiOx layer, and a charge transport layerType: ApplicationFiled: September 12, 2005Publication date: March 15, 2007Applicant: Xerox CorporationInventors: Satchidanand Mishra, Anthony Horgan, Kent Evans, George Liebermann, Ah-Mee Hor, Min-Hong Fu, Richard Post, Kathleen Carmichael, Satish Parikh, Edward Grabowski, Donald Goodman, Gregory Kovacs
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Publication number: 20060257770Abstract: Dispersions for producing photogenerator layers of photoreceptors are provided. The dispersions include a resin, a photogenerating component, and an adhesive.Type: ApplicationFiled: May 10, 2005Publication date: November 16, 2006Inventors: Kent Evans, David Skinner, Min-Hong Fu, Kathleen Carmichael, June Schneider, John Bergfjord, Susan VanDusen