Patents by Inventor Kenny-tuan T. Dinh
Kenny-tuan T. Dinh 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: 20100086321Abstract: A xerographic marking engine adjusts a charging actuator value, such as an AC peak-to-peak voltage or an AC peak-to-peak current, based on a determined knee value, VKNEE, of a charge curve for an imaging apparatus photoreceptor within the xerographic marking engine and environmental sensor data. The environmental sensor data may measure environment temperature and environment humidity. In near A-zone [80 degrees Fahrenheit and 80 percent relative humidity] environments, the charging actuator value may be selected to achieve a predetermined photoreceptor wear rate that avoids print quality defects due to lateral charge migration. In other than A-zone environments, the charging actuator value may be selected to minimize the photoreceptor wear rate, while avoiding print quality defects. The described approach allows optimal photoconductor wear to be achieved, in all operational environments, without increasing the risk of print quality defects.Type: ApplicationFiled: October 2, 2008Publication date: April 8, 2010Applicant: XEROX CORPORATIONInventors: Aaron Michael BURRY, Kenny-tuan T. DINH, Karl E. KURZ, Bruce E. THAYER, Michael F. ZONA
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Patent number: 7655373Abstract: A method for forming images including a) depositing an electrostatic latent image on a charge retentive surface of a photoreceptor member having a substrate; a charge transport layer with charge transport materials; and an overcoat layer positioned on the charge transport layer, wherein the overcoat layer includes a crosslinkable alcohol-soluble polyamide; and wherein the overcoat layer further includes additives having titanium dioxide, silica, a crosslinking agent, a deletion control agent, and a charge transport molecule; and b) applying a developer material via a development component to the charge-retentive surface to develop the electrostatic latent image to form a developed image on the charge-retentive surface, wherein the developer material comprises emulsion aggregation toner, and further wherein at least one of the additives create a texturized surface on the charge retentive surface thereby reducing the contact area between the emulsion aggregation toners and the charge retentive surface enablingType: GrantFiled: December 14, 2007Date of Patent: February 2, 2010Assignee: Xerox CorporationInventors: Kenny-Tuan T. Dinh, Timothy J. Fuller, Paul J. DeFeo, Damodar M. Pai, John F. Yanus, Linda L. Ferrarese, Cindy C. Chen
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Publication number: 20100015540Abstract: Embodiments pertain to a novel imaging member, namely, an imaging member or photoreceptor comprising a binderless overcoat layer which exhibits substantially improved electrical performance, such as low residual potential and good electrical cyclic stability. The overcoat layer of the present embodiments is formed from a formulation comprising a small transport molecule, a crosslinking agent, an acid catalyst and a solvent.Type: ApplicationFiled: September 25, 2009Publication date: January 21, 2010Applicant: XEROX CORPORATIONInventors: Kenny-tuan T. Dinh, Edward C. Savage, Marc J. LiVecchi, Robert W. Hedrick, Linda L. Ferrarese, Sherri A. Toates, Stacy J. Kowsz
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Patent number: 7648810Abstract: An electrophotographic imaging member comprises a substrate, an electrophotographic imaging layer and an overcoat layer comprising a cross-linkable polymer and a hole transport material, wherein the overcoat layer provides at least one of solvent resistance and hydrocarbon resistance to the electrophotographic imaging layer.Type: GrantFiled: September 14, 2006Date of Patent: January 19, 2010Assignee: Xerox CorporationInventors: John F. Yanus, Kenny-Tuan T. Dinh, Dale S. Renfer, Nancy L. Belknap, Anthony M. Horgan
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Patent number: 7410738Abstract: A photoconductive imaging member containing an optional supporting substrate, an optional hole blocking layer thereover, a photogenerating layer and a charge transport layer, and wherein the charge transport layer contains a phenol of, for example, the alternative formulasType: GrantFiled: February 10, 2004Date of Patent: August 12, 2008Assignee: Xerox CorporationInventors: John F. Yanus, Kenny-Tuan T. Dinh, Markus R. Silvestri, H. Bruce Goodbrand, M. John Hinckel, Dale S. Renfer, Yuhua Tong
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Patent number: 7384717Abstract: An electrophotographic imaging member includes a substrate, a charge generating layer, a charge transport layer, and an overcoating layer, the overcoating layer including a cured polyester polyol or cured acrylated polyol film forming resin and a charge transport material.Type: GrantFiled: September 26, 2005Date of Patent: June 10, 2008Assignee: Xerox CorporationInventors: Kenny-Tuan T Dinh, John F Yanus, Kendra M Giza, James R Backus, T Edwin Freeman, Markus R Silvestri, Michael L Mehan
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Publication number: 20080131799Abstract: An imaging member including a substrate; thereover a charge generating layer; thereover a first charge transport layer comprising a small molecule charge transport material and a polymeric component selected from the group consisting of polyarylamine polyester, polyacylamine, and mixtures and combinations thereof; and a second charge transport layer disposed over the first charge transport layer, the second charge transport layer comprising a small molecule charge transport material and a binder, wherein the second charge transport layer is free of polyarylamine polyester and polyacylamine.Type: ApplicationFiled: December 1, 2006Publication date: June 5, 2008Inventors: David M. Skinner, John F. Yanus, Markus R. Silvestri, M. John Hinckel, Kenny-Tuan T. Dinh, Susan VanDusen, Satish Parikh, J. Robinson Cowdery-Corvan
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Publication number: 20080070137Abstract: An electrophotographic imaging member comprises a substrate, an electrophotographic imaging layer and an overcoat layer comprising a cross-linkable polymer and a hole transport material, wherein the overcoat layer provides at least one of solvent resistance and hydrocarbon resistance to the electrophotographic imaging layer.Type: ApplicationFiled: September 14, 2006Publication date: March 20, 2008Inventors: John F. Yanus, Kenny-Tuan T. Dinh, Dale S. Renfer, Nancy L. Belknap, Anthony M. Horgan
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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: 7251419Abstract: A method for determining the approximate surface conductivity of a photoreceptor surface. The method involves forming a latent image of a series of lines of different widths on the surface, developing the image, and then printing the image. Based on which lines print, the surface conductivity can be computed once the developability of isolated lines is established through a calibration procedure.Type: GrantFiled: June 22, 2005Date of Patent: July 31, 2007Assignee: Xerox CorporationInventors: Markus R. Silvestri, Kenny-Tuan T. Dinh, Surendar Jeyadev, Gary A. Batt, Dale S. Renfer
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Patent number: 7226712Abstract: A photoconductive imaging member comprised of an optional supporting substrate, a hole blocking layer thereover, a photogenerating layer, and a charge transport layer, and wherein the hole blocking layer is comprised of a pyrolyzed polyacrylonitrile.Type: GrantFiled: December 14, 2005Date of Patent: June 5, 2007Assignee: Xerox CorporationInventors: Timothy J. Fuller, Helen R. Cherniack, Damodar M. Pai, Markus R. Silvestri, John F. Yanus, Yuhua Tong, Dale S. Renfer, Kenny-Tuan T. Dinh, Merlin E. Scharfe, 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: 7144664Abstract: An imaging member having a substrate, a charge transport layer having charge transport materials dispersed therein, and thereover, an overcoat layer comprising a deletion control agent.Type: GrantFiled: February 13, 2004Date of Patent: December 5, 2006Assignee: Xerox CorporationInventors: Timothy J. Fuller, Kenny-Tuan T. Dinh, Markus R. Silvestri, John F. Yanus
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Patent number: 7115345Abstract: According to the present invention is an electrophotographic imaging member which is a thin dual layer structure comprising a top layer of a durable and wear-resistant layer and a bottom layer which is bipolar. The electrophotographic imaging member of the invention may be top surface charge generating or bottom surface charge generating and in either case has an overall negative charging mode of operation.Type: GrantFiled: February 17, 2004Date of Patent: October 3, 2006Assignee: Xerox CorporationInventors: Andronique Ioannidis, Timothy J. Fuller, Nancy L. Belknap, Markus R. Silvestri, Cindy C. Chen, Timothy P. Bender, John F. Graham, James M. Duff, Kenny-Tuan T. Dinh, John F. Yanus, James M. Markovics, Lanhui Zhang
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Patent number: 7074533Abstract: A photoconductive imaging member containing a supporting substrate, a photogenerating layer, a charge transport layer, and in contact with the charge transport layer a layer comprised of a polymer and a yellow dye of the formulaType: GrantFiled: March 25, 2005Date of Patent: July 11, 2006Assignee: Xerox CorporationInventors: Timothy J. Fuller, Satchidanand Mishra, John F. Yanus, Anthony M. Horgan, Geoffrey M. T. Foley, Huoy-Jen Yuh, Dale S. Renfer, Yuhua Tong, Kenny-Tuan T. Dinh, Markus R. Silvestri, John F. Graham
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Patent number: 7049038Abstract: A photoconductive imaging member comprised of an optional supporting substrate, a hole blocking layer thereover, a photogenerating layer, and a charge transport layer, and wherein the hole blocking layer is comprised of a pyrolyzed polyacrylonitrile.Type: GrantFiled: February 9, 2004Date of Patent: May 23, 2006Assignee: Xerox CorporationInventors: Timothy J. Fuller, Helen R. Cherniack, Damodar M. Pai, Markus R. Silvestri, John F. Yanus, Yuhua Tong, Dale S. Renfer, Kenny-Tuan T. Dinh, Merlin E. Scharfe, Steven M. Sterling
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Patent number: 7026083Abstract: An imaging member having a substrate, a charge transport layer having charge transport materials dispersed therein, and an overcoat layer comprising trisamino triphenyl compound.Type: GrantFiled: September 30, 2002Date of Patent: April 11, 2006Assignee: Xerox CorporationInventors: Timothy J. Fuller, Kenny-Tuan T. Dinh, John F. Yanus, Yuhua Tong, Markus R. Silvestri, Dale S. Renfer
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Patent number: 6946227Abstract: A photoconductive imaging member containers of a supporting substrate, and thereover a single layer comprised of a mixture of a photogenerator component, a charge transport component, an electron transport component, and a polymer binder, and wherein the photogenerating component is a pigment.Type: GrantFiled: November 20, 2002Date of Patent: September 20, 2005Assignee: Xerox CorporationInventors: Liang-Bih Lin, Richard H. Nealey, Ah-Mee Hor, James M. Duff, Timothy P. Bender, Andrew R. Melnyk, Andronique Ioannidis, Harold F. Hammond, Linda L. Ferrarese, Cindy C. Chen, James M. Markovics, Kenny-Tuan T. Dinh
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Patent number: 6919154Abstract: A photoconductive imaging member containing a supporting substrate, a photogenerating layer, a charge transport layer, and in contact with the charge transport layer comprised of a polymer and a yellow dye of the formulaType: GrantFiled: May 5, 2003Date of Patent: July 19, 2005Assignee: Xerox CorporationInventors: Timothy J. Fuller, Satchidanand Mishra, John F. Yanus, Anthony M. Horgan, Geoffrey M. T. Foley, Huoy-Jen Yuh, Dale S. Renfer, Yuhua Tong, Kenny-Tuan T. Dinh, Markus R. Silvestri, John F. Graham
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Patent number: 6906125Abstract: A composition having a trisamino triphenyl compound and a layer composition having a trisamino triphenyl compound and a polyamide.Type: GrantFiled: September 30, 2002Date of Patent: June 14, 2005Assignee: Xerox CorporationInventors: Timothy J. Fuller, Kenny-Tuan T. Dinh, John F. Yanus, Yuhua Tong, Markus R. Silvestri, Dale S. Renfer