And Specified Charge Generator Layer Patents (Class 430/59.1)
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Patent number: 8076047Abstract: An electrophotographic photoreceptor comprising at least a photosensitive layer formed by laminating a charge generation layer containing a charge generation material and a charge transport layer containing a charge transport material in this order, on a conductive support, wherein the charge generation layer contains an oxotitanylphthalocyanine as the charge generation material and metal oxide microparticles, and the electrophotographic photoreceptor has photosensitive properties in light source of wavelength range from 360 to 420 nm.Type: GrantFiled: March 23, 2009Date of Patent: December 13, 2011Assignee: Sharp Kabushiki KaishaInventors: Kotaro Fukushima, Kohichi Toriyama
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Patent number: 8067138Abstract: A photoconductor that includes, for example, a supporting substrate, a photogenerating layer, and a charge transport layer, and wherein at least one of the charge transport layer and the photogenerating layer contains a pyrrole.Type: GrantFiled: February 27, 2009Date of Patent: November 29, 2011Assignee: Xerox CorporationInventor: Jin Wu
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Patent number: 8057973Abstract: A photoconductor that includes a first layer, a supporting substrate thereover, a photogenerating layer, and at least one charge transport layer of at least one charge transport component, and wherein the first layer is in contact with the supporting substrate on the reverse side thereof, and which first layer is comprised of a nano diamond component.Type: GrantFiled: January 27, 2009Date of Patent: November 15, 2011Assignee: Xerox CorporationInventors: Jin Wu, Edward F Grabowski, Lin Ma, Lanhui Zhang
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Patent number: 8053150Abstract: A photoconductor that includes, for example, a supporting substrate, a photogenerating layer, and a thiobis(thioformate) containing charge transport layer; a thiobis(thioformate) containing photogenerating layer, or where both at least one charge transport layer and the photogenerating layer includes, in addition to other components, a thiobis(thioformate).Type: GrantFiled: September 17, 2008Date of Patent: November 8, 2011Assignee: Xerox CorporationInventor: Jin Wu
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Patent number: 8053151Abstract: 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 photogenerating layer contains a suitable phosphonate.Type: GrantFiled: June 30, 2008Date of Patent: November 8, 2011Assignee: Xerox CorporationInventors: Jin Wu, Markus R Silvestri, J. Robinson Cowdery-Corvan, David M Skinner, Jean D Van Epps, Jr.
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Publication number: 20110269064Abstract: A photoconductor that includes, for example, a supporting substrate, an undercoat layer thereover wherein the undercoat layer contains a metal oxide a phenolic resin and a dendritic polyester polyol; a photogenerating layer; and at least one charge transport layer.Type: ApplicationFiled: April 28, 2010Publication date: November 3, 2011Applicant: XEROX CORPORATIONInventor: Jin Wu
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Publication number: 20110269063Abstract: A photoconductor that includes, for example, a substrate; an undercoat layer thereover wherein the undercoat layer contains a metal oxide dispersed in a mixture of a phenolic resin and a glycoluril resin; a photogenerating layer; and at least one charge transport layer.Type: ApplicationFiled: April 28, 2010Publication date: November 3, 2011Applicant: XEROX CORPORATIONInventor: Jin Wu
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Patent number: 8034519Abstract: Disclosed is an electrophotographic photoreceptor comprising on or over an electrically conductive support a photosensitive layer containing a pyranthrone compound represented by the following formula and the pyranthrone compound has a crystal structure exhibiting a CuK? X-ray diffraction spectrum having peaks at angles (2?±0.2°) of 12.3°, 20.5°, 25.3° and 28.3°.Type: GrantFiled: June 16, 2008Date of Patent: October 11, 2011Assignee: Konica Minolta Business Technologies, Inc.Inventors: Tomoko Sakimura, Toyoko Shibata, Shinichi Hamaguchi
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Patent number: 8012657Abstract: 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 photogenerating layer contains a phenol polysulfide.Type: GrantFiled: May 30, 2008Date of Patent: September 6, 2011Assignee: Xerox CorporationInventor: Jin Wu
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Publication number: 20110207042Abstract: A photoconductor that includes, for example, a substrate, an undercoat layer thereover wherein the undercoat layer contains a metal oxide dispersed in a mixture of a urea formaldehyde resin and a phenolic formaldehyde resin; a photogenerating layer; and at least one charge transport layer.Type: ApplicationFiled: February 25, 2010Publication date: August 25, 2011Applicant: XEROX CORPORATIONInventor: Jin Wu
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Patent number: 8003289Abstract: 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 at least one of the photogenerating layer and charge transport layer contains a ferrocene.Type: GrantFiled: May 30, 2008Date of Patent: August 23, 2011Assignee: Xerox CorporationInventor: Jin Wu
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Patent number: 7989129Abstract: A photoconductor that includes, for example, a supporting substrate, a photogenerating layer, and at least one charge transport layer that contains at least one charge transport component, and where the photogenerating layer contains a hydroxyquinoline.Type: GrantFiled: March 31, 2008Date of Patent: August 2, 2011Assignee: Xerox CorporationInventors: Jin Wu, Dennis J Prosser, J. Robinson Cowdery-Corvan, Raymond K Crandall, David M Skinner, Jean D Van Epps, Jr.
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Patent number: 7989128Abstract: 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 photogenerating layer contains a urea resin.Type: GrantFiled: March 31, 2008Date of Patent: August 2, 2011Assignee: Xerox CorporationInventors: Daniel V Levy, Liang-Bih Lin, Jin Wu
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Patent number: 7981578Abstract: A photoconductor comprising a supporting substrate, a photogenerating layer, and at least one charge transport layer comprised of at least one charge transport component, and wherein the photogenerating layer contains an aminoquinoline.Type: GrantFiled: March 31, 2008Date of Patent: July 19, 2011Assignee: Xerox CorporationInventor: Jin Wu
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Patent number: 7968263Abstract: 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 photogenerating layer contains an amine phosphate.Type: GrantFiled: May 30, 2008Date of Patent: June 28, 2011Assignee: Xerox CorporationInventor: Jin Wu
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Patent number: 7968261Abstract: A photoconductor that includes, for example, a supporting substrate, a photogenerating layer, and a charge transport layer, and wherein at least one of the charge transport layer and the photogenerating layer contains a zirconocene.Type: GrantFiled: May 30, 2008Date of Patent: June 28, 2011Assignee: Xerox CorporationInventor: Jin Wu
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Publication number: 20110151365Abstract: A photoconductor that includes a supporting substrate, an optional ground plane layer, an optional hole blocking layer, a photogenerating layer, and at least one charge transport layer, and where the charge transport layer contains a polyalkylene glycol benzoate.Type: ApplicationFiled: December 22, 2009Publication date: June 23, 2011Applicant: XEROX CORPORATIONInventors: Jin Wu, Sherri A Toates, John J Wilbert, Emily K Redman
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Patent number: 7960079Abstract: 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 at least one of the photogenerating layer and charge transport layer contains a phenazine.Type: GrantFiled: April 30, 2008Date of Patent: June 14, 2011Assignee: Xerox CorporationInventor: Jin Wu
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Patent number: 7951515Abstract: A photoconductor that includes, for example, a supporting substrate, a photogenerating layer, and at least one charge transport layer, and where the photogenerating layer contains at least one photogenerating component, and a mixture of an ester thiol and a poly(vinyl halide) copolymer.Type: GrantFiled: November 24, 2008Date of Patent: May 31, 2011Assignee: Xerox CorporationInventors: Jin Wu, Marc J Livecchi, Linda L Ferrarese, John J Wilbert
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Patent number: 7939230Abstract: The presently disclosed embodiments are directed generally to an improved electrophotographic imaging member in which the overcoat layer incorporates core-shell fluorinated nano- or micro-particles encapsulated in a melamine shell to reduce torque and cleaning failures during the photoreceptor cleaning process.Type: GrantFiled: September 3, 2009Date of Patent: May 10, 2011Assignee: Xerox CorporationInventors: Woo Soo Kim, Nan-Xing Hu, Jennifer A. Coggan, Yvan Gagnon
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Patent number: 7935466Abstract: A photoconductor that includes a supporting substrate, a photogenerating layer, and at least one charge transport layer that contains at least one charge transport component, and where the photogenerating layer contains a benzothiazolesulfenimide additive.Type: GrantFiled: March 31, 2008Date of Patent: May 3, 2011Assignee: Xerox CorporationInventors: Liang-Bih Lin, Daniel V Levy, Dale S Renfer, Markus R Silvestri
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Publication number: 20110091799Abstract: In an electrophotographic photoreceptor having a photosensitive layer on an electroconductive substrate, the photosensitive layer is a positive-charging laminate comprising at least a charge transport layer and a charge generating layer laminated in that order, with the charge generating layer containing at least a resin binder, a charge generating agent, a space filler and an electron transport agent, while the charge transport layer contains at least, as a resin binder, polystyrene and a hole transport agent, and mineral oil of the charge transport layer is in an amount of 1% by mass or less of an amount of polystyrene. Thus, a highly durable and economic positive-charging multilayer electrophotographic photoreceptor and a manufacturing method therefor may be achieved.Type: ApplicationFiled: May 28, 2009Publication date: April 21, 2011Inventors: Yoichi Nakamura, Seizo Kitagawa, Hiroshi Emori, Yasushi Tanaka, Hiroyuki Ichiyanagi
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Patent number: 7927774Abstract: An object of the present invention is to provide an electrophotographic photosensitive member having high durability and hardly causing sensitivity decrease even if short wavelength light, particularly light having a wavelength of 380 to 450 nm is used as exposure light, and a process cartridge and an electrophotographic apparatus having the electrophotographic photosensitive member. The present invention includes an electrophotographic photosensitive member comprising a support and a photosensitive layer which is provided on the support and contains a charge generation material and a charge transport material, characterized in that the surface layer of the electrophotographic photosensitive member contains an aliphatic dicarboxylic acid polyester resin with a weight average molecular weight of 80,000 or more having a specific repeating structural unit, and a process cartridge and an electrophotographic apparatus having the electrophotographic photosensitive member.Type: GrantFiled: September 8, 2009Date of Patent: April 19, 2011Assignee: Canon Kabushiki KaishaInventors: Harunobu Ogaki, Takakazu Tanaka, Kenichi Kaku, Akira Yoshida
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Patent number: 7914962Abstract: A photoconductor comprising a supporting substrate, a photogenerating layer, and at least one charge transport layer comprised of at least one charge transport component, and wherein said photogenerating layer contains a light stabilizer.Type: GrantFiled: August 31, 2007Date of Patent: March 29, 2011Assignee: Xerox CorporationInventor: Jin Wu
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Patent number: 7897311Abstract: 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 photogenerating layer contains a phenothiazine.Type: GrantFiled: April 30, 2008Date of Patent: March 1, 2011Assignee: XEROX CorporationInventor: Jin Wu
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Publication number: 20110027708Abstract: A photoconductor that includes, for example, a substrate, an optional ground plane layer, an undercoat layer thereover wherein the undercoat layer contains an aminosilane and a urea resin mixture; a photogenerating layer; and at least one charge transport layer.Type: ApplicationFiled: July 29, 2009Publication date: February 3, 2011Applicant: XEROX CORPORATIONInventor: Jin Wu
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Patent number: 7879518Abstract: Disclosed is a photoreceptor including a substrate, a charge generating layer, and a charge transport layer having a tertiary aryl amine charge transport molecule represented by the following general formula in which Ar1, Ar2, Ar3, Ar4 and Ar5 each independently represents a substituted or unsubstituted aryl group, or Ar5 independently represents a substituted or unsubstituted arylene group, and k represents 0 or 1, and in which at least two of Ar1, Ar2, Ar3 and Ar4 includes a hydroxymethyl group or an alkoxymethyl group having from 1 to about 6 carbon atoms, having an oxidation potential of from about 0.75 V to about 1.0 V as measured vs. Ag/AgCl in 0.1 M tetra-n-butylammonium perchlorate in dichloromethane, and an antioxidant capable of reacting with the charge transport molecule. Disclose is also a process for forming the photoreceptors described herein and a method of forming an image with the photoreceptors described herein.Type: GrantFiled: November 20, 2007Date of Patent: February 1, 2011Assignee: Xerox CorporationInventors: Jennifer A. Coggan, Gregory McGuire, Nan-Xing Hu, Ah-Mee Hor
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Patent number: 7871746Abstract: A photoconductor that includes, for example, a supporting substrate, a thiophthalimide containing photogenerating layer, and at least one charge transport layer.Type: GrantFiled: April 30, 2008Date of Patent: January 18, 2011Assignee: Xerox CorporationInventor: Jin Wu
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Publication number: 20100330478Abstract: A photoconductor that includes, for example, a supporting substrate, a photogenerating layer, and a charge transport layer, and wherein the charge transport layer contains a polysulfone.Type: ApplicationFiled: June 29, 2009Publication date: December 30, 2010Applicant: XEROX CORPORATIONInventor: Jin Wu
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Patent number: 7851112Abstract: A photoconductor containing an optional supporting substrate, a thiophosphate containing photogenerating layer, and a charge transport layer which includes a polyhedral oligomeric silsesquioxane (POSS)-containing material and an optional thiophosphate.Type: GrantFiled: November 28, 2006Date of Patent: December 14, 2010Assignee: Xerox CorporationInventors: Jin Wu, Kenny-Tuan Dinh, Kathleen M. Carmichael, Michael S. Roetker, Liang-Bih Lin
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Publication number: 20100279216Abstract: A photoconductor that includes, for example, a supporting substrate, a photogenerating layer, and a charge transport layer, and wherein the photogenerating layer contains a vulcanized fatty ester.Type: ApplicationFiled: April 29, 2009Publication date: November 4, 2010Applicant: XEROX CORPORATIONInventor: Jin Wu
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Patent number: 7811728Abstract: 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: GrantFiled: December 1, 2006Date of Patent: October 12, 2010Assignee: Xerox CorporationInventors: 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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Patent number: 7799497Abstract: A photoconductor containing an optional supporting substrate, a silanol containing photogenerating layer, at least one charge transport layer, and a top overcoating layer in contact with and contiguous to the charge transport layer.Type: GrantFiled: November 7, 2006Date of Patent: September 21, 2010Assignee: Xerox CorporationInventors: John F Yanus, Jin Wu, Kenny-Tuan Dinh, Michael A. Morgan, Anthony M. Horgan
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Publication number: 20100221647Abstract: A photoconductor that includes, for example, a supporting substrate, a photogenerating layer, and a charge transport layer, and wherein at least one of the charge transport layer and the photogenerating layer contains a pyrrole.Type: ApplicationFiled: February 27, 2009Publication date: September 2, 2010Applicant: Xerox CorporationInventor: Jin Wu
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Publication number: 20100221648Abstract: A photoconductor that includes a supporting substrate, an optional ground plane layer, an optional hole blocking layer, a photogenerating layer, and at least one charge transport layer, and where the charge transport layer contains a zinc thione.Type: ApplicationFiled: February 27, 2009Publication date: September 2, 2010Applicant: XEROX CORPORATIONInventors: Jin Wu, Markus R. Silvestri, Robert J. Meyer, Dale S. Renfer
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Publication number: 20100221650Abstract: A photoconductor that includes, for example, a supporting substrate, a photogenerating layer, and a charge transport layer, and where the photogenerating layer contains a carbazole.Type: ApplicationFiled: February 27, 2009Publication date: September 2, 2010Applicant: XEROX CORPORATIONInventor: Jin Wu
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Patent number: 7785756Abstract: A photoconductor containing an optional supporting substrate, a containing photogenerating layer, at least one thiophosphate containing charge transport layer, and a top overcoating crosslinked polymer layer in contact with and contiguous to the charge transport layer.Type: GrantFiled: November 7, 2006Date of Patent: August 31, 2010Assignee: Xerox CorporationInventors: John F. Yanus, Jin Wu, Kenny-Tuan Dinh, Michael A. Morgan, Anthony M. Horgan, Kathleen M. Carmichael
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Patent number: 7785757Abstract: A photoconductor containing a thiophosphate photogenerating layer, and at least one charge transport layer, and a top polymeric overcoating layer in contact with and contiguous to a charge transport layer.Type: GrantFiled: November 7, 2006Date of Patent: August 31, 2010Assignee: Xerox CorporationInventors: John F Yanus, Jin Wu, Kenny-Tuan Dinh, Michael A. Morgan, Anthony M. Horgan, Kathleen M. Carmichael
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Patent number: 7785758Abstract: A photoconductor comprising a supporting substrate, a photogenerating layer, and at least one charge transport layer comprised of at least one charge transport component, and where the photogenerating layer contains a triazole.Type: GrantFiled: August 31, 2007Date of Patent: August 31, 2010Assignee: Xerox CorporationInventor: Jin Wu
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Patent number: 7776498Abstract: A photoconductor containing a supporting substrate, a photogenerating layer, and at least one charge transport layer; and wherein the photogenerating layer is comprised of at least one photogenerating pigment and a resin binder that is substantially insoluble in an alkylene halide like methylene chloride.Type: GrantFiled: November 7, 2006Date of Patent: August 17, 2010Assignee: Xerox CorporationInventors: Jin Wu, Satchidanand Mishra, Geoffrey M T. Foley, Anthony M. Horgan, Yonn K. Rasmussen, Michael A. Morgan, Kathleen M. Carmichael, Edward F. Grabowski, Liang-Bih Lin
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Patent number: 7745083Abstract: An electrophotographic photosensitive member has a support, a charge generation layer containing a charge-generating material and a binder resin, provided on the support, and a hole transport layer containing a hole-transporting material, provided on the charge generation layer. The charge generation layer contains a phenanthrene compound having a structure represented by the following formula (2): wherein Z201 and Z202 each independently represent an oxygen atom, a ?C(CN)2 group or a ?N-Ph group; R201 represents a hydrogen atom, a halogen atom, a nitro group, a substituted or unsubstituted alkyl group or a substituted or unsubstituted alkoxy group; and R202 represents a halogen-atom-substituted alkyl group.Type: GrantFiled: August 10, 2009Date of Patent: June 29, 2010Assignee: Canon Kabushiki KaishaInventors: Hideaki Nagasaka, Kunihiko Sekido, Michiyo Sekiya, Nobumichi Miki, Yosuke Morikawa
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Patent number: 7727689Abstract: A photoconductor containing an optional supporting substrate, a perylene photogenerating layer, and at least one silanol containing charge transport layer.Type: GrantFiled: August 30, 2006Date of Patent: June 1, 2010Assignee: Xerox CorporationInventors: Jin Wu, Nancy L. Belknap, Liang-Bih Lin
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Patent number: 7718336Abstract: A photoconductor containing a supporting substrate, a photogenerating layer; and at least one charge transport layer where the photogenerating layer contains a photogenerating pigment and a chelating additive or agent of, for example, a ?-diketone, a ketoester, a hydroxyl carboxylic acid, a hydroxyl carboxylic acid ester, a keto alcohol, or an amino alcohol.Type: GrantFiled: March 6, 2007Date of Patent: May 18, 2010Assignee: Xerox CorporationInventors: Jin Wu, Kent J. Evans, Dennis J. Prosser, Liang-Bih Lin, Raymond K. Crandall
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Patent number: 7718332Abstract: A photoconductor containing an optional supporting substrate; a photogenerating layer comprised of a chelating agent and a titanyl phthalocyanine; and at least one charge transport layer comprised of at least one charge transport component, and wherein a silanol is present in at least one of said photogenerating layer and charge transport layer.Type: GrantFiled: August 30, 2006Date of Patent: May 18, 2010Assignee: Xerox CorporationInventors: Jin Wu, Michael A. Morgan, Anthony M. Horgan, Liang-Bih Lin
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Patent number: 7700250Abstract: A photoconductor containing an optional supporting substrate, a photogenerating layer thereover, and at least one charge transport layer, and wherein the photogenerating layer contains a chelating agent, and a Type V titanyl phthalocyanine prepared, for example, by dissolving a Type I titanyl phthalocyanine in a solution comprising a trihaloacetic acid and an alkylene halide; adding the mixture comprising the dissolved Type I titanyl phthalocyanine to a solution comprising an alcohol and an alkylene halide thereby precipitating a Type Y titanyl phthalocyanine; and treating the Type Y titanyl phthalocyanine with a monohalobenzene.Type: GrantFiled: August 30, 2006Date of Patent: April 20, 2010Assignee: Xerox CorporationInventors: Jin Wu, John S. Chambers, Francisco J. Lopez, Daniel V. Levy, Liang-Bih Lin
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Publication number: 20100068637Abstract: A photoconductor that includes, for example, a supporting substrate, a photogenerating layer, and a thiobis(thioformate) containing charge transport layer; a thiobis(thioformate) containing photogenerating layer, or where both at least one charge transport layer and the photogenerating layer includes, in addition to other components, a thiobis(thioformate).Type: ApplicationFiled: September 17, 2008Publication date: March 18, 2010Applicant: XEROX CORPORATIONInventor: Jin Wu
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Publication number: 20100068638Abstract: A photoconductor that includes, for example, a supporting substrate, a photogenerating layer, a zinc dithiol containing charge transport layer, a zinc dithiol containing photogenerating layer, or where the charge transport layer and the photogenerating layer both include a zinc dithiol.Type: ApplicationFiled: September 17, 2008Publication date: March 18, 2010Applicant: XEROX CORPORATIONInventor: Jin Wu
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Patent number: 7670736Abstract: A photoconductor containing a first layer, a supporting substrate thereover, a photogenerating layer, and at least one charge transport layer comprised of at least one charge transport component, and wherein the first layer is in contact with the supporting substrate on the reverse side thereof, and which layer contains a semi-penetrating polymer network formed from crosslinking a suitable fluoropolymer, and within which network structure is penetrated with a polycarbonate.Type: GrantFiled: March 29, 2007Date of Patent: March 2, 2010Assignee: Xerox CorporationInventors: Huoy-Jen Yuh, Robert C U Yu, Yuhua Tong, David M. Skinner
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Patent number: 7670734Abstract: A photoconductor containing an optional supporting substrate, a photogenerating layer comprised of a chelating agent and a titanyl phthalocyanine; and at least one charge transport layer comprised of at least one charge transport component; and wherein a silanol is present in at least one of the photogenerating layer and charge transport layer, and wherein said at least one charge transport component is comprised of wherein X and Y are independently a suitable hydrocarbon, a halogen, or mixtures thereof.Type: GrantFiled: August 30, 2006Date of Patent: March 2, 2010Assignee: Xerox CorporationInventors: Jin Wu, John F. Yanus, Anthony M. Horgan, Liang-Bih Lin
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Patent number: 7670738Abstract: A photoconductor comprising a supporting substrate, a photogenerating layer, and at least one charge transport layer comprised of at least one charge transport component, and where the photogenerating layer contains a boron containing compound.Type: GrantFiled: August 31, 2007Date of Patent: March 2, 2010Assignee: Xerox CorporationInventor: Jin Wu