And Specified Charge Generator Layer Patents (Class 430/59.1)
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Patent number: 7374855Abstract: Methods for texturing the surface of photoreceptors are provided.Type: GrantFiled: May 10, 2005Date of Patent: May 20, 2008Assignee: Xerox CorporationInventors: William H. Wayman, Douglas A. Lundy, John S. Facci, Moritz Wagner, Michael J. Turan, Charles D. Deichmiller
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Publication number: 20080107984Abstract: 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: ApplicationFiled: November 7, 2006Publication date: May 8, 2008Inventors: John F. Yanus, Jin Wu, Kenny-Tuan Dinh, Michael A. Morgan, Anthony M. Horgan, Kathleen M. Carmichael
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Publication number: 20080107985Abstract: 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: ApplicationFiled: November 7, 2006Publication date: May 8, 2008Inventors: John F. Yanus, Jin Wu, Kenny-Tuan Dinh, Michael A. Morgan, Anthony M. Horgan
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Patent number: 7341810Abstract: An electrophotographic photoreceptor comprising a conductive substrate, an undercoat layer located overlying the conductive substrate, a photosensitive layer located overlying the undercoat layer. The photosensitive layer has a charge generation layer located overlying the undercoat layer and a charge transport layer located overlying the charge generation layer. In addition, when the charge generation layer is irradiated in the absence of the charge transport layer with light in a range of from 360 nm to 740 nm having the highest reflectivity for the charge generation layer, the charge generation layer has a reflectivity of from 15 to 21%.Type: GrantFiled: September 17, 2004Date of Patent: March 11, 2008Assignee: Ricoh Company, Ltd.Inventors: Eiji Kurimoto, Yasuyuki Yamashita
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Publication number: 20080057421Abstract: A photoconductor containing an optional supporting substrate, a perylene photogenerating layer, and at least one silanol containing charge transport layer.Type: ApplicationFiled: August 30, 2006Publication date: March 6, 2008Inventors: Jin Wu, Nancy L. Belknap, Liang-Bih Lin
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Publication number: 20080057425Abstract: A photoconductor containing an optional supporting substrate, a perylene silanol photogenerating layer, and at least one charge transport layer.Type: ApplicationFiled: August 30, 2006Publication date: March 6, 2008Inventors: Jin Wu, Nancy L. Belknap, Liang-Bih Lin
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Patent number: 7333752Abstract: An electrophotographic apparatus is disclosed using an electrophotographic photosensitive member which employs light with a short wavelength (380 nm to 500 nm) as image exposure light and is good in photoelectric conversion efficiency on the whole at that wavelength. The electrophotographic photosensitive member is composed of a reflecting layer, a charge generation layer and a charge transport layer formed on a support. The total reflectance and specular reflectance of the reflecting layer are 30% or more (with respect to a standard white board) and less than 15%, respectively, at that short-wavelength light. The absorbance of the charge generation layer is 1.0 or less at that short-wavelength light.Type: GrantFiled: July 7, 2006Date of Patent: February 19, 2008Assignee: Canon Kabushiki KaishaInventors: Masataka Kawahara, Masato Tanaka, Atsushi Fujii, Yuka Ishizuka, Masaki Nonaka
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Publication number: 20080038652Abstract: An electrophotographic imaging member includes a substrate, a photogenerating layer, and an optional overcoating layer, where the photogenerating layer includes a self-assembled carbon nanotube material having pendant charge transport materials.Type: ApplicationFiled: August 8, 2006Publication date: February 14, 2008Applicant: XEROX CORPORATIONInventor: Timothy P. BENDER
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Publication number: 20080038650Abstract: An electrophotographic imaging member includes a substrate, a photogenerating layer, and an optional overcoating layer, where the photogenerating layer includes a chemically functionalized carbon nanotube material.Type: ApplicationFiled: August 8, 2006Publication date: February 14, 2008Applicant: XEROX CORPORATIONInventors: Timothy P. BENDER, James D. MAYO
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Publication number: 20080038648Abstract: An electrophotographic imaging member includes a substrate, a photogenerating layer, and an optional overcoating layer, where the photogenerating layer includes a multi-block polymeric charge transport material at least partially embedded within a carbon nanotube material.Type: ApplicationFiled: August 8, 2006Publication date: February 14, 2008Applicant: XEROX CORPORATIONInventors: Timothy P. BENDER, Nan-Xing HU
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Publication number: 20080038651Abstract: An electrophotographic imaging member includes a substrate, an optional intermediate (undercoat) layer, a photogenerating layer, which can be a single layer of include separate charge generating and charge transport layers, and an optional overcoating layer, wherein the photogenerating layer or a sub-layer thereof include a carbon nanotube material.Type: ApplicationFiled: August 8, 2006Publication date: February 14, 2008Applicant: XEROX CORPORATIONInventors: Liang-Bih LIN, Jin WU, Daniel V. LEVY, Cindy C. CHEN, Richard H. NEALEY, Kenny-Tuan DINH
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Publication number: 20080020306Abstract: An electrophotographic imaging member includes a substrate, a charge generating layer, and a charge transport layer, where the charge generating layer includes a photogenerating material, a film-forming polymer binder, and a glycol compound having two hydroxyl groups bonded to adjoining carbon atoms in the carbon chain.Type: ApplicationFiled: July 19, 2006Publication date: January 24, 2008Applicant: XEROX CORPORATIONInventors: Cuong VONG, Ah-Mee HOR
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Publication number: 20080020307Abstract: An electrophotographic imaging member includes a substrate, a charge generating layer, and a charge transport layer, where the charge generating layer includes a photogenerating material and a hydroxyl group-containing polymeric compound.Type: ApplicationFiled: July 19, 2006Publication date: January 24, 2008Applicant: XEROX CORPORATIONInventors: Cuong VONG, Ah-Mee HOR
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Publication number: 20080014519Abstract: An organic photoreceptor and an electrophotographic image forming apparatus including the organic photoreceptor are provided. The organic photoreceptor has the same advantage as a conventional laminated photoreceptor but improved electric properties such as higher photosensitivity and lower exposure potential.Type: ApplicationFiled: November 30, 2006Publication date: January 17, 2008Inventors: Ji-young Lee, Beom-jun Kim
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Publication number: 20080008951Abstract: An imaging member including a substrate; an optional undercoat layer; a charge generating layer comprising photoconductive pigment and a pigment sensitizing dopant having an electron acceptor molecule; and a charge transport layer.Type: ApplicationFiled: July 6, 2006Publication date: January 10, 2008Inventors: Jin Wu, John J. Wilbert, Linda L. Ferrarese, Liang-bih Lin
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Publication number: 20080008948Abstract: An imaging member including a substrate; thereover a charge generation layer comprising a thiophosphate; and at least one charge transport layer positioned on the charge generation layer.Type: ApplicationFiled: July 6, 2006Publication date: January 10, 2008Inventors: Jin Wu, Geoffrey M.T. Foley, Satchidanand Mishra, Liang-bih Lin, Anthony M. Horgan, Yonn K. Rasmussen, Kathleen M. Carmichael, Edward F. Grabowski, Markus Rudolf Silvestri
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Publication number: 20080008949Abstract: An imaging member including a substrate; an optional undercoat layer situated on the substrate; an optional adhesive layer situated on the substrate or on the optional blocking layer; a charge generation layer situated on the substrate, on the optional undercoat layer, or on the adhesive layer, the charge generation layer comprising a rylene pigment, a pigment sensitizing dopant having an electron acceptor molecule and an optional binder component; and at least one charge transport layer situated on the charge generation layer.Type: ApplicationFiled: July 6, 2006Publication date: January 10, 2008Inventors: Jin Wu, Linda L. Ferrarese, John J. Wilbert, Liang-bih Lin
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Publication number: 20070298341Abstract: A photoconductor containing an optional supporting substrate, a photogenerating layer, and at least one charge transport layer, and wherein the photogenerating layer contains a 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: ApplicationFiled: June 22, 2006Publication date: December 27, 2007Inventors: Jin Wu, Satchidanand Mishra, Kathleen M. Carmichael, Anthony M. Horgan, Kent J. Evans, Geoffrey M.T. Foley, Yonn K. Rasmussen, Edward F. Grabowski, Liang-Bih Lin
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Publication number: 20070292793Abstract: An imaging member containing an optional supporting substrate, a photogenerating layer and at least one charge transport layer, and wherein said photogenerating layer contains at least one thiophosphate.Type: ApplicationFiled: June 15, 2006Publication date: December 20, 2007Inventors: Jin Wu, Satchidanand Mishra, Kent J. Evans, J. Robinson Cowdery-Corvan, Anthony M. Horgan, Geoffrey M T. Foley, Kathleen M. Carmichael, Liang-Bih Lin
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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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Publication number: 20070281226Abstract: An electrophotographic imaging member includes at least one layer including a hole transport material and a strong electron acceptor material, such as an electro photographic imaging member including a substrate, a charge generating layer, a hole transport layer, and an optional overcoating layer, wherein at least one layer of the electrophotographic imaging member comprises a strong electron acceptor material.Type: ApplicationFiled: June 5, 2006Publication date: December 6, 2007Applicant: XEROX CORPORATIONInventors: Hany AZIZ, Gregory McGuire, Johann Junginger
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Patent number: 7297458Abstract: A photoconductive member containing a supporting substrate, a photogenerating layer, and a charge transport layer and wherein the photogenerating layer comprises a photogenerating component, and an electron transport component.Type: GrantFiled: June 29, 2004Date of Patent: November 20, 2007Assignee: Xerox CorporationInventors: Nancy L. Belknap, Andronique Ioannidis, Cindy C. Chen, Lanhui Zhang, James M. Duff, John F. Graham, Timothy P. Bender
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Patent number: 7270927Abstract: A non-halogenated binder material, such as for an electrophotographic imaging member binder, includes a copolymer of vinyl acetate and vinyl acid.Type: GrantFiled: November 15, 2004Date of Patent: September 18, 2007Assignee: Xerox CorporationInventors: Jin Wu, Francisco Lopez, Lanhui Zhang, Yuhua Tong, Liang-bih Lin, John S Chambers, Cindy Chen
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Patent number: 7229728Abstract: A positively-charged electrophotographic organic photoreceptor includes an electrically conductive support, and a charge transport layer and a charge generating layer sequentially stacked on the electrically conductive support. The charge generating layer is formed by coating a charge generating layer forming composition that includes a fluorene compound, a charge generating material, a binder resin and an organic solvent on the charge transport layer, and drying. The organic photoreceptor has high sensitivity, while suppressing contamination of a charge generating layer during coating, and thicknesses of a charge transport layer and a charge generating layer may be adjusted. Also, the electrostatic properties of the organic photoreceptor, including charge potential and exposure potential, may be easily adjusted.Type: GrantFiled: November 20, 2003Date of Patent: June 12, 2007Assignee: Samsung Electronics Co., Ltd.Inventors: Nam-jeong Lee, Hae-ree Joo, Kyong-yol Yon
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Patent number: 7201859Abstract: The present invention discloses a hole transport layer of an organic EL display, comprising: a material including one of a PEDOT which is a mixture of a poly (3,4)-ethylenedioxythiophene and a polystyrenesulfonate, a PANI which is a mixture of a polyaniline and a polystyrenesulfonate, and an aromatic amine derivative; and an organic compound derivative having the general structure, R1R2MR3R4, where “M” denotes one metal selected from a group consisting of Ti, Pt and one metal among elements belonging to groups 3A and 4A of periods 3 to 5.Type: GrantFiled: June 18, 2002Date of Patent: April 10, 2007Assignee: Samsung SDI Co., Ltd.Inventors: Jun-Yeob Lee, Young-Sook Choi, Michael Redecker, Kerstin Nolte
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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: 7129012Abstract: An electrophotographic photosensitive member which has VA, VB, and d satisfying an expression (|?600?VA|?|?600?VB|)/d=0.13 and VC satisfying an expression ?5=?(?450?VC)=2 provides an excellent suppressing effect on ghost images and hardly causes a ghost phenomenon even when it is mounted on a color electrophotographic apparatus or an electrophotographic apparatus having no electrostatic removal device. The invention also relates to a process cartridge and an electrophotographic apparatus each having such an electrophotographic photosensitive member.Type: GrantFiled: June 23, 2005Date of Patent: October 31, 2006Assignee: Canon Kabushiki KaishaInventors: Michiyo Sekiya, Hideaki Nagasaka, Kunihiko Sekido, Nobumichi Miki, Yosuke Morikawa
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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: 7115346Abstract: A multi-layered electrophotographic positively charged organic photoconductor includes a conductive substrate, a charge transport layer formed on the conductive substrate, and a charge generating layer formed on the charge transport layer. A composition to form the charge transport layer includes at least one hole transport material, a binder resin and an organic solvent, and a composition to form the charge generating layer includes a charge generating material, a binder resin, an organic solvent and a hole transport material. An organic photoconductor has improved static electrical properties by controlling interfacial conditions of the charge transport layer and the charge generating layer. The charge generating layer may be readily coated on the charge transport layer. In addition, the organic photoconductor has excellent electric properties such as an improved sensitivity and a low discharge voltage.Type: GrantFiled: October 1, 2003Date of Patent: October 3, 2006Assignee: Samsung Electronics Co., LTDInventors: Saburo Yokota, Kyung-yol Yon, Hwan-koo Lee, Hae-ree Joo, Boem-jun Kim, Nam-jeong Lee
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Patent number: 7037631Abstract: A photoconductive imaging member including a supporting substrate, a hole blocking layer thereover, a crosslinked photogenerating layer and a charge transport layer, and wherein the photogenerating layer includes a photogenerating component and a vinyl chloride, allyl glycidyl ether, hydroxy containing polymer.Type: GrantFiled: February 19, 2003Date of Patent: May 2, 2006Assignee: Xerox CorporationInventors: Jin Wu, Liang-Bih Lin, John S. Chambers
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Patent number: 7029811Abstract: An electrophotographic photoreceptor is disclosed which includes a conductive resin substrate and a resin layer. The resin layer includes a binding resin and is formed on the conductive resin substrate. The difference between the solubility parameter of the conductive resin substrate and the solubility parameter of the resin layer of the photoreceptor is 2.5 (J/cm3)1/2 or less.Type: GrantFiled: December 30, 2002Date of Patent: April 18, 2006Assignee: Kyocera Mita CorporationInventors: Jun Azuma, Eiichi Miyamoto
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Patent number: 6969573Abstract: An electrostatographic article including: a substrate; a charge generator layer overcoated on the substrate and which layer is sensitive to blue light; and a charge transport layer overcoated on the charge generator layer and which charge transport layer is transparent to blue light.Type: GrantFiled: June 28, 2002Date of Patent: November 29, 2005Assignee: Xerox CorporationInventors: Timothy P. Bender, John F. Graham
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Patent number: 6946225Abstract: A multi-active electrophotographic charge generation element comprises a conductive support, a charge generation layer (CGL) disposed on the conductive support, and a charge transport layer (CTL) disposed on the charge generation layer. The charge generation layer (CGL) includes a charge-generation material comprising an aggregated or crystalline form of a first dye or pigment and a first polymeric binder. The charge transport layer (CTL) comprises at least one charge-transport agent, a second dye or pigment having absorption in a selected spectral region that at least partially overlaps the absorption of a dissolved non-aggregated or non-crystalline form of the first dye or pigment, and a second polymeric binder. The second dye or pigment in the charge transport layer absorbs radiation in the selected spectral region that is incident on the charge transport layer, thereby shielding the charge generation layer from that radiation and mitigating visible radiation-induced photofatigue.Type: GrantFiled: July 22, 2002Date of Patent: September 20, 2005Assignee: Eastman Kodak CompanyInventors: Albert V. Buettner, Dennis R. Fronheiser, Anne F. Lairmore, David S. Weiss, Jeffrey R. Murray, Marie B. O'Regan
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Patent number: 6921618Abstract: The present invention relates to a photoconductive organic pigment comprising granular cores and an organic pigment having photoconductive properties which organic pigment adheres to the surfaces of the granular cores, a photoconductive organic pigment dispersion liquid comprising the photoconductive organic pigment, and an electrophotographic photoreceptor comprising an electroconductive substrate laminated with a photosensitive layer containing the photoconductive organic pigment and an electrophotographic device using the electrophotographic photoreceptor.Type: GrantFiled: March 17, 2003Date of Patent: July 26, 2005Assignee: Fuji Xerox Co., Ltd.Inventors: Kazuya Hongo, Seiichi Takagi
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Publication number: 20040234875Abstract: An electrophotographic photoconductor includes an electroconductive substrate, a charge generation layer, and a charge transport layer formed by using a halogen-free solvent, arranged in this order, in which the charge generation layer contains a charge generation material having an average particle diameter smaller than a surface roughness of a plane where the electroconductive substrate is arranged, and a polyvinyl acetal resin having a ratio Mw/Mn of a weight-average molecular weight Mw to a number-average molecular weight Mn is 2.2 or more.Type: ApplicationFiled: March 19, 2004Publication date: November 25, 2004Inventors: Naohiro Toda, Tatsuya Niimi, Ryohichi Kitajima, Yoshiaki Kawasaki
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Publication number: 20040161684Abstract: A photoconductive imaging member including a hole blocking layer, a photogenerating layer, and a charge transport layer, and wherein the hole blocking layer contains, for example, a metal oxide; and a mixture of a phenolic compound and a phenolic resin, and wherein the phenolic compound can contain at least two phenolic groups.Type: ApplicationFiled: February 19, 2003Publication date: August 19, 2004Applicant: Xerox CorporationInventors: Jin Wu, Liang-Bih Lin, Jennifer Y. Hwang
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Publication number: 20040161683Abstract: A photoconductive imaging member including a supporting substrate, a hole blocking layer thereover, a crosslinked photogenerating layer and a charge transport layer, and wherein the photogenerating layer includes a photogenerating component and a vinyl chloride, allyl glycidyl ether, hydroxy containing polymer.Type: ApplicationFiled: February 19, 2003Publication date: August 19, 2004Applicant: Xerox CorporationInventors: Jin Wu, Liang-Bih Lin, John S. Chambers
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Patent number: 6777149Abstract: An image forming apparatus including at least an image irradiator configured to irradiate a photoreceptor with a coherent light beam while scanning to form pixel light spots thereon for forming an electrostatic latent image thereon, wherein the light spots overlap with adjacent light spots; and an image developer configured to develop the electrostatic latent image with a developer, wherein the photoreceptor comprises an intermediate layer located overlying an electroconductive substrate, a charge generation layer located overlying the intermediate layer and a charge transport layer located overlying the charge generation layer, wherein the charge generation layer satisfies the following relationship: T1≦3.5% wherein T1 represents a relative mirror reflectance of the charge generation layer against the coherent light beam when the coherent light beam irradiates the charge generation layer at an incident angle of 5°.Type: GrantFiled: March 25, 2002Date of Patent: August 17, 2004Assignee: Ricoh Company LimitedInventors: Takaaki Ikegami, Akihiro Sugino
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Publication number: 20040137346Abstract: A positively-charged electrophotographic organic photoreceptor includes an electrically conductive support, and a charge transport layer and a charge generating layer sequentially stacked on the electrically conductive support. The charge generating layer is formed by coating a charge generating layer forming composition that includes a fluorene compound, a charge generating material, a binder resin and an organic solvent on the charge transport layer, and drying. The organic photoreceptor has high sensitivity, while suppressing contamination of a charge generating layer during coating, and thicknesses of a charge transport layer and a charge generating layer may be adjusted. Also, the electrostatic properties of the organic photoreceptor, including charge potential and exposure potential, may be easily adjusted.Type: ApplicationFiled: November 20, 2003Publication date: July 15, 2004Applicant: SAMSUNG Electronics Co., Ltd.Inventors: Nam-Jeong Lee, Hae-Ree Joo, Kyung-Yol Yon
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Publication number: 20040126140Abstract: An electrophotographic photoreceptor is disclosed which includes a conductive resin substrate and a resin layer. The resin layer includes a binding resin and is formed on the conductive resin substrate. The difference between the solubility parameter of the conductive resin substrate and the solubility parameter of the resin layer of the photoreceptor is 2.5 (J/cm3)1/2 or less.Type: ApplicationFiled: December 30, 2002Publication date: July 1, 2004Applicant: KYOCERA MITA CORPORATIONInventors: Jun Azuma, Eiichi Miyamoto
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Publication number: 20040126688Abstract: A multi-layered organic electrophotographic photoconductor exhibits superior stability in mass production and excellent adhesion ability with two layers contacting the charge generation layer and is free of contamination of the coating liquid for a charge transport layer during a dip-coating process due to dissolution of the charge generation layer. The multi-layered organic electrophotographic photoconductor includes a conductive substrate and layers including an undercoat layer containing a thermosetting resin, a charge generation layer containing a charge generation material and an organic binder resin, and a charge transport layer laminated sequentially on the substrate, wherein polydispersity defined by a ratio of a weight average molecular weight to a number average molecular weight of the organic binder resin is at least 4.0, and the weight average molecular weight is at least 7.0×104 in a distribution of a polystyrene-converted molecular weight obtained by gel permeation chromatography.Type: ApplicationFiled: August 22, 2003Publication date: July 1, 2004Applicant: Fuji Electric Imaging Device Co., Ltd.Inventor: Mikio Yamazaki
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Publication number: 20040121251Abstract: A multi-layered electrophotographic positively charged organic photoconductor includes a conductive substrate, a charge transport layer formed on the conductive substrate, and a charge generating layer formed on the charge transport layer. A composition to form the charge transport layer includes at least one hole transport material, a binder resin and an organic solvent, and a composition to form the charge generating layer includes a charge generating material, a binder resin, an organic solvent and a hole transport material. An organic photoconductor has improved static electrical properties by controlling interfacial conditions of the charge transport layer and the charge generating layer. The charge generating layer may be readily coated on the charge transport layer. In addition, the organic photoconductor has excellent electric properties such as an improved sensitivity and a low discharge voltage.Type: ApplicationFiled: October 1, 2003Publication date: June 24, 2004Applicant: SAMSUNG Electronics Co., Ltd.Inventors: Saburo Yokota, Kyung-yol Yon, Hwan-koo Lee, Hae-ree Joo, Boem-jun Kim, Nam-jeong Lee
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Publication number: 20040115544Abstract: A charge transport layer for an imaging member comprising a charge transport layer wherein the charge transport layer comprises the application of charge transport molecules and a poly(fluoroacrylate)-graft-poly(methyl methacrylate) surfactant. The charge transport layer exhibits excellent wear resistance, excellent electrical performance, excellent print quality and decreased crystallization of the charge transport component.Type: ApplicationFiled: December 16, 2002Publication date: June 17, 2004Applicant: Xerox CorporationInventors: Min-Hong Fu, Colleen A. Helbig, Kent J. Evans, Kathleen M. Carmichael, David M. Skinner
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Patent number: 6720121Abstract: An electrophotographic photoconductor and method of manufacturing thereof exhibits excellent characteristics of residual potential and repetition potential by containment of an additive of a compound. The electrophotographic photoconductor includes a conductive substrate and a photosensitive layer on the substrate, in which the photosensitive layer contains tri(4-nitrophenyl) phosphate.Type: GrantFiled: April 3, 2002Date of Patent: April 13, 2004Assignee: Fuji Electric Imaging Device Co. Ltd.Inventors: Yoichi Nakamura, Koichi Aizawa, Teruo Sasaki, Kenichi Hara
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Publication number: 20040063013Abstract: The present invention relates to a photoconductive organic pigment comprising granular cores and an organic pigment having photoconductive properties which organic pigment adheres to the surfaces of the granular cores, a photoconductive organic pigment dispersion liquid comprising the photoconductive organic pigment, and an electrophotographic photoreceptor comprising an electroconductive substrate laminated with a photosensitive layer containing the photoconductive organic pigment and an electrophotographic device using the electrophotographic photoreceptor.Type: ApplicationFiled: March 17, 2003Publication date: April 1, 2004Applicant: Fuji Xerox Co., Ltd.Inventors: Kazuya Hongo, Seiichi Takagi
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Publication number: 20040053149Abstract: A photoreceptor including an electroconductive substrate; a charge generation layer located overlying the electroconductive substrate optionally with an intermediate layer therebetween; and a charge transport layer formed overlying the charge generation layer using a non-halogenated solvent and including a charge transport material and a resin, wherein the charge generation layer includes a polyvinyl acetal resin and a charge generation material having an average particle diameter less than a roughness of a surface of either the electroconductive substrate or the intermediate layer, on which the charge generation layer is located.Type: ApplicationFiled: June 27, 2003Publication date: March 18, 2004Inventors: Naohiro Toda, Tatsuya Niimi
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Publication number: 20040048181Abstract: An electrophotographic photosensitive member having a sensitivity to a short semiconductor laser light in a wavelength range of 380-500 nm is provided by incorporating a specific porphyrin compound in a photosensitive layer. The porphyrin compound is characterized by having a heterocyclic substituent, preferably 4 heterocyclic substituents each of a pyridyl group. The porphyrin compound includes a 5,10,15,20-tetrapyridyl-21H,23H-porphyrinato-zinc compound having a novel crystal form characterized by certain peaks in a CuK&agr;-characteristic X-ray diffraction pattern.Type: ApplicationFiled: September 2, 2003Publication date: March 11, 2004Applicant: CANON KABUSHIKI KAISHAInventor: Masato Tanaka
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Patent number: 6683175Abstract: An electrophotographic photosensitive member having a sensitivity to a short semiconductor laser light in a wavelength range of 380-500 nm is provided by incorporating a specific porphyrin compound in a photosensitive layer. The porphyrin compound is characterized by having a heterocyclic substituent, preferably 4 heterocyclic substituents each of a pyridyl group. The porphyrin compound includes a 5,10,15,20-tetrapyridyl-21H,23H-porphyrinato-zinc compound having a novel crystal form characterized by certain peaks in a CuK&agr;-characteristic X-ray diffraction pattern.Type: GrantFiled: April 10, 2002Date of Patent: January 27, 2004Assignee: Canon Kabushiki KaishaInventor: Masato Tanaka
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Publication number: 20040009418Abstract: A member including for example, a substrate, a charge blocking layer, an optional adhesive layer, a charge generating layer comprising particles comprising a photogenerating layer of for example, chlorogallium phthalocyanine dispersed in a matrix comprising a charge transport molecule, an electron transport molecule which functions to sensitize the chlorogallium phthalocyanine pigment in the charge generating layer and mixtures thereof, and a film forming binder.Type: ApplicationFiled: July 2, 2002Publication date: January 15, 2004Applicant: Xerox Corporation.Inventors: Anna M. Main, Liang-Bih Lin, John S. Chambers, James M. Duff, Timothy P. Bender
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Publication number: 20040002013Abstract: An electrostatographic article including: a substrate; a charge generator layer overcoated on the substrate and which layer is sensitive to blue light; and a charge transport layer overcoated on the charge generator layer and which charge transport layer is transparent to blue light.Type: ApplicationFiled: June 28, 2002Publication date: January 1, 2004Applicant: Xerox CorporationInventors: Timothy P. Bender, John F. Graham