Triamine, Or Diamine Containing Patents (Class 430/58.75)
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Publication number: 20040126684Abstract: An imaging member having a charge transport layer is provided. The charge transport layer includes a plurality of charge transport layers coated from solutions of similar or different compositions or concentrations, wherein the upper or additional transport layer(s) comprise a lower concentration of charge transport compound than the first (bottom) charge transport layer. The charge transport compound included in the first (bottom) charge transport layer may either be the same or different from that included in the additional charge transport layers. The charge transport compound in one or more of the layers is dissolved or molecularly dispersed in an electrically inactive polymer material to form a solid solution. In such a construction, the resulting charge transport layer exhibits enhanced cracking suppression, improves wear resistance, provides excellent imaging member electrical performance, and delivers improved print quality.Type: ApplicationFiled: December 16, 2003Publication date: July 1, 2004Applicant: Xerox CorporationInventors: Anthony M. Horgan, Robert C.U. Yu, Satchidanand Mishra, Richard L. Post, Edward F. Grabowski, Kathleen M. Carmichael, John R. Lambie
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Publication number: 20040126685Abstract: An imaging member having a charge transport layer with multiple regions is provided. The charge transport layer includes a plurality of charge transport layers coated from solutions of similar or different compositions or concentrations, wherein at least the top or uppermost transport layer comprises a lower concentration of charge transport compound than the first (bottom) charge transport layer. The charge transport compound included in the first (bottom) charge transport layer may either be of the same or different compounds from that included in the top or additional charge transport layer(s). The charge transport compound present in each layer may be dissolved or molecularly dispersed in an electrically inactive polymer material to form a solid solution. In such a construction, the resulting charge transport layer exhibits enhanced cracking suppression, improves wear resistance, provides excellent imaging member electrical performance, and delivers improved print quality.Type: ApplicationFiled: December 16, 2003Publication date: July 1, 2004Applicant: Xerox CorporationInventors: Anthony M. Horgan, Satchidanand Mishra, Robert C.U. Yu, Richard L. Post, Edward F. Grabowski, Kathleen M. Carmichael, John R. Lambie
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Publication number: 20040126687Abstract: An electrophotographic photoconductor having at least a photosensitive layer on a conductive support, wherein the electrophotographic photoconductor comprising, in the outermost layer thereof: a filler, an organic compound having an acid value of 10-400 mgKOH/g, and at least one of compounds represented by the following general formulas 1 and 2: 1Type: ApplicationFiled: September 23, 2003Publication date: July 1, 2004Inventors: Takaaki Ikegami, Tomoyuki Shimada, Yasuo Suzuki, Nozomu Tamoto, Hidetoshi Kami
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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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Publication number: 20040067427Abstract: A member including for example, a substrate, a charge generating layer, a charge transport layer comprising a synthesized mixture ofType: ApplicationFiled: October 8, 2002Publication date: April 8, 2004Applicant: Xerox CorporationInventors: Yuhua Tong, John F. Yanus, Timothy J. Fuller, Min-Hong Fu, Dennis J. Prosser, Susan M. VanDusen
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Publication number: 20040063012Abstract: An improved organophotoreceptor comprises an electrically conductive substrate and a photoconductive element on the electrically conductive substrate wherein the photoconductive element hasType: ApplicationFiled: June 9, 2003Publication date: April 1, 2004Inventors: Nusrallah Jubran, Zbigniew Tokarski, Kam W. Law
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Publication number: 20040018439Abstract: A member including for example, a substrate, a charge generating layer, a charge transport layer comprising a poly(phenylsilsesquioxane), molecule, and a film forming binder.Type: ApplicationFiled: July 23, 2002Publication date: January 29, 2004Applicant: Xerox CorporationInventors: Yuhua Tong, Timothy J. Fuller, Sean X. Pan, John F. Yanus, Cindy C. Chen, Min-Hong Fu, Dennis J. Prosser, Susan M. VanDusen
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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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Patent number: 6677090Abstract: A charge transport layer for an imaging member comprising a charge transport material with a single carbon cored dendrimeric, star-like molecular structure not exhibiting early onset of charge transport layer fatigue cracking. The charge transport layer exhibits excellent wear resistance, excellent electrical performance, and outstanding print quality.Type: GrantFiled: July 23, 2002Date of Patent: January 13, 2004Assignee: Xerox CorporationInventors: Yuhua Tong, John F. Yanus, Timothy J. Fuller, Alexander N. Klymachyov, Min-Hong Fu
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Publication number: 20030218665Abstract: An image forming apparatus has at least a photoconductor, a charger, and an irradiator for irradiating a light for optically writing in on the photoconductor to form a latent electrostatic image using a process for electrophotography in which a resolution of the optical writing in operation is 1200 dpi or more. Further, the optical writing operation is performed using a laser beam having a diameter of 35 &mgr;m or less. The photoconductor is provided with at least a charge generating layer containing a charge generating substance and a charge transporting layer containing a charge transporting substance. The charge transporting layer has a carrier mobility of 1×10−5 cm2·V−1·sec−1 or more under an electric field of 3×10−5 V·cm−1.Type: ApplicationFiled: October 1, 2002Publication date: November 27, 2003Inventors: Kei Yasutomi, Yasuo Suzuki, Nozomu Tamoto
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Publication number: 20030194627Abstract: Electrophotographic photoreceptor having a photosensitive layer containing an amino compound selected from formulae 1 to 22 in the specification.Type: ApplicationFiled: September 6, 2002Publication date: October 16, 2003Inventors: Takaaki Ikegami, Yasuo Suzuki, Tomoyuki Shimada, Nozomu Tamoto, Hidetoshi Kami
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Publication number: 20030186144Abstract: An electrophotographic photosensitive member, irradiated with semiconductor laser light having a wavelength of 380 to 500 nm, includes a conductive substrate, a charge-generating layer formed thereon; and a charge transport layer formed thereon, the charge transport layer having a transmittance of at least 30% for the semiconductor laser light. A process cartridge mountable to and detachable from an electrophotographic apparatus includes the electrophotographic photosensitive member. An electrophotographic apparatus also includes the electrophotographic photosensitive member.Type: ApplicationFiled: July 27, 1999Publication date: October 2, 2003Inventors: MITSUHIRO KUNIEDA, TOSHIHIRO KIKUCHI, TETSURO KANEMARU, YUKA KAISHA
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Patent number: 6596450Abstract: A charge transport composition containing aromatic amines with crosslinkable silanes as represented by the formula wherein A represents a hole transporting aromatic tertiary amine moiety; L1 and L2 represents charge such as a divalent group; X represents oxygen or an imino group; Y represents an alkoxy group, or a halide atom; R is a hydrogen atom or an alkyl group; and n represents the number of repeating segments.Type: GrantFiled: September 10, 2001Date of Patent: July 22, 2003Assignee: Xerox CorporationInventors: Nan-Xing Hu, Yu Qi, Ping Liu
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Patent number: 6555279Abstract: An electrophotographic photosensitive member exhibiting a good durability and stable electrophotographic performances regardless of environmental change is provided by coating the photosensitive layer with a specific protective layer. The protective layer comprises a cured phenolic resin and a charge-transporting compound having at least one group selected from the group consisting of hydroxyalkyl groups, hydroxyalkoxy groups and hydroxyphenyl groups capable of having a substituent.Type: GrantFiled: June 21, 2001Date of Patent: April 29, 2003Assignee: Canon Kabushiki KaishaInventors: Kouichi Nakata, Yosuke Morikawa, Kimihiro Yoshimura, Hiroshi Saito
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Publication number: 20030054274Abstract: A high-sensitivity and long-life electrophotographic photoreceptor comprising an electroconductive substrate and at least a photosensitive layer on the electroconductive substrate is provided, wherein the photosensitive layer contains a polyarylate resin not having a nitrogen atom in its repeating unit, and the Hall mobility at an electric field strength of 3×105 (V/cm) and at a temperature of 21° C. of the photosensitive layer is 3×10−6 (cm2/Vs) or more.Type: ApplicationFiled: September 19, 2002Publication date: March 20, 2003Applicant: MITSUBISHI CHEMICAL CORPORATIONInventors: Teruyuki Mitsumori, Akiteru Fujii, Mamoru Nozomi, Satoshi Kato, Yuuta Kumano
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Publication number: 20030049551Abstract: 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: September 7, 2001Publication date: March 13, 2003Applicant: Xerox CorporationInventors: Satish R. Parikh, Kathleen M. Carmichael, Edward F. Grabowski, Andrew R. Melnyk, Liang-Bih Lin, Andronique Ioannidis, Dasarao K. Murti, Harold F. Hammond
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Patent number: 6521386Abstract: An electrophotographic photoreceptor including an electroconductive substrate and a photoreceptive layer, which is formed overlying the substrate, wherein the photoreceptive layer includes a charge carrier generation layer including a charge carrier generation material and a charge carrier transport layer including a charge carrier transport material, and wherein when an electric field of from 2.5×105 V/cm to 5.5×105 V/cm is applied to the charge carrier transport layer, the relationship, tCTL/&mgr;CTL≦1.5×103 V·s/m, is satisfied, wherein tCTL represents a thickness of the charge carrier transport layer and &mgr;CTL represents a charge mobility of the charge carrier transport layer.Type: GrantFiled: February 15, 2000Date of Patent: February 18, 2003Assignee: Ricoh Company Ltd.Inventors: Yohta Sakon, Narihito Kojima, Minoru Umeda, Masao Yoshikawa, Hiroshi Nagame, Ryuta Takeichi, Akiyo Namiki
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Patent number: 6465142Abstract: Poly(vinyl butyral) compounds of Formula 1 where R1 is alkyl, dialkyl ether, alkyl carbonyl, cycloalkyl, cycloalkyl alkyl, aryl, aryl carbonyl, alkaryl carbonyl, aralkyl, or alkyl aralkyl; Z is —OH or —NHR2, where R2 is independently alkyl, dialkyl ether, alkyl carbonyl, cycloalkyl, cycloalkyl alkyl, aryl, aryl carbonyl, alkaryl carbonyl, aralkyl, alkyl, aralkyl or R2 is H. x is 60 to 95 mol %, y is 3 to 40 mol %, z is 0 to 20 mol %; and x+y+z is 100 mol %, a process for preparing compounds of Formula I, an intermediate in the synthesis of compounds of Formula I, and a photoconductor for electrophotography containing a compound of Formula I as a binder in the charge generation layer are described.Type: GrantFiled: November 20, 1997Date of Patent: October 15, 2002Assignee: Hewlett-Packard CompanyInventors: Khe C. Nguyen, Sivapackia Ganapathiappan
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Publication number: 20020076632Abstract: Aryldiamine charge transporting molecules for a charge transport layer of an imaging member have a higher mobility by increasing the number of phenyl groups between the nitrogen atoms of the aryldiamine.Type: ApplicationFiled: October 15, 2001Publication date: June 20, 2002Applicant: Xerox CorporationInventors: John F. Yanus, Damador M. Pai, Markus R. Silvestri, Timothy J. Fuller, Andronique Ioannidis
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Patent number: 6406825Abstract: An electrophotographic photoreceptor is disclosed. The photoreceptor comprises a resin layer &bgr; obtained by hardening at least one of an organic silicon compound having a hydroxyl group or a hydrolizable group and condensation compound thereof, and a compound represented by formula(1), A(Q)k (1) wherein A represents a group containing an aromatic group or a heterocyclic group, Q represents a group containing at least one of a hydroxy group, an amino group, and a mercapto group, and k represents an integer not less than 2, and wherein said organic silicon compound is three-dimensionally cross-linked.Type: GrantFiled: October 17, 2000Date of Patent: June 18, 2002Assignee: Konica CorporationInventors: Tomoo Sakimura, Akihiko Itami, Kazumasa Watanabe, Shingo Fujimoto, Toyoko Shibata, Tomoko Sakimura
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Publication number: 20020051918Abstract: The invention relates to an electrophotosensitive material comprising an organic photosensitive layer and an inorganic surface protective layer, wherein at least an outermost part of the organic photosensitive layer contains a diphenylamine compound represented by a formula (1): 1Type: ApplicationFiled: July 24, 2001Publication date: May 2, 2002Inventors: Eiichi Miyamoto, Yoshio Inagaki, Hideaki Fukunaga
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Patent number: 6361913Abstract: An electrophotographic imaging member comprising a substrate, a charge generating layer, a charge transport layer, and an overcoat layer comprising a small molecule hole transporting triphenylmethane having at least one hydroxy functional group and a polyamide film forming binder capable of forming hydrogen bonds with the hydroxy functional groups of the hydroxy triphenyl methane. This overcoat layer may be fabricated using an alcohol solvent. This electrophotographic imaging member may be utilized in an electrophotographic imaging process.Type: GrantFiled: December 21, 1993Date of Patent: March 26, 2002Assignee: Xerox CorporationInventors: Damodar M. Pai, John F. Yanus
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Patent number: 6291120Abstract: An object of the invention is to obtain an electrophotographic photoreceptor having high sensitivity, high image quality, high stability and high resolution. A charge generating layer of the electrophotographic photoreceptor contains, as a charge generating substance, a crystalline titanyl phthalocyanine composition exhibiting, in an X-ray diffraction spectrum of a CuK&agr; characteristic X-ray (wavelength: 1.5418 Å), at least four diffraction peaks at Bragg angles (2&thgr;±0.2°) of 10.0° or lower, and a diffraction peak at a Bragg angle of 27.2° having an intensity smaller than the maximum diffraction intensity of the four diffraction peaks, or a lowly crystalline titanyl phthalocyanine composition exhibiting a diffraction peak having the maximum diffraction intensity at a Bragg angle (2&thgr;±0.2°) of 27.3°. A charge transporting layer of the electrophotographic photoreceptor contains, as a charge transporting substance, a bisamine compound.Type: GrantFiled: May 11, 2000Date of Patent: September 18, 2001Assignee: Sharp Kabushiki KaishaInventors: Satoshi Nishigaki, Takatsugu Obata, Akihiro Kondo
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Patent number: 6228547Abstract: Disclosed are novel compounds useful in electrophotographic photoreceptors as charge-transporting materials having good miscibility with binder polymers and capable of forming a thin stable organic film having a high concentration; and an electrophotographic photoreceptor containing the same. The compounds are bis(3,4-methylenedioxyphenylamino) derivatives represented by general formula (1): wherein Ar1 and Ar2 each is an optionally substituted aryl group and Ar3 is a phenylene group or an optionally substituted biphenylene group.Type: GrantFiled: June 15, 1999Date of Patent: May 8, 2001Assignee: Takasago International CorporationInventors: Tohru Kobayashi, Yoshimasa Matsushima, Yoko Aoki, Mamoru Yamada, Hiroshi Sugiyama, Toshimitsu Hagiwara
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Patent number: 6207334Abstract: An electrophotographic imaging member including a substrate, a charge generating layer, a charge transport layer, and an overcoat layer including a polyvinyl butyral film forming binder, a cross linked polyamide film forming binder, and a hole transport material. A process for forming an overcoated imaging member is also disclosed.Type: GrantFiled: May 12, 2000Date of Patent: March 27, 2001Assignee: Xerox CorporationInventors: Kenny-tuan T. Dinh, Timothy J. Fuller, Markus R. Silvestri, Paul J. Defeo, Damodar M. Pai, John F. Yanus, Robert W. Nolley
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Patent number: 6197464Abstract: An electrophotographic imaging member including a substrate, a charge generating layer, a charge transport layer, and an overcoat layer formed from a solution including a first cross linkable polyamide film forming binder free of methyl methoxy groups, an optional second cross linkable polyamide film forming binder containing methyl methoxy groups, a cross linking catalyst and a hole transport material. A process for forming an overcoated imaging member is also disclosed.Type: GrantFiled: May 12, 2000Date of Patent: March 6, 2001Assignee: Xerox CorporationInventors: Kenny-tuan T. Dinh, Timothy J. Fuller, Markus R. Silvestri, Paul J. Defeo, Damodar M. Pai, John F. Yanus, Robert W. Nolley, William W. Limburg, Dale S. Renfer
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Patent number: 6187491Abstract: Electrophotographic charge generating elements comprise a solid electrolyte layer having improved image discrimination. The solid electrolyte layer includes a complex of a silsesquioxane and a charge carrier, and further includes nondiffusible acid scavengers in an amount of at least 0.2 weight %. The acid scavengers are nondiffusible tertiary arylamines having a pKa of at least 4.Type: GrantFiled: February 8, 1999Date of Patent: February 13, 2001Assignee: Eastman Kodak CompanyInventors: Wayne T. Ferrar, J. Robin Cowdery, William T. Gruenbaum, David S. Weiss