Containing Amino Or Substituted Amino Group Patents (Class 430/73)
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Patent number: 7144665Abstract: Improved organophotoreceptor comprises an electrically conductive substrate and a photoconductive element on the electrically conductive substrate, the photoconductive element comprising: (a) a charge transport material having the formula where R1, R2, R3, R4, R5, R6, R7, and R8 are, each independently, an alkyl group, an alkaryl group, an aryl group, or heterocyclic group, X and X? are, each independently, aromatic groups, and Z is a divalent linking group; and (b) a charge generating compound. Corresponding electrophotographic apparatuses and imaging methods are described.Type: GrantFiled: December 30, 2003Date of Patent: December 5, 2006Assignee: Samsung Electronics Co., Ltd.Inventors: Zbigniew Tokarski, Nusrallah Jubran, Vytautas Getautis, Ingrida Paulauskaite, Valentas Gaidelis, Edmundas Montrimas
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Patent number: 7132209Abstract: Improved organophotoreceptor comprises an electrically conductive substrate and a photoconductive element on the electrically conductive substrate, the photoconductive element comprising: (a) a charge transport material having the formula where R1, R2, R3, and R4 are, independently, H, an alkyl group, an alkaryl group, or an aryl group; X1 and X2 are, independently, a linking group having the formula —(CH2)m—, branched or linear, where m is an integer between 1 and 20, inclusive, and one or more of the methylene groups is optionally replaced by O, S, C?O, O?S?O, a heterocyclic group, an aromatic group, urethane, urea, an ester group, a NR5 group, a CHR6 group, or a CR7R8 group where R4, R5, R6, and R7 are, independently, H, hydroxyl group, thiol group, an alkyl group, an alkaryl group, a heterocyclic group, or an aryl group; and Y1, Y2, and Y3 are, independently, an arylamine group; and (b) a charge generating compound.Type: GrantFiled: October 31, 2003Date of Patent: November 7, 2006Assignee: Samsung Electronics Co., LtdInventors: Juozas Vidas Grazulevicius, Gintaras Buika, Vygintas Jankauskas, Ruta Budreckiene, Jonas Sidaravicius, Zbigniew Tokarski, Nusrallah Jubran
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Patent number: 7118840Abstract: Improved organophotoreceptor comprises an electrically conductive substrate and a photoconductive element on the electrically conductive substrate, the photoconductive element comprising: (a) a charge transport material having the formula where n is an integer between 3 and 6; R1 and R2 are, each independently, H, an alkyl group, an alkenyl group, an aromatic group, or a heterocyclic group; R3, R4, and R5 are, each independently, H, thiol, hydroxyl, carboxyl, an amino group, a halogen, nitro, cyano, an alkyl group, an alkenyl group, an aromatic group, a heterocyclic group, or a part of a ring group; X1 and X2 are, each independently, a linking group; Y comprises an arylamine group; and Z is a bridging group; and (b) a charge generating compound. Corresponding electrophotographic apparatuses and imaging methods are described.Type: GrantFiled: December 31, 2003Date of Patent: October 10, 2006Assignee: Samsung Electronics Co., LTDInventors: Zbigniew Tokarsi, Nusrallah Jubran, Vytautas Getautis, Ingrida Paulauskaite, Vygintas Jankauskas, Jonas Sidaravicius
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Patent number: 7115347Abstract: Improved organophotoreceptor comprises an electrically conductive substrate and a photoconductive element on the electrically conductive substrate, the photoconductive element comprising: (a) a charge transport material having the formula where R1, R2, R3, and R4 comprise, each independently, an alkyl group, an alkenyl group, an aromatic group, a heterocyclic group, or a part of a ring group; X and X? comprise, each independently, an aromatic group; Y and Y? comprise, each independently, a (disubstituted)methylene group; and Z is a linking group; (b) a charge generating compound; and (c) an electrically conductive substrate on which said charge transport material and said charge generating compound are located. Corresponding electrophotographic apparatuses and imaging methods are also described.Type: GrantFiled: January 16, 2004Date of Patent: October 3, 2006Assignee: Samsung Electronics Co., LTDInventors: Zbigniew Tokarski, Nusrallah Jubran, Vytautas Getautis, Valentas Gaidelis, Maryte Daskeviciene, Edmundas Montrimas, Ingrida Paulauskaite, Jonas Sidaravicius
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Patent number: 7112392Abstract: An electrophotographic photoreceptor including an electroconductive substrate and a photosensitive layer on the electroconductive substrate, wherein the photosensitive layer includes at least a compound having a substituted or unsubstituted alkylamino group and a charge transport material, and wherein an oxidation potential (Eox1) of the substituted or unsubstituted alkylamino group and an oxidation potential (Eox2) of the charge transport material satisfy the following relationship (I): Eox1?Eox2??0.2.Type: GrantFiled: February 24, 2004Date of Patent: September 26, 2006Assignee: Ricoh Company, Ltd.Inventors: Tomoyuki Shimada, Takaaki Ikegami, Yasuo Suzuki
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Patent number: 7056632Abstract: An organic optoelectronic device includes a solution coatable thin film having a hole transporting material, an electron transporting material, and a photogenerating component uniformly dispersed therein. The thin film is about 0.2 microns or less, and can be spin-coated onto a substrate and further coated with electrodes.Type: GrantFiled: January 21, 2003Date of Patent: June 6, 2006Assignee: Xerox CorporatioinInventor: Andronique Ioannidis
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Patent number: 7018756Abstract: A photoconductive imaging member is disclosed comprising a charge generation layer and a charge transport layer comprising an oxidative inhibitor. An electrophotographic imaging process using the imaging member of the invention is also described.Type: GrantFiled: September 5, 2003Date of Patent: March 28, 2006Assignee: Xerox CorporationInventors: Damodar M. Pai, Kent J. Evans, Kathleen M. Carmichael, Colleen A. Helbig, John F. Yanus, Yuhua Tong, Timothy J. Fuller, Karen S. Garland, Paul J. DeFeo, Anita P. Lynch
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Patent number: 7018755Abstract: 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: where R1, R2 are substituted or unsubstituted alkyl groups or aromatic hydrocarbon rings, and may be identical or different. R1, R2 may also be bonded together to form a substituted or unsubstituted heterocycle containing a nitrogen atom. R3, R4, R5 are substituted or unsubstituted alkyl or alkoxy groups, or halogen atoms. Ar is a substituted or unsubstituted aromatic hydrocarbon ring or aromatic heterocycle. n is an integer in the range 2 to 4, and k, l, m are respectively integers in the range 0 to 3. X is an oxygen atom, or a sulfur atom.Type: GrantFiled: September 23, 2003Date of Patent: March 28, 2006Assignee: Ricoh Company, Ltd.Inventors: Takaaki Ikegami, Tomoyuki Shimada, Yasuo Suzuki, Nozomu Tamoto, Hidetoshi Kami
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Patent number: 7008743Abstract: Improved organophotoreceptor comprises an electrically conductive substrate and a photoconductive element on the electrically conductive substrate, the photoconductive element comprising: (a) a charge transport material having the formula where R1 and R2 are, independently, H, an alkyl group, an alkaryl group, or an aryl group; X is a linking group having the formula —(CH2)m—, branched or linear, where m is an integer between 1 and 20, inclusive, and one or more of the methylene groups is optionally replaced by O, S, C?O, O?S?O, a heterocyclic group, an aromatic group, urethane, urea, an ester group, a NR3 group, a CHR4 group, or a CR5R6 group where R3, R4, R5, and R6 are, independently, H, hydroxyl group, thiol group, an alkyl group, an alkyl group, a heterocyclic group, or an aryl group; V comprises a vinyl ether group; and Z comprises an (N,N-disubstituted)arylamine group, such as a carbazole group, a julolidine group, or a p-(N,N-disubstituted)arylamine group; and (b) a charge generating compound.Type: GrantFiled: October 31, 2003Date of Patent: March 7, 2006Assignee: Samsung Electronics Co., Ltd.Inventors: Juozas Vidas Grazulevicius, Gintaras Buika, Vygintas Jankauskas, Valentas Gaidelis, Ruta Budreckiene, Zbigniew Tokarski, Nusrallah Jubran
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Patent number: 6994941Abstract: An electrophotographic photosensitive member is provided having a support and a photosensitive layer provided on the support and containing at least one kind of charge-transporting material which has a specific structure with a molecular weight of from 1,500 to 4,000, and is held in a proportion of from 90% by weight to 100% by weight based on the total weight of the charge-transporting material.Type: GrantFiled: August 28, 2003Date of Patent: February 7, 2006Assignee: Canon Kabushiki KaishaInventors: Takakazu Tanaka, Itaru Takaya, Yuka Ishiduka, Harunobu Ogaki, Kenichi Kaku
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Patent number: 6991882Abstract: This invention relates to a novel organophotoreceptor that includes a photoconductive layer having a) a novel charge transport compound having the formula ?where R1 is a carbazole group, a julolidine group, or a p-(N,N-disubstituted)arylamine, R2, R3, R4, R5 and R6 are, independently, an alkyl group or an aryl group, R7 and R8 are, independently, hydrogen, an alkyl group, or an aryl group, X is oxygen, sulfur, or a NR? group where R? is hydrogen, an alkyl, or an aryl group, and Y is a trivalent aryl group; (b) a charge generating compound; and wherein the at least one photoconductive layer is carried on an electrically conductive substrate.Type: GrantFiled: August 20, 2003Date of Patent: January 31, 2006Assignee: Samsung Electronics Co., Ltd.Inventors: Vytautas Getautis, Edmundas Montrimas, Ingrida Paulauskaite, Valentas Gaidelis, Vygintas Jankauskas, Zbigniew Tokarski, Nusrallah Jubran, Kam W. Law
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Patent number: 6991881Abstract: The present invention relates to an electrophotographic photosensitive member having a support and provided thereon a photosensitive layer. The photosensitive layer contains a high-molecular weight charge-transporting material having a specific repeating structural unit. The high-molecular weight charge-transporting material has a weight-average molecular weight Mw of 1,500 or more and an energy level of highest occupied molecular orbital, EHOMO, of from ?8.3 eV or more to ?8.0 eV or less as found by semiempirical molecular-orbital calculation. The present invention also relates to a process cartridge and an electrophotographic apparatus which have such an electrophotographic photosensitive member.Type: GrantFiled: April 25, 2003Date of Patent: January 31, 2006Assignee: Canon Kabushiki KaishaInventors: Harunobu Ogaki, Akira Yoshida, Takakazu Tanaka, Itaru Takaya, Yuka Ishiduka
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Patent number: 6964833Abstract: Improved organophotoreceptors comprise: (a) a charge transport compound having the formula where n is an integer from 0 to 1; X is an (N,N-disubstituted)arylamine group; Ar is an aryl group or a heterocyclic group; A is a first linking group with the formula —(CH2)p— which can be branched or linear, where p is an integer from 3 to 20 inclusive; and B is a second linking group having the formula -Q-Z-Q?-, where Q and Q? are, independently, O, S, or NR1; wherein when Q or Q? is NR1 or Q=O and Q?=S, Z comprises an aryl group, and wherein when Q=Q?=S or Q=Q?=O, Z comprises a multi-ring conjugated group or Y—W—Y?, where the groups R1, Y, W, and Y? are defined in the specification; (b) a charge generating compound; and (c) an electrically conductive substrate over which said charge transport compound and said charge generating compound are located.Type: GrantFiled: May 7, 2003Date of Patent: November 15, 2005Assignee: Samsung Electronics Co., Ltd.Inventors: Zbigniew Tokarski, Nusrallah Jubran, Vytautas Getautis, Edmundas Montrimas, Maryte Daskeviciene, Valentas Gaidelis, Vygintas Jankauskas
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Patent number: 6960418Abstract: Improved organophotoreceptor comprises an electrically conductive substrate and a photoconductive element on the electrically conductive substrate, the photoconductive element comprising: (a) a charge transport material having the formula where R1, R2, R3, and R4 are, independently, an alkyl group, an alkaryl group, or an acyl group; Y is an alkyl group, alkaryl group, or aryl group; X is a linking group having the formula —(CH2)m—, branched or linear, where in is an integer between 1 and 20, inclusive, and one or more of the methylene groups is optionally replaced by O, S, C?O, O?S?O, a heterocyclic group, an aromatic group, urethane, urea, an ester group, a NR3 group, a CHR4 group, or a CR5R6 group where R3, R4, R,5 and R6 are, independently, H, hydroxyl group, thiol group, an alkyl group, an alkaryl group, a heterocyclic group, or an aryl group; and E is an epoxy group; and (b) a charge generating compound.Type: GrantFiled: October 23, 2003Date of Patent: November 1, 2005Assignee: Samsung Electronics Co., Ltd.Inventors: Nusrallah Jubran, Zbigniew Tokarski, Vytautas Getautis, Osvaldas Paliulis, Valentas Gaidelis, Edmundas Montrimas
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Patent number: 6958204Abstract: An electrophotographic photosensitive member includes a charge generating material and a charge transfer material. The charge transfer material contains a triarylamine compound synthesized from an amine compound and an aryl halide in the presence of a catalyst comprising a phosphine compound represented by formula (1) and a palladium compound: wherein Ar1 to Ar3 are each independently an alkyl or aryl group which may have a substituent group, and at least one of Ar1 to Ar3 is an aryl group. A process cartridge includes the electrophotographic photosensitive member.Type: GrantFiled: August 25, 2004Date of Patent: October 25, 2005Assignee: Canon Kabushiki KaishaInventors: Takakazu Tanaka, Mitsuhiro Kunieda, Yuka Nakajima, Harunobu Ohgaki
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Patent number: 6953957Abstract: The invention generally relates to the use of poly-3,3?-dialkyl-2,2?:5?,2?-terthiophenes as charge transport materials or semiconductors in electrooptical, electronic or electroluminescent devices, and to charge transport and semiconducting components and devices comprising poly-3,3?-dialkyl-2,2?:5?,2?-terthiophenes.Type: GrantFiled: October 15, 2003Date of Patent: October 11, 2005Assignees: Merck Patent GmbH, Siemens AGInventors: Iain McCulloch, Marcus Thompson, Mark Giles, Martin Heeney, Steven Tierney, Henning Rost
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Patent number: 6899984Abstract: This invention relates to a novel organophotoreceptor that includes: (a) a charge transport compound having the formula where n is an integer from 0 to 1 inclusive; X is an (N,N-disubstituted)arylamine, such as a carbazole group, a julolidine group, or a p-(N,N-disubstituted)arylamine group (which can be a triarylamine, an alkyldiarylamine or a dialkylarylamine); Ar is an aryl group or a heterocyclic group; A is a linking group having the formula —S—(CH2)m—S— where m is an integer from 1 to 15 inclusive and; B is a second linking group with the formula —(CH2)p— which can be branched or linear, where p is an integer from 3 and 20 inclusive and where one or more methylene groups can be optionally replaced by O, S, a carbonyl group, urethane, urea, an ester group, a —NR21 group, a CHR22 group, or a CR23R24 group where R21, R22, R23 and R24 are, independently, H, hydroxyl, thiol, an amine group, an alkyl group, an alkaryl group, an aryl group, or part of a ring; (b) a charge generating compound; and (c)Type: GrantFiled: May 7, 2003Date of Patent: May 31, 2005Assignee: Samsung Electronics Co., Ltd.Inventors: Zbigniew Tokarski, Nusrallah Jubran, Vytautas Getautis, Jonas V. Sidaravicius, Edmundas Montrimas, Maryte Daskeviciene, Valentas Gaidelis, Vygintas Jankauskas, Albina Stanisauskaite
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Patent number: 6864028Abstract: Improved organophotoreceptors have: (a) a charge transport compound having the formula where R1 and R2 are, independently, an (N,N-disubstituted) arylamine group, such as a julolidine group, a triphenyl amine group, or an N-substituted carbazole group; R3 and R4 are, independently, an alkylsulfonylphenyl group; and X is a linking group having the formula —(CH2)m—, branched or linear, where m is an integer between 0 and 20, inclusive, and one or more of the methylene groups is optionally replaced by an oxygen atom, a carbonyl group, urethane, urea, an ester group, a —NR5 group, a CHR6 group, or a CR7R8 group where R5, R6, R7, and R8 are, independently, H, an alkyl group, or aryl group; (b) a charge generating compound; and (c) an electrically conductive substrate over which the charge transport compound and the charge generating compound are located.Type: GrantFiled: March 25, 2003Date of Patent: March 8, 2005Assignee: Samsung Electronics Co., Ltd.Inventors: Nusrallah Jubran, Zbigniew Tokarski, Kam W. Law, Evaldas Burbulis, Vaida Andruleviciute
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Patent number: 6818368Abstract: An electrophotographic photosensitive member includes a charge generating material and a charge transfer material. The charge transfer material contains a triarylamine compound synthesized from an amine compound and an aryl halide in the presence of a catalyst comprising a phosphine compound represented by formula (1) and a palladium compound: wherein Ar1 to Ar3 are each independently an alkyl or aryl group which may have a substituent group, and at least one of Ar1 to Ar3 is an aryl group. A process cartridge includes the electrophotographic photosensitive member.Type: GrantFiled: April 12, 2001Date of Patent: November 16, 2004Assignee: Canon Kabushiki KaishaInventors: Takakazu Tanaka, Mitsuhiro Kunieda, Yuka Nakajima, Harunobu Ohgaki
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Publication number: 20040219446Abstract: Improved organophotoreceptor comprises an electrically conductive substrate and a photoconductive element on the electrically conductive substrate, the photoconductive element comprising:Type: ApplicationFiled: February 10, 2004Publication date: November 4, 2004Inventors: Nusrallah Jubran, Zbigniew Tokarski, Kam W. Law
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Patent number: 6811940Abstract: The present invention intends to provide a TPD derivative being excellent in electric properties as a compound due to its extremely less content of impurities (TPD analogues) as well as being excellent in film-forming property due to its low crystallinity.Type: GrantFiled: September 19, 2002Date of Patent: November 2, 2004Assignee: Orient Chemical Industries, Ltd.Inventors: Yoshio Kita, Yasuhiro Yamasaki
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Publication number: 20040197685Abstract: A photoconductive imaging member comprised of a supporting substrate, and thereover a single layer comprised of a mixture of a photogenerator component, charge transport components, and a certain electron transport component, and a certain polymer binder.Type: ApplicationFiled: April 4, 2003Publication date: October 7, 2004Applicant: Xerox CorporationInventors: Andronique loannidis, Nancy L. Belknap, Cindy C. Chen, Lanhui Zhang, Timothy P. Bender, John F. Graham, Ah-Mee Hor, James M. Duff
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Publication number: 20040191655Abstract: This invention relates to a novel organophotoreceptor that includes:Type: ApplicationFiled: February 4, 2004Publication date: September 30, 2004Inventors: Vytautas Getautis, Tadas Malinauskas, Jouzas V. Grazulevicius, Valentas Gaidelis, Vygintas Jankauskas, Zbignie W. Tokarski, Nusrallah Jubran, Kam W. Law
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Publication number: 20040191654Abstract: An electrophotographic photoreceptor comprising a support and a photosensitive layer is disclosed. The photosensitive layer contains a mixture of compounds represented by Formula (1) having different n and (Rp+Rs) is not more than 99%, wherein Rp is a ratio of a component having the maximum content in the mixture and Rs is a ratio of a component having the content next to the maximum content in percent.Type: ApplicationFiled: March 22, 2004Publication date: September 30, 2004Applicant: Konica Minolta Holdings, Inc.Inventors: Tomoko Sakimura, Toyoko Shibata
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Publication number: 20040180280Abstract: A photoreceptor including a photosensitive layer including a specific diamine compound, or a photoreceptor including an electroconductive substrate; a photosensitive layer located overlying the electroconductive substrate; and optionally a protective layer located overlying the photosensitive layer, wherein an outermost layer of the photoreceptor includes a filler, an organic compound having an acid value of from 10 to 700 mgKOH/g and a specific diamine compound. An image forming method, an image forming apparatus and a process cartridge using the photoreceptor are also provided. A method for manufacturing the photoreceptor including the steps of preparing a coating liquid including the filler, the organic compound, the specific diamine compound and an antioxidant; and coating the coating liquid is also provided.Type: ApplicationFiled: March 4, 2004Publication date: September 16, 2004Inventors: Takaaki Ikegami, Tomoyuki Shimada, Yasuo Suzuki
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Publication number: 20040170911Abstract: An electrophotographic photoreceptor including an electroconductive substrate and a photosensitive layer on the electroconductive substrate, wherein the photosensitive layer includes at least a compound having a substituted or unsubstituted alkylamino group and a charge transport material, and wherein an oxidation potential (Eox1) of the substituted or unsubstituted alkylamino group and an oxidation potential (Eox2) of the charge transport material satisfy the following relationship (I):Type: ApplicationFiled: February 24, 2004Publication date: September 2, 2004Inventors: Tomoyuki Shimada, Takaaki Ikegami, Yasuo Suzuki
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Patent number: 6777148Abstract: Disclosed are a novel organic photoconductive material suitable as a charge-transporting material in a photosensitive layer of an electrophotographic photoreceptor or usable in various display devices, and an electrophotographic photoreceptor which uses the above organic photoconductive material in a photosensitive layer and which exhibits a high charge potential and high sensitivity and also exhibits little or almost no change in various properties in repeated use and can exhibit stabilized performances. The present invention provides an organic photoconductive material comprising a compound having a specific structure and an electrophotographic photoreceptor having a photosensitive layer containing the above photoconductive material.Type: GrantFiled: October 21, 2002Date of Patent: August 17, 2004Assignee: Mitsubishi Paper Mills LimitedInventors: Tatsuya Kodera, Koichi Torizuka
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Publication number: 20040152002Abstract: Improved organophotoreceptor comprises an electrically conductive substrate and a photoconductive element on the electrically conductive substrate, the photoconductive element comprising:Type: ApplicationFiled: December 30, 2003Publication date: August 5, 2004Inventors: Zbigniew Tokarski, Nusrallah Jubran, Vytautas Getautis, Maryte Daskeviciene, Valentas Gaidelis, Vygintas Jankauskas
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Publication number: 20040142257Abstract: An organic optoelectronic device includes a solution coatable thin film having a hole transporting material, an electron transporting material, and a photogenerating component uniformly dispersed therein. The thin film is about 0.2 microns or less, and can be spin-coated onto a substrate and further coated with electrodes.Type: ApplicationFiled: January 21, 2003Publication date: July 22, 2004Applicant: XEROX CORPORATIONInventor: Andronique Ioannidis
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Patent number: 6756169Abstract: A member including for example, a supporting layer and a single photogenerating layer, the photogenerating layer comprising particles including hydroxygallium phthalocyanine phthalocyanine Type V, x polymorph metal free phthalocyanine, or chlorogallium phthalocyanine dispersed in a matrix comprising an arylamine hole transporter and an electron transporter selected from the group consisting of N,N′bis(1,2-dimethylpropyl)-1,4,5,8-naphthalenetetracarboxylic diimide, 1,1′-dioxo-2-(4-methylphenyl)-6-phenyl-4-(dicyanomethylidene)thiopyran, and a quinone selected from the group consisting of carboxybenzylhaphthaquinone, and tetra (t-butyl) diphenoquinone, and mixtures thereof, and a film forming binder.Type: GrantFiled: July 23, 2002Date of Patent: June 29, 2004Assignee: Xerox CorporationInventors: Liang-Bih Lin, Cindy C. Chen, James M. Duff, Timothy P. Bender, Harold F. Hammond, James M. Markovics, Linda L. Ferrarese, John S. Chambers, Anna M. Main
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Patent number: 6749979Abstract: An electrophotography photosensitive body has a single layer photosensitive layer on top of a conductive substrate, directly or via an undercoat layer. The single layer photosensitive layer contains at least a resin binder, a charge generating substance, and a charge transport substance, wherein at least one of the charge generating substances is a titanyl phthalocyanine, which, in a x-ray powder diffraction spectrum having a radiation source of CuK &agr; and within a range of a Bragg angle 2&thgr;=5˜35°, a ratio, R, of a value, P, of a diffraction intensity of a highest peak and a value, B, of a diffraction intensity of the background satisfies the equation R=(P−B)/B≦7.0. The resulting electrophotographic photosensitive layer shows excellent electrical properties with positive charging as well as excellent stability when repeatedly used.Type: GrantFiled: May 21, 2001Date of Patent: June 15, 2004Inventors: Masaru Takeuchi, Kenichi Ohkura
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Publication number: 20040101770Abstract: The invention is to provide an organic photoconductive material capable of realizing electrophotographic photoreceptors of high reliability that have high charge potential, high sensitivity, good responsiveness to light and good durability, of which the characteristics do not lower even when they are driven at low temperatures or at high speed and even when they are exposed to light, and to provide an electrophotographic photoreceptor that comprises the material and an image-forming apparatus. An organic photoconductive material of the following general formula (1), for example, an enamine compound of the following structural formula (1-1) is produced. Using the organic photoconductive material for the charge-transporting substance to be in a photosensitive layer on a conductive support, an electrophotographic photoreceptor is fabricated, and this is mounted on an image-forming apparatus.Type: ApplicationFiled: September 3, 2003Publication date: May 27, 2004Applicant: SHARP KABUSHIKI KAISHAInventors: Takatsugu Obata, Akihiro Kondoh, Kazuya Ishida
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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: 20030235771Abstract: A single layered electrophotographic photoreceptor includes a photosensitive layer having at least a charge generating material, a hole transporting material, an electron transporting material, and a binder on a conductive support. The photosensitive layer includes a peculiar charge transfer complex (CT-complex) formed by the hole transporting material and the electron transporting material.Type: ApplicationFiled: June 4, 2003Publication date: December 25, 2003Applicant: SAMSUNG Electronics Co., Ltd.Inventors: Saburo Yokota, Hwan-Koo Lee, Kyung-Yol Yon, Beom-Jun Kim, Nam-Jeong Lee
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Publication number: 20030232264Abstract: Improved organophotoreceptors comprise:Type: ApplicationFiled: May 7, 2003Publication date: December 18, 2003Inventors: Zbigniew Tokarski, Nusrallah Jubran, Vytautas Getautis, Edmundas Montrimas, Maryte Daskeviciene, Valentas Gaidelis, Vygintas Jankauskas
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Publication number: 20030232263Abstract: The present invention relates to an electrophotographic photosensitive member having a support and provided thereon a photosensitive layer. The photosensitive layer contains a high-molecular weight charge-transporting material having a specific repeating structural unit. The high-molecular weight charge-transporting material has a weight-average molecular weight Mw of 1,500 or more and an energy level of highest occupied molecular orbital, EHOMO, of from −8.3 eV or more to −8.0 eV or less as found by semiempirical molecular-orbital calculation. The present invention also relates to a process cartridge and an electrophotographic apparatus which have such an electrophotographic photosensitive member.Type: ApplicationFiled: April 25, 2003Publication date: December 18, 2003Inventors: Harunobu Ogaki, Akira Yoshida, Takakazu Tanaka, Itaru Takaya, Yuka Ishiduka
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Publication number: 20030232261Abstract: This invention relates to a novel organophotoreceptor that includes:Type: ApplicationFiled: May 7, 2003Publication date: December 18, 2003Inventors: Zbigniew Tokarski, Nusrallah Jubran, Vytautas Getautis, Jonas V. Sidaravicius, Edmundas Montrimas, Maryte Daskeviciene, Valentas Gaidelis, Vygintas Jankauskas, Albina Stanisauskaite
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Publication number: 20030224270Abstract: 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: June 3, 2003Publication date: December 4, 2003Applicant: MITSUBISHI CHEMICAL CORPORATIONInventors: Teruyuki Mitsumori, Akiteru Fujii, Mamoru Nozomi, Satoshi Kato, Yuuta Kamano
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Publication number: 20030219662Abstract: Charge transport compounds are described that have a multiple number of hydrazone-bridged heterocyclic groups (especially julolidine groups, carbazole groups, triarylamine groups and (N,N-disubstituted)arylamine groups such as dialkarylamine groups (e.g. dimethylphenylamine; methylethylphenylamine, dipropylphenylamine, ethylepropylphenylamine, ethylbutylnaphthylamine, etc.), alkyldiarylamine groups (e.g. methyldiphenylamino, ethyldiphenylamino, etc), and triarylamino groups (e.g., triphenyl amino, trinaphthylamino, etc)) connected by a central bridging group.Type: ApplicationFiled: May 30, 2003Publication date: November 27, 2003Applicant: SAMSUNG Electronics Co. Ltd.Inventors: Nusrallah Jubran, Zbigniew Tokarski, Kam Law, Vytautas Getautis, Jonas Sidaravicius, Osvaldas Paliulis, Valentas Gaidelis, Vygintas Jankauskas
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Publication number: 20030215728Abstract: Improved organophotoreceptor include:Type: ApplicationFiled: March 6, 2003Publication date: November 20, 2003Inventors: Nusrallah Jubran, Zbigniew Tokarski, Kam W. Law
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Patent number: 6608228Abstract: Disclosed are highly efficient multiphoton absorbing compounds and methods of their use. The compounds generally include a bridge of pi-conjugated bonds connecting electron donating groups or electron accepting groups. The bridge may be substituted with a variety of substituents as well. Solubility, lipophilicity, absorption maxima and other characteristics of the compounds may be tailored by changing the electron donating groups or electron accepting groups, the substituents attached to or the length of the pi-conjugated bridge. Numerous photophysical and photochemical methods are enabled by converting these compounds to electronically excited states upon simultaneous absorption of at least two photons of radiation. The compounds have large two-photon or higher-order absorptivities such that upon absorption, one or more Lewis acidic species, Lewis basic species, radical species or ionic species are formed.Type: GrantFiled: April 15, 1999Date of Patent: August 19, 2003Assignee: California Institute of TechnologyInventors: Brian Cumpston, Matthew Lipson, Seth R. Marder, Joseph W. Perry
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Publication number: 20030148201Abstract: Disclosed are a novel organic photoconductive material suitable as a charge-transporting material in a photosensitive layer of an electrophotographic photoreceptor or usable in various display devices, and an electrophotographic photoreceptor which uses the above organic photoconductive material in a photosensitive layer and which exhibits a high charge potential and high sensitivity and also exhibits little or almost no change in various properties in repeated use and can exhibit stabilized performances.Type: ApplicationFiled: October 21, 2002Publication date: August 7, 2003Inventors: Tatsuya Kodera, Koichi Torizuka
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Patent number: 6593047Abstract: A single-layer type electrophotosensitive material comprising a conductive substrate and a photosensitive layer made of a binder resin containing at least an electric charge generating material and a hole transferring material and an electron transferring material as an electric charge transferring material, which is formed on the conductive substrate, characterized in that the binder resin contains a polycarbonate resin having a repeating structural unit represented by the general formula [1] and the solid content of the hole transferring material and the electron transferring material is not less than 30% by weight and not more than 50% by weight relative to the entire solid content, exhibits good wear resistance with respect to the photosensitive layer and is also superior in durability.Type: GrantFiled: August 31, 2001Date of Patent: July 15, 2003Assignee: Kyocera Mita CorporationInventors: Jun Azuma, Yukimasa Watanabe, Hisakazu Honma, Ayako Yashima, Maki Uchida, Kyoichi Nakamura
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Publication number: 20030129513Abstract: Charge transport compounds are described that have a multiple number of hydrazone-bridged heterocyclic groups (especially julolidine, carbazole and/or triarylmethane groups) connected by a central bridging group.Type: ApplicationFiled: September 24, 2001Publication date: July 10, 2003Applicant: Samsung Electronics Co., Ltd.Inventors: Nusrallah Jubran, Hwan Koo Lee, Kam W. Law
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Patent number: 6555959Abstract: A material for a light emitting device which is a compound represented by the following formula (I): wherein Ar1 and Ar6, which are the same or different, each represents a divalent aryl group or a divalent heterocyclic group; R2, R3, R7 and R8, which are the same or different, each represents an aryl group, a heterocyclic group or an aliphatic hydrocarbon group; R4a, R5a, R9a and R10a, which are the same or different, each represents a hydrogen atom or a monovalent group, and at least one of R4a, R5a, R9a and R10a represents an electron withdrawing group having a Hammett's &sgr;p value of 0.Type: GrantFiled: September 29, 2000Date of Patent: April 29, 2003Assignee: Fuji Photo Film Co., Ltd.Inventor: Kazumi Nii
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Publication number: 20030064308Abstract: The present invention intends to provide a TPD derivative being excellent in electric properties as a compound due to its extremely less content of impurities (TPD analogues) as well as being excellent in film-forming property due to its low crystallinity.Type: ApplicationFiled: September 19, 2002Publication date: April 3, 2003Inventors: Yoshio Kita, Yasuhiro Yamasaki
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Patent number: 6485873Abstract: A biphenyl derivative is included in a photosensitive layer of an electrophotographic photoconductor. The electrophotographic photoconductor includes a single-layer photosensitive layer coated on a conductive substrate. The photosensitive layer includes a resin binder, a charge generation substance, a hole transport substance, and an electron transport substance. An electrophotographic apparatus using such an electrophotographic photoconductor has excellent electrical characteristics in a positive chargine system and is stable in repeated use.Type: GrantFiled: April 27, 2000Date of Patent: November 26, 2002Assignee: Fuji Electric Imaging Device Co., Ltd.Inventors: Kenichi Ohkura, Seizou Kitagawa, Masaru Takeuchi
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Publication number: 20020119385Abstract: Disclosed is a single-layer type electrophotosensitive material comprising a conductive substrate and a photosensitive layer made of a binder resin containing at least an electric charge generating material and an electric charge transferring material, which is formed on the conductive substrate, wherein an oxygen transmission rate of the binder resin is not more than 35 cc·mm/m2·day·atom, wherein it is preferred that a mobility at an electric field strength of 5×105 V/cm of the hole transferring material is not less than 5×10−6 cm2/V/sec and a solid content of the electric charge transferring material is not less than 30% by weight and not more than 50% by weight based on the whole solid content; said electrophotosensitive material has good ozone resistance and does not cause defects such as image black belt due to lowering of the charge capability, an ozone of which is 5.0 ppm at most, and is also superior in sensitivity and wear resistance.Type: ApplicationFiled: December 12, 2001Publication date: August 29, 2002Inventors: Jun Azuma, Yukimasa Watanabe, Hisakazu Honma, Ayako Yashima, Maki Uchida, Eiichi Miyamoto
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Patent number: 6432595Abstract: The present invention relates to a positive charging single-layer type electrophotosensitive material comprising a conductive substrate and a photosensitive layer formed on the conductive layer, the photosensitive layer containing a phthalocyanine compound as an electric charge generating material, wherein a large half-life exposure between a half-life exposure on positive charging and a half-life exposure on negative charging is four times or less as much as that of the other half-life exposure.Type: GrantFiled: November 22, 2000Date of Patent: August 13, 2002Assignee: Kyocera Mita CorporationInventors: Hirofumi Kawaguchi, Yuji Tanaka, Yukikatsu Imanaka, Nobuko Akiba
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Patent number: 6416915Abstract: An electrophotographic photosensitive member is provided by forming a photosensitive layer on an electroconductive support. The photosensitive layer is provided with particularly excellent durability while retaining good electrophotographic performances when formed as a layer comprising a polymerizate of a hole-transporting compound having at least two chain polymerization function groups in its molecule represented by formula (1) below: &Parenopenst;P1&Parenclosest;aA&Parenopenst;Z—(P2)d)b (1), wherein A denotes a hole-transporting group, P1 and P2 independently denote a chain polymerization function group and Z denotes a bonding organic group; a, b and d are independently an integer of at least 0 satisfying a+b×d≧2 provided that if a≧2. plural groups P1 can be identical or different; if b≧2, plural groups Z can be identical or different; and if b×d≧2, plural groups P2 can be identical or different.Type: GrantFiled: November 12, 1999Date of Patent: July 9, 2002Assignee: Canon Kabushiki KaishaInventors: Toshihiro Kikuchi, Akio Maruyama, Hiroki Uematsu