Additional Diverse Ring Hetero Atom In The Hetero Ring Patents (Class 430/77)
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Patent number: 4469768Abstract: An electrophotographic light-sensitive material with an electrophotographic light-sensitive layer containing a charge-generating material and a charge-transporting material is described.The material is characterized in that the charge-generating material is a compound represented by the general formula (I) or (II): ##STR1## (wherein the symbols are the same as defined in the claims).Type: GrantFiled: June 14, 1982Date of Patent: September 4, 1984Assignee: Fuji Photo Film Co., Ltd.Inventors: Seiji Horie, Masayoshi Nagata, Junji Nakano, Hideo Sato
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Patent number: 4463076Abstract: Electrically photosensitive complex cyanine colorant compounds, each comprising two merocyanine moieties joined by a cyanine moiety, are useful in electrically photosensitive materials for photoelectrophoretic (PEP) imaging processes. These compounds are symmetric or asymmetric and contain the structure: ##STR1## wherein: m and n, which are the same or different, are 0, 1 or 2;t and u, which are the same or different, are 0 or 1;p is 0, 1 or 2;R.sup.1 and R.sup.11, which are the same or different, represent an alkyl, aryl, aralkyl, alkaryl, carbocyclic or heterocyclic group or, when taken together and p is zero, are a one- or two-carbon alkylene bridge;R.sup.2 and R.sup.22, which are the same or different, represent an alkyl, aryl, aralkyl, alkaryl, carbocyclic or heterocyclic group;R.sup.3 and R.sup.33, which are the same or different, represent hydrogen or an alkyl group;R.sup.4 and R.sup.44, which are the same or different, represent hydrogen or an alkyl group;R.sup.4, which when taken together with R.sup.Type: GrantFiled: February 22, 1983Date of Patent: July 31, 1984Assignee: Eastman Kodak CompanyInventors: Steven G. Link, Frank G. Webster
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Patent number: 4454211Abstract: An electrophotographic photosensitive member is characterized by comprising a layer which contains at least one pyrazoline compound represented by the following formula (I) or (II): ##STR1## wherein m and n represent 0 or 1; when both m and n are 0, X.sub.1 represents a substituted or unsubstituted heterocyclic residue; R.sub.1 represents a substituted or unsubstituted aryl or heterocyclic residue; R.sub.2 and R.sub.3 each represent hydrogen or a substituted or unsubstituted aryl or heterocyclic residue; or they form spiropyrazoline cojointly with the carbon atom to which they are linked; and R.sub.5 represents hydrogen, a halogen, or a substituted or unsubstituted alkyl or aryl;when m is 1 and n is 0, X.sub.1 represents a substituted or unsubstituted heterocyclic residue; R.sub.1 and R.sub.2 each represent a substituted or unsubstituted aryl or heterocyclic residue; R.sub.3 represents hydrogen; and R.sub.4 and R.sub.Type: GrantFiled: June 1, 1982Date of Patent: June 12, 1984Assignees: Canon Kabushiki Kaisha, Copyer Kabushiki KaishaInventors: Yoshio Takasu, Shozo Ishikawa
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Patent number: 4450217Abstract: Novel chalcogenopentalene compounds having a tellurium atom in the 6a position, and methods of making chalcogenopentalenes having a tellurium or a selenium atom in the 6a position are disclosed. The chalcogenopentalene compounds are useful as sensitizers in electrophotographic compositions and elements containing an electron donor and as charge emitters in multilayer photoconductive elements.Type: GrantFiled: March 15, 1983Date of Patent: May 22, 1984Assignee: Eastman Kodak CompanyInventors: Michael R. Detty, Jerome H. Perlstein
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Patent number: 4450219Abstract: An electrophotographic photoreceptor is disclosed, which is comprised of a conductive support having thereon an electrophotographic photoreceptive layer containing a charge generating material and a charge transporting material. The charge generating material is a particular compound having both a barbituric acid nucleus or thiobarbituric acid nucleus and a heterocyclic ring residue.Type: GrantFiled: June 24, 1982Date of Patent: May 22, 1984Assignee: Fuji Photo Film Co., Ltd.Inventors: Seiji Horie, Junji Nakano, Hideo Sato
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Patent number: 4435492Abstract: In a complex type electrophotographic plate comprising an electroconductive support, superposed thereon a charge generating material (CGL) layer and a charge transport material layer superposed on the CGL layer when there is used as said charge transport material at least one compound of the formula:X--(CH.dbd.CH).sub.n --CH.dbd.Ywherein X is a heterocyclic group of the formula: ##STR1## Y is a heterocyclic group of the formula: ##STR2## these heterocyclic groups may be substituted by one or more lower alkyl groups, halogen atoms, or phenyl groups; Z is an oxygen, sulfur or selenium atom; R is an alkyl group having 1 to 7 carbon atoms; n is an integer of 1 or 2; and one hydrogen atom in the group of the formula --(CH.dbd.CH).sub.n -- may be substituted by an alkyl group having 1 to 4 carbon atoms, a halogen atom, a phenyl group, a styryl group or a group of the formula: ##STR3## electrophotographic characteristics such as light sensitivity, dark decay characteristics, repetition characteristics, etc.Type: GrantFiled: June 1, 1982Date of Patent: March 6, 1984Assignee: Hitachi, Ltd.Inventors: Shigeo Suzuki, Atsushi Kakuta, Yasuki Mori, Hirosada Morishita
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Patent number: 4427753Abstract: An electrophotographic photosensitive member comprises a layer containing at least one azo pigment represented by the following formula (I): ##STR1## in the formula, Cp represents a coupler residue; A.sub.1 and A.sub.2 each represent a divalent organic residue; n represents 0 or 1; and when n is 0, A.sub.3 represents substituted or unsubstituted alkyl, substituted or unsubstituted aryl, or --(CH.dbd.CH).sub.l --R', wherein R' is a substituted or unsubstituted heterocyclic ring residue an l is 0, 1 or 2, and when n is 1, A.sub.3 represents a divalent organic residue.Type: GrantFiled: May 24, 1982Date of Patent: January 24, 1984Assignee: Canon Kabushiki KaishaInventors: Naoto Fujimura, Takashi Tanaka, Takeshi Fujita, Masakazu Matsumoto, Norie Takebayashi, Yoshio Takasu, Shozo Ishikawa
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Patent number: 4423130Abstract: In an electrophotographic light-sensitive material having on a conductive support a light-sensitive layer composed of a charge generating material and a charge transporting material. A hydrazone compound is used as the charge transporting material for providing the light sensitive layer having high sensitivity and less residual surface potential. The light-sensitive layer is stable to oxidation by ozone generated by corona discharging as well as to heat and light, results in less dark decay of the surface potential. Furthermore, the layer shows less deviation in residual potential and sensitivity due to repeated use.Type: GrantFiled: March 11, 1982Date of Patent: December 27, 1983Assignee: Fuji Photo Film Co., Ltd.Inventors: Seiji Horie, Junji Nakano, Hideo Sato
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Patent number: 4423129Abstract: An electrophotographic photosensitive member is characterized by having a layer which contains at least one hydrazone compound represented by the following formula (1) or (2): ##STR1## wherein R.sub.11 represents substituted or unsubstituted naphthyl; R.sub.12 represents substituted or unsubstituted alkyl, substituted or unsubstituted aralkyl, or substituted or unsubstituted aryl; R.sub.13 represents hydrogen, alkyl, or alkoxy; R.sub.14 and R.sub.15 each represent substituted or unsubstituted alkyl, substituted or unsubstituted aralkyl, or substituted or unsubstituted aryl; n is 0 or 1; when n=1, R.sub.14 and R.sub.15, together with the nitrogen which links them, may complete a cyclic amino group; X represents a group necessary for completing a benzene ring or naphthalene ring; R.sub.21 and R.sub.22 each represent hydrogen, halogen, alkyl, alkoxy or disalkylamino; and R.sub.23, R.sub.24, R.sub.25, R.sub.26 and R.sub.Type: GrantFiled: November 30, 1981Date of Patent: December 27, 1983Assignee: Canon Kabushiki KaishaInventors: Yoshio Takasu, Kiyoshi Sakai, Minoru Mabuchi, Shozo Ishikawa, Katsunori Watanabe
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Patent number: 4420548Abstract: An electrophotographic photosensitive member is characterized by having a layer containing at least one of hydrazone group compounds represented by the following formula (1) or of ketazine group compounds represented by the following formula (2): ##STR1## In the formula, R.sub.11 and R.sub.12 independently of one another represent hydrogen, substituted or unsubstituted aryl, or substituted or unsubstituted heterocyclic radical; R.sub.13 and R.sub.14 independently of one another represent subsituted or unsubstituted alkyl, substituted or unsubstituted aralkyl, substituted or unsubstituted aryl, or substituted or unsubstituted heterocyclic radical; and R.sub.15 represents a divalent organic residue. ##STR2## In the formula, R.sub.21, R.sub.22, R.sub.23, and R.sub.24 independently one another represent substituted or unsubstituted alkyl, substituted or substituted aralkyl, or substituted or unsubstituted aryl, or R.sub.21 and R.sub.Type: GrantFiled: November 16, 1981Date of Patent: December 13, 1983Assignee: Canon Kabushiki KaishaInventors: Kiyoshi Sakai, Minoru Mabuchi, Toshiko Suzuki, Yuji Egarashi, Shozo Ishikawa
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Patent number: 4419428Abstract: An electrophotographic light-sensitive medium is described comprising at least an electrically conductive layer, a charge generation layer and a charge transport layer, the charge generation layer containing a dis-azo compound represented by Formula (1) wherein A represents a single bond, ##STR1## B represents a coupler having aromatic properties; and R represents a group selected from hydrogen, a halogen and a lower alkyl having 1 to 4 carbon atoms.Type: GrantFiled: May 18, 1981Date of Patent: December 6, 1983Assignees: Copyer Co., Ltd., Canon Inc.Inventors: Kazuharu Katagiri, Shozo Ishikawa, Katsunori Watanabe, Shigeto Ohta, Makoto Kitahara
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Patent number: 4418133Abstract: An organic photoconductive material represented by the formula ##STR1## wherein A is an atomic group necessary for completing a substituted or unsubstituted aromatic hydrocarbon ring, Ar is a substituted or unsubstituted group, and Cp is a coupler residue.Type: GrantFiled: March 4, 1982Date of Patent: November 29, 1983Assignee: Canon Kabushiki KaishaInventors: Kazuharu Katagiri, Shoji Umehara, Katsunori Watanabe, Shozo Ishikawa
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Patent number: 4415641Abstract: An electrophotographic light-sensitive element comprising a conductive support which supports a light-sensitive layer containing a carbazole derivative of the formula: ##STR1## wherein R.sub.1 is an aryl group, R.sub.2 is hydrogen, a halogen, an alkyl, an alkoxy, an amino or hydroxy group, and R.sub.3 is an aryl, or a heterocyclic group.Type: GrantFiled: March 2, 1982Date of Patent: November 15, 1983Assignee: Konishiroku Photo Industry Co., Ltd.Inventors: Satoshi Goto, Akira Kinoshita, Yoshiaki Takei, Yoshihide Fujimaki
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Patent number: 4413045Abstract: An electrophotographic photosensitive member is characterized by comprising a charge generation layer containing at least one disazo pigment represented by the following formula [I] and a charge transport layer containing at least one hydrazone compound represented by the following formula [II]: ##STR1## wherein A is a coupler residue, B represents hydrogen, halogen, alkyl, or alkoxy, and n is an integer of 1 to 4; ##STR2## wherein R.sub.1 represents N,N-dialkyl amino, or N,N-diarylamino, or N-alkyl-N-arylamino, or alkoxy or aryloxy, each being substituted or unsubstituted; R.sub.2 and R.sub.3 each represent alkyl, aralkyl, or aryl, each being substituted or unsubstituted, or R.sub.2 and R.sub.3, together with the nitrogen atom which links them, represent nitrogen-containing heterocyclic ring; R.sub.4 represents hydrogen, or alkyl, aralkyl, or aryl, each being substituted or unsubstituted; R.sub.5 represents hydrogen, alkyl, or alkoxy; and l is 0 or 1.Type: GrantFiled: May 24, 1982Date of Patent: November 1, 1983Assignee: Canon Kabushiki KaishaInventors: Shozo Ishikawa, Kazuharu Katagiri, Katsunori Watanabe, Kiyoshi Sakai, Makoto Kitahara
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Patent number: 4403025Abstract: An electrophotographic photoreceptor is described comprising an N-arylamino substituted hydrazone compound represented by formula (I), (II), or (III), in a light-sensitive layer thereof provided on a conductive support; formulae (I), (II), and (III) are as follows: ##STR1## wherein X represents O, S or N--R.sup.6 ; R.sup.1 and R.sup.2 each represents a non-substituted or a substituted straight or branched chain alkyl group containing from 1 to 12 carbon atoms, a non-substituted or a substituted straight or branched chain aralkyl group containing from 7 to 20 carbon atoms, or a non-substituted or a substituted aryl group, the aryl group including monovalent residues of monocyclic aromatic rings and condensed polycyclic aromatic rings having from 2 to 4 rings therein; R.sup.3, R.sup.4, R.sup.5, and R.sup.Type: GrantFiled: June 24, 1981Date of Patent: September 6, 1983Assignee: Fuji Photo Film Co., Ltd.Inventors: Seiji Horie, Masayoshi Nagata, Junji Nakano, Hideo Sato
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Patent number: 4399207Abstract: An electrophotographic photosensitive member having a layer containing at least one compound represented by the formula ##STR1## wherein X.sub.1 represents a residue necessary for completing a substituted or unsubstituted aromatic hydrocarbon ring; X.sub.2 represents a residue necessary for completing a substituted or unsubstituted heterocyclic ring; R.sub.1, R.sub.2, R.sub.3, and A each represent hydrogen, alkyl, aralkyl, or aryl, substituted or unsubstituted; and m is 0 or 1.Type: GrantFiled: July 22, 1982Date of Patent: August 16, 1983Assignee: Canon Kabushiki KaishaInventors: Kiyoshi Sakai, Minoru Mabuchi, Shozo Ishikawa, Makoto Kitahara
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Patent number: 4399206Abstract: An electrophotographic photosensitive member is characterized by having a photosensitive layer containing at least one disazo pigment represented by the formula ##STR1## wherein Cp represents a coupler residue; B.sub.1, B.sub.2, B.sub.1 ', and B.sub.2 ' independently of one another represent atoms or groups selected from the group consisting of hydrogen, halogen, lower alkyl, lower alkoxy, acylamino, and hydroxyl; and A represents ##STR2## (D.sub.1 and D.sub.Type: GrantFiled: September 30, 1981Date of Patent: August 16, 1983Assignee: Canon Kabushiki KaishaInventors: Kazuharu Katagiri, Katsunori Watanabe, Shozo Ishikawa, Makoto Kitahara
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Patent number: 4396695Abstract: An electrophotographic recording medium which consists essentially of an electrically conductive base and a photosemiconductive double layer which comprises a first layer containing charge carrier-producing dyes, and a second layer containing one or more compounds which are charge carrier-transporting when exposed to light, wherein the charge carrier-producing dyes are those of the general formula I ##STR1## where R.sup.1, R.sup.2 and R.sup.3 are each hydrogen, halogen, alkyl, nitro or cyano, R.sup.4 is phenyl, halophenyl, alkylphenyl, nitrophenyl or dialkylaminophenyl, and X is oxygen, sulfur, NH or N-phenyl, and the production of this recording medium.Type: GrantFiled: March 16, 1982Date of Patent: August 2, 1983Assignee: BASF AktiengesellschaftInventors: Manfred Dimmler, Gerhard Hoffmann, Dieter Buhl
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Patent number: 4396696Abstract: An electrophotographic plate comprising an electroconductive substrate and a photosensitive layer coated thereon, wherein said photosensitive layer comprises an azo compound represented by the general formula (I) ##STR1## wherein A is a divalent group of an aromatic hydrocarbon or a divalent group of a heterocyclic ring containing at least one nitrogen atom in the ring, Ar is an aromatic hydrocarbon group or a heterocyclic group which may be bonded through a connecting group, and n is an integer of 1, 2 or 3.Type: GrantFiled: March 31, 1982Date of Patent: August 2, 1983Assignee: Mitsubishi Chemical Industries LimitedInventors: Hideki Nagasaka, Tetsuo Murayama
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Patent number: 4391886Abstract: Disclosed are novel methine colorant materials having the structure ##STR1## Also disclosed is the use of such materials in electrophoretic migration imaging layers and processes.Type: GrantFiled: August 3, 1981Date of Patent: July 5, 1983Assignee: Eastman Kodak CompanyInventors: Mark D. Frishberg, James J. Krutak, Sr.
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Patent number: 4390611Abstract: An electrophotographic photosensitive member having a photosensitive layer is characterized in that said photosensitive layer contains azo pigments having at least one of azo groups linked to a coupler residue represented by the following formula [1] or [2]: ##STR1## wherein R.sub.1 and R.sub.3 independently represent hydrogen, substituted or unsubstituted alkyl, substituted or unsubstituted aralkyl, or substituted or unsubstituted aryl, and R.sub.2 and R.sub.4 independently represent substituted or unsubstituted aryl.Type: GrantFiled: September 22, 1981Date of Patent: June 28, 1983Inventors: Shozo Ishikawa, Kazuharu Katagiri, Katsunori Watanabe, Makoto Kitahara
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Patent number: 4389475Abstract: An electrophotographic recording medium which consists essentially of an electrically conductive base and a photosemiconductive double layer which comprises a first layer containing charge carrier-producing dyes, and a second layer containing one or more compounds which are charge carrier-transporting when exposed to light, wherein the charge carrier-producing dyes are those of the general formula ##STR1## where R.sup.1, R.sup.2, R.sup.3 and R.sup.4 are each hydrogen or a non-ionic substituent, X is the radical of a methyleneactive compound, or of an aliphatic, cycloaliphatic, araliphatic, aromatic or heterocyclic amine or hydrazine, and Z is hydrogen, methyl or phenyl, and the production of this recording medium.Type: GrantFiled: March 16, 1982Date of Patent: June 21, 1983Assignee: BASF AktiengesellschaftInventors: Gerhard Hoffmann, Peter Neumann
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Patent number: 4363859Abstract: An electrophotographic photoconductor comprises an electroconductive supporting material and a photoconductive layer containing a charge carrier producing pigment and a charge transporting material therein, which is formed on the electroconductive supporting material. As the charge carrier producing pigment, azo pigments and other materials which are known as the charge carrier producing pigments are employed. As the charge transporting material, anthracene compounds which are represented by the general formula ##STR1## are employed, wherein X represents H (hydrogen) or a halogen atom and R represents an unsubstituted phenyl radical, a substituted phenyl radial having a halogen substituent, a cyano substituent, a lower dialkyl amino substituent with one to four carbon atoms, a lower alkoxyl substituent with one to five carbon atoms, and nitro substituent, a napthyl radical, an anthryl radical, and a carbazoyl radical.Type: GrantFiled: October 13, 1978Date of Patent: December 14, 1982Assignee: Ricoh Company, Ltd.Inventors: Masaomi Sasaki, Kyoji Tsutsui
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Patent number: 4359515Abstract: An electrophotographic light-sensitive medium comprising a light-sensitive layer containing a dis-azo compound represented by Formula (1) ##STR1## wherein A represents a single chemical bond, a divalent hydrocarbon group containing a conjugated double bond, a divalent hydrocarbon group containing a nitrogen atom in a conjugated double bond, or a divalent heterocyclic group which may be condensed with a benzene ring or substituted and forms a conjugated double bond system in combination with the adjacent azomethine groups, and B and B', which may be the same or different, each represents a coupler having aromatic properties.Type: GrantFiled: February 25, 1981Date of Patent: November 16, 1982Assignees: Copyer Co., Ltd., Canon Inc.Inventors: Kazuharu Katagiri, Katsunori Watanabe, Shigeto Ohta, Shozo Ishikawa, Makoto Kitahara
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Patent number: 4356243Abstract: An electrophotographic light-sensitive medium is described comprising at least an electrically conductive layer, a charge generation layer and a charge transport layer, the charge generation layer containing a dis-azo compound represented by Formula (1) ##STR1## wherein A is a coupler having aromatic properties, and B is a group selected from hydrogen, halogen, lower alkyl having 1 to 4 carbon atoms and lower alkoxy having 1 to 4 carbon atoms.Type: GrantFiled: February 19, 1981Date of Patent: October 26, 1982Assignee: Copyer Co., Ltd.Inventors: Shozo Ishikawa, Kazuharu Katagiri, Katsunori Watanabe, Shigeto Ohta, Makoto Kitahara
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Patent number: 4264694Abstract: A photosensitive medium for electrophotography which comprises a support having thereon a photoconductive layer comprising an organic photoconductive material and containing in a dispersed state a cyanine pigment which functions as a photoconductor expressed by the following general formula (I) ##STR1## in which A represents ##STR2## wherein B represents an aromatic group, a halogen atom, a nitro group, a cyano group, an acetoxy group, a styryl group, an alkylthio group, an alkoxy group, ##STR3## in which Z represents --O--, --Se--, ##STR4## or --S--, R.sub.1, R.sub.2, R.sub.3 and R.sub.4, which may be the same or different, each represents an alkyl group or an allyl group, Y represents --S--, --Se--, --O--, ##STR5## X represents an anion, and the two benzene nuclei may include a carbocylic ring condensed therewith.Type: GrantFiled: March 13, 1978Date of Patent: April 28, 1981Assignee: Fuji Xerox Co., Ltd.Inventors: Lyong S. Pu, Hitoshi Kamoda
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Patent number: 4229510Abstract: A photoconductive polymer material having the following repeating unit: ##STR1## wherein R represents an alkyl group is disclosed.Type: GrantFiled: April 26, 1979Date of Patent: October 21, 1980Assignee: Fuji Photo Film Co., Ltd.Inventors: Syu Watarai, Kenichi Sawada, Takeshi Saida
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Patent number: 4192677Abstract: 1,3,4-oxadiazole derivative expressed by the general formula ##STR1## wherein R represents alkyl having 1-4 carbon atoms, dialkylamino having 1-4 carbon atoms, diarylamino, phenyl, styryl, halogenophenyl, nitrophenyl, alkylphenyl having 1-4 carbon atoms, alkoxyphenyl having 1-4 carbon atoms, cyanophenyl, carboxylic ester substituted phenyl, dialkylaminophenyl having 1-4 carbon atoms, naphthyl, anthryl, or heterocyclic radical, is a photoconductive substance with high sensitivity and is a compound useful as a constituent of electrophotographic plate.Type: GrantFiled: November 6, 1978Date of Patent: March 11, 1980Assignee: Ricoh Co., Ltd.Inventors: Mitsuo Okazaki, Akihiro Yamaguchi, Masaomi Sasaki