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71. 发明专利

JPH01257962A ELECTROPHOTOGRAPHIC SENSITIVE BODY 失效
公开(公告)号：JPH01257962A
公开(公告)日：1989-10-16
申请号：JP8521588
申请日：1988-04-08
申请人： FUJI XEROX CO LTD
发明人： AKASAKI YUTAKA , SATO KATSUHIRO , TANAKA HIROYUKI , NUKADA KATSUMI , TAHO FUMIAKI
IPC分类号： G03G5/06
摘要： PURPOSE:To obtain an electrophotographic sensitive body good in chargeability, rapid in potential decay due to exposure to light, high in sensitivity, and further small in dependence of potential decay on an electric field by combining an electric charge generating layer containing a specified bisazo pigment with a charge transfer layer containing a benzidine derivative. CONSTITUTION:The charge generating layer contains one of the bisazo pigments represented by formula I and the charge transfer layer contains one of the benzidine derivatives represented by formula II. In formulae I and II, X is optionally substituted aralkyl or the like; R1 is H, alkyl, alkoxy, each of R2 and R3 is H, alkyl, alkoxy, halogen, alkoxycarbonyl, or substituted amino, when R1 is H; and each is H, methyl, alkoxy, halogen, alkoxycarbonyl, or substituted amino, when R1 is alkyl or alkoxy, thus permitting the obtained electrophotographic sensitive body to be freed of trailing of potential and almost freed of residual potential.

72. 发明专利

JPH01257957A ELECTROPHOTOGRAPHIC SENSITIVE BODY 失效
公开(公告)号：JPH01257957A
公开(公告)日：1989-10-16
申请号：JP8521088
申请日：1988-04-08
申请人： FUJI XEROX CO LTD
发明人： AKASAKI YUTAKA , SATO KATSUHIRO , TANAKA HIROYUKI , TAHO FUMIAKI , NUKADA KATSUMI
IPC分类号： G03G5/06
摘要： PURPOSE:To obtain an electrophotographic sensitive body almost freed of residual potential by combining an electric charge generating layer containing a specified bisazo pigment with a charge transfer layer containing a benzidine derivative. CONSTITUTION:The electrophotographic sensitive body comprises the charge generating layer containing one of the bisazo pigments represented by formula I and the charge transfer layer containing one of the benzidine derivatives represented by formula II. In formulae I and II, A is an aromatic coupler component; one of R1 and R2 is H or the like and the other of them is alkyl or the like; each of R3 and R6-R9 is alkyl or the like; and one of R4 and R5 is >=2C alkyl and the other is H or the like, and said benzidine derivative can be embodied by formula III, thus permitting the electrophotographic sensitive body to be superior in chargeability, rapid in decay of potential due to exposure to light, high in sensitivity, small in dependence of the potential decay on the electric field, easy to cause photodecay, even when low in potential, small in trailing of potential, and almost freed of residual potential.

73. 发明专利

JPH01257952A ELECTROPHOTOGRAPHIC SENSITIVE BODY 失效
公开(公告)号：JPH01257952A
公开(公告)日：1989-10-16
申请号：JP8520588
申请日：1988-04-08
申请人： FUJI XEROX CO LTD
发明人： AKASAKI YUTAKA , SATO KATSUHIRO , TANAKA HIROYUKI , TAHO FUMIAKI , NUKADA KATSUMI
IPC分类号： G03G5/06
摘要： PURPOSE:To obtain an electrophotographic sensitive body almost freed of residual potential by combining an electric charge generating layer containing a specified bisazo pigment with a charge transfer layer containing a benzidine derivative. CONSTITUTION:The electrophotographic sensitive body comprises the charge generating layer containing one of the bisazo pigments represented by formula I and II and the charge transfer layer containing one of the benzidine derivatives represented by formula III. In formulae I-III, each of R1 and R2 is H or the like; each of X and Y is H or cyano; R3 is H or alkoxy; A is an aromatic coupler residue; R4 is alkyl or alkoxy; and one of R5 and R6 is H or the like, and the other is >=2C alkyl, and the benzidine derivative is embodies by formula IV, thus permitting the electrophotographic sensitive body to be superior in chargeability, rapid in decay of potential due to exposure to light, high in sensitivity, small in dependence of the potential decay on the electric field, easy to cause photodecay, even when low in potential, small in trailing of potential, and almost freed of residual potential.

74. 发明专利

JPS6379860A PRODUCTION OF TETRACYANOANTHRAQUINODIMETHANE BASED CHARGE-TRANSFER COMPLEX 失效
公开(公告)号：JPS6379860A
公开(公告)日：1988-04-09
申请号：JP22376686
申请日：1986-09-24
申请人： FUJI XEROX CO LTD , MUKAI TOSHIO
发明人： AKASAKI YUTAKA , SATO KATSUHIRO , YABUUCHI NAOYA , TANAKA HIROYUKI , NUKADA KATSUMI , MUKAI TOSHIO , YAMASHITA TAKAO , SUZUKI TAKANORI
IPC分类号： G03G5/06 , B01J31/00 , C07C67/00 , C07C253/00 , C07C255/34 , C07C255/35 , C07C255/41 , C07C255/42 , C07C255/52 , C07C255/57
摘要： PURPOSE:To obtain the titled compound readily capable of isolating as a solid or crystal and useful as an organic electronic material, by dissolving a specific tetracyanoanthraquinodimethane and an excess electron-donating compound in a specific solvent and removing the solvent. CONSTITUTION:A tetracyanoanthraquinodimethane (TCNAQ) expressed by the formula (R is halogen, cyano, nitro, alkyl, aryl or alkoxycarbonyl; n is 2 and m is 0 or n is 1 and m is 1) such as 2,6-dichloro TCNAQ, etc., and an excess electron-donating compounded such as naphthalene, etc., are dissolved in a mixed solvent of a solvent such as methylene chloride, etc., soluble in both compounds and a poor solvent such as alcohol, CCl4, etc., or once dissolved in the soluble solvent and the poor solvent is added to the solution and then the solvent is removed to provide the aimed complex which is a crystalline solid having 100-300 deg.C melting point, showing spectrum particular to the complex, colored in purple, yellow, orange, green, etc., and having high electric conductivity.

75. 发明专利

JPS6372665A PRODUCTION OF ELECTRIC CHARGE TRANSPORTING MATERIAL FOR ELECTROPHOTOGRAPHY 失效
公开(公告)号：JPS6372665A
公开(公告)日：1988-04-02
申请号：JP21406386
申请日：1986-09-12
申请人： FUJI XEROX CO LTD , MUKAI TOSHIO
发明人： AKASAKI YUTAKA , SATO KATSUHIRO , YABUUCHI NAOYA , TANAKA HIROYUKI , NUKADA KATSUMI , MUKAI TOSHIO , YAMASHITA TAKAO , SUZUKI TAKANORI
IPC分类号： G03G5/06 , B01J31/00 , C07C67/00 , C07C253/00 , C07C255/34 , C07C255/35 , C07C255/41 , C07C255/42 , C07C255/52 , C07C255/57
摘要： PURPOSE:To obtain an anthraquinodimethane derivative having improved electron transporting properties, capable of transporting electrons and electron holes, in high yield, by reacting malononitrile with anthraquinone derivative in the presence of titanium tetrachloride and a tertiary organic base. CONSTITUTION:A compound shown by formula I is reacted with a compound shown by formula II (R is halogen, alkyl, aryl, aralkyl, oxyalkyl, carboxyalkyl, OH, substituted amino, carboxyl, CN, NO2, etc.; m is 1 when n=1 and m is 0 when n=2) in the presence of titanium tetrachloride and a tertiary organic base (e.g. pyridine) in a proper solvent at reflux temperature to give the aimed compound such as 2,6-dichloroTCNAQ shown by formula III.

76. 发明专利

JPS6340161A ELECTROPHOTOGRAPHIC SENSITIVE BODY 失效
公开(公告)号：JPS6340161A
公开(公告)日：1988-02-20
申请号：JP18332086
申请日：1986-08-06
申请人： FUJI XEROX CO LTD
发明人： AKASAKI YUTAKA , SATO KATSUHIRO , YABUUCHI NAOYA , TANAKA HIROYUKI
IPC分类号： G03G5/05 , G03G5/06
摘要： PURPOSE:To improve solvent resistance, strength, heat resistance, wear resistance and the adhesiveness to the substrate or other layers of a photosensitive body by forming an electric charge transfer layer of a layer formed by incorporating a specific electric charge transfer material into an ester binder resin. CONSTITUTION:The electric charge transfer layer is composed of the layer formed by incorporating the electric charge transfer material expressed by the formula I into the ester binder resin. In the formula, R denotes a hydrogen atom, alkyl group, aralkyl group, heterocyclic group or the aryl group expressed by the formula II. In the formula II, R1-R5 are independent from each other and respectively denote a hydrogen atom, halogen atom, alkyl group, hydroxy group, alkoxy group, carboxyl group, acetyl group, substd. amino group or alkoxycarbonyl group. The adhesiveness of the substrate and the charge transfer layer under said substrate is thereby improved and the need for providing an adhesive layer is eliminated, by which the good electrical characteristics are obtd. The charge transfer layer on the surface has the excellent wear resistance even if a protective layer is not provided in the case of the photosensitive body for charging to a negative polarity; therefore, the good durability is obtd.

77. 发明专利

JPS62267748A BINDER RESIN FOR ELECTROPHOTOGRAPHIC SENSITIVE BODY 失效
公开(公告)号：JPS62267748A
公开(公告)日：1987-11-20
申请号：JP11061286
申请日：1986-05-16
申请人： FUJI XEROX CO LTD
发明人： AKASAKI YUTAKA , SATO KATSUHIRO , YABUUCHI NAOYA , TANAKA HIROYUKI
IPC分类号： G03G5/05
摘要： PURPOSE:To improve the dispersibility and dynamic strength of an electrostatic charge generating material and an electrostatic charge transferring material by using a specified polyaryl ester as a binding resin. CONSTITUTION:A polyaryl ester represented by the formula is used as a binding resin for the charge generating layer, the charge transferring layer or the intermediate layer of an electrophotographic sensitive body. In the formula, R is alkylene forming a 4-8C ring, each of X1-X4 is H, halogen or alkyl and n is a number regulating the average mol.wt. to 10,000-100,000. The binding resin has high fitness for a charge generating material and a charge transferring material and satisfactory adhesive properties to a metallic substrate as well as superior solvent resistance, strength and heat resistance, so a sensitive body having superior electrical and dynamic characteristics is obtd.

78. 发明专利

JPS62135840A ELECTROPHOTOGRAPHIC SENSITIVE BODY 失效
公开(公告)号：JPS62135840A
公开(公告)日：1987-06-18
申请号：JP27603085
申请日：1985-12-10
申请人： FUJI XEROX CO LTD
发明人： AKASAKI YUTAKA , SATO KATSUHIRO , YABUUCHI NAOYA , TANAKA HIROYUKI
IPC分类号： G03G5/05 , G03G5/06
摘要： PURPOSE:To improve electric characteristics by incorporating a specified compound as an electrostatic charge transfer material in a charge transfer layer and using an ester type resin for the binder resin of the charge transfer layer. CONSTITUTION:The charge transfer layer contains as the charge transfer material a substance represented by the formula shown on the right in which each of R1 and R2 is H or methyl. The ester type resin is used for the binder resin of the charge transfer layer. When a polymer blend or a polymer alloy is used for the binder resin, it is preferred to use a polyarylate resin, or a mixture of polyester carbonate and a polycarbonate in a mixing ratio of 90:10-10:90, and to use the binder resin of the charge transfer layer having a weight average molecular weight of, preferably, 25,000-120,000. It is preferred to set a charge generating layer to a film thickness of

79. 发明专利

JPS60258555A ELECTROPHOTOGRAPHIC SENSITIVE BODY 失效
公开(公告)号：JPS60258555A
公开(公告)日：1985-12-20
申请号：JP9276784
申请日：1984-05-11
申请人： FUJI XEROX CO LTD
发明人： TANAKA HIROYUKI , KIN ISHI , FUU RIYUUJIYUN , KIMURA SHIROU
IPC分类号： G03G5/043 , G03G5/06 , H01L51/42
摘要： PURPOSE:To obtain an electrophotographic org. sensitive body having high sensitivity and flat spectral sensitivity from a visible region to a near IR region and excellent mechanical strength such as wear resistance by providing a photosensitive layer contg. a specific squarium pigment to said body. CONSTITUTION:The squarium pigment expressed by the formula (R is OH or OCH3) is formed by vacuum deposition on a conductive substrate 1 or a charge generating layer 2 consisting of said pigment dispersed uniformly in a binder is formed on the substrate 1. An electrostatic charge transfer layer 3 consisting of an org. transfer material incorporated into a binder resin is formed on the layer 2. The layer 3 is otherwise formed first on the substrate 1, then the layer 2 is laminated thereon to provide the photosensitive layer 4. The electrophotrographic sensitive body having the high photosensitivity, the flat photosensitivity from the visible region to near IR region and the excellent wear resistance and mechanical strength is thus obtd.

80. 发明专利

JPS60258554A ELECTROPHOTOGRAPHIC SENSITIVE BODY 失效
公开(公告)号：JPS60258554A
公开(公告)日：1985-12-20
申请号：JP9276684
申请日：1984-05-11
申请人： FUJI XEROX CO LTD
发明人： TANAKA HIROYUKI , KIN ISHI , FUU RIYUUJIYUN , KIMURA SHIROU
IPC分类号： G03G5/043 , G03G5/06 , H01L51/42
摘要： PURPOSE:To obtain an org. photosensitive body having high sensitivity and flat spectral sensitivity from a visible region to a near IR region and excellent mechanical strength such as wear resistance by providing a photosensitive body contg. a specific squarium pigment to said body. CONSTITUTION:The squarium pigment expressed by the formula (R is -NHCO CH3 or -NHSO2CH3) is formed by vacuum deposition on a conductive substrate 1 or is dispersed into a biner resin to form an electrostatic charge generating layer 2. An electrostatic charge transfer layer 3 in which a charge transfer material, for example 1-phenyl-3-(p-diethylaminostyryl)-5-(p-diethylaminophenyl)- pyrazoline, etc. is mixed with a polycarbonate resin is formed on the layer 2. The layer 2 and 3 may be formed in reverse order on the substrate 1. The long- life electrophotographic sensitive body having the high sensitivity from the visible light region to the near IR region is thus obtd.

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