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    • 1. 发明授权
    • Electrophotographic photosensitive body
    • 电子照相感光体
    • US07604913B2
    • 2009-10-20
    • US11572001
    • 2005-07-15
    • Hiroyuki TajimaYuuta Kumano
    • Hiroyuki TajimaYuuta Kumano
    • G03G5/04
    • G03G5/0672G03G5/056G03G5/0592G03G5/0596G03G5/0614
    • Disclosed is an electrophotographic photoreceptor which is excellent in wear resistance and electrical characteristics. Specifically disclosed is an electrophotographic photoreceptor containing a polyester resin in a photosensitive layer provided on an electroconductive substrate. The polyester resin is composed of a copolymer represented by the general formula 1 below, which has a viscosity average molecular weight (Mv) of 10,000-300,000 and contains a diphenyl ether 4,4′-dicarboxylic acid component and a bivalent phenol component.[Chemical Formula 1] A-Bn  (1) In the general formula 1, A represents a diphenyl ether 4,4′-dicarboxylic acid residue represented by the formula A below, and B represents a bivalent phenol residue represented by the formula B below. In the formula A, each of Ra1 and Ra2 independently represents a hydrogen atom or a monovalent substituent which may have a substituent, and each of n and m is independently an integer from 0 to 4. In the formula B, each of R1 and R2 independently represents one selected from the group consisting of a hydrogen atom, an alkyl group, an aryl group, a halogen group, and an alkoxy group.
    • 公开了耐磨性和电特性优异的电子照相感光体。 具体公开了一种在设置在导电性基体上的感光层中含有聚酯树脂的电子照相感光体。 聚酯树脂由下述通式1表示的共聚物组成,其粘均分子量(Mv)为10,000-300,000,并含有二苯基醚4,4'-二羧酸组分和二价苯酚组分。 [化学式1] AB n(1)在通式1中,A表示二苯醚4,4'-二羧酸残基 由下式A表示,B表示由下式B表示的二价酚残基。 在式A中,Ra1和Ra2各自独立地表示氢原子或可以具有取代基的一价取代基,n和m各自独立地为0〜4的整数。在式B中,R 1和R 2各自 独立地表示选自氢原子,烷基,芳基,卤素基和烷氧基的一个基团。
    • 3. 发明申请
    • Electrophotographic photoreceptor
    • 电子照相感光体
    • US20060078810A1
    • 2006-04-13
    • US11288195
    • 2005-11-29
    • Yuuta Kumano
    • Yuuta Kumano
    • G03G5/05
    • G03G9/08755
    • It is to provide a high performance and ultralife electrophotographic photoreceptor, which is less likely to be chemically and electrically deteriorated even when repeatedly used, which can maintain excellent electric characteristics, the photosensitive layer surface of which is less likely to be abraded or scarred or undergo film peeling due to e.g. contact with a developing apparatus, a developer or paper, and which is excellent also in mechanical characteristics. An electrophotographic photoreceptor comprising an electroconductive substrate and a photosensitive layer formed thereon, characterized in that the photosensitive layer contains a polyester resin which is a copolymerized polyester resin having a repeating ester structure (A) comprising a bivalent phenol residue represented by the following formula (1) and an aromatic dicarboxylic acid residue represented by the following formula (3), and a repeating ester structure (B) comprising a bivalent phenol residue represented by the following formula (2) and an aromatic dicarboxylic acid residue represented by the formula (3), and the repeating ester structure (A) has at least two types of repeating ester structures:
    • 它是提供一种高性能和超小型电子照相感光体,其即使在重复使用时也不太可能化学和电气劣化,其可以保持优异的电特性,其感光层表面不太可能磨损或疤痕或经受 由于例如薄膜剥落 与显影装置,显影剂或纸接触,其机械性能也优异。 一种电子照相感光体,包括导电性基体和形成在其上的感光层,其特征在于,感光层含有聚酯树脂,该聚酯树脂是具有重复酯结构的共聚聚酯树脂(A),其包含由下式(1)表示的二价苯酚残基 )和由下式(3)表示的芳族二羧酸残基和由下式(2)表示的二价酚残基和由式(3)表示的芳族二羧酸残基的重复酯结构(B) ,重复酯结构(A)具有至少两种重复酯结构:
    • 4. 发明申请
    • Electrophotographic photoreceptor
    • 电子照相感光体
    • US20060073400A1
    • 2006-04-06
    • US11293387
    • 2005-12-05
    • Yuuta Kumano
    • Yuuta Kumano
    • G03G5/05
    • G03G5/0674C08G63/193G03G5/056G03G5/0592G03G5/0596G03G5/0614G03G5/0672
    • It is to provide a high performance and ultralife electrophotographic photoreceptor, which is less likely to be chemically and electrically deteriorated even when repeatedly used, which can maintain excellent electric characteristics, the photosensitive layer surface of which is less likely to be abraded or scarred or undergo film peeling due to e.g. contact with a developing apparatus, a developer or paper, and which is excellent also in mechanical characteristics. An electrophotographic photoreceptor, which contains a polyester resin having a repeating structure comprising a bivalent phenol residue represented by the following formula (1) and an aromatic dicarboxylic acid residue represented by the following formula (2): in the formula (1), each of R1 to R4 which are independent of one another, represents a hydrogen atom or an alkyl group, and R5 represents an alkyl group.
    • 它是提供一种高性能和超小型电子照相感光体,其即使在重复使用时也不太可能化学和电气劣化,其可以保持优异的电特性,其感光层表面不太可能磨损或疤痕或经受 由于例如薄膜剥落 与显影装置,显影剂或纸接触,其机械性能也优异。 一种电子照相感光体,其含有具有由下式(1)表示的二价酚残基和下述式(2)表示的芳香族二羧酸残基的重复结构的聚酯树脂:在式(1)中, R 1〜R 4彼此独立地表示氢原子或烷基,R 5表示烷基。
    • 7. 发明授权
    • Electrophotographic photoreceptor
    • 电子照相感光体
    • US07718337B2
    • 2010-05-18
    • US12189929
    • 2008-08-12
    • Yuuta Kumano
    • Yuuta Kumano
    • G03G5/05
    • G03G5/0674C08G63/193G03G5/056G03G5/0592G03G5/0596G03G5/0614G03G5/0672
    • The present invention relates to an electrophotographic photoreceptor comprising an electroconductive substrate and a photosensitive layer formed thereon, wherein the photosensitive layer contains a polyester resin consisting of a repeating ester structure consisting of at least one bivalent phenol residue having formula (1) and at least one of an aromatic dicarboxylic acid residue having formula (2): where, each of R1 to R4, which are independent of one another, represents hydrogen or a methyl group, and R5 represents a methyl group, where (i) R1 to R4 are hydrogen atoms; or (iii) R1 and R3 are methyl groups and R2 and R4 are hydrogen atoms, and where the polyester resin is a copolymer, and an amount of the repeating ester structure consisting of the bivalent phenol residue having the above formula (1) and the aromatic dicarboxylic acid residue having the above formula (2) is at least 10 wt % of the entire polyester resin of the copolymer.
    • 本发明涉及一种电子照相感光体,其包含导电性基体和形成在其上的感光层,其中感光层含有由至少一种具有式(1)的二价酚残基和至少一个 具有式(2)的芳族二羧酸残基:其中,彼此独立的R 1至R 4各自表示氢或甲基,R 5表示甲基,其中(i)R 1至R 4为氢 原子 或(iii)R 1和R 3是甲基,R 2和R 4是氢原子,并且其中聚酯树脂是共聚物,以及由具有上述式(1)的二价酚残基和 具有上述式(2)的芳族二羧酸残基为共聚物的整个聚酯树脂的至少10重量%。
    • 8. 发明申请
    • ELECTROPHOTOGRAPHIC PHOTORECEPTOR
    • 电子照相机
    • US20090047589A1
    • 2009-02-19
    • US12246188
    • 2008-10-06
    • Hiroyuki TAJIMAYuuta Kumano
    • Hiroyuki TAJIMAYuuta Kumano
    • G03G5/06G03G15/06
    • G03G5/0672G03G5/056G03G5/0592G03G5/0596G03G5/0614
    • Disclosed is an electrophotographic photoreceptor which is excellent in wear resistance and electrical characteristics. Specifically disclosed is an electrophotographic photoreceptor containing a polyester resin in a photosensitive layer provided on an electroconductive substrate. The polyester resin is composed of a copolymer represented by the general formula 1 below, which has a viscosity average molecular weight (Mv) of 10,000-300,000 and contains a diphenyl ether 4,4′-dicarboxylic acid component and a bivalent phenol component. In the general formula 1, A represents a diphenyl ether 4,4′-dicarboxylic acid residue represented by the formula A below, and B represents a bivalent phenol residue represented by the formula B below. In the formula A, each of Ra1 and Ra2 independently represents a hydrogen atom or a monovalent substituent which may have a substituent, and each of n and m is independently an integer from 0 to 4. In the formula B, each of R1 and R2 independently represents one selected from the group consisting of a hydrogen atom, an alkyl group, an aryl group, a halogen group, and an alkoxy group.
    • 公开了耐磨性和电特性优异的电子照相感光体。 具体公开了一种在设置在导电性基体上的感光层中含有聚酯树脂的电子照相感光体。 聚酯树脂由下述通式1表示的共聚物组成,其粘均分子量(Mv)为10,000-300,000,并含有二苯基醚4,4'-二羧酸组分和二价苯酚组分。 在通式1中,A表示下式A表示的二苯醚4,4'-二羧酸残基,B表示下式B表示的二价酚残基。 在式A中,Ra1和Ra2各自独立地表示氢原子或可以具有取代基的一价取代基,n和m各自独立地为0〜4的整数。在式B中,R 1和R 2各自 独立地表示选自氢原子,烷基,芳基,卤素基和烷氧基的一个基团。
    • 9. 发明申请
    • Electrophotographic Photosensitive Body
    • 电子照相感光体
    • US20080063963A1
    • 2008-03-13
    • US11572001
    • 2005-07-15
    • Hiroyuki TajimaYuuta Kumano
    • Hiroyuki TajimaYuuta Kumano
    • G03G5/04G03G15/02
    • G03G5/0672G03G5/056G03G5/0592G03G5/0596G03G5/0614
    • Disclosed is an electrophotographic photoreceptor which is excellent in wear resistance and electrical characteristics. Specifically disclosed is an electrophotographic photoreceptor containing a polyester resin in a photosensitive layer provided on an electroconductive substrate. The polyester resin is composed of a copolymer represented by the general formula 1 below, which has a viscosity average molecular weight (Mv) of 10,000-300,000 and contains a diphenyl ether 4,4′-dicarboxylic acid component and a bivalent phenol component.[Chemical Formula 1] A-Bn  (1) In the general formula 1, A represents a diphenyl ether 4,4′-dicarboxylic acid residue represented by the formula A below, and B represents a bivalent phenol residue represented by the formula B below. In the formula A, each of Ra1 and Ra2 independently represents a hydrogen atom or a monovalent substituent which may have a substituent, and each of n and m is independently an integer from 0 to 4. In the formula B, each of R1 and R2 independently represents one selected from the group consisting of a hydrogen atom, an alkyl group, an aryl group, a halogen group, and an alkoxy group.
    • 公开了耐磨性和电特性优异的电子照相感光体。 具体公开了一种在设置在导电性基体上的感光层中含有聚酯树脂的电子照相感光体。 聚酯树脂由下述通式1表示的共聚物组成,其粘均分子量(Mv)为10,000-300,000,并含有二苯基醚4,4'-二羧酸组分和二价苯酚组分。 [化学式1] <?in-line-formula description =“In-line Formulas”end =“lead”?> (1)<?in-line-formula description = “在线式”末端=“尾”→在通式1中,A表示下式A表示的二苯醚4,4'-二羧酸残基,B表示由式 B以下。 在式A中,R a 1和R 2各自独立地表示氢原子或可以具有取代基的一价取代基,n和m各自独立地为 在式B中,R 1和R 2各自独立地表示选自氢原子,烷基,烷基, 芳基,卤素基和烷氧基。
    • 10. 发明授权
    • Electrophotographic photoreceptor
    • 电子照相感光体
    • US07244535B2
    • 2007-07-17
    • US11288195
    • 2005-11-29
    • Yuuta Kumano
    • Yuuta Kumano
    • G03G5/05
    • G03G9/08755
    • An electrophotographic photoreceptor including an electroconductive substrate and a photosensitive layer formed thereon, the photosensitive layer containing a polyester resin which is a copolymerized polyester resin having at least two different types of repeating ester structure (A) each comprising a bivalent phenol residue represented by invention formula (1) and an aromatic dicarboxylic acid residue represented by invention formula (3), and a repeating ester structure (B) comprising a bivalent phenol residue represented by invention formula (2) and an aromatic dicarboxylic acid residue represented by invention formula (3):
    • 一种电子照相感光体,包括导电基体和形成在其上的感光层,该感光层含有聚酯树脂,该聚酯树脂是具有至少两种不同类型的重复酯结构(A)的共聚聚酯树脂,每一种包含由本发明式 (1)表示的芳香族二羧酸残基和由式(3)表示的芳香族二羧酸残基和由本发明的式(2)表示的二价酚残基和由式(3)表示的芳香族二羧酸残基的重复酯结构(B) :