公开(公告)号：US09709906B2

公开(公告)日：2017-07-18

申请号：US14817315

申请日：2015-08-04

Applicant: MITSUBISHI CHEMICAL CORPORATION

Inventor： Mitsuo Wada

IPC: G03G5/043 ,  G03G5/047 ,  C07C211/54 ,  G03G5/06

CPC classification number: G03G5/047 ,  C07C211/54 ,  G03G5/0614 ,  G03G5/0672 ,  G03G5/0696

Abstract: The present invention is to provide a charge transport substance having high resistance to stress within electrophotographic processes, an electrophotographic photoreceptor which has excellent high-speed responsiveness, shows a sufficient residual potential, and has high resistance to stress within electrophotographic processes, an electrophotographic cartridge, and an image-forming apparatus. The invention provides a charge transport substance having a specific structure. The invention further provides an electrophotographic photoreceptor including a photosensitive layer which contains the charge transport substance having a specific structure, an electrophotographic cartridge, and an image-forming apparatus, equipped with this electrophotographic photoreceptor.

公开(公告)号：US20170184987A1

公开(公告)日：2017-06-29

申请号：US14982033

申请日：2015-12-29

Applicant: LEXMARK INTERNATIONAL, INC.

Inventor： David Glenn Black ,  Mark Thomas Bellino ,  James Alan Hartman ,  Weimei Luo

IPC: G03G5/147

CPC classification number: G03G5/14769 ,  G03G5/0575 ,  G03G5/0614 ,  G03G5/075 ,  G03G5/14708

Abstract: An improved overcoat layer for an organic photoconductor drum of an electrophotographic image forming device and method to make the same is provided. The overcoat layer is prepared from a curable composition including a crosslinkable hole transport molecule containing four radical polymerizable functional groups in combination with a crosslinkable acrylate having at least 6 functional groups. This overcoat layer improves wear resistance of the photoconductor drum without negatively altering the electrophotographic properties.

公开(公告)号：US20170184986A1

公开(公告)日：2017-06-29

申请号：US14982040

申请日：2015-12-29

Applicant: LEXMARK INTERNATIONAL, INC.

Inventor： DAVID GLENN BLACK ,  MARK THOMAS BELLINO ,  JAMES ALAN HARTMAN ,  WEIMEI LUO

IPC: G03G5/147

CPC classification number: G03G5/14734 ,  G03G5/0525 ,  G03G5/0575 ,  G03G5/0614 ,  G03G5/075 ,  G03G5/14769

Abstract: An improved overcoat layer for an organic photoconductor drum of an electrophotographic image forming device and method to make the same is provided. The overcoat layer is prepared from a curable composition including a crosslinkable hole transport molecule containing four radical polymerizable functional groups in combination with a crosslinkable acrylate having at least 6 functional groups. This overcoat layer improves wear resistance of the photoconductor drum without negatively altering the electrophotographic properties.

公开(公告)号：US09665020B2

公开(公告)日：2017-05-30

申请号：US14664678

申请日：2015-03-20

Applicant: CANON KABUSHIKI KAISHA

Inventor： Daisuke Miura ,  Yota Ito ,  Takashi Anezaki ,  Hirofumi Kumoi

IPC: G03G5/04 ,  G03G5/07 ,  G03G5/06 ,  G03G5/05 ,  G03G5/147

CPC classification number: G03G5/078 ,  G03G5/0564 ,  G03G5/0578 ,  G03G5/0605 ,  G03G5/0614 ,  G03G5/14756 ,  G03G5/14773

Abstract: A charge transporting layer of an electrophotographic photosensitive member contains a polysiloxane resin having a terminal structure represented by the formula (1), at least one selected from the group consisting of a polycarbonate resin A having a structural unit represented by the formula (A) and a polyarylate resin B having a structural unit represented by the formula (B), and a charge transporting substance, wherein the content of the siloxane structure in the polysiloxane resin is not less than 0.5% by mass and not more than 10% by mass based on the total mass of whole resin in the charge transporting layer.

公开(公告)号：US20170146916A1

公开(公告)日：2017-05-25

申请号：US15279874

申请日：2016-09-29

Applicant: FUJI ELECTRIC CO., LTD.

Inventor： Masaru TAKEUCHI ,  Hirotaka KOBAYASHI ,  Toshiki OBINATA ,  Toshiki TAKEUCHI

IPC: G03G15/00

CPC classification number: G03G5/0631 ,  G03G5/047 ,  G03G5/0609 ,  G03G5/0612 ,  G03G5/0614 ,  G03G5/0618 ,  G03G5/0635 ,  G03G5/0648 ,  G03G5/14704 ,  G03G5/14721

Abstract: In a negatively-chargeable laminate-type electrophotographic photoreceptor, a charge generation layer and another charge transport layer are arranged on a conductive substrate directly or via an intermediate layer. The charge transport layer contains at least a hole-transporting substance, an electron-transporting substance and a binder resin; the mass ratio (RPN) [% by mass] between mass (P) of the hole-transporting substance and mass (N) of the electron-transporting substance is represented by the following equation (1), and satisfies the following equation (2): RPN=(N/(P+N))×100  (1) 1≦RPN≦40  (2); and when a voltage of +6 kV is applied to the photoreceptor for 5 seconds via a resin sheet having a thickness of 50 μm and a surface resistivity of 2×107 Ω/cm2, the surface potential difference (ΔVo) and half-tone potential difference (ΔVh) between before and after the voltage application are both 15 V or less.

公开(公告)号：US09581921B2

公开(公告)日：2017-02-28

申请号：US14808114

申请日：2015-07-24

Applicant: KYOCERA Document Solutions Inc.

Inventor： Hideki Okada ,  Fumio Sugai ,  Kensuke Kojima

IPC: G03G5/00 ,  G03G5/06 ,  G03G5/047

CPC classification number: G03G5/0618 ,  G03G5/047 ,  G03G5/0614 ,  G03G5/0672 ,  G03G5/0696

Abstract: An electrophotographic photosensitive member includes a photosensitive layer containing a charge generating material, a charge transport material, and a binder resin. The photosensitive layer is a multi-layer type photosensitive layer or a single-layer type photosensitive layer. The multi-layer type photosensitive layer includes a charge generating layer that contains the charge generating material and a charge transport layer that contains the charge transport material and the binder resin, and in which the charge transport layer is located on the charge generating layer. The single-layer type photosensitive layer contains the charge generating material, the charge transport material, and the binder resin. The charge transport material is an enamine derivative represented by general formula (1). In general formula (1), R1, R2, l, m, and n are each as defined in the specification.

Abstract translation: 电子照相感光构件包括含有电荷产生材料的感光层，电荷输送材料和粘合剂树脂。 感光层是多层型感光层或单层型感光层。 多层型感光层包括含有电荷产生材料的电荷产生层和包含电荷输送材料和粘合剂树脂的电荷输送层，其中电荷输送层位于电荷产生层上。 单层型感光层包含电荷产生材料，电荷输送材料和粘合剂树脂。 电荷输送材料是由通式（1）表示的烯胺衍生物。 在通式（1）中，R 1，R 2，l，m和n各自如说明书中所定义。

公开(公告)号：US20170003608A1

公开(公告)日：2017-01-05

申请号：US15195319

申请日：2016-06-28

Applicant: KYOCERA Document Solutions Inc.

Inventor： Jun AZUMA ,  Takahiro OKI ,  Keiji MARUO

IPC: G03G15/00

CPC classification number: G03G5/0614 ,  G03G5/056 ,  G03G5/0564 ,  G03G5/0672 ,  G03G5/0675 ,  G03G5/0696 ,  G03G15/75

Abstract: An electrophotographic photosensitive member includes a conductive substrate and a photosensitive layer. The photosensitive layer contains at least a charge generating material, a hole transport material, and a binder resin. The hole transport material is a compound represented by the following general formula (1). The binder resin is a resin represented by the following general formula (2). In general formula (1), R1 and R3 each independently represent an alkyl group, an aryl group, an aralkyl group, or an alkoxy group; and R2 and R4 each independently represent an alkyl group, or an alkoxy group. In general formula (2), R23, R24, and R25 each independently represent a hydrogen atom, or a C1-4 alkyl group, at least one of R23, R24, and R25 representing a C1-4 alkyl group; p+q=1.00, and 0.35≦p

Abstract translation: 电子照相感光构件（1）包括导电基底（2）和感光层（3）。 感光层至少含有电荷产生材料，空穴传输材料和粘合剂树脂。 空穴传输材料是由以下通式（1）表示的化合物。 粘合剂树脂是由以下通式（2）表示的树脂。 在通式（1）中，R 1和R 3各自独立地表示烷基，芳基，芳烷基或烷氧基; R 2和R 4各自独立地表示烷基或烷氧基。 在通式（2）中，R 23，R 24和R 25各自独立地表示氢原子或C 1-4烷基，R 23，R 24和R 25中的至少一个表示C 1- 4烷基; p + q = 1.00，0.35‰p <1.00; n表示2或3。

公开(公告)号：US20160349635A1

公开(公告)日：2016-12-01

申请号：US15160601

申请日：2016-05-20

Applicant: KYOCERA Document Solutions Inc.

Inventor： Hiroki TSURUMI ,  Eiichi MIYAMOTO

IPC: G03G15/00

CPC classification number: G03G5/0614 ,  G03G5/0603 ,  G03G5/0605 ,  G03G5/0607 ,  G03G5/0609 ,  G03G5/0618 ,  G03G5/0672 ,  G03G15/02 ,  G03G21/18

Abstract: A positively chargeable single-layer electrophotographic photosensitive member is used as an image bearing member in an image forming apparatus including a charging section configured to be in contact with the image bearing member to apply a voltage thereto. The positively chargeable single-layer electrophotographic photosensitive member includes a conductive substrate and a photosensitive layer. The photosensitive layer contains at least a charge generating material, a hole transport material, an electron transport material, and a binder resin. The hole transport material contains a triarylamine derivative represented by the following general formula (I). In general formula (I), R1, R2, m and n have the same meaning as R1, R2, m, and n defined in the description.

公开(公告)号：US09494880B2

公开(公告)日：2016-11-15

申请号：US14647788

申请日：2013-11-18

Applicant: CANON KABUSHIKI KAISHA

Inventor： Kazunori Noguchi ,  Daisuke Tanaka ,  Kazumichi Sugiyama ,  Yota Ito ,  Michiyo Sekiya ,  Kunihiko Sekido ,  Atsushi Okuda ,  Nobuhiro Nakamura ,  Yuka Ishiduka

IPC: G03G5/14 ,  G03G5/05 ,  G03G5/06 ,  G03G5/147

CPC classification number: G03G5/0564 ,  G03G5/0542 ,  G03G5/0614 ,  G03G5/0696 ,  G03G5/142 ,  G03G5/144 ,  G03G5/14708 ,  G03G5/14726

Abstract: The present invention relates to an electrophotographic photosensitive member including an undercoat layer containing metal oxide particles, a binder resin, and an organic acid metal salt having at least one metal element selected from the group consisting of bismuth, zinc, cobalt, iron, nickel, and copper.

Abstract translation: 本发明涉及一种电子照相感光构件，其包含含有金属氧化物颗粒的底涂层，粘合剂树脂和具有选自铋，锌，钴，铁，镍等的至少一种金属元素的有机酸金属盐， 和铜。

公开(公告)号：US20160304437A1

公开(公告)日：2016-10-20

申请号：US15193462

申请日：2016-06-27

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Akihiro KONDO ,  Satoshi KATAYAMA ,  Young-min NAM ,  Won-joon SON ,  Chan-hee LEE ,  Sang-heum HWANG

IPC: C07C211/58 ,  G03G5/05 ,  C07C217/92 ,  G03G5/06

CPC classification number: C07C211/58 ,  C07C217/84 ,  G03G5/0564 ,  G03G5/0614 ,  G03G5/0696

Abstract: Provided are an asymmetric butadiene-based charge transporting compound represented by one of Formula (1) and (1′) as in claim 1, an electrophotographic photoreceptor including the asymmetric butadiene-based charge transporting compound, and an electrophotographic imaging apparatus. The electrophotographic photoreceptor including the organic photoconductive material as a charge transporting material may not cause a problem, such as partial crystallization during film formation and may have a high charge potential, a sufficient photoresponsive property with high sensitivity, and a high durability. Moreover, these properties may be all maintained even in the case of exposure to light as well as use in low-temperature environments or high-speed processes, thus having high reliability.

Abstract translation: 提供了如权利要求1所述的由式（1）和（1'）之一表示的不对称丁二烯类电荷输送化合物，包含不对称丁二烯类电荷输送化合物的电子照相感光体和电子照相成像装置。 包含作为电荷输送材料的有机光电导材料的电子照相感光体可能不会引起诸如成膜期间部分结晶并且可能具有高电荷电位，具有高灵敏度的足够的光响应性和高耐久性的问题。 此外，即使在曝光的情况下以及在低温环境或高速工艺中使用这些性质也可以全部保持这些特性，从而具有高的可靠性。