公开(公告)号：US20220100111A1

公开(公告)日：2022-03-31

申请号：US17481652

申请日：2021-09-22

申请人： KYOCERA Document Solutions Inc.

发明人： Yuko IWASHITA ,  Kazunari HAMASAKI ,  Jun AZUMA

IPC分类号： G03G5/047 ,  G03G5/06 ,  G03G21/00

摘要： An electrophotographic photosensitive member includes a conductive substrate and a photosensitive layer. The photosensitive layer is a single layer and contains a charge generating material, an electron transport material, a binder resin, and a hole transport material. The electron transport material includes a compound represented by general formula (1): In general formula (1), R1 and R2 each represent, independently of one another, a hydrogen atom, an alkyl group, a heterocyclic group, an alkoxy group, an aralkyl group, an allyl group, or an aryl group optionally substituted with at least 1 and no more than 5 substituents selected from the group consisting of a halogen atom, an alkyl group, and alkoxy group.

公开(公告)号：US20220100110A1

公开(公告)日：2022-03-31

申请号：US17481401

申请日：2021-09-22

申请人： KYOCERA Document Solutions Inc.

发明人： Yuko IWASHITA ,  Kazunari HAMASAKI

IPC分类号： G03G5/047 ,  G03G5/05 ,  G03G5/06

摘要： An electrophotographic photosensitive member includes a conductive substrate and a photosensitive layer. The photosensitive layer is a single layer, and contains a charge generating material, an electron transport material, a binder resin, and a hole transport material. The electron transport material includes a compound represented by general formula (1). The binder resin includes a polycarbonate resin having an end group and a main chain represented by general formula (10).

公开(公告)号：US20140212803A1

公开(公告)日：2014-07-31

申请号：US14169031

申请日：2014-01-30

申请人： KYOCERA DOCUMENT SOLUTIONS INC.

发明人： Yuko IWASHITA ,  Yukimasa WATANABE ,  Junichiro OTSUBO ,  Kazuaki EZURE ,  Kazutaka SUGIMOTO

IPC分类号： G03G15/00

CPC分类号： G03C1/73 ,  G03C1/52 ,  G03G5/047 ,  G03G5/0542

摘要： A positively chargeable electrophotographic photosensitive member has a photosensitive layer. The photosensitive layer at least includes the following layers layered in the stated order: (I) a charge transport layer at least containing a hole transport material and a binder resin; and (II) a charge generating-and-transporting layer at least containing a charge generating material, an electron transport material, a hole transport material, and a binder resin all within this layer. The binder resin contained in the charge transport layer is different from the binder resin contained in the charge generating-and-transporting layer, and either of the binder resins contains a polyvinyl acetal resin.

摘要翻译： 带正电的电子照相感光构件具有感光层。 感光层至少包括以下顺序层叠的以下层：（I）至少含有空穴传输材料和粘合剂树脂的电荷传输层; 和（II）至少含有电荷产生材料，电子传输材料，空穴传输材料和粘合剂树脂的电荷产生和传输层。 包含在电荷输送层中的粘合剂树脂与电荷产生 - 输送层中所含的粘合剂树脂不同，并且任一种粘合剂树脂含有聚乙烯醇缩醛树脂。

公开(公告)号：US20190235400A1

公开(公告)日：2019-08-01

申请号：US16260255

申请日：2019-01-29

申请人： KYOCERA Document Solutions Inc.

发明人： Yuko IWASHITA ,  Kazunari HAMASAKI ,  Kazutaka SUGIMOTO

IPC分类号： G03G5/047 ,  G03G5/05 ,  G03G5/06 ,  G03G5/087

摘要： An electrophotographic photosensitive member includes a conductive substrate and a photosensitive layer of a single layer. The photosensitive layer contains a charge generating material, a hole transport material, an electron transport material, and a binder resin. An optical response time is at least 0.05 milliseconds and no greater than 0.85 milliseconds. The binder resin includes a polycarbonate resin including a repeating unit represented by general formula (1) shown below and a repeating unit represented by general formula (2) shown below.

公开(公告)号：US20190235399A1

公开(公告)日：2019-08-01

申请号：US16258790

申请日：2019-01-28

申请人： KYOCERA Document Solutions Inc.

发明人： Yuko IWASHITA ,  Kazunari HAMASAKI ,  Kazutaka SUGIMOTO

IPC分类号： G03G5/047 ,  G03G5/06 ,  G03G5/05

CPC分类号： G03G5/047 ,  G03G5/0564 ,  G03G5/0592 ,  G03G5/0596 ,  G03G5/0635 ,  G03G5/0675 ,  G03G5/0696

摘要： An electrophotographic photosensitive member includes a conductive substrate and a single-layer photosensitive layer. The photosensitive layer contains a charge generating material, a hole transport material, an electron transport material, an additive, and a binder resin. An optical response time is in a range from 0.05 milliseconds to 0.85 milliseconds. The optical response time is a time from irradiation of a surface of the photosensitive layer charged to +800 V with pulse light having a wavelength of 780 nm to surface potential decay of the photosensitive layer from +800 V to +400 V. An optical intensity of the pulse light is set so that the surface potential of the photosensitive layer becomes +200 V from +800 V after 400 milliseconds from pulse light irradiation of the surface of the photosensitive layer charged to the +800 V. The additive includes either of both an ultraviolet absorbing agent and an antioxidant.

公开(公告)号：US20160223924A1

公开(公告)日：2016-08-04

申请号：US15010386

申请日：2016-01-29

申请人： KYOCERA Document Solutions Inc.

发明人： Yuko IWASHITA ,  Kazutaka SUGIMOTO ,  Takafumi MATSUMOTO

IPC分类号： G03G15/00

CPC分类号： G03G5/0614 ,  G03G5/0696

摘要： An electrophotographic photosensitive member includes a photosensitive layer. The photosensitive layer contains a charge generating material and a hole transport material. Titanyl phthalocyanine contained as the charge generating material exhibits a main peak at a Bragg angle 2θ±0.2°=27.2° in a CuKα characteristic X-ray diffraction spectrum and satisfies either (B) or (C), shown below, in a differential scanning calorimetry spectrum. (B) A peak is not present in a range from 50° C. to 400° C., other than a peak resulting from vaporization of adsorbed water. (C) A peak is not present in a range from 50° C. to 270° C., other than a peak resulting from vaporization of adsorbed water, and a peak is present in a range from 270° C. to 400° C. The hole transport material is a compound represented by general formula (1).

摘要翻译： 电子照相感光构件包括感光层。 感光层含有电荷产生材料和空穴传输材料。 在CuKα特征X射线衍射光谱中，作为电荷产生材料含有的酞菁酞菁在布拉格角为2θ±0.2°= 27.2°时呈现主峰，并且在差示扫描中满足下述（B）或（C） 量热谱 （B）除了由吸附水蒸发得到的峰值以外，峰值不存在于50℃〜400℃的范围内。 （C）除了吸附水的蒸发产生的峰以外，峰不在50℃〜270℃的范围内，峰值存在于270〜400℃的范围内 空穴传输材料是由通式（1）表示的化合物。

公开(公告)号：US20240353772A1

公开(公告)日：2024-10-24

申请号：US18638333

申请日：2024-04-17

申请人： KYOCERA Document Solutions Inc.

发明人： Yuko IWASHITA ,  Jun AZUMA ,  Keiji MARUO ,  Kazuaki EZURE ,  Kazutaka SUGIMOTO ,  Yasuhiro OISHI ,  Kazunari HAMASAKI

IPC分类号： G03G5/14 ,  G03G5/10

CPC分类号： G03G5/144 ,  G03G5/102

摘要： An electrophotographic photosensitive member includes a conductive substrate, an intermediate layer provided on the conductive substrate, and a photosensitive layer provided on the intermediate layer. The intermediate layer contains a specific polyamide resin and specific inorganic particles. The specific inorganic particles each include a metal oxide particle and a surface treatment layer covering at least a part of the surface of the metal oxide particle. The surface treatment layers contain at least one of aluminum oxide and silica. The specific polyamide resin includes a first repeating unit derived from an aliphatic dicarboxylic acid with a carbon number of at least 8 and no greater than 20 and a second repeating unit derived from a diamine compound with a cycloalkane structure. The total percentage content of the first repeating unit and the second repeating unit to all repeating units included in the specific polyamide resin is at least 80% by mol.

公开(公告)号：US20240353771A1

公开(公告)日：2024-10-24

申请号：US18638286

申请日：2024-04-17

申请人： KYOCERA Document Solutions Inc.

发明人： Yuko IWASHITA ,  Jun AZUMA ,  Keiji MARUO ,  Kazuaki EZURE ,  Kazutaka SUGIMOTO ,  Yasuhiro OISHI ,  Kazunari HAMASAKI

IPC分类号： G03G5/14 ,  G03G7/00 ,  G03G15/00

CPC分类号： G03G5/142 ,  G03G7/0053 ,  G03G15/75

摘要： An electrophotographic photosensitive member includes a conductive substrate, an intermediate layer provided on the conductive substrate, and a photosensitive layer provided on the intermediate layer. The intermediate layer contains a specific polyamide resin and specific inorganic particles. The specific inorganic particles each include a metal oxide particle and a surface treatment layer covering at least a part of the surface of the metal oxide particle. The surface treatment layers contain a component derived from an organic siloxane compound. The specific polyamide resin includes a first repeating unit derived from an aliphatic dicarboxylic acid with a carbon number of at least 8 and no greater than 20 and a second repeating unit derived from a diamine compound with a cycloalkane structure. The total percentage content of the first repeating unit and the second repeating unit to all repeating units included in the specific polyamide resin is at least 80% by mol.

公开(公告)号：US20200057396A1

公开(公告)日：2020-02-20

申请号：US16496220

申请日：2018-03-16

申请人： KYOCERA Document Solutions Inc.

发明人： Yuko IWASHITA ,  Kazunari HAMASAKI ,  Kazutaka SUGIMOTO

IPC分类号： G03G5/047 ,  G03G5/06 ,  G03G5/05 ,  G03G21/18 ,  G03G15/00

摘要： An electrophotographic photosensitive member includes a photosensitive layer of a single layer. The photosensitive layer contains a charge generating material, a hole transport material, an electron transport material, and a binder resin. An optical response time is 0.05 milliseconds or longer and 0.85 milliseconds or shorter. The optical response time is a time from irradiation of a surface of the photosensitive layer charged to +800 V with pulse light having a wavelength of 780 nm to decay of a surface potential of the photosensitive layer from +800 V to +400 V. The pulse light has an intensity that allows the surface potential of the photosensitive layer to decay to +200 V from +800 V after 400 milliseconds elapse from the irradiation of the surface of the photosensitive layer charged to +800 V with the pulse light. The photosensitive layer has a Martens hardness at 50° C. of at least 160 N/mm2.

公开(公告)号：US20240353792A1

公开(公告)日：2024-10-24

申请号：US18636961

申请日：2024-04-16

申请人： KYOCERA Document Solutions Inc.

发明人： Yuko IWASHITA ,  Jun AZUMA ,  Keiji MARUO ,  Kazuaki EZURE ,  Yuichi YOSHIDA ,  Kazutaka SUGIMOTO ,  Yasuhiro OISHI ,  Kazunari HAMASAKI

IPC分类号： G03G21/18 ,  G03G5/14 ,  G03G7/00 ,  G03G15/095

CPC分类号： G03G21/1814 ,  G03G5/142 ,  G03G7/0053 ,  G03G15/095 ,  G03G2215/00957

摘要： An electrophotographic photosensitive member includes a conductive substrate, an intermediate layer provided on the conductive substrate, and a photosensitive layer provided on the intermediate layer. The intermediate layer contains a specific polyamide resin and specific inorganic particles. The specific inorganic particles each include a metal oxide particle and a surface treatment layer covering at least a part of the surface of the metal oxide particle. The surface treatment layers contain a component derived from an organic siloxane compound and at least one of aluminum oxide and silica. The specific polyamide resin includes a first repeating unit derived from an aliphatic dicarboxylic acid with a carbon number of at least 8 and no greater than 20 and a second repeating unit derived from a diamine compound with a cycloalkane structure.