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公开(公告)号：US10365569B2
公开(公告)日：2019-07-30
申请号：US16053905
申请日：2018-08-03
Applicant: CANON KABUSHIKI KAISHA
Inventor： Ryoichi Tokimitsu , Masaki Nonaka , Haruki Mori , Takahiro Mitsui
Abstract: The present invention provides: an electrophotographic photosensitive member which can achieve both of abrasion resistance and electrical characteristics; a production method of the electrophotographic photosensitive member; and a process cartridge and an electrophotographic apparatus having the electrophotographic photosensitive member. A surface layer of the electrophotographic photosensitive member includes a cured product and a specific amount of an alcohol or carboxylic acid having a specific structure, wherein the cured product is a polymerized product of a hole transporting compound having an acryloyloxy group or a methacryloyloxy group.
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公开(公告)号：US09946175B2
公开(公告)日：2018-04-17
申请号：US15128914
申请日：2015-03-23
Applicant: CANON KABUSHIKI KAISHA
Inventor： Koichi Nakata , Shinji Takagi , Yuzo Tokunaga , Masaki Nonaka , Ryoichi Tokimitsu
CPC classification number: G03G5/07 , G03G5/0564 , G03G5/0603 , G03G5/0605 , G03G5/0609 , G03G5/0614 , G03G5/0618 , G03G5/0696 , G03G5/14743 , G03G21/18
Abstract: To provide an electrophotographic photosensitive member which satisfies abrasion resistance and electrical properties and which is difficult to cause image deletion. A surface layer of the electrophotographic photosensitive member of this invention contains a polymerized product of a hole transporting compound having a polymerizable functional group, in which the hole transporting compound is at least one compound selected from the group consisting of: a compound consisting of one or more carbon atoms, one or more hydrogen atoms, and one or more halogen atoms; and a compound consisting of one or more carbon atoms, one or more hydrogen atoms, one or more oxygen atoms, and one or more halogen atoms.
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公开(公告)号：US09829810B2
公开(公告)日：2017-11-28
申请号：US15342868
申请日：2016-11-03
Applicant: CANON KABUSHIKI KAISHA
Inventor： Masaki Nonaka , Ryoichi Tokimitsu , Shinji Takagi , Koichi Nakata , Haruki Mori
CPC classification number: G03G5/0592 , G03G5/0525 , G03G5/0614 , G03G5/14769 , G03G5/14791
Abstract: In an electrophotographic photosensitive member including a support and a photosensitive layer formed on the support, a surface layer of the electrophotographic photosensitive member contains a cured product obtained by copolymerizing at least one compound (i) selected from the group consisting of a triphenylamine compound having a hydroxymethyl group and a benzidine compound having a hydroxymethyl group, and at least one compound (ii) selected from the group consisting of a compound represented by the following formula (1), a compound represented by the following formula (2), a compound represented by the following formula (3), and a compound represented by the following formula (4):
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4.发明授权Method for testing charge generation layer and process for manufacturing electrophotographic photoreceptors on large scale 有权用于大规模测试电荷产生层的方法和制造电子照相感光体的方法公开(公告)号：US09217716B2
公开(公告)日：2015-12-22
申请号：US14229525
申请日：2014-03-28
Applicant: CANON KABUSHIKI KAISHA
Inventor： Wataru Kitamura , Ryoichi Tokimitsu , Masaki Nonaka , Mai Murakami
CPC classification number: G01N21/95 , G01N21/8422 , G03G5/0525 , G03G5/0696 , G03G5/102 , G03G5/144
Abstract: A method is provided for testing a charge generation layer disposed directly on an undercoat layer disposed directly on an aluminum-based cylindrical support member formed by extrusion and drawing having a periphery not subjected to cutting work. The method includes testing the charge generation layer for a defect or a suspected defect by irradiating the charge generation layer with light, and receiving reflected light from the charge generation layer with a light receiving device. The light emitted to the charge generation layer has a wavelength within the range of the absorption wavelengths of the charge generation layer, and whose transmittance to the undercoat layer is 0.3% or less.
Abstract translation: 提供了一种用于测试直接设置在底涂层上的电荷产生层的方法，所述底涂层直接设置在具有不进行切割加工的周边的挤压拉伸形成的铝基圆柱形支撑构件上。 该方法包括通过用光照射电荷产生层并用光接收装置接收来自电荷产生层的反射光来测试缺陷或疑似缺陷的电荷产生层。 发射到电荷产生层的光具有在电荷产生层的吸收波长范围内的波长，并且其对底涂层的透射率为0.3％以下。
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公开(公告)号：US20230259045A1
公开(公告)日：2023-08-17
申请号：US18156611
申请日：2023-01-19
Applicant: CANON KABUSHIKI KAISHA
Inventor： Ryoichi Tokimitsu , Haruhiko Mitsuda , Jun Ohira , Toshiyasu Shirasuna , Ikuyo Kuroiwa , Tsuyoshi Shimada , Takanori Ueno , Kenichi Ikari , Eileen Takeuchi
CPC classification number: G03G5/071 , G03G5/14791 , G03G5/14726 , G03G5/0564
Abstract: Provided is an electrophotographic photosensitive member including a surface layer, which is excellent in dispersibility of fluorine atom-containing resin particles and is suppressed from causing a ghost image. Specifically, provided is an electrophotographic photosensitive member including a surface layer, wherein the surface layer contains a fluorine atom-containing resin particle, a binder material, and a polymer A having specific structural units.
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Patent Agency Ranking
6.发明申请公开(公告)号：US20200341391A1
公开(公告)日：2020-10-29
申请号：US16855035
申请日：2020-04-22
Applicant: CANON KABUSHIKI KAISHA
Inventor： Ryoichi Tokimitsu , Koichi Nakata , Haruki Mori , Shubun Kujirai
Abstract: Provided is an electrophotographic photosensitive member including a support and a surface layer, wherein the surface layer contains a copolymer of a composition containing a specific hole transporting compound and a specific compound.
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7.发明授权公开(公告)号：US09557664B2
公开(公告)日：2017-01-31
申请号：US14784533
申请日：2014-03-27
Applicant: CANON KABUSHIKI KAISHA
Inventor： Yuka Ishiduka , Ryoichi Tokimitsu , Wataru Kitamura , Mai Murakami , Kan Tanabe
Abstract: The present invention provides an electrophotographic photosensitive member which includes an undercoat layer, and the undercoat layer contains metal oxide particles and a compound represented by the formula (1).
Abstract translation: 本发明提供一种电子照相感光构件，其包括底涂层，底涂层含有金属氧化物颗粒和由式（1）表示的化合物。
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公开(公告)号：US09291922B2
公开(公告)日：2016-03-22
申请号：US14229505
申请日：2014-03-28
Applicant: CANON KABUSHIKI KAISHA
Inventor： Mai Murakami , Yuka Ishiduka , Wataru Kitamura , Masaki Nonaka , Ryoichi Tokimitsu
CPC classification number: G03G5/0525 , G03G5/0517 , G03G5/142 , G03G5/144
Abstract: A composition that contains a compound represented by the formula (1) is dissolved in an organic compound, and the composition is purified by using a basic adsorbent that contains at least 15% by mass magnesium and has a volume average particle diameter of 10 μm to 500 μm, both inclusive. An undercoat-layer-forming coating liquid is prepared by removing the basic adsorbent and dispersing metal oxide particles in the obtained solution containing the purified form of the composition. An undercoat layer is formed by forming a coat of the undercoat-layer-forming coating liquid and drying the coat.
Abstract translation: 将含有式（1）表示的化合物的组合物溶解在有机化合物中，通过使用含有至少15质量％的镁并且体积平均粒径为10μm的碱性吸附剂将组合物纯化至 500μm，包括两端。 通过除去碱性吸附剂并将金属氧化物颗粒分散在得到的含有纯化形式的组合物的溶液中来制备底涂层形成用涂布液。 通过形成底涂层形成用涂布液的涂层并干燥该涂层而形成底涂层。
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9.发明申请公开(公告)号：US20150004534A1
公开(公告)日：2015-01-01
申请号：US14361624
申请日：2012-11-28
Applicant: CANON KABUSHIKI KAISHA
Inventor： Kenichi Kaku , Wataru Kitamura , Yuka Ishiduka , Mai Murakami , Ryoichi Tokimitsu , Hideaki Nagasaka , Takeshi Murakami
IPC: G03G15/00
CPC classification number: G03G5/144 , B05D3/0254 , G03G5/142
Abstract: Provided are an electrophotographic photosensitive member in which a variation in the light-area potential is suppressed even when the electrophotographic photosensitive member is repeatedly used for a long time in a high-temperature, high-humidity environment, a method of producing the electrophotographic photosensitive member, and a process cartridge and an electrophotographic apparatus that include the electrophotographic photosensitive member.The electrophotographic photosensitive member includes a support, an undercoat layer, and a photosensitive layer, wherein the undercoat layer contains a urethane resin and zinc oxide particles whose surfaces have been treated with a particular amount of an aminosilane compound.
Abstract translation: 提供一种电子照相感光构件，即使在电晕感光构件在高温，高湿度环境中长时间重复使用时，光区电位的变化也被抑制，电子照相感光构件的制造方法 以及包括电子照相感光构件的处理盒和电子照相设备。 电子照相感光构件包括支撑体，底涂层和感光层，其中底涂层含有表面已经用特定量的氨基硅烷化合物处理的聚氨酯树脂和氧化锌颗粒。
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10.发明授权公开(公告)号：US11204560B2
公开(公告)日：2021-12-21
申请号：US16855035
申请日：2020-04-22
Applicant: CANON KABUSHIKI KAISHA
Inventor： Ryoichi Tokimitsu , Koichi Nakata , Haruki Mori , Shubun Kujirai
Abstract: Provided is an electrophotographic photosensitive member including a support and a surface layer, wherein the surface layer contains a copolymer of a composition containing a specific hole transporting compound and a specific compound.
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