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1.发明申请公开(公告)号：US20230075407A1
公开(公告)日：2023-03-09
申请号：US17816028
申请日：2022-07-29
摘要： Provided is an electrophotographic photosensitive member having a feature in that, in a graph that is obtained by a method of measuring an EV curve, and that has a horizontal axis representing I and a vertical axis representing V, when V at I=0.500 [μJ/cm2] is represented by Vr [V], a maximum value of S [V·μJ/cm2] represented by S=I·(V−Vr) in a range of I=0.000 to 0.030 [μJ/cm2] is represented by Smax [V·μJ/cm2], and a product of a light amount Ii [μJ/cm2] on the horizontal axis and a potential Vi[V] on the vertical axis at a point of intersection between an approximate straight line in a range of I=0.000 to 0.010 [μJ/cm2] and an approximate straight line in a range of I=0.490 to 0.500 [μJ/cm2] is represented by Si=Ii·(Vi−Vr) [V·μJ/cm2], a ratio of Si to Smax, which is represented by AR=Si/Smax, satisfies AR≤0.10.
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公开(公告)号：US20210240093A1
公开(公告)日：2021-08-05
申请号：US17149568
申请日：2021-01-14
发明人： Hideharu Shimozawa , Kenichi Kaku , Tsutomu Nishida , Kazunori Noguchi , Akihiro Maruyama , Kaname Watariguchi , Takashi Anezaki , Haruyuki Tsuji
摘要： An electrophotographic photosensitive member having a support and a photosensitive layer on the support, wherein the electrophotographic photosensitive member comprises a surface layer comprising a polymerization product of a composition containing polyrotaxane and a charge transporting substance, and the polymerization product including a bond between the polyrotaxane and the charge transporting substance.
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3.发明授权公开(公告)号：US09372419B2
公开(公告)日：2016-06-21
申请号：US14418868
申请日：2013-08-29
发明人： Haruyuki Tsuji , Atsushi Fujii , Kazuhisa Shida , Nobuhiro Nakamura , Hideaki Matsuoka , Hiroyuki Tomono
摘要： Provided are an electrophotographic photosensitive member in which a residual potential hardly increases at the time of image formation, a pattern memory hardly occurs, and the crack of a conductive layer hardly occurs, and a process cartridge and an electrophotographic apparatus each including the electrophotographic photosensitive member. To this end, the conductive layer of the electrophotographic photosensitive member contains a titanium oxide particle coated with tin oxide doped with phosphorus, a tin oxide particle doped with phosphorus, and a binding material, and when a total volume of the conductive layer is represented by VT, a total volume of the titanium oxide particle coated with tin oxide doped with phosphorus in the conductive layer is represented by V1P, and a total volume of the tin oxide particle doped with phosphorus in the conductive layer is represented by V2P, the VT, the V1P, and the V2P satisfy the following expressions: 2≦{(V2P/VT)/(V1P/VT)}×100≦25 and 15≦{(V1P/VT)+(V2P/VT)}×100≦45.
摘要翻译： 提供了一种电子照相感光构件，其中在图像形成时残留电位几乎不增加，几乎不发生图案记忆，并且几乎不发生导电层的裂纹;以及处理盒和电子照相设备，每个包括电子照相感光构件 。 为此，电子照相感光构件的导电层包含涂覆有掺杂有磷的氧化锡，掺杂磷的氧化锡颗粒和粘合材料的氧化钛颗粒，并且当导电层的总体积由 VT中，导电层中涂覆有掺杂磷的氧化锡的氧化钛颗粒的总体积由V1P表示，导电层中掺杂有磷的氧化锡颗粒的总体积由V2P表示，VT， V1P和V2P满足以下表达式：2＆nlE; {（V2P / VT）/（V1P / VT）}×100＆nlE; 25和15＆nlE; {（V1P / VT）+（V2P / VT）}×100＆ 。
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4.发明申请公开(公告)号：US20230059696A1
公开(公告)日：2023-02-23
申请号：US17814048
申请日：2022-07-21
摘要： Provided is an electrophotographic photosensitive member that includes a support, a charge generation layer on the support, and a charge transfer layer on the charge generation layer and that satisfies specifications on an EV curve based on a measurement method of NESA-EV curve. The electrophotographic photosensitive member can exhibit high character quality and a digital gradation characteristic in a low-line-number halftone while maintaining an analog gradation characteristic in a high-speed process.
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公开(公告)号：US11500301B2
公开(公告)日：2022-11-15
申请号：US17154529
申请日：2021-01-21
发明人： Hideharu Shimozawa , Kenichi Kaku , Tsutomu Nishida , Kazunori Noguchi , Akihiro Maruyama , Kaname Watariguchi , Takashi Anezaki , Haruyuki Tsuji
IPC分类号： G03G5/147 , C08F283/00 , C08B37/16
摘要： An electrophotographic photosensitive member, which is suppressed in occurrence of fogging and is excellent in abrasion resistance. In the electrophotographic photosensitive member, an outermost surface layer of the electrophotographic photosensitive member comprises a polymerized product of a composition comprising at least a polyrotaxane and a monomer having a polymerizable reactive group, and a chain molecule of the polyrotaxane has two blocking groups at both terminals thereof, and a (meth)acryloyloxy group of a cyclic molecule of the polyrotaxane forms a bond.
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公开(公告)号：US11493853B2
公开(公告)日：2022-11-08
申请号：US17149568
申请日：2021-01-14
发明人： Hideharu Shimozawa , Kenichi Kaku , Tsutomu Nishida , Kazunori Noguchi , Akihiro Maruyama , Kaname Watariguchi , Takashi Anezaki , Haruyuki Tsuji
摘要： An electrophotographic photosensitive member having a support and a photosensitive layer on the support, wherein the electrophotographic photosensitive member comprises a surface layer comprising a polymerization product of a composition containing polyrotaxane and a charge transporting substance, and the polymerization product including a bond between the polyrotaxane and the charge transporting substance.
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公开(公告)号：US20210240094A1
公开(公告)日：2021-08-05
申请号：US17154529
申请日：2021-01-21
发明人： Hideharu Shimozawa , Kenichi Kaku , Tsutomu Nishida , Kazunori Noguchi , Akihiro Maruyama , Kaname Watariguchi , Takashi Anezaki , Haruyuki Tsuji
IPC分类号： G03G5/147 , C08B37/16 , C08F283/00
摘要： An electrophotographic photosensitive member, which is suppressed in occurrence of fogging and is excellent in abrasion resistance. In the electrophotographic photosensitive member, an outermost surface layer of the electrophotographic photosensitive member comprises a polymerized product of a composition comprising at least a polyrotaxane and a monomer having a polymerizable reactive group, and a chain molecule of the polyrotaxane has two blocking groups at both terminals thereof, and a (meth)acryloyloxy group of a cyclic molecule of the polyrotaxane forms a bond.
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公开(公告)号：US20150086921A1
公开(公告)日：2015-03-26
申请号：US14396350
申请日：2013-06-17
IPC分类号： G03G5/08
CPC分类号： G03G5/08 , G03G5/0525 , G03G5/104 , G03G5/144
摘要： A method for producing an electrophotographic photosensitive member in which leakage hardly occurs is provided. For this, in the method for producing an electrophotographic photosensitive member according to the present invention, a coating liquid for a conductive layer is prepared using a solvent, a binder material, and a metallic oxide particle having a water content of not less than 1.0% by mass and not more than 2.0% by mass; using the coating liquid for a conductive layer, a conductive layer having a volume resistivity of not less than 1.0×108 Ω·cm and not more than 5.0×1012 Ω·cm is formed; the mass ratio (P/B) of the metallic oxide particle (P) to the binder material (B) in the coating liquid for a conductive layer is not less than 1.5/1.0 and not more than 3.5/1.0; and the metallic oxide particle is selected from the group consisting of a titanium oxide particle coated with tin oxide doped with phosphorus, a titanium oxide particle coated with tin oxide doped with tungsten, and a titanium oxide particle coated with tin oxide doped with fluorine.
摘要翻译： 提供了几乎不发生泄漏的电子照相感光构件的制造方法。 为此，在本发明的电子照相感光体的制造方法中，使用溶剂，粘合剂材料和含水率为1.0％以上的金属氧化物粒子制备导电层用涂布液， 以质量％计不超过2.0质量％ 使用涂布液作为导电层，形成体积电阻率不小于1.0×10 8Ω·cm·cm且不大于5.0×10 12Ω·cm·cm的导电层; 导电层用涂布液中的金属氧化物粒子（P）与粘合剂材料（B）的质量比（P / B）为1.5 / 1.0以上且3.5 / 1.0以下; 金属氧化物粒子选自由掺杂有磷的氧化锡涂覆的氧化钛粒子，涂覆有掺杂钨的氧化锡的二氧化钛粒子，以及掺杂有氟的氧化锡涂覆的氧化钛粒子。
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9.发明授权公开(公告)号：US08980510B2
公开(公告)日：2015-03-17
申请号：US13972688
申请日：2013-08-21
发明人： Atsushi Fujii , Hiroyuki Tomono , Haruyuki Tsuji
摘要： An electrophotographic photosensitive member in which a leakage hardly occurs, a process cartridge and electrophotographic apparatus having the electrophotographic photosensitive member, and a method for producing the electrophotographic photosensitive member are provided. The conductive layer in the electrophotographic photosensitive member contains metal oxide particle coated with tin oxide doped with niobium or tantalum. The relations: Ia≦6,000 and 10≦Ib are satisfied. The conductive layer before the test is performed has a volume resistivity of not less than 1.0×108 Ω·cm and not more than 5.0×1012 Ω·cm.
摘要翻译： 提供几乎不发生泄漏的电子照相感光构件，具有电子照相感光构件的处理盒和电子照相设备以及制造电子照相感光构件的方法。 电子照相感光构件中的导电层包含涂覆有掺杂有铌或钽的氧化锡的金属氧化物颗粒。 关系：Ia＆nlE; 6,000和10＆nlE; Ib都满意。 进行试验前的导电层的体积电阻率为1.0×10 8Ω·cm·cm以上且5.0×10 12Ω·cm以下。
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10.发明授权公开(公告)号：US09599915B2
公开(公告)日：2017-03-21
申请号：US14629265
申请日：2015-02-23
发明人： Takashi Anezaki , Kazuhisa Shida , Haruyuki Tsuji , Atsushi Fujii , Nobuhiro Nakamura , Hiroyuki Tomono , Hideaki Matsuoka
摘要： A conductive layer of an electrophotographic photosensitive member includes a binder material, a first metal oxide particle, and a second metal oxide particle. The first metal oxide particle is a zinc oxide particle or tin oxide particle coated with tin oxide doped with phosphorus, tungsten, niobium, tantalum, or fluorine. The second metal oxide particle is an uncoated zinc oxide particle or tin oxide particle. The content of the first metal oxide particle is not less than 20% by volume and not more than 50% by volume based on the total volume of the conductive layer. The content of the second metal oxide particle is not less than 0.1% by volume and not more than 15% by volume based on the total volume of the conductive layer, and not less than 0.5% by volume and not more than 30% by volume based on the content of the first metal oxide particle.
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