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1. 发明申请

US20200064749A1 ELECTROPHOTOGRAPHIC PHOTOSENSITIVE MEMBER, PROCESS CARTRIDGE AND ELECTROPHOTOGRAPHIC APPARATUS 审中-公开
公开(公告)号：US20200064749A1
公开(公告)日：2020-02-27
申请号：US16542763
申请日：2019-08-16
申请人： CANON KABUSHIKI KAISHA
发明人： Takashi Anezaki , Taichi Sato , Kunihiko Sekido , Masashi Nishi , Atsushi Fujii
IPC分类号： G03G5/087 , G03G5/10 , G03G21/18 , G03G15/00
摘要： There is provided an electrophotographic photosensitive member that can achieve both of an adequately high initial sensitivity as the electrophotographic photosensitive member and reduction in the fluctuation of a light portion potential at the time of repeated use. An electrophotographic photosensitive member includes a support, an electroconductive layer and a photosensitive layer in this order, wherein the electroconductive layer contains a binder material and a metal oxide particle; the metal oxide particle has a core material containing a titanium oxide, and a covering layer which covers the core material and contains the titanium oxide; and when the oxygen deficiency ratio of the metal oxide particle is represented by A, the oxygen deficiency ratio of the core material is represented by B, and the oxygen deficiency ratio of the covering layer is represented by C, the Expressions (1) and (2) are satisfied: A≤2% (1) and 10×B

2. 发明申请

US20190163078A1 ELECTROPHOTOGRAPHIC PHOTOSENSITIVE MEMBER, PROCESS CARTRIDGE, AND ELECTROPHOTOGRAPHIC APPARATUS 审中-公开
公开(公告)号：US20190163078A1
公开(公告)日：2019-05-30
申请号：US16201713
申请日：2018-11-27
申请人： CANON KABUSHIKI KAISHA
发明人： Takashi Anezaki , Taichi Sato , Atsushi Fujii
IPC分类号： G03G5/05 , G03G21/18 , G03G5/06 , G03G15/04
CPC分类号： G03G5/0567 , G03G5/0662 , G03G5/101 , G03G5/104 , G03G5/142 , G03G5/144 , G03G15/04036 , G03G21/1814
摘要： An electrophotographic photosensitive member includes a support member, an electroconductive layer, and a photosensitive layer, in this order. The electroconductive layer contains a binder resin, electrically conductive first metal oxide particles, and second metal oxide particles. The refractive index Rb of the binder resin, the refractive index Rc of the first metal oxide particles, and the refractive index Rh of the second metal oxide particles satisfy the relationships: |Rb−Rc|≤0.35 and |Rb−Rh|≥0.65. The electroconductive layer has a volume resistivity of 1.0×106 Ω·cm to 1.0×1013 Ω·cm, and the ratio of the specific gravity of the first metal oxide particles to the specific gravity of the second metal oxide particles is 0.85 to 1.20.

3. 发明申请

US20180246427A1 ELECTROPHOTOGRAPHIC PHOTOSENSITIVE MEMBER, PROCESS CARTRIDGE, AND ELECTROPHOTOGRAPHIC APPARATUS 审中-公开
公开(公告)号：US20180246427A1
公开(公告)日：2018-08-30
申请号：US15903802
申请日：2018-02-23
申请人： CANON KABUSHIKI KAISHA
发明人： Kenichi Kaku , Takashi Anezaki , Taichi Sato , Jumpei Kuno , Atsushi Fujii
IPC分类号： G03G15/00 , G03G5/147 , G03G5/16
CPC分类号： G03G5/147 , G03G5/144 , G03G5/16
摘要： An electrophotographic photosensitive member includes a support member, an electroconductive layer, and a photosensitive layer in this order. The electroconductive layer contains a binder and particles. Each of the particles include a core made of a substance represented by general formula (1), and a coating layer coating the core and containing an electrically conductive material: M1M2O3 (1) wherein M1 represents an element selected from the group consisting of Sr, Li, Na, K, and Ba, and M2 represents an element selected from the group consisting of Ti, Nb, Ta, and Zr.

4. 发明申请

US20160216619A1 COATING FILM-REMOVING METHOD FOR CYLINDRICAL SUBSTRATE AND MANUFACTURING METHOD FOR ELECTROPHOTOGRAPHIC PHOTOSENSITIVE MEMBER 有权
标题翻译：圆柱形基材的涂膜去除方法及电摄影感光构件的制造方法
公开(公告)号：US20160216619A1
公开(公告)日：2016-07-28
申请号：US14995555
申请日：2016-01-14
申请人： CANON KABUSHIKI KAISHA
发明人： Nobuhiro Nakamura , Kazuko Sakuma , Takahisa Taniguchi , Tatsuya Yamaai , Atsushi Fujii , Akihiro Maruyama , Atsushi Okuda , Yuka Ishiduka , Kazunori Noguchi , Yuki Yamamoto
IPC分类号： G03G5/05
CPC分类号： G03G5/0525 , G03G5/0503
摘要： Provided is coating film-removing method for removing unnecessary coating film on outer peripheral surface of lower side of cylindrical substrate by dip coating, the method comprising: supplying solvent to inside of substrate; causing, through use of outer peripheral surface coating film-removing member configured to remove coating film at portion to be subjected to coating film removal in outer peripheral surface of the substrate, the outer peripheral surface coating film-removing member to abut against region ranging from upper end to lower end of coating film at the portion; and removing, under a state wherein the outer peripheral surface coating film-removing member abuts against the region, the coating film at the portion through rubbing by relatively rotating the substrate and the outer peripheral surface coating film-removing member while supplying the solvent, which is supplied to inside and then flows to lower end of the substrate, to abutting portion.
摘要翻译：本发明提供一种通过浸涂法在筒状基材的下侧的外周面除去不需要的涂膜的涂膜除去方法，其特征在于，包括：向基材内部供给溶剂; 通过使用外周面涂膜去除部件，其构造为在基板的外周面除去涂膜的部分去除涂膜，外周面涂膜除去部件抵靠该部分涂膜的上端至下端; 在外部表面被膜除去部件与该区域抵接的状态下，通过在供给溶剂的同时相对旋转基板和外周面涂膜除去部件，通过摩擦而将涂膜除去，供给到内部，然后流到基板的下端到邻接部分。

5. 发明申请

US20150086921A1 METHOD FOR PRODUCING ELECTROPHOTOGRAPHIC PHOTOSENSITIVE MEMBER 有权
标题翻译：生产电子光敏成员的方法
公开(公告)号：US20150086921A1
公开(公告)日：2015-03-26
申请号：US14396350
申请日：2013-06-17
申请人： CANON KABUSHIKI KAISHA
发明人： Atsushi Fujii , Hideaki Matsuoka , Haruyuki Tsuji , Nobuhiro Nakamura , Kazuhisa Shida
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。

6. 发明授权

US08980510B2 Electrophotographic photosensitive member, process cartridge and electrophotographic apparatus, and method for producing electrophotographic photosensitive member 有权
标题翻译：电子照相感光构件，处理盒和电子照相设备以及用于制造电子照相感光构件的方法
公开(公告)号：US08980510B2
公开(公告)日：2015-03-17
申请号：US13972688
申请日：2013-08-21
申请人： Canon Kabushiki Kaisha
发明人： Atsushi Fujii , Hiroyuki Tomono , Haruyuki Tsuji
IPC分类号： G03G5/00 , G03G5/047 , G03G5/10 , G03G5/14
CPC分类号： G03G5/047 , G03G5/104 , G03G5/144
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。

7. 发明申请

US20180348665A1 ELECTROPHOTOGRAPHIC PHOTOSENSITIVE MEMBER, PROCESS CARTRIDGE, AND ELECTROPHOTOGRAPHIC APPARATUS 审中-公开
公开(公告)号：US20180348665A1
公开(公告)日：2018-12-06
申请号：US15992605
申请日：2018-05-30
申请人： CANON KABUSHIKI KAISHA
发明人： Taichi Sato , Jumpei Kuno , Kenichi Kaku , Takashi Anezaki , Atsushi Fujii
IPC分类号： G03G15/08 , G03G15/02 , G03G15/18 , G03G15/16
CPC分类号： G03G15/0865 , G03G5/104 , G03G5/144 , G03G15/02 , G03G15/16 , G03G15/18
摘要： Provided is an electrophotographic photosensitive member capable of achieving both high leak resistance and reduction in variations in dark part potential and bright part potential due to repeated use even when CB is used for an electrically conductive layer. An electrophotographic photosensitive member including: a support, an electrically conductive layer, and a photosensitive layer, sequentially, wherein the electrically conductive layer contains a binder resin and carbon black, a number average primary particle diameter of the carbon black is 200 nm or more and 500 nm or less, an average inter-particle distance of the carbon black is 200 nm or more and 600 nm or less, a coefficient of variation of an inter-particle distance is 1.2 or less, and SF-1 of the carbon black is 150 or less.

8. 发明申请

US20180246441A1 ELECTROPHOTOGRAPHIC PHOTOSENSITIVE MEMBER, PROCESS CARTRIDGE, AND ELECTROPHOTOGRAPHIC APPARATUS 审中-公开
公开(公告)号：US20180246441A1
公开(公告)日：2018-08-30
申请号：US15904055
申请日：2018-02-23
申请人： CANON KABUSHIKI KAISHA
发明人： Takashi Anezaki , Kenichi Kaku , Taichi Sato , Jumpei Kuno , Atsushi Fujii
IPC分类号： G03G15/00
CPC分类号： G03G15/162 , G03G5/104 , G03G5/144 , G03G15/04 , G03G15/18 , G03G2221/183
摘要： An electrophotographic photosensitive member includes a support member, an electroconductive layer, and photosensitive layer in this order. The electroconductive layer contains a binder and particles. The particles have a core containing titanium oxide, and a coating layer coating the core and containing titanium oxide doped with niobium or tantalum.

9. 发明申请

US20180246426A1 ELECTROPHOTOGRAPHIC PHOTOSENSITIVE MEMBER, PROCESS CARTRIDGE AND ELECTROPHOTOGRAPHIC APPARATUS 审中-公开
公开(公告)号：US20180246426A1
公开(公告)日：2018-08-30
申请号：US15901128
申请日：2018-02-21
申请人： CANON KABUSHIKI KAISHA
发明人： Jumpei Kuno , Kenichi Kaku , Taichi Sato , Takashi Anezaki , Atsushi Fujii
IPC分类号： G03G5/14
CPC分类号： G03G5/144 , G03G2215/00962 , G03G2221/183
摘要： Disclosed herein is an electrophotographic photosensitive member in which leakage hardly occurs even in the case of using a layer containing metal oxide particles as an electrically conductive layer in the electrophotographic photosensitive member, and which is compatible with definition in output images, the electrophotographic photosensitive member sequentially including: a support, an electrically conductive layer, and a photosensitive layer, the electrically conductive layer containing a binder material and particles represented by General Formula (1). Nb2.00O5.00-XNY (1) (In Formula (1), Nb is a niobium atom, O is an oxygen atom, N is a nitrogen atom, and 0.00

10. 发明申请

US20180246425A1 ELECTROPHOTOGRAPHIC PHOTOSENSITIVE MEMBER, PROCESS CARTRIDGE AND ELECTROPHOTOGRAPHIC APPARATUS 审中-公开
公开(公告)号：US20180246425A1
公开(公告)日：2018-08-30
申请号：US15895148
申请日：2018-02-13
申请人： CANON KABUSHIKI KAISHA
发明人： Jumpei Kuno , Takashi Anezaki , Taichi Sato , Kenichi Kaku , Atsushi Fujii
IPC分类号： G03G5/14 , G03G5/06
CPC分类号： G03G5/144 , G03G5/04 , G03G5/0696 , G03G2215/00957
摘要： Provided is an electrophotographic photosensitive member which can simultaneously achieve less occurrence of leakage and the definition of an output image even when being an electrophotographic photosensitive member where a layer containing a metal oxide particle is adopted as an electroconductive layer, and which includes a support, an electroconductive layer and a photosensitive layer in this order, wherein the electroconductive layer contains a binder material and a particle represented by general formula (1): TiO2.00−XNY (1) wherein Ti represents a titanium atom, O represents an oxygen atom, N represents a nitrogen atom and 0.00

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