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1. 发明申请

US20210116860A1 ELECTROPHOTOGRAPHIC APPARATUS, PROCESS CARTRIDGE, AND CARTRIDGE SET 有权
公开(公告)号：US20210116860A1
公开(公告)日：2021-04-22
申请号：US17071283
申请日：2020-10-15
申请人： CANON KABUSHIKI KAISHA
发明人： Yoshitaka Suzumura , Hiroyuki Tomono , Takuya Mizuguchi , Osamu Matsushita , Shunsuke Matsushita , Masahiro Kurachi , Kazuhiro Yamauchi
IPC分类号： G03G21/18 , G03G9/087 , G03G9/08 , C08K3/04 , C08K3/26 , C08L19/00
摘要： An electrophotographic apparatus comprising an electrophotographic photosensitive member, a charging device and a developing device, wherein the charging device comprises a conductive member arranged to be capable of contacting the electrophotographic photosensitive member, a conductive layer of the conductive member comprises a matrix domain structure, at least a part of the domains Dt is exposed at the conductive member outer surface, the matrix has a volume resistivity R1 of larger than 1.00×1012 Ω·cm, the domains Dt has a volume resistivity of smaller than R1, the developing device comprises the toner, domains Dc formed of the crystalline material exist in a cross section of the toner, distances between adjacent wall surfaces of the domains Dc is from 30 to 1,100 nm, and a weight-average particle diameter D4 of the toner and distances Dms between adjacent wall surfaces between the domains Dt satisfies D4≥Dms.

2. 发明授权

US09753385B2 Electrophotographic photosensitive member, method for manufacturing electrophotographic photosensitive member, process cartridge, and electrophotographic apparatus 有权
公开(公告)号：US09753385B2
公开(公告)日：2017-09-05
申请号：US15054017
申请日：2016-02-25
申请人： CANON KABUSHIKI KAISHA
发明人： Yota Ito , Daisuke Miura , Shoma Hinata , Hiroyuki Tomono , Takashi Anezaki , Tatsuya Yamaai , Kazumichi Sugiyama , Masataka Kawahara , Hirotoshi Uesugi , Akihiro Maruyama , Hirofumi Kumoi , Masato Tanaka
IPC分类号： G03G5/00 , G03G5/05 , G03G5/047 , G03G5/147
CPC分类号： G03G5/0564 , G03G5/047 , G03G5/0525 , G03G5/14756
摘要： An electrophotographic photosensitive member has a support, a charge generation layer, and a charge transport layer in this order, the charge transport layer containing a charge transport material. The charge transport layer is a surface layer of the electrophotographic photosensitive member and contains a polycarbonate resin having a structural unit selected from group A and a structural unit selected from group B (groups A and B defined in the disclosure).

3. 发明授权

US09372419B2 Electrophotographic photosensitive member, process cartridge, and electrophotographic apparatus 有权
标题翻译：电子照相感光构件，处理盒和电子照相设备
公开(公告)号：US09372419B2
公开(公告)日：2016-06-21
申请号：US14418868
申请日：2013-08-29
申请人： CANON KABUSHIKI KAISHA
发明人： Haruyuki Tsuji , Atsushi Fujii , Kazuhisa Shida , Nobuhiro Nakamura , Hideaki Matsuoka , Hiroyuki Tomono
IPC分类号： G03G15/00 , G03G5/08 , G03G5/087 , G03G5/10 , G03G5/14
CPC分类号： G03G5/087 , G03G5/104 , G03G5/144
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＆。

4. 发明申请

US20140004453A1 ELECTROPHOTOGRAPHIC PHOTOSENSITIVE MEMBER, PROCESS CARTRIDGE, AND ELECTROPHOTOGRAPHIC APPARATUS 有权
标题翻译：电子照相感光元件，工艺盒和电子照相设备
公开(公告)号：US20140004453A1
公开(公告)日：2014-01-02
申请号：US13930368
申请日：2013-06-28
申请人： CANON KABUSHIKI KAISHA
发明人： Kenichi Kaku , Michiyo Sekiya , Kunihiko Sekido , Atsushi Okuda , Nobuhiro Nakamura , Yota Ito , Hiroyuki Tomono , Yuka Ishiduka
IPC分类号： G03G15/00
CPC分类号： G03G5/047 , G03G5/04 , G03G5/043 , G03G5/055 , G03G5/0589 , G03G5/0592 , G03G5/0605 , G03G5/0607 , G03G5/0614 , G03G5/0648 , G03G5/0651 , G03G5/0675 , G03G5/0696 , G03G5/075 , G03G5/076 , G03G5/142
摘要： An electrophotographic photosensitive member has a laminated body, and a hole transporting layer formed on the laminated body, wherein the laminated body is a laminated body having a conductive support, an electron transporting layer and a charge generating layer. When an impedance is measured by forming a circular-shaped gold electrode having a thickness of 300 nm and a diameter of 10 mm on a surface of the charge generating layer of the laminated body by sputtering, and applying an alternating electric field of 100 mV and 0.1 Hz between the conductive support and the gold electrode, the laminated body of the electrophotographic photosensitive member satisfies the following expression (1): R_opt/R_dark≦0.95 (1)
摘要翻译：电子照相感光构件具有层叠体和形成在层叠体上的空穴传输层，其中层叠体是具有导电性载体，电子传输层和电荷产生层的层叠体。当通过溅射在层压体的电荷产生层的表面上形成厚度为300nm，直径为10mm的圆形金电极来测量阻抗时，并施加100mV的交变电场，导电支撑体和金电极之间的0.1Hz，电子照相感光体的层叠体满足下式（1）：R_opt/R_dark@0.95（1）

5. 发明授权

US11360426B2 Electrophotographic apparatus, process cartridge, and cartridge set 有权
公开(公告)号：US11360426B2
公开(公告)日：2022-06-14
申请号：US17071283
申请日：2020-10-15
申请人： CANON KABUSHIKI KAISHA
发明人： Yoshitaka Suzumura , Hiroyuki Tomono , Takuya Mizuguchi , Osamu Matsushita , Shunsuke Matsushita , Masahiro Kurachi , Kazuhiro Yamauchi
IPC分类号： G03G21/18 , G03G15/02 , G03G9/087 , G03G9/08
摘要： An electrophotographic apparatus comprising an electrophotographic photosensitive member, a charging device and a developing device, wherein the charging device comprises a conductive member arranged to be capable of contacting the electrophotographic photosensitive member, a conductive layer of the conductive member comprises a matrix domain structure, at least a part of the domains Dt is exposed at the conductive member outer surface, the matrix has a volume resistivity R1 of larger than 1.00×1012 Ω·cm, the domains Dt has a volume resistivity of smaller than R1, the developing device comprises the toner, domains Dc formed of the crystalline material exist in a cross section of the toner, distances between adjacent wall surfaces of the domains Dc is from 30 to 1,100 nm, and a weight-average particle diameter D4 of the toner and distances Dms between adjacent wall surfaces between the domains Dt satisfies D4≥Dms.

6. 发明申请

US20200285164A1 TONER 审中-公开
公开(公告)号：US20200285164A1
公开(公告)日：2020-09-10
申请号：US16802814
申请日：2020-02-27
申请人： CANON KABUSHIKI KAISHA
发明人： Hiroki Akiyama , Shuhei Moribe , Hiroyuki Tomono , Tatsuya Saeki , Hiroki Kagawa , Atsuhiko Ohmori , Katsuhisa Yamazaki
IPC分类号： G03G9/087
摘要： A toner including a toner particle containing a binder resin, wherein the binder resin contains a crystalline resin, and in viscoelasticity measurement of the toner with Tp being a peak temperature of an endothermic peak derived from the crystalline resin in DSC of the toner, given G′(Tp—5, 0.01 Hz) as a storage modulus at a temperature of Tp—5° C. and a frequency of 0.01 Hz, G′(Tp—5, 10 Hz) as a storage modulus at a temperature of Tp—5° C. and a frequency of 10 Hz, and G′(Tp—30, 10 Hz) as a storage modulus at a temperature of Tp—30° C. and a frequency of 10 Hz, the following formulae are satisfied: G′(Tp—30,10 Hz)/G′(Tp—5,0.01 Hz)≤1.40 G′(Tp—5,10 Hz)/G′(Tp—5,0.01 Hz)≤2.20.

7. 发明申请

US20180329323A1 TONER, AND EXTERNAL ADDITIVE FOR TONER 审中-公开
公开(公告)号：US20180329323A1
公开(公告)日：2018-11-15
申请号：US15969192
申请日：2018-05-02
申请人： CANON KABUSHIKI KAISHA
发明人： Sho Kimura , Shuhei Moribe , Takashi Matsui , Hiroyuki Tomono , Shotaro Nomura , Atsuhiko Ohmori , Takuya Mizuguchi , Tatsuya Saeki , Katsuhisa Yamazaki
IPC分类号： G03G9/08 , G03G9/087 , G03G9/083
CPC分类号： G03G9/0825 , G03G9/0819 , G03G9/0833 , G03G9/08755 , G03G9/08764 , G03G9/08795 , G03G9/08797 , G03G9/09733 , G03G9/09775
摘要： A toner comprising: a toner particle containing a binder resin and a colorant; and an external additive, wherein the external additive is a composite particle having an organic substance and an organosilicon polymer coating layer on the surface of the organic substance, and when a curve for the variation (dE′/dT) in the storage elastic modulus E′ of the toner with respect to temperature T [° C.] is obtained on the basis of a curve of the temperature T—the storage elastic modulus E′ [Pa] of the toner, as determined by powder dynamic viscoelasticity measurements of the toner, the relative minimum value on the lowest temperature side between the onset temperature and 90° C. is −1.35×108 or less.

8. 发明授权

US09857704B2 Electrophotographic photosensitive member, process cartridge, and electrophotographic apparatus 有权
公开(公告)号：US09857704B2
公开(公告)日：2018-01-02
申请号：US14832720
申请日：2015-08-21
申请人： CANON KABUSHIKI KAISHA
发明人： Yota Ito , Hiroyuki Tomono , Takashi Anezaki , Daisuke Miura , Harunobu Ogaki
IPC分类号： G03G15/02 , G03G5/047 , G03G5/14 , G03G5/05 , G03G15/08 , G03G15/00
CPC分类号： G03G5/047 , G03G5/056 , G03G5/0564 , G03G5/144 , G03G15/025 , G03G15/0813 , G03G15/751
摘要： A process cartridge includes an electrophotographic photosensitive member and a gap retaining member, where the electrophotographic photosensitive member includes a first region having an undercoat layer, a charge generating layer, and a charge transporting layer on a support in this order and a second region having an undercoat layer and a charge transporting layer on a support in this order, the undercoat layer contains a metal oxide particle and any one of an urethane resin, an amino resin, and a polyamide resin as a binder resin, and the charge transporting layer contains a charge transporting substance and at least one selected from the group consisting of a polycarbonate resin and a polyester resin, and where the gap retaining member comes into contact with a surface of the second region of the electrophotographic photosensitive member.

9. 发明授权

US09851646B2 Electrophotographic apparatus and process cartridge 有权
公开(公告)号：US09851646B2
公开(公告)日：2017-12-26
申请号：US15427102
申请日：2017-02-08
申请人： CANON KABUSHIKI KAISHA
发明人： Hiroyuki Tomono , Daisuke Miura , Takashi Anezaki , Yota Ito , Harunobu Ogaki
IPC分类号： G03G5/04 , G03G21/18 , G03G15/02
CPC分类号： G03G5/04 , G03G5/047 , G03G5/147 , G03G15/0189 , G03G15/0233 , G03G15/75 , G03G21/18 , G03G21/1814 , G03G2215/0132
摘要： Provided is an electrophotographic apparatus, including an electrophotographic photosensitive member, a charging unit arranged in a non-abutment manner with respect to the electrophotographic photosensitive member, a cleaning unit or a developing unit arranged in abutment against the electrophotographic photosensitive member, and a transferring unit.

10. 发明授权

US09599915B2 Electrophotographic photosensitive member, process cartridge, and electrophotographic apparatus 有权
公开(公告)号：US09599915B2
公开(公告)日：2017-03-21
申请号：US14629265
申请日：2015-02-23
申请人： CANON KABUSHIKI KAISHA
发明人： Takashi Anezaki , Kazuhisa Shida , Haruyuki Tsuji , Atsushi Fujii , Nobuhiro Nakamura , Hiroyuki Tomono , Hideaki Matsuoka
IPC分类号： G03G5/14 , G03G5/087 , G03G5/08
CPC分类号： G03G5/087 , G03G5/08 , G03G5/14 , G03G5/144
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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