公开(公告)号：US08846287B2

公开(公告)日：2014-09-30

申请号：US14101299

申请日：2013-12-09

Applicant: Canon Kabushiki Kaisha

Inventor： Masaki Yamada ,  Kazutoshi Ishida ,  Minoru Ito ,  Kazuhito Wakabayashi ,  Tomoya Uesugi

IPC: G03G15/08

CPC classification number: G03G15/06 ,  G03G15/0818 ,  G03G15/75 ,  Y10T428/31551 ,  Y10T428/31598

Abstract: A high quality electrophotographic member that is excellent in deformation recovery property under high-temperature and high-humidity and that also satisfies filming resistance under low-temperature and low-humidity is provided.The electrophotographic member includes a substrate, an elastic layer, and a surface layer containing a urethane resin, wherein the urethane resin has a partial structure having at least one structure selected from the group consisting of structures of structural formulae (1) to (7) between adjacent two urethane linkages, and the urethane resin further has a partial structure derived from a reaction of a compound represented by a structural formula (8) with a polyisocyanate.

Abstract translation: 提供了一种在高温高湿下变形恢复性优异并且在低温低湿度下也具有耐成膜性的高品质的电子照相部件。 电子照相构件包括基材，弹性层和含有聚氨酯树脂的表面层，其中所述聚氨酯树脂具有至少一种选自结构式（1）至（7）的结构的结构的部分结构， 在相邻的两个氨基甲酸酯键之间，并且聚氨酯树脂还具有衍生自由结构式（8）表示的化合物与多异氰酸酯的反应的部分结构。

公开(公告)号：US08837985B2

公开(公告)日：2014-09-16

申请号：US14109886

申请日：2013-12-17

Applicant: Canon Kabushiki Kaisha

Inventor： Kazutoshi Ishida ,  Masaki Yamada ,  Minoru Ito ,  Kazuhito Wakabayashi ,  Tomoya Uesugi

IPC: G03G15/06 ,  B32B27/40 ,  C08G18/70

CPC classification number: G03G15/08 ,  G03G15/0233 ,  G03G15/0818 ,  Y10T428/31551 ,  Y10T428/31598 ,  Y10T428/31855

Abstract: Provided is an electrophotographic member, which hardly changes in performance even when being left to stand for a long time period. The electrophotographic member comprises a support, an elastic layer formed on the support, and a surface layer covering a surface of the elastic layer and containing a urethane resin, and in which the urethane resin comprises a reaction product of: a hydroxyl group-terminated prepolymer obtained by reacting a polyester polyol with a polyisocyanate; and an isocyanate-terminated prepolymer obtained by reacting a polyester polyol with a polyisocyanate.

Abstract translation: 本发明提供一种即使在长时间放置时几乎不会改变性能的电子照相构件。 电子照相构件包括支撑体，形成在支撑体上的弹性层和覆盖弹性层的表面并含有聚氨酯树脂的表面层，其中聚氨酯树脂包含反应产物：羟基封端的预聚物 通过使聚酯多元醇与多异氰酸酯反应获得; 和通过聚酯多元醇与多异氰酸酯反应获得的异氰酸酯封端的预聚物。

公开(公告)号：US12158724B2

公开(公告)日：2024-12-03

申请号：US17663305

申请日：2022-05-13

Applicant: CANON KABUSHIKI KAISHA

Inventor： Akio Nishi ,  Toru Ishii ,  Kazuaki Nagaoka ,  Tomoya Uesugi

IPC: G03G5/147 ,  G03G15/08

Abstract: An electrophotographic member includes an electro-conductive substrate, and an elastic layer as a surface layer, the elastic layer constituted by a single-layer, wherein the elastic layer includes a first resin, a second resin and an anion, the first resin is a crosslinked urethane resin, and the crosslinked urethane resin is a resin having a specific cationic structure in the molecule, the second resin is at least one of a crosslinked acrylic resin having an ether bond and a crosslinked epoxy resin having an ether bond, and in a first area of the elastic layer, the first are being from an outer surface of the elastic layer to a depth of 0.1 μm, the first resin and the second resin form an interpenetrating polymer network structure.

公开(公告)号：US11650516B2

公开(公告)日：2023-05-16

申请号：US17659418

申请日：2022-04-15

Applicant: CANON KABUSHIKI KAISHA

Inventor： Tomoya Uesugi ,  Kazuaki Nagaoka ,  Toru Ishii ,  Ryo Sugiyama ,  Akio Nishi ,  Kentaro Yamawaki ,  Minoru Nakamura

IPC: G03G15/08

CPC classification number: G03G15/0818 ,  G03G15/0806 ,  G03G15/0808 ,  G03G2215/0858 ,  G03G2215/0861

Abstract: Provided is a developing device including: a toner; and a developer carrying member. The developer carrying member includes an electroconductive substrate and a surface layer on the substrate, the surface layer being a single layer and including a matrix containing a crosslinked urethane resin as a binder, wherein E1 ≥200 MPa and 10 MPa≤E2 ≤100 MPa, where E1 is an elastic modulus of the matrix in a first region from an outer surface of the surface layer to a depth of 0.1 and E2 is an elastic modulus of the matrix in a second region from a depth of 1.0 to 1.1 μm from the outer surface. The toner includes a toner particle containing a binder resin and a colorant and having a Martens hardness of 85 to 1,100 MPa when measured under a condition of a maximum load of 2.0×10−4 N.

公开(公告)号：US20150185658A1

公开(公告)日：2015-07-02

申请号：US14571683

申请日：2014-12-16

Applicant: CANON KABUSHIKI KAISHA

Inventor： Kazuhito Wakabayashi ,  Masaki Yamada ,  Minoru Ito ,  Tomoya Uesugi ,  Michihisa Magome ,  Takashi Matsui

IPC: G03G15/08 ,  G03G9/00

CPC classification number: G03G15/0818 ,  G03G5/102 ,  G03G5/14708 ,  G03G9/09725

Abstract: A developing apparatus and a developing method that significantly suppress generation of fogging and form a high-quality electrophotographic images under any environments such as a high temperature and high humidity environment and a low temperature and low humidity environment are provided.A toner wherein a covering rate X1 of the surface of a toner particle with silica fine particles, which is determined by ESCA, is 40.0 to 75.0 area %, and the diffusion index represented by (Expression 1) diffusion index=X1/X2 satisfies (Expression 2) diffusion index≧−0.0042×X1+0.62 where in the theoretical covering rate with the silica fine particles is defined as X2; and a developing apparatus including a developing carrying member which is a surface layer formed of a urethane resin having a partial structure derived from a reaction of a polyisocyanate with a compound represented by Formula 1.

Abstract translation: 本发明提供了一种显影装置和显影方法，其特别是在高温高湿环境，低温低湿环境等环境下，显着地抑制雾化的产生，形成高质量的电子照相图像。 由ESCA测定的调色剂颗粒与二氧化硅微粒表面的覆盖率X1为40.0〜75.0面积％，由（表达式1）扩散指数= X1 / X2表示的扩散指数满足（ 表达式2）扩散指数≧-0.0042×X1 + 0.62其中二氧化硅微粒的理论覆盖率定义为X2; 以及显影装置，其包括显影承载构件，其是由具有由多异氰酸酯与式1表示的化合物的反应衍生的部分结构的聚氨酯树脂形成的表面层。

公开(公告)号：US20220276579A1

公开(公告)日：2022-09-01

申请号：US17663305

申请日：2022-05-13

Applicant: CANON KABUSHIKI KAISHA

Inventor： Akio Nishi ,  Toru Ishii ,  Kazuaki Nagaoka ,  Tomoya Uesugi

IPC: G03G5/147 ,  G03G15/08

Abstract: An electrophotographic member includes an electro-conductive substrate, and an elastic layer as a surface layer, the elastic layer constituted by a single-layer, wherein the elastic layer includes a first resin, a second resin and an anion, the first resin is a crosslinked urethane resin, and the crosslinked urethane resin is a resin having a specific cationic structure in the molecule, the second resin is at least one of a crosslinked acrylic resin having an ether bond and a crosslinked epoxy resin having an ether bond, and in a first area of the elastic layer, the first are being from an outer surface of the elastic layer to a depth of 0.1 μm, the first resin and the second resin form an interpenetrating polymer network structure.

公开(公告)号：US09442419B2

公开(公告)日：2016-09-13

申请号：US14571683

申请日：2014-12-16

Applicant: CANON KABUSHIKI KAISHA

Inventor： Kazuhito Wakabayashi ,  Masaki Yamada ,  Minoru Ito ,  Tomoya Uesugi ,  Michihisa Magome ,  Takashi Matsui

IPC: G03G15/08 ,  G03G5/10 ,  G03G5/147 ,  G03G9/097

CPC classification number: G03G15/0818 ,  G03G5/102 ,  G03G5/14708 ,  G03G9/09725

Abstract: A developing apparatus and a developing method that significantly suppress generation of fogging and form a high-quality electrophotographic images under any environments such as a high temperature and high humidity environment and a low temperature and low humidity environment are provided.A toner wherein a covering rate X1 of the surface of a toner particle with silica fine particles, which is determined by ESCA, is 40.0 to 75.0 area %, and the diffusion index represented by (Expression 1) diffusion index=X1/X2 satisfies (Expression 2) diffusion index≧−0.0042×X1+0.62 where in the theoretical covering rate with the silica fine particles is defined as X2; and a developing apparatus including a developing carrying member which is a surface layer formed of a urethane resin having a partial structure derived from a reaction of a polyisocyanate with a compound represented by Formula 1.

Abstract translation: 由ESCA测定的调色剂颗粒与二氧化硅微粒表面的覆盖率X1为40.0〜75.0面积％，由（表达式1）扩散指数= X1 / X2表示的扩散指数满足（ 表达式2）扩散指数≧-0.0042×X1 + 0.62其中二氧化硅微粒的理论覆盖率定义为X2; 以及显影装置，其包括显影承载构件，其是由具有由多异氰酸酯与式1表示的化合物的反应衍生的部分结构的聚氨酯树脂形成的表面层。

公开(公告)号：US20160161876A1

公开(公告)日：2016-06-09

申请号：US14954435

申请日：2015-11-30

Applicant: CANON KABUSHIKI KAISHA

Inventor： Tomoya Uesugi ,  Minoru Ito ,  Kazuhito Wakabayashi ,  Masaki Yamada

IPC: B05C1/08 ,  B05D1/18 ,  G03G15/02

CPC classification number: G03G15/0233 ,  G03G15/0818

Abstract: A member for electrophotography includes a base, an elastic layer on the base, the elastic layer comprising a silicone rubber, and a resin layer on the elastic layer and containing a resin. The resin in the resin layer and a silicon atom in the silicone rubber contained in the elastic layer bond to each other with a linking group. The linking group has a particular structure, and the linking group has a molecular weight of 58 or more and 550 or less.

Abstract translation: 电子照相用构件包括基材，基材上的弹性层，弹性层，硅橡胶，弹性层上的树脂层，含有树脂。 包含在弹性层中的树脂层中的树脂和硅橡胶中的硅原子以连接基团彼此结合。 连接基具有特定结构，连接基的分子量为58以上且550以下。

公开(公告)号：US20150185656A1

公开(公告)日：2015-07-02

申请号：US14573375

申请日：2014-12-17

Applicant: CANON KABUSHIKI KAISHA

Inventor： Minoru Ito ,  Masaki Yamada ,  Kazuhito Wakabayashi ,  Tomoya Uesugi ,  Michihisa Magome ,  Takashi Matsui

IPC: G03G15/08

CPC classification number: G03G15/0818 ,  G03G9/00 ,  G03G9/0806 ,  G03G9/09725

Abstract: The developing apparatus includes a toner, a developing container, a developing roller, and a toner layer thickness controlling member, wherein the toner contains toner particles containing a binder resin and a colorant, and silica fine particles; the covering rate X1 of the surface of each of the toner particles with the silica fine particles is 40.0 to 75.0 area %; and a diffusion index represented by X1/X2 satisfies a predetermined range where the theoretical covering rate with the silica fine particles is defined as X2, the developing roller includes a substrate, a base layer, and a coverage portion; and the volume resistivity of the coverage portion and the average thickness of the coverage portion are within predetermined ranges.

Abstract translation: 显影装置包括调色剂，显影容器，显影辊和调色剂层厚度控制构件，其中调色剂含有含有粘合剂树脂和着色剂的调色剂颗粒和二氧化硅微粒; 每个调色剂颗粒与二氧化硅细颗粒的表面的覆盖率X1为40.0至75.0面积％; 并且由X1 / X2表示的扩散指数满足将二氧化硅微粒的理论覆盖率定义为X2的规定范围，显影辊包括基板，基底层和覆盖部; 并且覆盖部分的体积电阻率和覆盖部分的平均厚度在预定范围内。

公开(公告)号：US20220100113A1

公开(公告)日：2022-03-31

申请号：US17480797

申请日：2021-09-21

Applicant: CANON KABUSHIKI KAISHA

Inventor： Masatake Tanaka ,  Tomoya Uesugi ,  Shintaro Kawaguchi ,  Masamichi Sato

IPC: G03G9/097 ,  G03G9/08 ,  G03G15/08 ,  G03G21/18

Abstract: A process cartridge includes a photosensitive member, a toner, and a developing roller, a surface layer of the photosensitive member has a Martens hardness of 245 to 300 N/mm2, the developing roller has a single-layered surface layer containing a substrate and a binder resin; when an elastic modulus of the binder resin in a first region is E1, and an elastic modulus of the binder resin in a second region is E2, E1≥200 MPa and 10 MPa≤E2≤150 MPa are satisfied; the elastic modulus in the second region continuously decreases from that in the first region; the toner comprises a toner particle and an external additive A; the external additive A is a silica particle having a major diameter of 40 to 400 nm; and a coverage of the external additive A with respect to surface of the toner particle is 5.0% or more.