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13 条记录 (耗时 0.019 秒)

    EXTERNAL ADDITIVE FOR TONER AND TONER
    5.
    发明公开
    EXTERNAL ADDITIVE FOR TONER AND TONER 审中-公开

    公开(公告)号：EP4372471A1

    公开(公告)日：2024-05-22

    申请号：EP23209996.0

    申请日：2023-11-15

    申请人： CANON KABUSHIKI KAISHA

    发明人： KANNO, Ichiro ,  ABE, Yukihiro ,  TAMURA, Junichi ,  KABURAGI, Mari ,  IDA, Hayato ,  SUZUKI, Masao ,  INOUE, Kei ,  HASEGAWA, Waka

    IPC分类号： G03G9/097

    CPC分类号： G03G9/09725 ,  G03G9/09716 ,  G03G9/09708 ,  G03G9/09775

    摘要： An external additive for toner comprising: a fine particle A containing, as a binder component, an organosilicon compound having a siloxane bond; and a fine particle B that is present on a surface of the fine particle A in a state of being at least partially embedded in the surface of the fine particle A, wherein the external additive for toner (i) has a number-average particle diameter of a primary particle of 0.03 µm or more and 0.30 µm or less, and (ii) has a Young's modulus of 10 GPa or more and 30 GPa or less, wherein content ratios, on a number basis, of the following unit (a), unit (b), and unit (c) in the fine particle Abased on all silicon atoms present in the fine particle A satisfy the following expressions (1) and (2). a+b+c≥0.80 b+c≥0.30

    EXTERNAL ADDITIVE FOR TONER AND TONER
    6.
    发明公开
    EXTERNAL ADDITIVE FOR TONER AND TONER 审中-公开

    公开(公告)号：EP4372470A1

    公开(公告)日：2024-05-22

    申请号：EP23209995.2

    申请日：2023-11-15

    申请人： CANON KABUSHIKI KAISHA

    发明人： ABE, Yukihiro ,  KANNO, Ichiro ,  TAMURA, Junichi ,  KABURAGI, Mari ,  IDA, Hayato ,  SUZUKI, Masao ,  INOUE, Kei ,  HASEGAWA, Waka

    IPC分类号： G03G9/097

    CPC分类号： G03G9/09708 ,  G03G9/09725 ,  G03G9/09775

    摘要： The external additive for toner includes an external additive particle containing: a fine particle A; and a plurality of fine particles B that are each present so as to partially protrude from a surface of the fine particle A, wherein the fine particle A (i) is a particle of an organosilicon compound having a siloxane bond, (ii) has a number-average particle diameter of 0.03 µm or more and 0.30 µm or less, and (iii) has an average circularity of 0.90 or more, wherein, when the number-average particle diameter of the fine particle A is represented by DA, and a number-average particle diameter of the plurality of fine particles B is represented by DB, DB/DA is 0.10 or more and 0.63 or less.

    EXTERNAL ADDITIVE PARTICLES, TONER, AND METHOD FOR PRODUCING EXTERNAL ADDITIVE PARTICLES
    7.
    发明公开
    EXTERNAL ADDITIVE PARTICLES, TONER, AND METHOD FOR PRODUCING EXTERNAL ADDITIVE PARTICLES 审中-公开

    公开(公告)号：EP4009108A1

    公开(公告)日：2022-06-08

    申请号：EP21208686.2

    申请日：2021-11-17

    申请人： Canon Kabushiki Kaisha

    发明人： SHIRAKAWA, Jun ,  MARUYAMA, Akio ,  INOUE, Kei ,  HASEGAWA, Waka ,  NAGASE, Yukio

    IPC分类号： G03G9/08 ,  G03G9/097

    摘要： External additive particles including a polymer containing a sulfur atom and a nitrogen atom, wherein the polymer includes a vinyl polymer moiety and a siloxane moiety, relative to a total number of carbon atoms, oxygen atoms, and silicon atoms constituting the external additive particles, a ratio of a number of the silicon atoms constituting the external additive particles is 4.0% or more and 25.0% or less, and in surfaces of the external additive particles analyzed by X-ray photoelectron spectroscopy, relative to a total number of carbon atoms, nitrogen atoms, oxygen atoms, silicon atoms, and sulfur atoms, a ratio of a number of the nitrogen atoms is 0.40% or more and 2.50% or less, and a ratio of a number of the sulfur atoms is 0.05% or more and 0.25% or less.

    LIQUID DEVELOPER AND METHOD FOR PRODUCING THE SAME
    8.
    发明公开
    LIQUID DEVELOPER AND METHOD FOR PRODUCING THE SAME 无效
    液体显影剂及其制备方法

    公开(公告)号：EP3304208A1

    公开(公告)日：2018-04-11

    申请号：EP16799738.6

    申请日：2016-04-20

    申请人： Canon Kabushiki Kaisha

    发明人： NISHIGUCHI, Kenji ,  INOUE, Kei

    IPC分类号： G03G9/13 ,  G03G9/12

    CPC分类号： G03G9/132 ,  G03G9/125

    摘要： The present invention provides a liquid developer in which a decrease in volume resistivity is suppressed and the stability of the migration of a toner particle is excellent. Therefore, the liquid developer of the present invention is a liquid developer including a toner particle including a colorant and a condensation polymer; and a carrier liquid, wherein the condensation polymer has acid functional groups, and at least some of the acid functional groups form a metallic salt.