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    TONER
    3.
    发明申请
    TONER 审中-公开

    公开(公告)号：US20190049869A1

    公开(公告)日：2019-02-14

    申请号：US16056630

    申请日：2018-08-07

    申请人： CANON KABUSHIKI KAISHA

    发明人： Kentaro Kamae ,  Ryuji Murayama ,  Junichi Tamura ,  Hayato Ida ,  Takashi Hirasa

    IPC分类号： G03G9/093 ,  G03G9/083

    CPC分类号： G03G9/09364 ,  G03G9/0833 ,  G03G9/08704 ,  G03G9/08728 ,  G03G9/09321 ,  G03G9/09328

    摘要： A toner including a toner particle having a core-shell structure that has a core formed from a resin 1 and a shell formed from a resin 2 on the surface of the core, wherein the resin 1 contains more than 50 mass % of an ester group-containing olefin-based copolymer, the ester group-containing olefin-based copolymer has a monomer unit Y1 represented by formula (1) below, and at least one type of monomer unit Y2 selected from the group consisting of monomer units represented by formula (2) and formula (3) below, the ester group concentration in the ester group-containing olefin-based copolymer is from 2 mass % to 18 mass %, and the resin 2 is an amorphous resin having a Tg value of from 50° C. to 70° C.

    Electrostatic latent image developing toner
    4.
    发明授权
    Electrostatic latent image developing toner 有权

    公开(公告)号：US10018933B2

    公开(公告)日：2018-07-10

    申请号：US15278361

    申请日：2016-09-28

    申请人： KYOCERA Document Solutions Inc.

    发明人： Masami Tsujihiro

    IPC分类号： G03G9/093

    CPC分类号： G03G9/09392 ,  G03G9/09314 ,  G03G9/09321 ,  G03G9/09371 ,  G03G9/09378

    摘要： An electrostatic latent image developing toner includes toner particles each including a toner core and a shell layer. The shell layer includes first and second domains. The first domain includes a first copolymer of a first main monomer having a mole fraction of at least 20 mol % and one or more first additional monomers each having a mole fraction of less than 20 mol %. The second domain includes a second copolymer of a second main monomer having a mole fraction of at least 20 mol % and one or more second additional monomers each having a mole fraction of less than 20 mol %. A difference in polymer SP value between the first and second main monomers is at least 0.5 and no greater than 5.0. The first and second additional monomers each include one or more common monomers having a homopolymerization glass transition point of no greater than −20° C.

    Positively chargeable toner
    5.
    发明授权
    Positively chargeable toner 有权

    公开(公告)号：US10007202B2

    公开(公告)日：2018-06-26

    申请号：US15550908

    申请日：2016-07-01

    申请人： KYOCERA Document Solutions Inc.

    发明人： Seishi Ojima

    IPC分类号： G03G9/08 ,  G03G9/093 ,  G03G9/087

    CPC分类号： G03G9/09321 ,  G03G9/08711 ,  G03G9/08755 ,  G03G9/09307 ,  G03G9/09357 ,  G03G9/09371 ,  G03G9/09741

    摘要： A positively chargeable toner includes a plurality of toner particles each including a core and a shell layer disposed over a surface of the core. The core contains a polyester resin. The shell layer covers at least 40% and no greater than 80% of an area of the surface of the core, ζ(4) is greater than 0 V. ζ(6) is less than 0 V. A relationship represented by |ζ(3)−ζ(4)|>|ζ(6)−ζ(7)| is satisfied. ζ(3), ζ(4), ζ(6), and ζ(7) represent zeta potentials of the positively chargeable toner with the toner particles having no external additive. ζ(3), ζ(4), ζ(6), and ζ(7) are respectively measured in an aqueous medium at pH 3, pH 4, pH 6, and pH 7.

    ELECTROSTATIC LATENT IMAGE DEVELOPING TONER
    8.
    发明申请
    ELECTROSTATIC LATENT IMAGE DEVELOPING TONER 审中-公开

    公开(公告)号：US20180095375A1

    公开(公告)日：2018-04-05

    申请号：US15567301

    申请日：2016-12-28

    申请人： KYOCERA Document Solutions Inc.

    发明人： Tomoyasu ASAKAWA

    IPC分类号： G03G9/093

    CPC分类号： G03G9/09321 ,  G03G9/08 ,  G03G9/087 ,  G03G9/093 ,  G03G9/09307 ,  G03G9/09342 ,  G03G9/09371 ,  G03G9/09392

    摘要： An electrostatic latent image developing toner includes a plurality of toner particles each including a toner mother particle and inorganic particles attached to a surface of the toner mother particle. The toner mother particle includes a toner core (11) and a shell layer (12) covering a surface of the toner core (11). The shell layer (12) includes film-shaped first domains (12a) and particle-shaped second domains (12b). The first domains (12a) are substantially formed from a non-cross-linked resin. The second domains (12b) are substantially formed from a cross-linked resin. The cross-linked resin has a glass transition point higher by 40° C. or more than that of the non-cross-linked resin. The first domains (12a) have a surface adsorption force of at least 20.0 nN and no greater than 40.0 nN. The second domains (12b) have a surface adsorption force of at least 4.0 nN and less than 20.0 nN.