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    CHARGE CONTROL AGENT AND TONER FOR ELECTROSTATIC IMAGE DEVELOPMENT CONTAINING SAME
    3.
    发明公开
    CHARGE CONTROL AGENT AND TONER FOR ELECTROSTATIC IMAGE DEVELOPMENT CONTAINING SAME 审中-公开
    电荷控制剂和墨粉的静电图像开发秩序

    公开(公告)号：EP2682817A1

    公开(公告)日：2014-01-08

    申请号：EP12752693.7

    申请日：2012-02-27

    申请人： Orient Chemical Industries Co., Ltd.

    发明人： KURODA, Kazuyoshi

    IPC分类号： G03G9/097 ,  G03G9/087

    CPC分类号： G03G9/09733 ,  C08G8/14 ,  C08G8/24 ,  C09D161/06 ,  G03G9/08748 ,  G03G9/0975 ,  G03G9/09775

    摘要： Provided is a charge control agent that gives toner a practical level of negative chargeability, is colorless or a light color and can be used in a color toner, has an electrostatic charge from charging of a resin powder, such as the toner used, that is stable against environmental change, and has the characteristics of: excellent temporal stability of charge control characteristics, i.e., storage stability; excellent stability of charge control characteristics when repeatedly used a number of times, i.e., durability; and high stability without containing toxic heavy metals.
    The charge control agent comprises a phenol multimeric mixture containing a plurality of phenol multimeric types indicated by the following chemical formula (1) (wherein R 1 and R 2 are hydrogen atoms or alkyl groups, A is a 4-chlorophenol ring-containing group indicated by the following chemical formula (2) or the following chemical formula (3) (wherein R 3 and R 4 are hydrogen atoms or alkyl groups and m is an integer between 0 and 2), and x is an integer between 16 and 28 in the chemical formula (2) and a number in the range indicated by (14 - 2m)/(m+2) to (26 - 2m)/(m+2) in the chemical formula (3)).

    Toner for developing electrostatically charged images
    5.
    发明公开
    Toner for developing electrostatically charged images 审中-公开
    碳粉为发展带静电的图像

    公开(公告)号：EP2161623A3

    公开(公告)日：2011-02-23

    申请号：EP09011374.7

    申请日：2009-09-04

    申请人： Tomoegawa Co., Ltd.

    发明人： Suwa, Yoshihito ,  Takayanagi, Shigeyoshi ,  Kohata, Naoki

    IPC分类号： G03G9/087 ,  G03G9/09 ,  G03G9/097

    CPC分类号： G03G9/08704 ,  G03G9/08711 ,  G03G9/08755 ,  G03G9/08782 ,  G03G9/091 ,  G03G9/09733 ,  G03G9/0975 ,  G03G9/09775

    摘要： To provide toners having good color developing properties without being influenced by tones of charge control agents.
    MEANS FOR SOLVING
    A toner for developing electrostatically charged images containing at least a binder resin, a colorant and a charge control agent, wherein the charge control agent is an aromatic compound which generates at least sulfur dioxide and a butylphenol as thermally decomposed products when the temperature is raised from room temperature to 250°C at a rate of 10°C/min; and is any one of or a mixture of two or more of a substance of a chemical structure having both an aromatic ring to which one or more tert-butyl groups are attached and an aromatic ring to which one or more sulfonyl groups are attached, a mixture comprising a substance of a chemical structure having an aromatic ring to which one or more tert-butyl groups are attached and a substance of a chemical structure having an aromatic ring to which one or more sulfonyl groups are attached, and a substance of a chemical structure including an aromatic ring to which both one or more tert-butyl groups and one or more sulfonyl groups are attached.