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    3.
    发明专利
    未知

    公开(公告)号：DE102004032220A1

    公开(公告)日：2005-01-20

    申请号：DE102004032220

    申请日：2004-07-02

    Applicant: KAO CORP

    Inventor： KAMEYAMA KOJI ,  KAMIYOSHI NOBUMICHI ,  KATAYAMA KOUHEI ,  KAWAJI HIROYUKI ,  YAMAZAKI MASAHITO

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

    Abstract: A toner for electrostatic image development, containing a resin binder containing a polyester having monomer units wherein at least one monomer is selected from the group consisting of fumaric acid and maleic acid, including mixtures thereof; a colorant; and a charge control agent containing a negatively chargeable charge control agent and a positively chargeable charge control agent, wherein the unreacted monomers of fumaric acid, maleic acid or both fumaric acid and maleic acid are contained in the toner in an amount of 0.20% by weight or less. The toner for electrostatic image development of the present invention may be used for the development of a latent image formed in electrophotography, electrostatic recording method, electrostatic printing method or the like.

    4.
    发明专利
    未知

    公开(公告)号：DE10244951A1

    公开(公告)日：2003-06-26

    申请号：DE10244951

    申请日：2002-09-26

    Applicant: KAO CORP

    Inventor： YAMAZAKI MASAHITO ,  KAMEYAMA KOJI ,  AKIYAMA KOJI

    IPC: G03G9/08 ,  G03G9/097 ,  G03G9/10 ,  G03G9/107

    Abstract: A two-component developer comprising a toner onto which a hydrophobic silica having an average particle size of 25 nm or more is externally added, and a carrier having a saturation magnetization of from 50 to 95 Am2/kg, wherein the carrier has a ratio of surface resistivity to volume resistivity of from 1x102 to 1x104 m-1 at an electric field strength of 100 V/cm; and a method for development comprising applying the above two-component developer to an electrophotographic device comprising a photoconductor having a peripheral speed of 400 mm/sec or more, and developing a latent image. The two-component developer can be used for the development of a latent image formed in electrophotography, electrostatic recording method, electrostatic printing method or the like.

    Verfahren zur Tonerherstellung
    5.
    发明专利
    Verfahren zur Tonerherstellung 未知

    公开(公告)号：DE102010034952A1

    公开(公告)日：2011-03-24

    申请号：DE102010034952

    申请日：2010-08-20

    Applicant: KAO CORP

    Inventor： EIDA AKIHIRO ,  KAMEYAMA KOJI ,  SHIRAI EIJI

    IPC: G03G9/08 ,  G03G9/087

    Abstract: Ein Verfahren zur Herstellung eines Toners, beinhaltend die Schritte des Schmelzknetens mindestens eines Harzbindemittels und eines Farbmittels, um ein geknetetes Produkt zu erhalten (Schritt 1); und des Wärmebehandelns des im Schritt 1 erhaltenen gekneteten Produktes (Schritt 2), wobei das Harzbindemittel ein kristallines Harz und ein amorphes Harz enthält, wobei das kristalline Harz ein vorgegebenes Kompositharz, enthaltend (a) eine vorgegebene Polykondensationsharz-Komponente und (b) eine Styrolharz-Komponente in einem vorgegebenen Gewichtsverhältnis, enthält, wobei das Kompositharz in einer vorgegebenen Menge in dem Harzbindemittel enthalten ist. Der durch das vorstehende Verfahren erhaltene Toner wird z.B. bei der Entwicklung eines Latentbildes, das in der Elektrophotographie, einem elektrostatischen Aufzeichnungsverfahren, einem elektrostatischen Druckverfahren oder dergleichen erzeugt wird, verwendet.

    6.
    发明专利
    未知

    公开(公告)号：DE69519758T2

    公开(公告)日：2001-08-02

    申请号：DE69519758

    申请日：1995-03-08

    Applicant: KAO CORP

    Inventor： AKIYAMA KOJI ,  KAMEYAMA KOJI ,  SHIMOKUSA KOJI ,  KAWABE KUNIYASU

    IPC: G03G9/08 ,  G03G9/093

    Abstract: The encapsulated toner for heat-and-pressure fixing of the present invention has a heat-fusible core material containing at least a thermoplastic resin and a coloring agent and a shell formed thereon so as to cover the surface of the core material. Moreover, the encapsulated toner has the following properties: 1) The glass transition temperature ascribed to the thermoplastic resin used as a main component of the heat-fusible core material is 10 DEG C to 50 DEG C; 2) A minimum load required for 5% compression of a particle size of the encapsulated toner is from 5 to 50 mgf, and a minimum load required for 10% compression of a particle size of the encapsulated toner is from 10 to 100 mgf, when a compressive variation of one toner particle is measured by a micro compression testing machine under the given conditions; and 3) The difference in cohesiveness before and after keeping the toner standing at 50 DEG C for 24 hours, is not more than 10, wherein the cohesiveness is defined as the sum of values (a), (b), and (c) obtained by the following equations: each of the weight % in the equations being measured by a powder property analyzer.

    7.
    发明专利
    未知

    公开(公告)号：DE69407454T3

    公开(公告)日：2001-04-12

    申请号：DE69407454

    申请日：1994-03-14

    Applicant: KAO CORP

    Inventor： YASUDA SHIN-ICHIRO ,  KAWABE KUNIYASU ,  AKIYAMA KOJI ,  SASAKI MITSUHIRO ,  KAMEYAMA KOJI

    IPC: G03G9/093 ,  G03G13/08 ,  G03G9/09

    Abstract: A developing method of the present invention has the steps of forming a uniform layer of a nonmagnetic one-component toner on a developer carrying sleeve with a developer blade; rotating an electrostatic latent image forming member and the developer carrying sleeve; and applying the toner on the developer carrying sleeve onto an electrostatic latent image formed on the electrostatic latent image forming member. The toner used herein is an encapsulated toner having a heat-fusible core material and a shell formed thereon. By using this development for a nonmagnetic one-component toner of the present invention, clear images free from background can be stably formed for a large number of copying.

    8.
    发明专利
    未知

    公开(公告)号：DE69407454D1

    公开(公告)日：1998-02-05

    申请号：DE69407454

    申请日：1994-03-14

    Applicant: KAO CORP

    Inventor： YASUDA SHIN-ICHIRO ,  KAWABE KUNIYASU ,  AKIYAMA KOJI ,  SASAKI MITSUHIRO ,  KAMEYAMA KOJI

    IPC: G03G9/093 ,  G03G13/08 ,  G03G9/09

    Abstract: A developing method of the present invention has the steps of forming a uniform layer of a nonmagnetic one-component toner on a developer carrying sleeve with a developer blade; rotating an electrostatic latent image forming member and the developer carrying sleeve; and applying the toner on the developer carrying sleeve onto an electrostatic latent image formed on the electrostatic latent image forming member. The toner used herein is an encapsulated toner having a heat-fusible core material and a shell formed thereon. By using this development for a nonmagnetic one-component toner of the present invention, clear images free from background can be stably formed for a large number of copying.

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