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8 records (took 0.05 seconds)

    1.
    发明专利
    未知

    公开(公告)号：DE2815093A1

    公开(公告)日：1978-10-19

    申请号：DE2815093

    申请日：1978-04-07

    Applicant: MITA INDUSTRIAL CO LTD

    Inventor： NISHIBAYASHI KATSUMI ,  AMAGAI YOSHIMI ,  HIKAKE NORIO ,  KOUCHI TOSHIHIRO ,  AIZAWA TATSUO

    IPC: G03G9/08 ,  G03G9/087 ,  G03G9/097 ,  G03G9/10

    Abstract: A developer for electrostatic images consisting essentially of particles comprising a pigment, a binder and an offset-preventing agent selected from the group consisting of aliphatic fluorocarbon compounds and fluorochlorocarbon compounds is disclosed. When this developer is used, a high offset-preventing effect can be attained at the fixing step even if the amount incorporated of the offset-preventing agent is small, and further, the developing operation can be performed in good conditions. By incorporation of this offset-preventing agent, the flowability of particles of the developer and charge characteristics of the developer can be remarkably improved.

    3.
    发明专利
    未知

    公开(公告)号：DE2821422A1

    公开(公告)日：1978-12-14

    申请号：DE2821422

    申请日：1978-05-16

    Applicant: MITA INDUSTRIAL CO LTD

    Inventor： NISHIBAYASHI KATSUMI ,  AMAGAI YOSHIMI ,  HIKAKE NORIO ,  KOUCHI TOSHIHIRO

    IPC: G03G9/087 ,  G03G9/08

    Abstract: A developer for electrostatic images comprising a binder medium and a pigment dispersed in the binder medium is disclosed. This binder medium comprises (A) a thermoplastic or rubbery polymer containing a member selected from the group consisting of a halogen atom and a nitrile group at a concentration of at least 100 milliequivalents per 100 g of the polymer and (B) a binder having a melting temperature lower than that of the polymer (A) at an (A)/(B) mixing weight ratio of from 1/20 to 1/1. The halogen- or nitrile-containing polymer (A) is present in the form of fine particles dispersed in the continuous phase of the binder (B). This developer has good flowability and charge characteristics at the developing step and shows an excellent offset-preventing effect at the fixing step.

    DEVELOPER FOR ELECTROSTATIC IMAGES AND PROCESS FOR PREPARATION THEREOF
    4.
    发明专利
    DEVELOPER FOR ELECTROSTATIC IMAGES AND PROCESS FOR PREPARATION THEREOF 未知

    公开(公告)号：CA1118483A

    公开(公告)日：1982-02-16

    申请号：CA303431

    申请日：1978-05-16

    Applicant: MITA INDUSTRIAL CO LTD

    Inventor： NISHIBAYASHI KATSUMI ,  AMAGAI YOSHIMI ,  HIKAKE NORIO ,  KOUCHI TOSHIHIRO ,  AIZAWA TATSUO

    IPC: G03G9/087 ,  G03G13/08

    Abstract: A developer for electrostatic images comprising a binder medium and a pigment dispersed in the binder medium is disclosed. This binder medium comprises (A) a thermoplastic or rubbery polymer containing a member selected from the group consisting of a halogen atom and a nitrile group at a concentration of at least 100 milliequivalents per 100 g of the polymer and (B) a binder having a melting temperature lower than that Or the polymer (A) at an (A)/(B) mixing weight ratio of from 1/20 to 1/1, The halogen- or nitrile-containing polymer (A) is present in the form of fine particles dispersed in the continuous phase of the binder (B). This developer has good flowability and charge characteristics at the developing step and shows an excellent offset-preventing effect at the fixing step.

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