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    TONER AND DEVELOPER
    3.
    发明公开
    TONER AND DEVELOPER 有权
    TONER UND ENTWICKLER

    公开(公告)号：EP2324395A4

    公开(公告)日：2012-11-07

    申请号：EP09813049

    申请日：2009-09-02

    申请人： RICOH CO LTD

    发明人： NAKAYAMA SHINYA ,  NAKAJIMA HISASHI ,  YAMADA SAORI ,  AOKI MITSUO ,  SHU HYO ,  KISHIDA HIROYUKI

    IPC分类号： G03G9/087 ,  G03G9/08

    CPC分类号： G03G9/08755 ,  G03G9/081 ,  G03G9/08793 ,  G03G9/08795 ,  G03G9/08797

    摘要： A toner containing at least a binder resin, releasing agent, and colorant, wherein the binder resin contains polyester resin (A), polyester resin (B), and polyester resin (C), which is prepared by condensation-polymerizing (i) an alcohol component containing an alkylene oxide adduct of bisphenol compound and (ii) a carboxylic acid component; at least one of the polyester resin (A) and polyester resin (B) is a polyester resin prepared by condensation-polymerizing (i) the alcohol component substantially composed of only aliphatic alcohol and containing 1,2-propanediol in an amount of 65 mole % or more of a divalent alcohol component and (ii) the carboxylic acid component; and a softening point Tm(A) of the polyester resin (A) is 10 C or more higher than Tm(B) of the polyester resin (B), and the absolute difference between Tm(C) of the polyester resin (C) and the Tm(B) is 5° C. or less.

    摘要翻译： 含有至少粘合剂树脂，脱模剂和着色剂的调色剂，其中粘合剂树脂含有聚酯树脂（A），聚酯树脂（B）和聚酯树脂（C），其通过将（i） 含有双酚化合物的烯化氧加成物的醇成分和（ii）羧酸成分; 聚酯树脂（A）和聚酯树脂（B）中的至少一种是通过将（i）基本上仅由脂肪醇组成并含有65摩尔量的1,2-丙二醇的醇组分进行缩聚而制备的聚酯树脂 ％以上的二价醇成分和（ii）羧酸成分; 聚酯树脂（A）的软化点Tm（A）比聚酯树脂（B）的Tm（B）高10℃以上，聚酯树脂（C）的Tm（℃） Tm（B）为5℃以下。

    DEVELOPING DEVICE AND IMAGE FORMING APPARATUS
    5.
    发明公开
    DEVELOPING DEVICE AND IMAGE FORMING APPARATUS 审中-公开
    ENTWICKLUNGSVORRICHUNG UND BILDERZEUNGUNGINRICHUNGUNG

    公开(公告)号：EP3195063A4

    公开(公告)日：2017-09-20

    申请号：EP15842282

    申请日：2015-08-31

    申请人： RICOH CO LTD

    发明人： IWATSUKI HITOSHI ,  SAKATA KOICHI ,  TOHMATSU HIROSHI ,  TANO TOYOAKI ,  MASHIKO KENICHI ,  TAKII MARIKO ,  KISHIDA HIROYUKI ,  MURASAWA YOSHIHIRO ,  KONDOH KEINOSUKE ,  KOIKE TOSHIO ,  TAKAHASHI YUTAKA

    IPC分类号： G03G15/09 ,  G03G9/10 ,  G03G9/113 ,  G03G15/06 ,  G03G15/08

    CPC分类号： G03G15/0928 ,  G03G9/1136 ,  G03G9/1139 ,  G03G15/065 ,  G03G15/0907

    摘要： A developing device, including: a developer containing toner and carrier; and developer bearer configured to have surface thereof bear the developer and endlessly move, and to develop latent image over surface of latent image bearer by supplying toner in developer to latent image in developing region facing the latent image bearer, wherein carrier contains fine particles, value X in volume resistivity R (=10X) (Ω·cm) of carrier is 11.5-16.0, developer bearer includes: magnetic field generating unit including a plurality of magnetic poles; and developing sleeve having a cylindrical shape enclosing magnetic field generating unit, and configured to bear developer over outer circumferential surface of cylindrical shape by magnetic force of the magnetic field generating unit and perform surface moving by rotating relative to developing device body, and developing device includes developing sleeve voltage applying unit configured to apply AC component-containing voltage to developing sleeve.

    摘要翻译： 一种显影装置，包括：含有调色剂和载体的显影剂; 以及显影剂承载体，其构造为使其表面承载显影剂并且无限移动，并且通过将显影剂中的调色剂供给到面向潜像承载体的显影区域中的潜像而在潜像承载体的表面上显影潜像，其中载体包含微粒， 载体的体积电阻率R（= 10X）（Ω·cm）中的X为11.5-16.0，显影剂载体包括：包括多个磁极的磁场产生单元; 以及显影套筒，其具有包围磁场产生单元的圆筒形状，并且被配置为通过所述磁场产生单元的磁力将显影剂承载在圆筒形状的外周面上，并且通过相对于显影装置本体旋转来执行表面移动，并且显影装置包括 显影套筒电压施加单元，其被配置为向显影套筒施加包含AC分量的电压。