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公开(公告)号：EP3213151B1
公开(公告)日：2018-08-15
申请号：EP15854104.5
申请日：2015-09-29
申请人： Ricoh Company, Ltd.
发明人： MURASAWA, Yoshihiro , TOHMATSU, Hiroshi , IWATSUKI, Hitoshi , TAKII, Mariko , SAKATA, Koichi , KISHIDA, Hiroyuki , TANO, Toyoaki , MASHIKO, Kenichi
CPC分类号： G03G9/1075 , G03G9/08755 , G03G9/08795 , G03G9/08797 , G03G9/0902 , G03G9/113 , G03G9/1131 , G03G9/1139
摘要： Provided is an electrostatic latent image developing white toner, including: a white toner including at least a binder resin, a white pigment, and a release agent; and a magnetic carrier including at least a core material, and a coating layer coating the core material and made of a coating resin and conductive particles, wherein Ra of the magnetic carrier is in a range of from 0.50 μm to 1.00 μm, and a bulk density of the magnetic carrier is in a range of from 2.08 g/cm3 to 2.24 g/cm3.
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公开(公告)号：EP3195063B1
公开(公告)日：2019-05-01
申请号：EP15842282.4
申请日：2015-08-31
申请人： Ricoh Company, Ltd.
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3.发明公开ELECTROSTATIC LATENT IMAGE DEVELOPING WHITE DEVELOPER, IMAGE FORMING METHOD, IMAGE FORMING APPARATUS, AND PROCESS CARTRIDGE 审中-公开静电图像显影白显影剂，图像形成方法，图像形成装置和处理盒
公开(公告)号：EP3213151A1
公开(公告)日：2017-09-06
申请号：EP15854104.5
申请日：2015-09-29
申请人： Ricoh Company, Ltd.
发明人： MURASAWA, Yoshihiro , TOHMATSU, Hiroshi , IWATSUKI, Hitoshi , TAKII, Mariko , SAKATA, Koichi , KISHIDA, Hiroyuki , TANO, Toyoaki , MASHIKO, Kenichi
CPC分类号： G03G9/1075 , G03G9/08755 , G03G9/08795 , G03G9/08797 , G03G9/0902 , G03G9/113 , G03G9/1131 , G03G9/1139
摘要： Provided is an electrostatic latent image developing white toner, including: a white toner including at least a binder resin, a white pigment, and a release agent; and a magnetic carrier including at least a core material, and a coating layer coating the core material and made of a coating resin and conductive particles, wherein Ra of the magnetic carrier is in a range of from 0.50 μm to 1.00 μm, and a bulk density of the magnetic carrier is in a range of from 2.08 g/cm3 to 2.24 g/cm3.
摘要翻译： 提供了一种静电潜像显影白色调色剂，其包括：白色调色剂，其至少包含粘合剂树脂，白色颜料和脱模剂; 以及磁性载体，其至少包括芯材和覆盖所述芯材并由涂覆树脂和导电颗粒构成的涂层，其中所述磁性载体的Ra在0.50μm至1.00μm的范围内， 磁性载体的密度在2.08g / cm 3至2.24g / cm 3的范围内。
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公开(公告)号：EP3195063A1
公开(公告)日：2017-07-26
申请号：EP15842282.4
申请日：2015-08-31
申请人： Ricoh Company, 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
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。
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公开(公告)号：EP3465350A1
公开(公告)日：2019-04-10
申请号：EP17729563.1
申请日：2017-05-26
申请人： Ricoh Company, Ltd.
发明人： MURATA, Haruki , KISHIDA, Hiroyuki , TANO, Toyoaki , MASHIKO, Kenichi , TAIKOJI, Masato , TAKII, Mariko , MURASAWA, Yoshihiro
IPC分类号： G03G9/113
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6.发明公开CARRIER, TWO-COMPONENT DEVELOPER, SUPPLEMENTAL DEVELOPER, IMAGE FORMING METHOD, PROCESS CARTRIDGE AND IMAGE FORMING APPARATUS 审中-公开载体，双组分显影剂，特殊开发，图像生成法，处理盒及摄像装置
公开(公告)号：EP2867731A1
公开(公告)日：2015-05-06
申请号：EP13810608.3
申请日：2013-06-26
申请人： Ricoh Company, Ltd.
发明人： KISHIDA, Hiroyuki , YAGUCHI, Shigenori , TOHMATSU, Hiroshi , SAKATA, Koichi , IWATSUKI, Hitoshi , TANO, Toyoaki
CPC分类号： G03G9/0839 , G03G9/1075 , G03G9/1139 , G03G21/18 , H01F1/01
摘要： There is provided a carrier including magnetic core particles; and a coating layer on a surface of each of the magnetic core particles, wherein the coating layer contains electroconductive particles; wherein the electroconductive particles are electroconductive particles in which white inorganic pigments are coated with phosphorus-doped tin or tungsten-doped tin; and wherein a dope ratio of phosphorus or tungsten to tin in the phosphorus-doped tin or tungsten-doped tin is 0.010 to 0.100.
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