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公开(公告)号：US10197948B2
公开(公告)日：2019-02-05
申请号：US15511291
申请日：2015-08-31
申请人： Hitoshi Iwatsuki , Koichi Sakata , Hiroshi Tohmatsu , Toyoaki Tano , Kenichi Mashiko , Mariko Takii , Hiroyuki Kishida , Yoshihiro Murasawa , Keinosuke Kondoh , Toshio Koike , Yutaka Takahashi
发明人： Hitoshi Iwatsuki , Koichi Sakata , Hiroshi Tohmatsu , Toyoaki Tano , Kenichi Mashiko , Mariko Takii , Hiroyuki Kishida , Yoshihiro Murasawa , Keinosuke Kondoh , Toshio Koike , Yutaka Takahashi
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.
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公开(公告)号：US10067438B2
公开(公告)日：2018-09-04
申请号：US15522306
申请日：2015-09-29
申请人： Yoshihiro Murasawa , Hiroshi Tohmatsu , Hitoshi Iwatsuki , Mariko Takii , Koichi Sakata , Hiroyuki Kishida , Toyoaki Tano , Kenichi Mashiko
发明人： Yoshihiro Murasawa , Hiroshi Tohmatsu , Hitoshi Iwatsuki , Mariko Takii , Koichi Sakata , Hiroyuki Kishida , Toyoaki Tano , Kenichi Mashiko
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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3.发明授权Carrier for two-component developer, two-component developer using the carrier, and process cartridge and image forming method and apparatus using the two component developer 有权用于双组分显影剂的载体，使用载体的双组分显影剂，以及处理盒和使用双组分显影剂的成像方法和装置公开(公告)号：US09229347B2
公开(公告)日：2016-01-05
申请号：US14107522
申请日：2013-12-16
申请人： Hiroyuki Kishida , Shigenori Yaguchi , Hiroshi Tohmatsu , Koichi Sakata , Hitoshi Iwatsuki , Toyoaki Tano , Kenichi Mashiko
发明人： Hiroyuki Kishida , Shigenori Yaguchi , Hiroshi Tohmatsu , Koichi Sakata , Hitoshi Iwatsuki , Toyoaki Tano , Kenichi Mashiko
CPC分类号： G03G13/08 , G03G9/1131 , G03G9/1136 , G03G9/1139 , G03G15/0818
摘要： A carrier for use in a two-component developer for developing an electrostatic latent image is provided. The carrier includes a particulate magnetic core; and a cover layer located on a surface of the particulate magnetic core and including a resin and a particulate electroconductive material. The carrier has a BET specific surface area of from 0.8 to 1.6 m2/g.
摘要翻译： 提供了用于显影静电潜像的双组分显影剂中的载体。 载体包括颗粒状磁芯; 以及位于所述颗粒状磁芯的表面上并且包括树脂和颗粒状导电材料的覆盖层。 载体的BET比表面积为0.8〜1.6m 2 / g。
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4.发明申请CARRIER FOR TWO-COMPONENT DEVELOPER, TWO-COMPONENT DEVELOPER USING THE CARRIER, AND IMAGE FORMING METHOD AND PROCESS CARTRIDGE USING THE TWO-COMPONENT DEVELOPER 有权两组件开发商的承运人，使用承运人的两个组件开发商，以及使用两个组件开发商的图像形成方法和过程库公开(公告)号：US20140248557A1
公开(公告)日：2014-09-04
申请号：US14167468
申请日：2014-01-29
申请人： Shigenori Yaguchi , Koichi Sakata , Hitoshi Iwatsuki , Toyoaki Tano , Hiroyuki Kishida , Kenichi Mashiko , Hiroshi Tohmatsu
发明人： Shigenori Yaguchi , Koichi Sakata , Hitoshi Iwatsuki , Toyoaki Tano , Hiroyuki Kishida , Kenichi Mashiko , Hiroshi Tohmatsu
CPC分类号： G03G9/1075 , G03G9/107 , G03G9/1131 , G03G9/1135 , G03G9/1139 , G03G15/09 , G03G21/1803
摘要： A carrier is provided. The carrier includes a particulate magnetic core, and a cover layer located on the surface of the particulate magnetic core and including a resin and a filler. When determined from observation of cross-section of the carrier, the shape factor SF2 of the carrier is from 120 to 160, the ratio of the average domain diameter of the particulate magnetic core to the number average particle diameter of the filler is from 1:1 to 1:0.003, and the area ratio of the filler in the cover layer is from 30 to 85%.
摘要翻译： 提供载体。 载体包括颗粒状磁芯和位于颗粒状磁芯的表面上并包括树脂和填料的覆盖层。 当从载体的横截面观察确定时，载体的形状因子SF2为120〜160，颗粒状磁心的平均畴直径与填料的数均粒径的比为1： 1〜1：0.003，覆盖层中填料的面积比为30〜85％。
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5.发明授权Carrier for two-component developer, two-component developer using the carrier, and image forming method and process cartridge using the two-component developer 有权用于双组分显影剂的载体，使用载体的双组分显影剂，以及使用双组分显影剂的成像方法和处理盒公开(公告)号：US09298119B2
公开(公告)日：2016-03-29
申请号：US14167468
申请日：2014-01-29
申请人： Shigenori Yaguchi , Koichi Sakata , Hitoshi Iwatsuki , Toyoaki Tano , Hiroyuki Kishida , Kenichi Mashiko , Hiroshi Tohmatsu
发明人： Shigenori Yaguchi , Koichi Sakata , Hitoshi Iwatsuki , Toyoaki Tano , Hiroyuki Kishida , Kenichi Mashiko , Hiroshi Tohmatsu
CPC分类号： G03G9/1075 , G03G9/107 , G03G9/1131 , G03G9/1135 , G03G9/1139 , G03G15/09 , G03G21/1803
摘要： A carrier is provided. The carrier includes a particulate magnetic core, and a cover layer located on the surface of the particulate magnetic core and including a resin and a filler. When determined from observation of cross-section of the carrier, the shape factor SF2 of the carrier is from 120 to 160, the ratio of the average domain diameter of the particulate magnetic core to the number average particle diameter of the filler is from 1:1 to 1:0.003, and the area ratio of the filler in the cover layer is from 30 to 85%.
摘要翻译： 提供载体。 载体包括颗粒状磁芯和位于颗粒状磁芯的表面上并包括树脂和填料的覆盖层。 当从载体的横截面观察确定时，载体的形状因子SF2为120〜160，颗粒状磁心的平均畴直径与填料的数均粒径的比为1： 1〜1：0.003，覆盖层中填料的面积比为30〜85％。
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6.发明申请CARRIER FOR TWO-COMPONENT DEVELOPER, TWO-COMPONENT DEVELOPER USING THE CARRIER, AND PROCESS CARTRIDGE AND IMAGE FORMING METHOD AND APPARATUS USING THE TWO COMPONENT DEVELOPER 有权两组件开发商的承运人，使用承运人的两个组件开发商，以及使用两个组件开发商的过程库和图像形成方法和装置公开(公告)号：US20140227638A1
公开(公告)日：2014-08-14
申请号：US14107522
申请日：2013-12-16
申请人： Hiroyuki KISHIDA , Shigenori Yaguchi , Hiroshi Tohmatsu , Koichi Sakata , Hitoshi Iwatsuki , Toyoaki Tano , Kenichi Mashiko
发明人： Hiroyuki KISHIDA , Shigenori Yaguchi , Hiroshi Tohmatsu , Koichi Sakata , Hitoshi Iwatsuki , Toyoaki Tano , Kenichi Mashiko
CPC分类号： G03G13/08 , G03G9/1131 , G03G9/1136 , G03G9/1139 , G03G15/0818
摘要： A carrier for use in a two-component developer for developing an electrostatic latent image is provided. The carrier includes a particulate magnetic core; and a cover layer located on a surface of the particulate magnetic core and including a resin and a particulate electroconductive material. The carrier has a BET specific surface area of from 0.8 to 1.6 m2/g.
摘要翻译： 提供了用于显影静电潜像的双组分显影剂中的载体。 载体包括颗粒状磁芯; 以及位于所述颗粒状磁芯的表面上并且包括树脂和颗粒状导电材料的覆盖层。 载体的BET比表面积为0.8〜1.6m 2 / g。
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公开(公告)号：US10915035B2
公开(公告)日：2021-02-09
申请号：US16305196
申请日：2017-05-26
申请人： Haruki Murata , Hiroyuki Kishida , Toyoaki Tano , Kenichi Mashiko , Masato Taikoji , Mariko Takii , Yoshihiro Murasawa
发明人： Haruki Murata , Hiroyuki Kishida , Toyoaki Tano , Kenichi Mashiko , Masato Taikoji , Mariko Takii , Yoshihiro Murasawa
摘要： A carrier for developing an electrostatic latent image includes a core material particle and a resin layer covering a surface of the core material particle. The resin layer includes a resin and at least one kind of a fine particle. At least one kind of the fine particles includes a chargeable fine particle. The chargeable fine particle has a long diameter of 400 to 900 nm. The chargeable fine particle has a shape factor SF-1 of 160 to 250.
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公开(公告)号：US09989874B2
公开(公告)日：2018-06-05
申请号：US15449572
申请日：2017-03-03
申请人： Yoshihiro Murasawa , Toyoaki Tano , Hiroyuki Kishida , Masato Taikoji , Kenichi Mashiko , Mariko Takii , Haruki Murata
发明人： Yoshihiro Murasawa , Toyoaki Tano , Hiroyuki Kishida , Masato Taikoji , Kenichi Mashiko , Mariko Takii , Haruki Murata
CPC分类号： G03G9/1075 , G03G9/0819 , G03G9/08755 , G03G9/091 , G03G9/0926 , G03G9/107 , G03G9/1131 , G03G9/1133 , G03G9/1136 , G03G9/1139 , G03G15/08 , G03G2215/0607
摘要： A carrier for developing electrostatic latent images is provided. The carrier includes a magnetic core particle and a resin layer coating a surface of the magnetic core particle. The resin layer includes a particulate material A having a volume average particle diameter (a) and a particulate material B having a volume average particle diameter (b). The volume average particle diameter (a) of the particulate material A is the largest among volume average particle diameters of all particulate materials included in the resin layer, and an inequation 100≥(a)/(b)≥5 is satisfied. The particulate material A is barium sulfate.
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9.发明授权公开(公告)号：US10234783B2
公开(公告)日：2019-03-19
申请号：US15568947
申请日：2016-04-28
申请人： Koichi Sakata , Tohru Suganuma , Shohichi Sugimoto , Hiroshi Tohmatsu , Hiroyuki Kishida , Kenichi Mashiko , Toyoaki Tano
发明人： Koichi Sakata , Tohru Suganuma , Shohichi Sugimoto , Hiroshi Tohmatsu , Hiroyuki Kishida , Kenichi Mashiko , Toyoaki Tano
IPC分类号： G03G9/113
摘要： A carrier including a resin layer including at least one kind of particles, wherein the at least one kind of the particles are particles of barium sulfate, wherein an amount of Ba detected is 0.3 atomic % or greater in a Ba analysis through X-ray photoelectron spectroscopy (XPS) of the carrier, and wherein circle-equivalent diameters of the particles of the barium sulfate are 400 nm or greater but 900 nm or smaller.
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公开(公告)号：US10054868B2
公开(公告)日：2018-08-21
申请号：US15331118
申请日：2016-10-21
CPC分类号： G03G9/10 , G03G9/1139 , G03G15/08
摘要： A carrier includes a core and a covering layer covering the core and including at least carbon black and a filler. The maximum height Ry of the surface of the carrier is from 4.0 μm to 5.0 μm.
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