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公开(公告)号：US11714362B2
公开(公告)日：2023-08-01
申请号：US17117444
申请日：2020-12-10
发明人： Ichiro Kanno , Takeshi Hashimoto , Kentaro Kamae , Hayato Ida
CPC分类号： G03G9/08755 , G03G9/0819 , G03G9/0823 , G03G9/08711 , G03G9/09708 , G03G9/09716 , G03G9/107
摘要： A toner having: a toner particle containing a binder resin including a first resin and a second resin; and an inorganic fine particle on a surface of the toner particle, wherein the first resin has a specific content ratio of a specific monomer unit, acid values of the first unit and second unit are within specific ranges, a domain matrix structure including a matrix containing the first resin and domains containing the second resin appears in cross-sectional observation of the toner, a compound having an alkyl group is present on a surface of the inorganic fine particle, and a volume resistivity of the inorganic fine particle is 1.0×105 Ω·cm to 1.0×1013 Ω·cm.
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公开(公告)号：US11675283B2
公开(公告)日：2023-06-13
申请号：US17092602
申请日：2020-11-09
IPC分类号： G03G9/083 , G03G9/093 , C09D133/08 , C09D183/04 , C09D5/00
CPC分类号： G03G9/0833 , C09D133/08 , C09D183/04 , G03G9/0837 , G03G9/0838 , G03G9/0839 , G03G9/09321 , G03G9/09328 , G03G9/09385 , C09D5/002
摘要： A magnetic carrier including a magnetic carrier particle having a magnetic core particle and a coating layer of an organosilicon polymer on a surface of the magnetic core particle, wherein the organosilicon polymer has the structure given by formula (T3) below; in 29Si-NMR measurement of the THF-insoluble matter of the organosilicon polymer, the ratio ST3 of the peak area for the structure given by formula (T3) to the total peak area for the organosilicon polymer is at least 0.05; and in the roughness curve measured on the magnetic carrier particle, the mean width (RSm) of the roughness curve elements of the magnetic carrier particle, and the ratio (σ/RSm) to this RSm of the standard deviation σ of the width of the region where one period of a protrusion and a recess occurs, are in prescribed ranges.
R—Si(O1/2)3 (T3)
R in the formula represents a prescribed substituent.-
公开(公告)号：US10423090B2
公开(公告)日：2019-09-24
申请号：US16203864
申请日：2018-11-29
发明人： Takeshi Ohtsu , Yosuke Iwasaki , Wakiko Katsumata , Koh Ishigami , Masaharu Miura , Kentaro Kamae , Kenta Mitsuiki , Ryuichiro Matsuo , Yuichi Mizo
摘要： Provided is a magenta toner having a magenta toner particle containing a binder resin, a colorant, a wax, a wax dispersant, and a crystalline polyester, wherein the wax dispersant is a graft polymer in which a styrene acrylic resin is grafted to a hydrocarbon compound, and the styrene acrylic resin has a monomer unit having a saturated alicyclic group, the colorant contains C.I. Pigment Red 32, and when observing a cross-section of the magenta toner particle using a transmission electron microscope (TEM), crystals of the crystalline polyester are dispersed in the cross-section, and the number average value of maximum lengths of the crystals is 50 nm or less.
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公开(公告)号：US09969834B2
公开(公告)日：2018-05-15
申请号：US15244439
申请日：2016-08-23
发明人： Takeshi Ohtsu , Kentaro Kamae , Ryuichiro Matsuo , Yosuke Iwasaki , Wakiko Katsumata , Masaharu Miura , Koh Ishigami , Yuichi Mizo , Kenta Mitsuiki
IPC分类号： G03G9/087 , C08F255/02 , G03G9/08
CPC分类号： C08F255/02 , G03G9/0806 , G03G9/081 , G03G9/0821 , G03G9/08755 , G03G9/08782 , G03G9/08786
摘要： A wax dispersant for a toner including a polymer obtained by graft polymerization of a styrene-acrylic resin onto a hydrocarbon compound, wherein the styrene-acrylic resin has a structural segment derived from a saturated alicyclic compound, and a toner including a toner particle that contains a binder resin, a wax, and a polymer obtained by graft polymerization of a styrene-acrylic resin onto a hydrocarbon compound, wherein the styrene-acrylic resin has a structural segment derived from a saturated alicyclic compound.
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公开(公告)号：US20170242355A1
公开(公告)日：2017-08-24
申请号：US15431821
申请日：2017-02-14
发明人： Koh Ishigami , Takeshi Ohtsu , Kentaro Kamae , Ryuichiro Matsuo , Yosuke Iwasaki , Wakiko Katsumata , Kenta Mitsuiki , Masaharu Miura , Yuichi Mizo
IPC分类号： G03G9/08
CPC分类号： G03G9/0806 , G03G9/08 , G03G9/0802 , G03G9/081 , G03G9/08711 , G03G9/08755 , G03G9/08782 , G03G9/08795 , G03G9/08797
摘要： A toner having a toner particle that is produced through a step of melt-kneading a resin composition containing a binder resin, a colorant, a hydrocarbon wax, and a wax dispersing agent, cooling the obtained kneaded material, pulverizing the obtained cooled material, and heat treating the resulting resin particles, wherein the wax dispersing agent is a polymer provided by graft polymerizing a styrene-acrylic polymer onto a polypropylene, the styrene-acrylic polymer is a polymer having a monomer unit derived from a cycloalkyl (meth)acrylate, and specific relationships are satisfied where Mp(p) is the melting point (° C.) of the polypropylene and Mp(w) is the melting point (° C.) of the hydrocarbon wax.
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公开(公告)号：US09058924B2
公开(公告)日：2015-06-16
申请号：US13902365
申请日：2013-05-24
发明人： Nozomu Komatsu , Kentaro Kamae , Koh Ishigami , Yoshinobu Baba
CPC分类号： H01F1/01 , G03G9/0833 , G03G9/107 , G03G9/1075 , G03G9/1131
摘要： A magnetic carrier having a resin-containing ferrite particles each containing a porous ferrite core and a resin in pores of the porous ferrite core, wherein the porous ferrite core has a particular pore diameter corresponding to the maximum logarithmic differential pore volume in a pore diameter range from at least 0.10 μm to not more than 3.00 μm, the resistivity of the porous ferrite core is in a particular range, and the porous ferrite core contains an oxide of Mg in a particular amount and contains a particular amount of a oxide of at least one metal selected from the group consisting of Mn, Sr, and Ca.
摘要翻译： 一种磁性载体，其具有含有多孔铁氧体磁心的含有树脂的铁氧体颗粒和多孔铁氧体磁芯的孔中的树脂，其中所述多孔铁氧体磁心的特定孔径对应于孔径范围内的最大对数微孔容积 从至少0.10μm至不大于3.00μm，多孔铁氧体磁心的电阻率在特定范围内，多孔铁氧体磁心含有特定量的Mg的氧化物，并且含有特定量的氧化物至少 一种选自Mn，Sr和Ca的金属。
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7.发明授权公开(公告)号：US08974994B2
公开(公告)日：2015-03-10
申请号：US13752129
申请日：2013-01-28
发明人： Kentaro Kamae , Koh Ishigami , Yoshinobu Baba
CPC分类号： G03G9/1075 , G03G9/1133 , G03G9/1139
摘要： Provided is a magnetic carrier satisfactory in terms of the suppression of leakage and solid carrier adhesion, charge-providing performance, and developability. The magnetic carrier is a magnetic carrier, including filled core particles of which pores of porous magnetic core particles are filled with a filling resin composition, and having a surface coated with a coating resin composition, in which the coating resin composition comprises a coating resin and a carbon black, an amount of the coating resin composition is 2.0 parts by mass or more and 5.0 parts by mass or less with respect to 100.0 parts by mass of the filled core particles; and a particle diameter of the carbon black in the coating resin composition Pv at a maximum frequency in a particle size distribution based on a volume of the carbon black is 1.0 μm or more and 10.0 μm or less.
摘要翻译： 提供了在抑制泄漏和固体载体粘附，电荷提供性能和显影性方面令人满意的磁性载体。 磁性载体是磁性载体，包括填充的核心颗粒，其中多孔磁性核颗粒的孔被填充树脂组合物填充，并且具有涂覆有涂料树脂组合物的表面，其中涂料树脂组合物包含涂料树脂和 炭黑，相对于100.0质量份填充的芯颗粒，涂布树脂组合物的量为2.0质量份以上5.0质量份以下。 涂布树脂组合物Pv中的炭黑的粒径为基于炭黑的体积的粒径分布的最大频率为1.0μm以上且10.0μm以下。
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8.发明授权Method of producing magnetic carrier and magnetic carrier that uses this production method 有权使用该制造方法制造磁性载体和磁性载体的方法公开(公告)号：US08927188B2
公开(公告)日：2015-01-06
申请号：US13952252
申请日：2013-07-26
发明人： Takeshi Naka , Masayuki Hama , Kentaro Kamae , Koh Ishigami , Yoshinobu Baba , Hiroaki Kawakami , Yojiro Hotta , Satoshi Mita
CPC分类号： G03G9/1131 , G03G9/1075
摘要： A method of producing a magnetic carrier, having a coating process step in which a surface of a magnetic carrier core is coated with particles of a resin composition by a mechanical impact force. The coating process step has a first coating process step of mixing, dispersing, and fixing the particles on the surface of the core, and a second coating process step, which is performed after the first coating process step, of carrying out a film-forming coating process on the particles. In the first and second coating process steps, the peripheral velocity of the outermost end of stirring members, the coating process time, the product temperature at the end of the coating process, and the glass-transition temperature of the resin component satisfy specific relationships.
摘要翻译： 一种制造磁性载体的方法，具有涂覆工艺步骤，其中磁性载体芯的表面通过机械冲击力涂覆有树脂组合物的颗粒。 涂覆工艺步骤具有将颗粒混合，分散和固定在芯的表面上的第一涂布工艺步骤，以及在第一涂覆工艺步骤之后进行的成膜的第二涂覆工艺步骤 对颗粒进行涂布。 在第一和第二涂布工艺步骤中，搅拌构件的最外端的圆周速度，涂布处理时间，涂布过程结束时的产品温度和树脂组分的玻璃化转变温度满足特定关系。
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公开(公告)号：US20130236830A1
公开(公告)日：2013-09-12
申请号：US13873970
申请日：2013-04-30
发明人： Yoshiaki Shiotari , Kosuke Fukudome , Nozomu Komatsu , Kunihiko Nakamura , Kentaro Kamae , Hiroyuki Fujikawa , Koh Ishigami , Takayuki Itakura , Hironori Minagawa
IPC分类号： G03G9/08
CPC分类号： G03G9/0819 , G03G9/0815 , G03G9/0817 , G03G9/0821 , G03G9/0827
摘要： It is an object of the present invention to provide a toner having the transfer efficiency and the cleanability in combination, exhibiting excellent stress resistance, and ensuring the low-temperature fixing.A toner characterized in that the average circularity of the above-described toner is 0.960 or more, and 0.985 or less, where the average circularity is analyzed by dividing particles having a circle equivalent diameter of 1.98 μm or more, and 200.00 μm or less, the number A of toners having a circularity of 0.990 or more, and 1.000 or less is 25.0 percent by the number or less, and the percentage of the number of particles B having a circle equivalent diameter of 0.50 μm or more, and 1.98 μm or less relative to the total particles of 0.50 μm or more, and 200.00 μm or less is 10.0 percent by the number or less.
摘要翻译： 本发明的目的是提供具有转印效率和可清洁性的组合的显影优异的耐压性和确保低温定影的调色剂。 一种调色剂，其特征在于，上述调色剂的平均圆形度为0.960以上且0.985以下，通过将圆当量直径为1.98μm以上且200.00μm以下的颗粒除以平均圆形度， 圆形度为0.990以上，1.000以下的调色剂的A号为25.0以下，圆当量直径为0.50μm以上的粒子B的数量为1.98μm，或者 相对于0.50μm以上的总颗粒较少，并且200.00μm或更小的数量为10.0％以下。
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公开(公告)号：US11835873B2
公开(公告)日：2023-12-05
申请号：US17116402
申请日：2020-12-09
发明人： Takeshi Hashimoto , Kentaro Kamae , Ichiro Kanno , Hayato Ida
IPC分类号： G03G9/087 , C08G63/183 , C08F220/06 , C08F220/18 , C08F212/10 , C08F220/46 , G03G9/08
CPC分类号： G03G9/08711 , C08F212/10 , C08F220/06 , C08F220/1818 , C08F220/46 , C08G63/183 , G03G9/0819 , G03G9/08755
摘要： A toner has a toner particle containing a binder resin having a first resin and a second resin. The first resin is a crystalline resin, the second resin is an amorphous resin, and the first resin has a first monomer unit, a second monomer unit and a third monomer unit, each having a specific structure. A content of the first monomer unit a content of the third monomer unit in the first resin, and an SP value of the second monomer unit all satisfy a specific ranges, and the second resin contains at least one vinyl-based resin and/or specific hybrid resin, with a cross section of the toner having a domain-matrix structure formed of a matrix including the first resin and domains including the second resin, a number average diameter of the domains being 0.10 to 2.00 μm.
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