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1. 发明申请

US20210063903A1 TONER AND METHOD OF PRODUCING TONER 有权
公开(公告)号：US20210063903A1
公开(公告)日：2021-03-04
申请号：US17002879
申请日：2020-08-26
申请人： CANON KABUSHIKI KAISHA
发明人： Takaho Shibata , Yuichi Mizo , Koh Ishigami , Takakuni Kobori , Masaharu Miura , Takeshi Ohtsu , Yosuke Iwasaki , Daisuke Yamashita , Ryo Nakajima , Wakiko Katsumata , Hitoshi Sano , Kenta Mitsuiki , Rei Hijikawa
IPC分类号： G03G9/087 , G03G9/08
摘要： A toner containing a toner particle that contains a binder resin including a polyester resin, and a polyolefin resin having —COOM that is a neutralized carboxy group with a monovalent metal ion M, wherein the polyolefin resin having —COOM is a polymer in which a vinyl polymer is bonded to a polyolefin, a content of a monomer unit containing —COOM in the polyolefin resin having —COOM is 1 to 20 mass %, and in a FT-IR spectrum obtained through measurement of a large particle size-side particle group and a small particle size-side particle group obtained by dividing the toner into two substantially equal parts, on a number basis, a ratio of the intensity of a maximum absorption peak in a range from 1545 cm−1 to 1555 cm−1 with respect to the intensity of a maximum absorption peak in a range from 1713 cm−1 to 1723 cm−1 exhibits a specific relationship.

2. 发明授权

US10775710B1 Toner 有权
公开(公告)号：US10775710B1
公开(公告)日：2020-09-15
申请号：US16534343
申请日：2019-08-07
申请人： CANON KABUSHIKI KAISHA
发明人： Kentaro Kamae , Ryuji Murayama , Junichi Tamura , Masaharu Miura , Hayato Ida , Takaho Shibata , Koh Ishigami , Yuichi Mizo
IPC分类号： G03G9/08 , G03G9/097
摘要： A toner includes a toner particle containing a binder resin and a silica fine particle A on a surface of the toner particle, wherein D50 on a number basis of the toner is 3.0 to 6.0 the silica fine particle A is a particle having a particle diameter of 80 to 500 nm, the particle diameter being confirmable by observing the toner with a SEM, and when the average coverage with the silica fine particle A determined by image analysis of a particle group of a small particle diameter side of the toner with a SEM is set to Ss and the average coverage with the silica fine particle A determined by image analysis of a particle group of a large particle diameter side of the toner with a scanning electron microscope is set to S1, Ss is 20 to 70 area %, Ss and S1 satisfy S1/Ss≤0.80.

3. 发明申请

US20190171123A1 MAGENTA TONER AND TONER KIT 审中-公开
公开(公告)号：US20190171123A1
公开(公告)日：2019-06-06
申请号：US16203864
申请日：2018-11-29
申请人： CANON KABUSHIKI KAISHA
发明人： Takeshi Ohtsu , Yosuke Iwasaki , Wakiko Katsumata , Koh Ishigami , Masaharu Miura , Kentaro Kamae , Kenta Mitsuiki , Ryuichiro Matsuo , Yuichi Mizo
IPC分类号： G03G9/09 , G03G9/087 , G03G9/08
CPC分类号： G03G9/091 , G03G9/0819 , G03G9/08735 , G03G9/08755 , G03G9/08782 , G03G9/08786 , G03G9/08797
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.

4. 发明授权

US10216108B2 Toner production method and polymer 有权
公开(公告)号：US10216108B2
公开(公告)日：2019-02-26
申请号：US15673672
申请日：2017-08-10
申请人： CANON KABUSHIKI KAISHA
发明人： Yosuke Iwasaki , Takeshi Ohtsu , Kentaro Kamae , Ryuichiro Matsuo , Wakiko Katsumata , Kenta Mitsuiki , Masaharu Miura , Koh Ishigami , Yuichi Mizo
IPC分类号： G03G9/08 , G03G9/087 , C08F255/02 , G03G9/09
摘要： A toner production method including: a melt-kneading step of melt-kneading a resin composition including a binder resin, a colorant, a wax, and a wax dispersant to obtain a melt-kneaded product; and a pulverizing step of pulverizing the melt-kneaded product. Where the temperature of the melt-kneaded product at the end of the melt-kneading step is Tk (° C.), and the softening point of the wax dispersant is Tm (° C.), the relationship of −18≤[Tk−Tm]≤10 is satisfied. The wax dispersant is a polymer in which a styrene acrylic polymer is graft-polymerized to a polyolefin. The styrene acrylic polymer has a monomer unit derived from α-methylstyrene and a monomer unit derived from a cycloalkyl (meth)acrylate.

5. 发明申请

US20170269493A1 TONER AND METHOD FOR MANUFACTURING TONER 审中-公开
公开(公告)号：US20170269493A1
公开(公告)日：2017-09-21
申请号：US15457124
申请日：2017-03-13
申请人： CANON KABUSHIKI KAISHA
发明人： Takeshi Ohtsu , Kentaro Kamae , Ryuichiro Matsuo , Yosuke Iwasaki , Wakiko Katsumata , Kenta Mitsuiki , Masaharu Miura , Koh Ishigami , Yuichi Mizo
IPC分类号： G03G9/087 , G03G9/09 , G03G9/113 , G03G9/08 , G03G9/107
CPC分类号： G03G9/08755 , G03G9/0812 , G03G9/0815 , G03G9/0827 , G03G9/08711 , G03G9/08726 , G03G9/08782 , G03G9/08786 , G03G9/08788 , G03G9/08797 , G03G9/0904 , G03G9/1075 , G03G9/1131 , G03G9/1133
摘要： A toner is provided, which is obtained by heat treating a toner particle containing a crystalline polyester resin, an amorphous polyester resin, a hydrocarbon wax and a wax dispersant, wherein the crystalline polyester resin is a hybrid resin having crystalline polyester segments and amorphous vinyl segments, and a mass ratio of crystalline polyester segments and amorphous vinyl segments in the crystalline polyester resin (crystalline segments/amorphous segments) is 70/30 to 98/2.

6. 发明授权

US08921023B2 Magnetic carrier and two-component developer 有权
标题翻译：磁性载体和双组分显影剂
公开(公告)号：US08921023B2
公开(公告)日：2014-12-30
申请号：US13961593
申请日：2013-08-07
申请人： Canon Kabushiki Kaisha
发明人： Yoshinobu Baba , Koh Ishigami , Masayuki Hama , Kentaro Kamae , Hiroaki Kawakami
IPC分类号： G03G9/113 , G03G9/107
CPC分类号： G03G9/1075 , G03G9/107 , G03G9/1131
摘要： Provided is a magnetic carrier excellent in leakage, uniformity of a solid image having satisfactory charging stability and developing performance at low electric field. The magnetic carrier is a magnetic carrier comprising: a magnetic substance-dispersed resin carrier core, which contains a magnetic substance and a binding resin, and a coating resin on a surface thereof, wherein: the carrier core has resistivity at 1000 V/cm of 5.0×106-8.0×107 Ω·cm, the magnetic substance has a number average particle diameter of 0.20-0.35 μm; and comprises magnetic-substance particles having vertexes and a particle diameter of 0.53 μm or more in an amount of 10.0-32.0 vol % based on a total amount of the magnetic substance; and wherein: the carrier core has Fe2O3 content of 98.00% by mass or more; and ZnO content of 0.06-0.50% by mass.
摘要翻译：本发明提供了一种磁性载体，具有良好的泄漏性，具有令人满意的充电稳定性和低电场显影性能的固体图像的均匀性。磁性载体是一种磁性载体，其包括：含有磁性物质和粘合树脂的磁性物质分散的树脂载体芯和其表面上的涂覆树脂，其中：载体芯的电阻率为1000V / cm 5.0×106-8.0×107＆OHgr·cm，磁性物质的数均粒径为0.20-0.35μm; 并且包含基于磁性物质总量的10.0-32.0体积％的具有顶点和粒径为0.53μm以上的磁性体颗粒; 载体芯的Fe 2 O 3含量为98.00质量％以上; 并且ZnO含量为0.06-0.50质量％。

7. 发明授权

US12099326B2 Toner 有权
公开(公告)号：US12099326B2
公开(公告)日：2024-09-24
申请号：US17210974
申请日：2021-03-24
申请人： CANON KABUSHIKI KAISHA
发明人： Shin Kitamura , Nobuyoshi Sugahara , Daisuke Tsujimoto , Kazunari Ooyama , Yuu Nishimura , Kazuki Murata , Toru Takahashi , Ryo Nakajima , Hitoshi Sano , Koh Ishigami , Takaho Shibata
IPC分类号： G03G9/087 , C08F212/08 , C08G63/16 , C08G63/183
CPC分类号： G03G9/08773 , C08F212/08 , C08G63/16 , C08G63/183 , G03G9/08788
摘要： A toner comprising a toner particle containing a binder resin containing at least 50 mass % of a polyester resin, wherein the polyester resin contains a polyester resin A having a silicone segment, and in XPS analysis, when X is a ratio of the number of silicon atoms attributable to silicone segments relative to a total number of measured atoms, X1 is a value of the X on the toner particle surface, X2 is a value of the X at a depth of 30 nm from the surface, Z is a ratio of the number of carbon atoms attributable to ester bonds relative to a total number of measured atoms, Z1 is a value of the Z on the toner particle surface and Z2 is a value of the Z at a depth of 30 nm from the toner particle surface, X1, Z1, X2 and Z2 satisfy a specific relationship.

8. 发明公开

US20240280920A1 TONER 审中-公开
公开(公告)号：US20240280920A1
公开(公告)日：2024-08-22
申请号：US18617257
申请日：2024-03-26
申请人： CANON KABUSHIKI KAISHA
发明人： Kazunari Ooyama , Yuu Nishimura , Nobuyoshi Sugahara , Hitoshi Sano , Toru Takahashi , Kazuki Murata , Daisuke Tsujimoto , Koh Ishigami , Shin Kitamura , Takaho Shibata , Ryo Nakajima
IPC分类号： G03G9/097 , G03G9/087
CPC分类号： G03G9/09708 , G03G9/08755 , G03G9/09725
摘要： A toner includes toner particles containing a binder resin, a colorant, and inorganic fine particles, in which in a depth profile of an element distribution in a depth region from the outermost surface of a particle to a depth of 500 nm the depth profile being obtained by an element analysis performed by X-ray photoelectron spectroscopy using the toner as a sample, two or more minimum points of a concentration of a carbon element in the depth region exist, a concentration of an inorganic element becomes a maximum value at a depth position corresponding to each of the minimum points, and the inorganic element is an element derived from the inorganic fine particle.

9. 发明授权

US11429032B2 Toner and method of producing toner 有权
公开(公告)号：US11429032B2
公开(公告)日：2022-08-30
申请号：US17002879
申请日：2020-08-26
申请人： CANON KABUSHIKI KAISHA
发明人： Takaho Shibata , Yuichi Mizo , Koh Ishigami , Takakuni Kobori , Masaharu Miura , Takeshi Ohtsu , Yosuke Iwasaki , Daisuke Yamashita , Ryo Nakajima , Wakiko Katsumata , Hitoshi Sano , Kenta Mitsuiki , Rei Hijikawa
IPC分类号： G03G9/087 , G03G9/08
摘要： A toner containing a toner particle that contains a binder resin including a polyester resin, and a polyolefin resin having —COOM that is a neutralized carboxy group with a monovalent metal ion M, wherein the polyolefin resin having —COOM is a polymer in which a vinyl polymer is bonded to a polyolefin, a content of a monomer unit containing —COOM in the polyolefin resin having —COOM is 1 to 20 mass %, and in a FT-IR spectrum obtained through measurement of a large particle size-side particle group and a small particle size-side particle group obtained by dividing the toner into two substantially equal parts, on a number basis, a ratio of the intensity of a maximum absorption peak in a range from 1545 cm−1 to 1555 cm−1 with respect to the intensity of a maximum absorption peak in a range from 1713 cm−1 to 1723 cm−1 exhibits a specific relationship.

10. 发明授权

US10012921B2 Toner 有权
公开(公告)号：US10012921B2
公开(公告)日：2018-07-03
申请号：US15681742
申请日：2017-08-21
申请人： CANON KABUSHIKI KAISHA
发明人： Kentaro Kamae , Ryuichiro Matsuo , Yosuke Iwasaki , Wakiko Katsumata , Kenta Mitsuiki , Takeshi Ohtsu , Masaharu Miura , Koh Ishigami , Yuichi Mizo
IPC分类号： G03G9/087 , G03G9/08 , G03G9/09 , G03G9/097
CPC分类号： G03G9/08755 , G03G9/0821 , G03G9/0827 , G03G9/08711 , G03G9/08786 , G03G9/08795 , G03G9/08797 , G03G9/0904 , G03G9/0918 , G03G9/09733
摘要： A toner having a toner particle containing an amorphous resin, a crystalline resin, a colorant, a release agent, and a polymer in which a styrene-acrylic polymer is graft-polymerized on a polyolefin, wherein the amorphous resin contains an amorphous polyester resin A, and the amorphous polyester resin A has a monomer unit derived from polyhydric alcohol and a monomer unit derived from polyhydric carboxylic acid, has, a particular amount of a succinic acid-derived monomer unit in the monomer unit derived from polyhydric carboxylic acid, and has, a particular amount of a monomer unit derived from a propylene oxide adduct on bisphenol A in the monomer unit derived from polyhydric alcohol; and has a particular softening point, a particular solubility parameter, and a particular peak molecular weight.

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