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公开(公告)号：US10295919B2
公开(公告)日：2019-05-21
申请号：US15846568
申请日：2017-12-19
申请人： Keiji Makabe , Tsuneyasu Nagatomo , Kohsuke Satoh , Kenji Yoneda
发明人： Keiji Makabe , Tsuneyasu Nagatomo , Kohsuke Satoh , Kenji Yoneda
摘要： A toner is provided. The toner includes toner particles each including a mother particle and external additive particles covering the mother particle. In a SEM image of the toner, toner particles having a ratio Sd/St of from 5% to 50% are present at a frequency of 15% or more, where Sd representing an area of a largest recessed portion D of each toner particle and St representing whole area of the toner particle, Sd and St determined from the SEM image magnified and binarized to discriminate recessed portions and projected portions of the toner particle from each other. An external additive coverage rate Ca at the largest recessed portion D is from 30% to 100%.
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公开(公告)号：US20180181014A1
公开(公告)日：2018-06-28
申请号：US15846568
申请日：2017-12-19
申请人： Keiji MAKABE , Tsuneyasu NAGATOMO , Kohsuke SATOH , Kenji YONEDA
发明人： Keiji MAKABE , Tsuneyasu NAGATOMO , Kohsuke SATOH , Kenji YONEDA
CPC分类号： G03G9/0825 , G03G9/0819 , G03G9/0827 , G03G9/08711 , G03G9/08755 , G03G9/0904 , G03G9/097 , G03G9/09716 , G03G9/09725 , G03G15/0865
摘要： A toner is provided. The toner includes toner particles each including a mother particle and external additive particles covering the mother particle. In a SEM image of the toner, toner particles having a ratio Sd/St of from 5% to 50% are present at a frequency of 15% or more, where Sd representing an area of a largest recessed portion D of each toner particle and St representing whole area of the toner particle, Sd and St determined from the SEM image magnified and binarized to discriminate recessed portions and projected portions of the toner particle from each other. An external additive coverage rate Ca at the largest recessed portion D is from 30% to 100%.
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公开(公告)号：US09851649B2
公开(公告)日：2017-12-26
申请号：US14891032
申请日：2013-11-27
申请人： Keiji Makabe , Tsuyoshi Sugimoto , Akinori Saito , Suzuka Amemori , Toyoshi Sawada , Hiroshi Yamashita , Shinya Nakayama , Atsushi Yamamoto , Daisuke Asahina , Satoyuki Sekiguchi
发明人： Keiji Makabe , Tsuyoshi Sugimoto , Akinori Saito , Suzuka Amemori , Toyoshi Sawada , Hiroshi Yamashita , Shinya Nakayama , Atsushi Yamamoto , Daisuke Asahina , Satoyuki Sekiguchi
CPC分类号： G03G9/08788 , G03G9/08755 , G03G9/08791 , G03G9/08793 , G03G9/08795 , G03G9/08797 , G03G15/0126
摘要： A toner includes a binder resin including a copolymer resin containing structural units derived from crystalline and non-crystalline resins, respectively. Spin-spin relaxation time (t50) of the toner at 50° C. measured by pulse NMR is ≦0.05 msec., spin-spin relaxation time (t130) at 130° C. when warmed from 50° C. to 130° C. is >15 msec., and spin-spin relaxation time (t′70) at 70° C. when cooled from 130° C. to 70° C. is ≦1.00 msec. A binarized image obtained by binarizing a phase image of the toner observed by a tapping mode AFM based on intermediate value between maximum and minimum phase difference values in the phase image includes first phase difference images constituted by large phase-difference portions and a second phase difference image constituted by a small phase-difference portion. The first phase difference images are dispersed in the second phase difference image. The dispersion diameter of the first phase difference images is 150 nm or less.
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4.发明授权公开(公告)号：US08859179B2
公开(公告)日：2014-10-14
申请号：US13679057
申请日：2012-11-16
申请人： Hideyuki Santo , Masahide Yamada , Kazumi Suzuki , Shinya Nakayama , Atsushi Yamamoto , Tatsuya Morita , Shingo Sakashita , Yukiko Nakajima , Keiji Makabe , Daiki Yamashita
发明人： Hideyuki Santo , Masahide Yamada , Kazumi Suzuki , Shinya Nakayama , Atsushi Yamamoto , Tatsuya Morita , Shingo Sakashita , Yukiko Nakajima , Keiji Makabe , Daiki Yamashita
CPC分类号： G03G9/0832 , G03G9/08797 , G03G9/107 , G03G9/1131
摘要： A developer, including a toner including a binder resin comprising a crystalline resin; and a colorant, and a resin carrier comprising a resin; a magnetic particulate material having a magnetic anisotropy, dispersed in the resin, and having a saturated magnetization of from 16 to 30 emu/g, a coercive force of from 15 to 40 kA/m and an average particle diameter not less than 15 μm and less than 100 μm.
摘要翻译： 一种显影剂，包括包含结晶树脂的粘合剂树脂的调色剂; 和着色剂，以及包含树脂的树脂载体; 具有磁各向异性的磁性颗粒材料，分散在树脂中，并且具有16至30emu / g的饱和磁化强度，15至40kA / m的矫顽力和不小于15μm的平均粒径， 小于100μm。
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5.发明申请公开(公告)号：US20140051019A1
公开(公告)日：2014-02-20
申请号：US13958745
申请日：2013-08-05
申请人： Satoyuki Sekiguchi , Hiroshi Yamashita , Minoru Masuda , Susumu Chiba , Tatsuya Morita , Atsushi Yamamoto , Shinya Nakayama , Masahide Yamada , Kohsuke Nagata , Keiji Makabe , Toyoshi Sawada
发明人： Satoyuki Sekiguchi , Hiroshi Yamashita , Minoru Masuda , Susumu Chiba , Tatsuya Morita , Atsushi Yamamoto , Shinya Nakayama , Masahide Yamada , Kohsuke Nagata , Keiji Makabe , Toyoshi Sawada
CPC分类号： G03G9/08764 , G03G9/0804 , G03G9/08755 , G03G9/08795 , G03G9/08797
摘要： Toner contains a binder resin containing a crystalline resin having a urethane and/or urea bonding; and a colorant, wherein in a diffraction spectrum of the toner as measured by an X-ray diffraction instrument, a ratio {C/(C+A)} of an integral intensity C of the spectrum derived from the crystalline structure to an integral intensity A of the spectrum derived from the non-crystalline structure is 0.12 or greater, wherein the toner satisfies the following relation 1: T1−T2≦30° C. (Relation 1), where T1 represents the maximum endothermic peak in the first temperature rising from 0° C. to 100° C. at the temperature rising rate of 10° C./min and T2 represents the maximum exothermic peak in the first temperature falling from 100° C. to 0° C. at the temperature falling rate of 10° C./min as T1 and T2 are measured by diffraction scanning calorimetry (DSC).
摘要翻译： 调色剂含有含有具有氨基甲酸酯和/或脲键合的结晶性树脂的粘合剂树脂; 和着色剂，其中在通过X射线衍射仪测量的调色剂的衍射光谱中，从晶体结构衍生的光谱的积分强度C与积分强度之比{C /（C + A）} 衍生自非晶体结构的光谱的A为0.12或更大，其中调色剂满足以下关系1：T1-T2 @ 30℃（关系1），其中T1表示第一升温中的最大吸热峰 0℃至100℃，升温速率为10℃/分钟，T2表示在100℃至0℃的第一温度下的最大放热峰，温度下降速率为 10℃/ min，通过衍射扫描量热法（DSC）测量T1和T2。
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公开(公告)号：US20110305987A1
公开(公告)日：2011-12-15
申请号：US13112035
申请日：2011-05-20
IPC分类号： G03G9/087
CPC分类号： G03G9/0819 , G03G9/0806 , G03G9/08786 , G03G9/08795
摘要： A method for producing toner particles by ejecting a liquid from at least one ejection hole to form the liquid into liquid droplets, and solidifying the liquid droplets to produce toner particles. The ejecting is accomplished by applying a vibration to the liquid in a liquid column resonance-generating liquid chamber in which an ejection hole is formed to form a standing wave through liquid column resonance, and ejecting the liquid from the ejection hole which is formed in a region corresponding to an antinode of the standing wave to thereby form the liquid into the liquid droplets. Toner produced by the method.
摘要翻译： 一种通过从至少一个喷射孔喷射液体以将液体形成液滴并使液滴固化以产生调色剂颗粒来生产调色剂颗粒的方法。 喷射是通过在液柱共振产生液室中对液体施加振动而实现的，其中形成喷射孔以通过液柱共振形成驻波，并且从形成在喷射孔中的喷射孔喷出液体 区域对应于驻波的波腹，从而将液体形成液滴。 通过该方法生产的调色剂。
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7.发明公开公开(公告)号：US20240310746A1
公开(公告)日：2024-09-19
申请号：US18605957
申请日：2024-03-15
CPC分类号： G03G9/08755 , G03G9/0819 , G03G9/08782 , G03G9/09 , G03G15/08
摘要： Toner may comprise toner particles that comprise a binder resin; the toner particles have a volume average particle diameter from 4.0 μm to 6.0 μm, and the toner has a number content of coarse particle of 20 μm or more from 10 to 250 in 10 mg of the toner.
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公开(公告)号：US11079700B2
公开(公告)日：2021-08-03
申请号：US16811483
申请日：2020-03-06
申请人： Keiji Makabe , Tsuneyasu Nagatomo , Kohsuke Satoh , Daichi Hisakuni , Kousuke Suzuki , Shintaro Akiyama
发明人： Keiji Makabe , Tsuneyasu Nagatomo , Kohsuke Satoh , Daichi Hisakuni , Kousuke Suzuki , Shintaro Akiyama
摘要： An image forming apparatus is provided that includes: an image bearer; a charger; an irradiator; a developing device containing a toner; and a transfer device. The image bearer has a Martens hardness of from 185 to 250 N/m2. The toner satisfies a relation 0.13≤X/Dn≤0.16, where X [μm] represents an average value of an amount of deformation of the toner by micro-indentation at when a load reaches 3.00×10−4 N at a loading rate of 3.0×10−5 N/sec under an environment of 32 degrees C. and 40% RH, and Dn [μm] represents a number average particle diameter of the toner. The toner contains an external additive comprising silica particles and particles composed mainly of strontium titanate. The particles composed mainly of strontium titanate further contain a third element M selected from the group consisting of La, Mg, Ca, Sn, and Si.
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公开(公告)号：US11054757B2
公开(公告)日：2021-07-06
申请号：US16583861
申请日：2019-09-26
摘要： A toner including toner base particles each including a binder resin and a colorant, and external additive, wherein the toner satisfies conditions (a), (b), and (c) below: (a) storage elastic modulus G′(50) of the toner at 50° C. and storage elastic modulus G′(90) of the toner at 90° C. satisfy Formula (1); G′(50)/G′(90)≥6.0×102 Formula (1) (b) a BET specific surface area Bt(m2/g) of the toner and a coverage Ct (%) of the toner base particles covered with the external additive satisfy Formula (2); and Bt−0.03×Ct≤1.60 Formula (2) (c) the external additive includes at least cohered particles, the cohered particles are non-spherical secondary particles each formed through cohesion of primary particles, and a number average secondary particle diameter of the cohered particles is 130 nm or greater.
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公开(公告)号：US20160334722A1
公开(公告)日：2016-11-17
申请号：US15134575
申请日：2016-04-21
申请人： Keiji MAKABE , Tsuneyasu Nagatomo , Kohsuke Satoh , Junichi Watanabe , Kenji Yoneda , Daichi Hisakuni
发明人： Keiji MAKABE , Tsuneyasu Nagatomo , Kohsuke Satoh , Junichi Watanabe , Kenji Yoneda , Daichi Hisakuni
IPC分类号： G03G9/00
CPC分类号： G03G9/0821 , G03G9/0819 , G03G9/0827 , G03G9/08755 , G03G9/08764 , G03G15/08 , G03G21/18
摘要： A toner includes a base particle; and an external additive covering the base particle. The toner includes a tetrahydrofuran (THF)-insoluble component having a glass transition temperature determined from a DSC curve when heated for the second time of from −50° C. to 10° C. and an average circularity not greater than 0.98, and satisfies the following relation: Bt−0.025×Ct≦1.80 wherein Bt represents a BET specific surface area [m2/g]; and Ct represents a coverage [%] of the external additive covering the base particle.
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