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1. 发明授权

US07229727B2 Color toner, and full-color image forming method 有权
标题翻译：彩色调色剂，全彩色成像方法
公开(公告)号：US07229727B2
公开(公告)日：2007-06-12
申请号：US10994344
申请日：2004-11-23
申请人： Takayuki Itakura , Takaaki Kotaki , Takaaki Kaya , Kazuhiko Hayami , Nozomu Komatsu
发明人： Takayuki Itakura , Takaaki Kotaki , Takaaki Kaya , Kazuhiko Hayami , Nozomu Komatsu
IPC分类号： G03G9/09
CPC分类号： G03G9/08711 , G03G9/0821 , G03G9/08755 , G03G9/08786 , G03G9/08788 , G03G9/09 , G03G9/0906 , G03G9/091 , G03G9/0914 , G03G9/0918 , G03G9/0926 , G03G9/09783
摘要： A yellow toner in which, in a spectral-distribution diagram in which the reflectance (%) is plotted as ordinate and the. wavelength (nm) as abscissa, the reflectance determined for a toner in a state of powder ranges from 15% to 20% at a wavelength of 500 nm and ranges from 75% to 80% at a wavelength of 600 nm, a cyan toner in which, in the like spectral-distribution diagram, the reflectance determined for a toner in a state of powder ranges from 30% to 35% at a wavelength of 450 nm and ranges from 35% to 40% at a wavelength of 475 nm, and a magenta toner in which, in the like spectral-distribution diagram, the reflectance determined for a toner in a state of powder ranges from 5% to 10% at a wavelength of 425 nm and ranges from 65% to 70% at a wavelength of 675 nm. These color toners each contain corresponding pigments in specific combination, and promise color reproduction which can ensure the color tones of process inks.
摘要翻译：在其中将反射率（％）绘制为纵坐标的光谱分布图中的黄色调色剂。波长（nm）为横坐标，粉末状态下的调色剂测定的反射率在波长500nm处为15〜20％，波长600nm处为75〜80％，青色调色剂其在类似的光谱分布图中，在波长为450nm的波长为475nm的粉末状态下对调色剂测定的反射率为30％至35％，波长为475nm的范围为35％至40％，以及品红色调色剂，其中在类似的光谱分布图中，在粉末状态下测定的调色剂的反射率在波长425nm处为5％至10％，波长为65％至70％，波长为 675nm。这些彩色调色剂各自含有特定组合的相应颜料，并且可以保证可以保证工艺油墨色调的色彩再现。

2. 发明申请

US20070031747A1 Color toner, and full-color image-forming method 有权
标题翻译：彩色调色剂，全彩色成像方法
公开(公告)号：US20070031747A1
公开(公告)日：2007-02-08
申请号：US11524213
申请日：2006-09-21
申请人： Takayuki Itakura , Takaaki Kotaki , Takaaki Kaya , Kazuhiko Hayami , Nozomu Komatsu
发明人： Takayuki Itakura , Takaaki Kotaki , Takaaki Kaya , Kazuhiko Hayami , Nozomu Komatsu
IPC分类号： G03G9/09
CPC分类号： G03G9/08711 , G03G9/0821 , G03G9/08755 , G03G9/08786 , G03G9/08788 , G03G9/09 , G03G9/0906 , G03G9/091 , G03G9/0914 , G03G9/0918 , G03G9/0926 , G03G9/09783
摘要： A yellow toner in which, in a spectral-distribution diagram in which the reflectance (%) is plotted as ordinate and the wavelength (nm) as abscissa, the reflectance determined for a toner in a state of powder ranges from 15% to 20% at a wavelength of 500 nm and ranges from 75% to 80% at a wavelength of 600 nm, a cyan toner in which, in the like spectral-distribution diagram, the reflectance determined for a toner in a state of powder ranges from 30% to 35% at a wavelength of 450 nm and ranges from 35% to 40% at a wavelength of 475 nm, and a magenta toner in which, in the like spectral-distribution diagram, the reflectance determined for a toner in a state of powder ranges from 5% to 10% at a wavelength of 425 nm and ranges from 65% to 70% at a wavelength of 675 nm. These color toners each contain corresponding pigments in specific combination, and promise color reproduction which can ensure the color tones of process inks.
摘要翻译：在其中以纵坐标绘制反射率（％）和横坐标波长（nm）的光谱分布图中，在粉末状态下调色剂测定的反射率为15％至20％的黄色调色剂，在波长为500nm，波长为600nm的范围为75％至80％的青色调色剂，其中在相同的光谱分布图中，粉末状态的调色剂测定的反射率为30％在波长为475nm的范围内为35％，波长为475nm的范围为35％至40％，品红色调色剂，其中在相同的光谱分布图中，测定粉末状态的调色剂的反射率在波长为425nm的范围为5％至10％，波长为675nm时为65％至70％。这些彩色调色剂各自含有特定组合的相应颜料，并且可以保证可以保证工艺油墨色调的色彩再现。

3. 发明授权

US06905808B2 Color toner, and full-color image forming method 失效
标题翻译：彩色调色剂，全彩色成像方法
公开(公告)号：US06905808B2
公开(公告)日：2005-06-14
申请号：US10345483
申请日：2003-01-17
申请人： Takayuki Itakura , Takaaki Kotaki , Takaaki Kaya , Kazuhiko Hayami , Nozomu Komatsu
发明人： Takayuki Itakura , Takaaki Kotaki , Takaaki Kaya , Kazuhiko Hayami , Nozomu Komatsu
IPC分类号： G03G9/08 , G03G9/09 , G03G9/097 , G03G13/20
CPC分类号： G03G9/08711 , G03G9/0821 , G03G9/08755 , G03G9/08786 , G03G9/08788 , G03G9/09 , G03G9/0906 , G03G9/091 , G03G9/0914 , G03G9/0918 , G03G9/0926 , G03G9/09783
摘要： A yellow toner in which, in a spectral-distribution diagram in which the reflectance (%) is plotted as ordinate and the wavelength (nm) as abscissa, the reflectance determined for a toner in a state of powder ranges from 15% to 20% at a wavelength of 500 nm and ranges from 75% to 80% at a wavelength of 600 nm, a cyan toner in which, in the like spectral-distribution diagram, the reflectance determined for a toner in a state of powder ranges from 30% to 35% at a wavelength of 450 nm and ranges from 35% to 40% at a wavelength of 475 nm, and a magenta toner in which, in the like spectral-distribution diagram, the reflectance determined for a toner in a state of powder ranges from 5% to 10% at a wavelength of 425 nm and ranges from 65% to 70% at a wavelength of 675 nm. These color toners each contain corresponding pigments in specific combination, and promise color reproduction which can ensure the color tones of process inks.
摘要翻译：在其中以纵坐标绘制反射率（％）和横坐标波长（nm）的光谱分布图中，在粉末状态下调色剂测定的反射率为15％至20％的黄色调色剂，在波长为500nm，波长为600nm的范围为75％至80％的青色调色剂，其中在相同的光谱分布图中，粉末状态的调色剂测定的反射率为30％在波长为475nm的范围内为35％，波长为475nm的范围为35％至40％，品红色调色剂，其中在相同的光谱分布图中，测定粉末状态的调色剂的反射率在波长为425nm的范围为5％至10％，波长为675nm时为65％至70％。这些彩色调色剂各自含有特定组合的相应颜料，并且可以保证可以保证工艺油墨色调的色彩再现。

4. 发明授权

US07361441B2 Color toner, and full-color image-forming method 有权
标题翻译：彩色调色剂，全彩色成像方法
公开(公告)号：US07361441B2
公开(公告)日：2008-04-22
申请号：US11524213
申请日：2006-09-21
申请人： Takayuki Itakura , Takaaki Kotaki , Takaaki Kaya , Kazuhiko Hayami , Nozomu Komatsu
发明人： Takayuki Itakura , Takaaki Kotaki , Takaaki Kaya , Kazuhiko Hayami , Nozomu Komatsu
IPC分类号： G03G9/09
CPC分类号： G03G9/08711 , G03G9/0821 , G03G9/08755 , G03G9/08786 , G03G9/08788 , G03G9/09 , G03G9/0906 , G03G9/091 , G03G9/0914 , G03G9/0918 , G03G9/0926 , G03G9/09783
摘要： A yellow toner in which, in a spectral-distribution diagram in which the reflectance (%) is plotted as ordinate and the wavelength (nm) as abscissa, the reflectance determined for a toner in a state of powder ranges from 15% to 20% at a wavelength of 500 nm and ranges from 75% to 80% at a wavelength of 600 nm, a cyan toner in which, in the like spectral-distribution diagram, the reflectance determined for a toner in a state of powder ranges from 30% to 35% at a wavelength of 450 nm and ranges from 35% to 40% at a wavelength of 475 nm, and a magenta toner in which, in the like spectral-distribution diagram, the reflectance determined for a toner in a state of powder ranges from 5% to 10% at a wavelength of 425 nm and ranges from 65% to 70% at a wavelength of 675 nm. These color toners each contain corresponding pigments in specific combination, and promise color reproduction which can ensure the color tones of process inks.
摘要翻译：在其中以纵坐标绘制反射率（％）和横坐标波长（nm）的光谱分布图中，在粉末状态下调色剂测定的反射率为15％至20％的黄色调色剂，在波长为500nm，波长为600nm的范围为75％至80％的青色调色剂，其中在相同的光谱分布图中，粉末状态的调色剂测定的反射率为30％在波长为475nm的范围内为35％，波长为475nm的范围为35％至40％，品红色调色剂，其中在相同的光谱分布图中，测定粉末状态的调色剂的反射率在波长为425nm的范围为5％至10％，波长为675nm时为65％至70％。这些彩色调色剂各自含有特定组合的相应颜料，并且可以保证可以保证工艺油墨色调的色彩再现。

5. 发明申请

US20050070631A1 Color toner, and full-color image forming method 有权
标题翻译：彩色调色剂，全彩色成像方法
公开(公告)号：US20050070631A1
公开(公告)日：2005-03-31
申请号：US10994344
申请日：2004-11-23
申请人： Takayuki Itakura , Takaaki Kotaki , Takaaki Kaya , Kazuhiko Hayami , Nozomu Komatsu
发明人： Takayuki Itakura , Takaaki Kotaki , Takaaki Kaya , Kazuhiko Hayami , Nozomu Komatsu
IPC分类号： G03G9/08 , G03G9/09 , G03G9/097 , C03C17/00 , C09D5/00
CPC分类号： G03G9/08711 , G03G9/0821 , G03G9/08755 , G03G9/08786 , G03G9/08788 , G03G9/09 , G03G9/0906 , G03G9/091 , G03G9/0914 , G03G9/0918 , G03G9/0926 , G03G9/09783
摘要： A yellow toner in which, in a spectral-distribution diagram in which the reflectance (%) is plotted as ordinate and the. wavelength (nm) as abscissa, the reflectance determined for a toner in a state of powder ranges from 15% to 20% at a wavelength of 500 nm and ranges from 75% to 80% at a wavelength of 600 nm, a cyan toner in which, in the like spectral-distribution diagram, the reflectance determined for a toner in a state of powder ranges from 30% to 35% at a wavelength of 450 nm and ranges from 35% to 40% at a wavelength of 475 nm, and a magenta toner in which, in the like sp.ectral-distribution diagram, the reflectance determined for a toner in a state of powder ranges from 5% to 10% at a wavelength of 425 nm and ranges from 65% to 70% at a wavelength of 675 nm. These color toners each contain corresponding pigments in specific combination, and promise color reproduction which can ensure the color tones of process inks.
摘要翻译：在其中将反射率（％）绘制为纵坐标的光谱分布图中的黄色调色剂。波长（nm）为横坐标，粉末状态下的调色剂测定的反射率在波长500nm处为15〜20％，波长600nm处为75〜80％，青色调色剂其在类似的光谱分布图中，在波长为450nm的波长为475nm的粉末状态下对调色剂测定的反射率为30％至35％，波长为475nm的范围为35％至40％，以及品红色调色剂，其中，在类似的配方图中，在粉末状态下测定的调色剂的反射率在波长为425nm的范围为5％至10％且在65nm至70％的范围内波长675nm。这些彩色调色剂各自含有特定组合的相应颜料，并且可以保证可以保证工艺油墨色调的色彩再现。

6. 发明授权

US07147980B2 Toner and image forming apparatus 有权
标题翻译：调色剂和成像设备
公开(公告)号：US07147980B2
公开(公告)日：2006-12-12
申请号：US10753490
申请日：2004-01-09
申请人： Takayuki Itakura , Takaaki Kotaki , Yasuhiro Ichikawa , Takaaki Kaya , Wakashi Iida , Hiroyuki Fujikawa , Kazuhiko Hayami , Nobuyoshi Sugahara , Yojiro Hotta
发明人： Takayuki Itakura , Takaaki Kotaki , Yasuhiro Ichikawa , Takaaki Kaya , Wakashi Iida , Hiroyuki Fujikawa , Kazuhiko Hayami , Nobuyoshi Sugahara , Yojiro Hotta
IPC分类号： G03G9/087
CPC分类号： G03G9/08742 , G03G9/08702 , G03G9/0874 , G03G9/08755 , G03G9/08788
摘要： A toner having toner particles each comprising at least a binder resin, a wax, and a colorant is used in an image forming apparatus which has a fixing means comprising a belt-shaped heating member and a pressurizing member. The binder resin contains a resin formed by a reaction between an epoxy group of a vinyl resin (A) having the epoxy group and a carboxyl group of a resin (B) having at least a polyester unit and the carboxyl group. The toner has a storage elastic modulus at a temperature of 80° C. (G′ 80) in the range of 1×105 to 1×108 Pa and has a storage elastic modulus at a temperature of 160° C. (G′ 160) in the range of 1×101 to 1×104 Pa.
摘要翻译：在具有包括带状加热构件和加压构件的固定装置的图像形成装置中使用具有至少粘合剂树脂，蜡和着色剂的调色剂颗粒的调色剂。粘合剂树脂包含由具有环氧基的乙烯基树脂（A）的环氧基和至少具有聚酯单元的树脂（B）的羧基与羧基之间的反应形成的树脂。调色剂在温度为80℃（G'80）的范围内具有在1×10 5至1×10 8 Pa的范围内的储能弹性模量，并且具有储能弹性模量在160℃的温度下（G'160）在1×10 -1至1×10 4 Pa的范围内。

7. 发明授权

US07288348B2 Color toner 有权
标题翻译：彩色墨粉
公开(公告)号：US07288348B2
公开(公告)日：2007-10-30
申请号：US10936565
申请日：2004-09-09
申请人： Kazuhiko Hayami , Tetsuya Ida , Nozomu Komatsu , Yasuhiro Ichikawa , Akira Hashimoto , Hirohide Tanikawa , Takakuni Kobori , Takayuki Itakura , Hiroyuki Fujikawa , Koh Ishigami , Nobuyoshi Sugahara
发明人： Kazuhiko Hayami , Tetsuya Ida , Nozomu Komatsu , Yasuhiro Ichikawa , Akira Hashimoto , Hirohide Tanikawa , Takakuni Kobori , Takayuki Itakura , Hiroyuki Fujikawa , Koh Ishigami , Nobuyoshi Sugahara
IPC分类号： G03G9/08
CPC分类号： G03G9/0817 , G03G9/081 , G03G9/0819 , G03G9/0821 , G03G9/0825 , G03G9/0827 , G03G9/08704 , G03G9/08706 , G03G9/08755 , G03G9/08782 , G03G9/08795 , G03G9/08797 , G03G9/09708
摘要： In a color toner having toner particles which have toner base particles containing a binder resin, a colorant and a wax, and inorganic fine particles, (i) in the toner base particles, particles having a circle-equivalent diameter of 3.00 μm or more as measured with a flow type particle image analyzer have an average circularity of from 0.920 or more to less than 0.950, (ii) in the particles having a circle-equivalent diameter of 3.00 μm or more in the toner base particles, particles having a circularity of 0.960 or more are in a number frequency cumulative value of 40% or less; and (iii) in the particles having a circle-equivalent diameter of 3.00 μm or more in the toner base particles, particles having a circularity of 0.920 or less are in a number frequency cumulative value of 30% or less. Also disclosed is a full-color image forming method making use of the toner.
摘要翻译：在具有调色剂颗粒的彩色调色剂中，所述调色剂颗粒具有包含粘合剂树脂，着色剂和蜡的调色剂颗粒和无机细颗粒，（i）在调色剂基础颗粒中，圆当量直径为3.00μm或更大的颗粒为用流动型粒子图像分析仪测定的平均圆形度为0.920以上且小于0.950μm，（ii）在调色剂母粒中的圆当量直径为3.00μm以上的粒子中，圆形度为 0.960以上的频率累积值在40％以下; 和（iii）在调色剂基础颗粒中的圆当量直径为3.00μm以上的颗粒中，圆形度为0.920以下的颗粒的数量频率累积值为30％以下。还公开了利用调色剂的全色图像形成方法。

8. 发明申请

US20050079429A1 Color toner 有权
标题翻译：彩色墨粉
公开(公告)号：US20050079429A1
公开(公告)日：2005-04-14
申请号：US10936565
申请日：2004-09-09
申请人： Kazuhiko Hayami , Tetsuya Ida , Nozomu Komatsu , Yasuhiro Ichikawa , Akira Hashimoto , Hirohide Tanikawa , Takakuni Kobori , Takayuki Itakura , Hiroyuki Fujikawa , Koh Ishigami , Nobuyoshi Sugahara
发明人： Kazuhiko Hayami , Tetsuya Ida , Nozomu Komatsu , Yasuhiro Ichikawa , Akira Hashimoto , Hirohide Tanikawa , Takakuni Kobori , Takayuki Itakura , Hiroyuki Fujikawa , Koh Ishigami , Nobuyoshi Sugahara
IPC分类号： G01Q30/10 , G03G9/08 , G03G9/087 , G03G9/097 , G03G13/00 , G03G13/01 , G03G15/01
CPC分类号： G03G9/0817 , G03G9/081 , G03G9/0819 , G03G9/0821 , G03G9/0825 , G03G9/0827 , G03G9/08704 , G03G9/08706 , G03G9/08755 , G03G9/08782 , G03G9/08795 , G03G9/08797 , G03G9/09708
摘要： In a color toner having toner particles which have toner base particles containing a binder resin, a colorant and a wax, and inorganic fine particles, (i) in the toner base particles, particles having a circle-equivalent diameter of 3.00 μm or more as measured with a flow type particle image analyzer have an average circularity of from 0.920 or more to less than 0.950, (ii) in the particles having a circle-equivalent diameter of 3.00 μm or more in the toner base particles, particles having a circularity of 0.960 or more are in a number frequency cumulative value of 40% or less; and (iii) in the particles having a circle-equivalent diameter of 3.00 μm or more in the toner base particles, particles having a circularity of 0.920 or less are in a number frequency cumulative value of 30% or less. Also disclosed is a full-color image forming method making use of the toner.
摘要翻译：在具有调色剂颗粒的彩色调色剂中，所述调色剂颗粒具有包含粘合剂树脂，着色剂和蜡的调色剂颗粒和无机细颗粒，（i）在调色剂基础颗粒中，圆当量直径为3.00μm或更大的颗粒为用流动型粒子图像分析仪测定的平均圆形度为0.920以上且小于0.950μm，（ii）在调色剂母粒中的圆当量直径为3.00μm以上的粒子中，圆形度为 0.960以上的频率累积值在40％以下; 和（iii）在调色剂基础颗粒中的圆当量直径为3.00μm以上的颗粒中，圆形度为0.920以下的颗粒的数量频率累积值为30％以下。还公开了利用调色剂的全色图像形成方法。

9. 发明授权

US07022449B2 Black toner with defined loss tangent 失效
标题翻译：黑色墨粉具有确定的损耗角正切
公开(公告)号：US07022449B2
公开(公告)日：2006-04-04
申请号：US10629751
申请日：2003-07-30
申请人： Nobuyoshi Sugahara , Takaaki Kohtaki , Yasuhiro Ichikawa , Tetsuya Ida , Kazuhiko Hayami , Nozomu Komatsu
发明人： Nobuyoshi Sugahara , Takaaki Kohtaki , Yasuhiro Ichikawa , Tetsuya Ida , Kazuhiko Hayami , Nozomu Komatsu
IPC分类号： G03G9/08 , G03G9/087
CPC分类号： G03G9/08755 , G03G9/0819 , G03G9/0821 , G03G9/0823 , G03G9/0827 , G03G9/08706 , G03G9/08708 , G03G9/08713 , G03G9/08715 , G03G9/08717 , G03G9/0872 , G03G9/08722 , G03G9/08724 , G03G9/08726 , G03G9/08728 , G03G9/08731 , G03G9/08733 , G03G9/08782 , G03G9/08795 , G03G9/08797 , G03G9/0904 , G03G9/09783
摘要： To provide a black toner having excellent charging property and transferring property against a severe environmental change. The black toner includes toner particle containing at least a binder resin, carbon black and a releasing agent, wherein: the toner particles have a weight-average particle diameter of 3.5 to 8.0 μm; total amount of acid value and hydroxyl value of the toner is 30 to 75 mgKOH/g; average circularity of particles contained in the toner having circle-equivalent diameter of 2 μm or more is 0.915 to 0.960; loss tangent tan δ (103 to 104 Hz) of the toner is represented by the following expression: tan δ(103 to 104 Hz)≦0.0060 where the loss tangent tan δ is represented by ∈″/∈′ where ∈″ denotes dielectric loss factor and ∈′ denotes dielectric constant, and tan δ (103 to 104 Hz) denotes the loss tangent in a frequency range of 103 to 104 Hz; and a ratio of tan δ (105 Hz) to tan δ (5×104 Hz) is represented by the following expression: 1.05≦tan δ(105 Hz)/tan δ(5×104 Hz)≦1.40 where tan δ (105 Hz) denotes loss tangent at the frequency of 105 Hz and tan δ (5×104 Hz) denotes loss tangent at the frequency of 5×104 Hz.
摘要翻译：为了提供具有优异的充电性能和转印性能的黑色调色剂，以防恶劣的环境变化。黑色调色剂包括至少含有粘合剂树脂，炭黑和脱模剂的调色剂颗粒，其中：调色剂颗粒的重均粒径为3.5-8.0μm; 调色剂的酸值和羟值的总量为30〜75mgKOH / g; 圆当量直径为2μm以上的调色剂中所含的颗粒的平均圆形度为0.915〜0.960，调色剂的损耗角正切tanδ（10 3至10 4 Hz）由以下表达式表示：<？in-line-formula description =“In-Line Formulas “end =”lead“？>tanδ（10 <3> <10> 4Hz）<= 0.0060 <？in-line-formula description =”In-line Formulas“ end =“tail”？>其中损耗正切tanδ由∈“/∈”表示，其中∈“表示介电损耗因子，∈'表示介电常数，tanδ（10 <3> 至10 4Hz）表示在10 3至10 4Hz的频率范围内的损耗角正切; 并且tanδ（10Hz）与tanδ（5×10 4 Hz）的比率由以下表达式表示：<？in-line-formula description =“ 在线公式“end =”lead“？> 1.05 <= TAN delta（10Hz）/tanδ（5×10 4 Hz）<= 1.40 < -line-formula description =“In-line Formulas”end =“tail”？>其中，tanδ（10Hz）表示频率为10 5的损耗角正切， Hz和tanδ（5×10 4 Hz）表示频率为5×10 4 Hz的损耗角正切。

10. 发明申请

US20060014095A1 Black toner with defined loss tangent 失效
标题翻译：黑色墨粉具有确定的损耗角正切
公开(公告)号：US20060014095A1
公开(公告)日：2006-01-19
申请号：US11225169
申请日：2005-09-14
申请人： Nobuyoshi Sugahara , Takaaki Kohtaki , Yasuhiro Ichikawa , Tetsuya Ida , Kazuhiko Hayami , Nozomu Komatsu
发明人： Nobuyoshi Sugahara , Takaaki Kohtaki , Yasuhiro Ichikawa , Tetsuya Ida , Kazuhiko Hayami , Nozomu Komatsu
IPC分类号： G03G9/087 , G03G9/097
CPC分类号： G03G9/08755 , G03G9/0819 , G03G9/0821 , G03G9/0823 , G03G9/0827 , G03G9/08706 , G03G9/08708 , G03G9/08713 , G03G9/08715 , G03G9/08717 , G03G9/0872 , G03G9/08722 , G03G9/08724 , G03G9/08726 , G03G9/08728 , G03G9/08731 , G03G9/08733 , G03G9/08782 , G03G9/08795 , G03G9/08797 , G03G9/0904 , G03G9/09783
摘要： To provide a black toner having excellent charging property and transferring property against a severe environmental change. The black toner includes toner particle containing at least a binder resin, carbon black and a releasing agent, wherein: the toner particles have a weight-average particle diameter of 3.5 to 8.0 μm; total amount of acid value and hydroxyl value of the toner is 30 to 75 mgKOH/g; average circularity of particles contained in the toner having circle-equivalent diameter of 2 μm or more is 0.915 to 0.960; loss tangent tan δ (103 to 104 Hz) of the toner is represented by the following expression: tan δ (103 to 104 Hz)≦0.0060 where the loss tangent tan δ is represented by ε″/ε′ where ε″ denotes dielectric loss factor and ε′ denotes dielectric constant, and tan δ (103 to 104 Hz) denotes the loss tangent in a frequency range of 103 to 104 Hz; and a ratio of tan δ (105 Hz) to tan δ (5×104 Hz) is represented by the following expression: 1.05≦tan δ (105 Hz)/tan δ (5×104 Hz)≦1.40 where tan δ (105 Hz) denotes loss tangent at the frequency of 105 Hz and tan δ (5×104 Hz) denotes loss tangent at the frequency of 5×104 Hz.
摘要翻译：为了提供具有优异的充电性能和转印性能的黑色调色剂，以防恶劣的环境变化。黑色调色剂包括至少含有粘合剂树脂，炭黑和脱模剂的调色剂颗粒，其中：调色剂颗粒的重均粒径为3.5-8.0μm; 调色剂的酸值和羟值的总量为30〜75mgKOH / g; 圆当量直径为2μm以上的调色剂中所含的颗粒的平均圆形度为0.915〜0.960，调色剂的损耗角正切tanδ（10 3至10 4 Hz）由以下表达式表示：<？in-line-formula description =“In-Line Formulas “end =”lead“？>tanδ（10 <3> <10> 4Hz）<= 0.0060 <？in-line-formula description =”In-line Formulas“ end =“tail”？>其中损耗正切tanδ由ε“/ epsilon表示，其中ε”表示介电损耗因子，ε“表示介电常数，tanδ（10 < 至10 4Hz）表示在10 3至10 4Hz的频率范围内的损耗角正切; 并且tanδ（10Hz）与tanδ（5×10 4 Hz）的比率由以下表达式表示：<？in-line-formula description =“ 在线公式“end =”lead“？> 1.05 <= TAN delta（10Hz）/tanδ（5×10 4 Hz）<= 1.40 < -line-formula description =“In-line Formulas”end =“tail”？>其中，tanδ（10Hz）表示频率为10 5的损耗角正切， Hz和tanδ（5×10 4 Hz）表示频率为5×10 4 Hz的损耗角正切。

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