公开(公告)号：US06465144B2

公开(公告)日：2002-10-15

申请号：US09800655

申请日：2001-03-08

申请人： Akira Hashimoto ,  Kenji Okado ,  Tsutomu Kukimoto ,  Tatsuya Nakamura ,  Tsuyoshi Takiguchi ,  Tatsuhiko Chiba ,  Michihisa Magome ,  Keiji Komoto

发明人： Akira Hashimoto ,  Kenji Okado ,  Tsutomu Kukimoto ,  Tatsuya Nakamura ,  Tsuyoshi Takiguchi ,  Tatsuhiko Chiba ,  Michihisa Magome ,  Keiji Komoto

IPC分类号： G03G9083

CPC分类号： G03G9/08708 ,  G03G9/0819 ,  G03G9/0825 ,  G03G9/0827 ,  G03G9/0833 ,  G03G9/0835 ,  G03G9/0836 ,  G03G9/0837 ,  G03G9/0838 ,  G03G9/08782

摘要： A magnetic toner includes: magnetic toner particles each comprising at least a binder resin and magnetic toner, and inorganic fine powder. The magnetic toner has an average circularity of at least 0.970, and a magnetization of 10-50 Am2/kg at a magnetic field of 79.6 kA/m. The magnetic powder comprises at least magnetic iron oxide. The magnetic toner particles retain carbon in an amount of A and iron in an amount of B at surfaces thereof as measured by X-ray photoelectron spectroscopy, satisfying: B/A

摘要翻译： 磁性调色剂包括：各自至少包含粘合剂树脂和磁性调色剂的磁性调色剂颗粒和无机细粉末。 磁性调色剂在79.6kA / m的磁场下的平均圆形度为至少0.970，磁化强度为10-50Am 2 / kg。 磁粉至少包含磁性氧化铁。 磁性调色剂颗粒通过X射线光电子能谱法测定其表面的B量的A和铁的碳，满足：B / A <0.001。 粘合剂树脂包括由至少包含苯乙烯单体的单体的聚合形成的树脂。 磁性调色剂的残留苯乙烯单体含量小于300ppm，并且包含满足以下关系的至少50％的调色剂颗粒：D / C <= 0.02，其中C表示磁性的体积平均粒径 调色剂，D表示磁性调色剂颗粒的表面与磁性调色剂颗粒中所含的磁性粉末颗粒之间的最小距离。 由于上述特征，即使在无清洁器模式的图像形成系统中，磁性调色剂也能表现出良好的电摄影性能，包括极佳的带电性和少量的转印残留调色剂。

公开(公告)号：US06653035B2

公开(公告)日：2003-11-25

申请号：US10202903

申请日：2002-07-26

申请人： Keiji Komoto ,  Tatsuya Nakamura ,  Tatsuhiko Chiba ,  Michihisa Magome ,  Akira Hashimoto ,  Takeshi Kaburagi ,  Eriko Yanase

发明人： Keiji Komoto ,  Tatsuya Nakamura ,  Tatsuhiko Chiba ,  Michihisa Magome ,  Akira Hashimoto ,  Takeshi Kaburagi ,  Eriko Yanase

IPC分类号： G03G9083

CPC分类号： G03G9/0834 ,  G03G9/0819 ,  G03G9/0825 ,  G03G9/0827 ,  G03G9/0836 ,  G03G9/0837 ,  G03G9/0838 ,  G03G9/08711 ,  G03G9/08722 ,  G03G9/08771 ,  G03G9/08782 ,  G03G9/08791

摘要： A magnetic toner exhibiting stable performances under various environmental conditions is formed of toner particles each comprising at least a binder resin and iron oxide dispersed therein. Relative to the dry specific gravity (A) of the magnetic toner, the magnetic toner is characterized by a specific gravity distribution of toner particle fractions obtainable through wet sedimentation and including: at most 15 wt. % of a fraction having a specific gravity of above (A)×1.000 and at most (A)×1.025, 0.1-20 wt. % of a fraction having a specific gravity of above (A)×0.975 and at most (A)×1.000, at least 30 wt. % of a fraction having a specific gravity of above (A)×0.950 and at most (A)×0.975, 0.1-20 wt. % of a fraction having a specific gravity of above (A)×0.925 and at most (A)×0.950, and at most 15 wt. % of a fraction having a specific gravity of above (A)×0.900 and at most (A)×0.925.

公开(公告)号：US07070898B2

公开(公告)日：2006-07-04

申请号：US10726503

申请日：2003-12-04

申请人： Tatsuya Nakamura ,  Kenji Okado ,  Akira Hashimoto ,  Keiji Komoto

发明人： Tatsuya Nakamura ,  Kenji Okado ,  Akira Hashimoto ,  Keiji Komoto

IPC分类号： G03G9/08

CPC分类号： G03G9/08 ,  G03G9/087

摘要： A toner having a favorable fixability, excelling in charge stability, and capable of forming a image of retaining a high image density and a high resolution in long-term use is provided. That is, the toner of the present invention is a toner obtained by polymerizing a polymerizable monomer composition comprising a polymerizable monomer and a colorant, in which the polymerizable monomer composition is polymerized using a polymerization initiator comprising a redox initiator which includes an organic peroxide with a 10-hour half-life temperature of 86° C. or higher and an reducing agent; the toner has a ratio of a weight-average particle diameter to a number-average particle diameter of 1.40 or less; and the toner has top of a main-peak in a molecular weight range of 5,000 to 50,000 in a molecular weight distribution measured using GPC of the THF-soluble part thereof, including t-butanol with a content of 0.1 to 1,000 ppm.

摘要翻译： 提供了具有良好的定影性，电荷稳定性优异并且能够形成长期使用中保持高图像浓度和高分辨率的图像的调色剂。 也就是说，本发明的调色剂是通过使包含可聚合单体和着色剂的可聚合单体组合物聚合而获得的调色剂，其中使用包含有机过氧化物的氧化还原引发剂的聚合引发剂聚合可聚合单体组合物， 10小时半衰期为86℃以上的还原剂; 调色剂的重均粒径与数均粒径的比值为1.40以下; 并且调色剂在其THF可溶部分的GPC测量的分子量分布中具有5000至50,000的分子量范围内的主峰顶部，包括含量为0.1至1,000ppm的叔丁醇。

公开(公告)号：US06183927B2

公开(公告)日：2001-02-06

申请号：US09338422

申请日：1999-06-23

申请人： Michihisa Magome ,  Hiroaki Kawakami ,  Tatsuya Nakamura ,  Tatsuhiko Chiba ,  Kohji Inaba ,  Yuji Moriki ,  Shinya Yachi

发明人： Michihisa Magome ,  Hiroaki Kawakami ,  Tatsuya Nakamura ,  Tatsuhiko Chiba ,  Kohji Inaba ,  Yuji Moriki ,  Shinya Yachi

IPC分类号： G03G9097

CPC分类号： G03G9/0821 ,  G03G9/0819 ,  G03G9/0975 ,  G03G9/09783 ,  G03G9/09791

摘要： An electrophotographic toner is formed of toner particles each comprising at least a binder resin, a colorant and a release agent, and a low-crystalline aromatic metal compound present at surfaces of the toner particles. The toner has an average circularity of at least 0.955, and the low-crystalline aromatic metal compound has an X-ray diffraction characteristic free from peaks exhibiting a measurement intensity of at least 10000 cps and a half-value half-width of at most 0.3 deg. in a range of measurement angles 2&thgr; of 6 to 40 deg. Because of the low crystallinity, the aromatic metal compound is uniformly applied onto the toner particle surfaces to stabilize the chargeability and transferability of the toner.

摘要翻译： 电子照相调色剂由调色剂颗粒形成，每个调色剂颗粒至少包含粘合剂树脂，着色剂和脱模剂，以及存在于调色剂颗粒表面的低结晶芳族金属化合物。 调色剂的平均圆形度至少为0.955，低结晶性芳香族金属化合物的X射线衍射特性，不存在显示出至少10000cps的测定强度和0.5以下的半值半值的峰值 度 在测量角度2θ为6至40度的范围内。 由于低结晶度，将芳族金属化合物均匀地施加到调色剂颗粒表面上，以稳定调色剂的带电性和转印性。

公开(公告)号：US07906266B2

公开(公告)日：2011-03-15

申请号：US11129483

申请日：2005-05-16

申请人： Michihisa Magome ,  Eriko Yanase ,  Tatsuya Nakamura

发明人： Michihisa Magome ,  Eriko Yanase ,  Tatsuya Nakamura

IPC分类号： G03G9/083

CPC分类号： G03G9/0827 ,  G03G9/0819 ,  G03G9/0834 ,  G03G9/0835 ,  G03G9/08711

摘要： A magnetic toner is disclosed including magnetic toner particles containing at least a binder resin and a magnetic powder. The magnetic powder contains a specific amount of phosphorus elements, and a specific amount of silicon elements, based on the iron element, with the ratio of the phosphorous element to the silicon elements being in a specific range, and has a specific volume-average particle diameter, a specific saturation magnetization in a specific magnetic field, and a specific residual magnetization. The magnetic toner can realize high image density and reduce fog and spots around line images regardless of environmental variation, and is superior in durability, and besides, can achieve small toner consumption.

摘要翻译： 公开了包含至少含有粘合剂树脂和磁性粉末的磁性调色剂颗粒的磁性调色剂。 磁性粉末含有特定量的磷元素，并且基于铁元素的特定量的硅元素与磷元素与硅元素的比例在特定范围内，并且具有比体积平均粒子 直径，特定磁场中的特定饱和磁化强度和特定残余磁化强度。 磁性调色剂可以实现高图像密度，并且减少线图像周围的雾和斑点，而不管环境变化如何，并且耐久性优异，此外，可以实现小的墨粉消耗。

公开(公告)号：US20070238043A1

公开(公告)日：2007-10-11

申请号：US11736057

申请日：2007-04-17

申请人： Satoshi Otake ,  Masayoshi Shimamura ,  Yusutaka Akashi ,  Kazunori Saiki ,  Nene Dojo ,  Minoru Ito ,  Michihisa Magome ,  Eriko Yanase ,  Tatsuya Nakamura

发明人： Satoshi Otake ,  Masayoshi Shimamura ,  Yusutaka Akashi ,  Kazunori Saiki ,  Nene Dojo ,  Minoru Ito ,  Michihisa Magome ,  Eriko Yanase ,  Tatsuya Nakamura

IPC分类号： G03G15/08

CPC分类号： G03G15/09 ,  G03G9/0827 ,  G03G9/0833 ,  G03G9/0835 ,  G03G9/0838

摘要： A developing method is provided in which a developer is carried on a developer carrying member, a thin layer of the developer is formed thereon and a latent image on a latent image bearing member is developed with a developer. The developer is composed of magnetic toner particles containing a binder resin and a magnetic powder. The magnetic powder has a saturation magnetization of 67.0 Am2/kg to 75.0 Am2/kg in a magnetic field of 79.6 kA/m (1,000 oersteds) and has a residual magnetization of 4.5 Am2/kg or less. In the surface profile of the conductive resin coat layer of the developer carrying member, the relationship 1.00≦S/A≦1.65 is satisfied where S is a surface area of regions zoned by an area A of microscopic unevenness regions from which parts exceeding a reference plane by 0.5×r (r: weight average particle diameter (μm) of a toner used) or more have been excluded.

摘要翻译： 提供了一种显影剂，其中显影剂被承载在显影剂承载构件上，在其上形成显影剂的薄层，并且潜像承载构件上的潜像用显影剂显影。 显影剂由含有粘合剂树脂和磁性粉末的磁性调色剂颗粒组成。 磁性粉末在79.6kA / m（1,000奥斯特）的磁场中具有67.0Am 2 / kg至75.0Am 2 / kg的饱和磁化强度，并且具有残留 4.5Am 2 / kg以下的磁化强度。 在显影剂承载构件的导电树脂涂层的表面轮廓中，满足关系1.00 <= S / A <= 1.65，其中S是由微观不均匀区域的区域A划分的区域的表面积，其中零件超过 已经排除了0.5xr（r：调色剂的重均粒径（mum））以上的基准面以上。

公开(公告)号：US5948582A

公开(公告)日：1999-09-07

申请号：US50464

申请日：1998-03-31

申请人： Tatsuya Nakamura ,  Shinya Yachi ,  Michihisa Magome

发明人： Tatsuya Nakamura ,  Shinya Yachi ,  Michihisa Magome

IPC分类号： G03G9/08 ,  G03G9/087 ,  G03G9/097

CPC分类号： G03G9/09725 ,  G03G9/0819 ,  G03G9/0827 ,  G03G9/09708 ,  G03G9/08782

摘要： A toner for developing an electrostatic image is constituted by at least toner particles and an additive. The toner particles have a shape factor SF-1 of 100-160, a phase factor SF-2 of 100-140 and a weight-average particle size of 4-10 .mu.m as measured by a Coulter counter. The toner contains particles having circle-equivalent diameters in a range of 0.6-2.0 .mu.m and satisfying the following conditions (i)-(iii): (i) a first value C.sub.1 of 3-50% by number as measured by a flow particle image analyzer after application of a ultrasonic wave of 20 kHz for 5 min., (ii) a second value C.sub.2 of 2-40% by number as measured by the flow particle image analyzer after application of a ultrasonic wave of 20 kHz for 1 min., and (iii) a value C of 105-150 obtained according to the following equation: C=(C.sub.1 /C.sub.2).times.100 The toner is effective in improving image-forming characteristics in a continuous image formation on a large number of sheets.

摘要翻译： 用于显影静电图像的调色剂至少由调色剂颗粒和添加剂构成。 调色剂颗粒具有100-160的形状因子SF-1，100-140的相位因子SF-2和通过Coulter计数器测量的重均粒径为4-10μm。 调色剂含有圆度当量直径在0.6-2.0μm范围内且满足以下条件（i） - （iii）的颗粒：（i）通过流动测量的3-50数量级的第一值C1 20分钟的超声波施加5分钟后的粒子图像分析仪，（ii）在20kHz的超声波施加1以后，由流动粒子图像分析仪测定的第二值为2-40数量的C2 min，和（iii）根据以下等式获得的值为105-150的值C =（C1 / C2）×100调色剂有效地改善了在大量片材上的连续成像中的图像形成特性 。

公开(公告)号：US07361442B2

公开(公告)日：2008-04-22

申请号：US11736057

申请日：2007-04-17

申请人： Satoshi Otake ,  Masayoshi Shimamura ,  Yusutaka Akashi ,  Kazunori Saiki ,  Nene Dojo ,  Minoru Ito ,  Michihisa Magome ,  Eriko Yanase ,  Tatsuya Nakamura

发明人： Satoshi Otake ,  Masayoshi Shimamura ,  Yusutaka Akashi ,  Kazunori Saiki ,  Nene Dojo ,  Minoru Ito ,  Michihisa Magome ,  Eriko Yanase ,  Tatsuya Nakamura

IPC分类号： G03G15/08

CPC分类号： G03G15/09 ,  G03G9/0827 ,  G03G9/0833 ,  G03G9/0835 ,  G03G9/0838

摘要： A developing method is provided in which a developer is carried on a developer carrying member, a thin layer of the developer is formed thereon and a latent image on a latent image bearing member is developed with a developer. The developer is composed of magnetic toner particles containing a binder resin and a magnetic powder. The magnetic powder has a saturation magnetization of 67.0 Am2/kg to 75.0 Am2/kg in a magnetic field of 79.6 kA/m (1,000 oersteds) and has a residual magnetization of 4.5 Am2/kg or less. In the surface profile of the conductive resin coat layer of the developer carrying member, the relationship 1.00≦S/A≦1.65 is satisfied where S is a surface area of regions zoned by an area A of microscopic unevenness regions from which parts exceeding a reference plane by 0.5×r (r: weight average particle diameter (μm) of a toner used) or more have been excluded.

摘要翻译： 提供了一种显影剂，其中显影剂被承载在显影剂承载构件上，在其上形成显影剂的薄层，并且潜像承载构件上的潜像用显影剂显影。 显影剂由含有粘合剂树脂和磁性粉末的磁性调色剂颗粒组成。 磁性粉末在79.6kA / m（1,000奥斯特）的磁场中具有67.0Am 2 / kg至75.0Am 2 / kg的饱和磁化强度，并且具有残留 4.5Am 2 / kg以下的磁化强度。 在显影剂承载构件的导电树脂涂层的表面轮廓中，满足关系1.00 <= S / A <= 1.65，其中S是由微观不均匀区域的区域A划分的区域的表面积，其中零件超过 已经排除了0.5xr（r：调色剂的重均粒径（mum））以上的基准面以上。

公开(公告)号：US20060188800A1

公开(公告)日：2006-08-24

申请号：US11129483

申请日：2005-05-16

申请人： Michihisa Magome ,  Eriko Yanase ,  Tatsuya Nakamura

发明人： Michihisa Magome ,  Eriko Yanase ,  Tatsuya Nakamura

IPC分类号： G03G9/083

CPC分类号： G03G9/0827 ,  G03G9/0819 ,  G03G9/0834 ,  G03G9/0835 ,  G03G9/08711

摘要： A magnetic toner is disclosed including magnetic toner particles containing at least a binder resin and a magnetic powder. The magnetic powder contains a specific amount of phosphorus elements, and a specific amount of silicon elements, based on the iron element, with the ratio of the phosphorous element to the silicon elements being in a specific range, and has a specific volume-average particle diameter, a specific saturation magnetization in a specific magnetic field, and a specific residual magnetization. The magnetic toner can realize high image density and reduce fog and spots around line images regardless of environmental variation, and is superior in durability, and besides, can achieve small toner consumption.

摘要翻译： 公开了包含至少含有粘合剂树脂和磁性粉末的磁性调色剂颗粒的磁性调色剂。 磁性粉末含有特定量的磷元素，并且基于铁元素的特定量的硅元素与磷元素与硅元素的比例在特定范围内，并且具有比体积平均粒子 直径，特定磁场中的比饱和磁化强度和特定残余磁化强度。 磁性调色剂可以实现高图像密度，并且减少线图像周围的雾和斑点，而不管环境变化如何，并且耐久性优异，此外，可以实现小的墨粉消耗。

公开(公告)号：US5582902A

公开(公告)日：1996-12-10

申请号：US145674

申请日：1993-11-04

申请人： Makoto Kanbayashi ,  Takeshi Menjo ,  Takayuki Nagatsuka ,  Takashige Kasuya ,  Tatsuya Nakamura ,  Tatsuhiko Chiba ,  Kohji Inaba

发明人： Makoto Kanbayashi ,  Takeshi Menjo ,  Takayuki Nagatsuka ,  Takashige Kasuya ,  Tatsuya Nakamura ,  Tatsuhiko Chiba ,  Kohji Inaba

IPC分类号： G03G7/00 ,  B32B5/16

CPC分类号： G03G7/0013 ,  G03G7/0053 ,  Y10T428/24893 ,  Y10T428/249953 ,  Y10T428/25 ,  Y10T428/259 ,  Y10T428/31504 ,  Y10T428/31786 ,  Y10T428/31855 ,  Y10T428/31935

摘要： A laminate film suitable for providing a transparency for an OHP (overhead projector) is formed by disposing an absorbing layer on a substrate. The absorbing layer functions to allow addition of a wax component to a toner so as to improve the color mixing characteristic and anti-offset characteristic of the toner without causing a wax exudation trace which is liable to occur in a fixed toner image if the absorbing layer is not provided.

摘要翻译： 通过在基板上设置吸收层，形成适于提供OHP（高射投影仪）的透明性的层压膜。 吸收层的作用是允许将蜡组分添加到调色剂中，以便改善调色剂的混色特性和抗偏移特性，而不会在固定的调色剂图像中容易发生易渗透的蜡渗出痕迹，如果吸收层 没有提供