公开(公告)号：US08841054B2

公开(公告)日：2014-09-23

申请号：US12254393

申请日：2008-10-20

申请人： Tadashi Dojo ,  Michihisa Magome ,  Eriko Yanase ,  Takashi Matsui ,  Tomohisa Sano ,  Akira Sakakibara ,  Shuichi Hiroko

发明人： Tadashi Dojo ,  Michihisa Magome ,  Eriko Yanase ,  Takashi Matsui ,  Tomohisa Sano ,  Akira Sakakibara ,  Shuichi Hiroko

IPC分类号： G03G15/08 ,  G03G9/083 ,  G03G9/08

CPC分类号： G03G9/083 ,  G03G9/0827 ,  G03G15/0813

摘要： An image-forming method is provided which can provide stable image density irrespective of use environments and does not cause image defects such as fogging, tailing, or transfer voids, even when being applied to a developing sleeve with a reduced diameter. In the image-forming method, a latent image bearing member and a toner bearing member bearing a magnetic toner on its surface and having inside a unit for generating a magnetic field are placed with a predetermined interval, and an alternating field is applied between the latent image bearing member and the toner bearing member, and an electrostatic latent image borne by the latent image bearing member is developed with the magnetic toner. The toner bearing member has a specific diameter, and the magnetic toner has a specific circularity and a specific compressibility. The total energy of the toner measured with a powder flowability measuring apparatus satisfies a specific value.

摘要翻译： 即使施加到直径减小的显影套筒上，也可以不管使用环境如何，都能够提供稳定的图像浓度的图像形成方法，并且不会引起图像缺陷，如起雾，拖尾或转印空隙。 在图像形成方法中，以预定间隔放置潜像承载部件和在其表面上具有磁性调色剂并且具有用于产生磁场的单元内的调色剂承载部件，并且在潜在的 图像承载部件和调色剂承载部件以及由潜像承载部件承载的静电潜像用磁性调色剂显影。 调色剂承载构件具有特定直径，并且磁性调色剂具有特定的圆形度和特定的可压缩性。 用粉末流动性测量装置测量的调色剂的总能量满足特定值。

公开(公告)号：US20100028795A1

公开(公告)日：2010-02-04

申请号：US12578112

申请日：2009-10-13

申请人： Michihisa Magome ,  Tadashi Dojo ,  Eriko Yanase ,  Takashi Matsui ,  Tomohisa Sano ,  Akira Sakakibara ,  Shuichi Hiroko

发明人： Michihisa Magome ,  Tadashi Dojo ,  Eriko Yanase ,  Takashi Matsui ,  Tomohisa Sano ,  Akira Sakakibara ,  Shuichi Hiroko

IPC分类号： G03G9/08 ,  G03G9/087

CPC分类号： G03G9/0827 ,  G03G9/083 ,  G03G9/08711 ,  G03G9/08755 ,  G03G9/08782 ,  G03G9/08793 ,  G03G9/09733

摘要： In a toner containing at least a binder resin, a colorant, an ester compound and a low-melting material, the ester compound is an ester of dipentaerythritol with a carboxylic acid having 18 or more to 25 or less carbon atoms, and, where the melting point of the ester compound is represented by Tm(A) (° C.) and the melting point of the low-melting material is represented by Tm(B) (° C.), the toner satisfies the relationship of: Tm(B)≦Tm(A)+5.

摘要翻译： 在至少含有粘合剂树脂，着色剂，酯化合物和低熔点材料的调色剂中，酯化合物是二季戊四醇与碳原子数为18以上且25以下的羧酸的酯， 酯化合物的熔点由Tm（A）（℃）表示，低熔点材料的熔点由Tm（B）（℃）表示，调色剂满足Tm（ B）（A）+5。

公开(公告)号：US20090130580A1

公开(公告)日：2009-05-21

申请号：US12272976

申请日：2008-11-18

申请人： Tadashi Dojo ,  Michihisa Magome ,  Eriko Yanase ,  Takashi Matsui ,  Tomohisa Sano ,  Akira Sakakibara ,  Shuichi Hiroko

发明人： Tadashi Dojo ,  Michihisa Magome ,  Eriko Yanase ,  Takashi Matsui ,  Tomohisa Sano ,  Akira Sakakibara ,  Shuichi Hiroko

IPC分类号： G03G9/083

CPC分类号： G03G9/0836 ,  G03G9/0819 ,  G03G9/0821 ,  G03G9/0825 ,  G03G9/0827 ,  G03G9/0833 ,  G03G9/0834 ,  G03G9/0835 ,  G03G9/09716 ,  G03G9/09725

摘要： In a magnetic toner which has magnetic toner base particles containing at least a binder resin and a magnetic material, and an inorganic fine powder, (i) the magnetic toner has an average circularity of from 0.950 or more to 1.000 or less, (ii) the magnetic toner has a compressibility of 30 or less, and (iii) the magnetic toner contains boron nitride particles having a median diameter (D50) of from 0.5 μm or more to 8.0 μm or less, as the inorganic fine powder in an amount of from 0.05 part by mass or more to 1.00 part by mass or less based on 100 parts by mass of the magnetic toner base particles. This provides a magnetic toner with which stable image density can be achieved without regard to service environment and which do not cause any image defects such as fog.

摘要翻译： 在具有至少含有粘合剂树脂和磁性材料的磁性调色剂基础颗粒和无机细粉末的磁性调色剂中，（i）磁性调色剂的平均圆形度为0.950以上至1.000以下，（ii） 磁性调色剂的压缩率为30以下，（iii）磁性调色剂含有中值粒径（D50）为0.5μm以上至8.0μm以下的氮化硼粒子，作为无机细粉末的量 相对于100质量份的磁性调色剂基础颗粒，为0.05质量份以上至1.00质量份以下。 这提供了一种磁性调色剂，其可以在不考虑使用环境的情况下实现稳定的图像浓度，并且不会引起诸如雾的图像缺陷。

公开(公告)号：US20090047043A1

公开(公告)日：2009-02-19

申请号：US12254393

申请日：2008-10-20

申请人： Tadashi Dojo ,  Michihisa Magome ,  Eriko Yanase ,  Takashi Matsui ,  Tomohisa Sano ,  Akira Sakakibara ,  Shuichi Hiroko

发明人： Tadashi Dojo ,  Michihisa Magome ,  Eriko Yanase ,  Takashi Matsui ,  Tomohisa Sano ,  Akira Sakakibara ,  Shuichi Hiroko

IPC分类号： G03G15/08 ,  G03G9/083

CPC分类号： G03G9/083 ,  G03G9/0827 ,  G03G15/0813

摘要： An image-forming method is provided which can provide stable image density irrespective of use environments and does not cause image defects such as fogging, tailing, or transfer voids, even when being applied to a developing sleeve with a reduced diameter. In the image-forming method, a latent image bearing member and a toner bearing member bearing a magnetic toner on its surface and having inside a unit for generating a magnetic field are placed with a predetermined interval, and an alternating field is applied between the latent image bearing member and the toner bearing member, and an electrostatic latent image borne by the latent image bearing member is developed with the magnetic toner. The toner bearing member has a specific diameter, and the magnetic toner has a specific circularity and a specific compressibility. The total energy of the toner measured with a powder flowability measuring apparatus satisfies a specific value.

摘要翻译： 即使施加到直径减小的显影套筒上，也可以不管使用环境如何，都能够提供稳定的图像浓度的图像形成方法，并且不会引起图像缺陷，如起雾，拖尾或转印空隙。 在图像形成方法中，以预定间隔放置潜像承载部件和在其表面上具有磁性调色剂并且具有用于产生磁场的单元内的调色剂承载部件，并且在潜在的 图像承载部件和调色剂承载部件以及由潜像承载部件承载的静电潜像用磁性调色剂显影。 调色剂承载构件具有特定直径，并且磁性调色剂具有特定的圆形度和特定的可压缩性。 用粉末流动性测量装置测量的调色剂的总能量满足特定值。

公开(公告)号：US07452649B2

公开(公告)日：2008-11-18

申请号：US10936561

申请日：2004-09-09

申请人： Michihisa Magome ,  Eriko Yanase ,  Atsushi Tani

发明人： Michihisa Magome ,  Eriko Yanase ,  Atsushi Tani

IPC分类号： G03G9/083

CPC分类号： G03G9/0819 ,  G03G9/0836 ,  G03G9/0837 ,  G03G9/0839 ,  G03G9/08797

摘要： A magnetic toner is provided having at last a binder resin and a magnetic material and having a weight-average particle diameter of 3 μm to 10 μm. The magnetic material has been surface-treated with a low-softening substance (A), and has a compressibility of 35 or more which can be calculated according to a specific expression. The softening point of the magnetic toner is from 40° C. to 85° C. in measurement by a flow tester. The magnetic toner has a resin component containing 1% to 60% by weight of a tetrahydrofuran-insoluble matter. This magnetic toner is superior in low-temperature fixing performance and has good fixing performance in a broad fixing range.

摘要翻译： 提供了一种磁性调色剂，其最后具有粘合剂树脂和磁性材料，其重均粒径为3μm至10μm。 磁性材料已经用低软​​化物质（A）进行表面处理，并且具有35以上的压缩率，这可以根据具体的表达式计算。 磁性调色剂的软化点在通过流动测试仪测量时为40℃至85℃。 磁性调色剂具有含有1重量％至60重量％的四氢呋喃不溶物质的树脂组分。 该磁性调色剂在低温定影性能方面优异，并且在广泛的定影范围内具有良好的定影性能。

公开(公告)号：US20080171277A1

公开(公告)日：2008-07-17

申请号：US12050420

申请日：2008-03-18

申请人： Tatsuhiko Chiba ,  Michihisa Magome ,  Eriko Yanase ,  Takeshi Kaburagi

发明人： Tatsuhiko Chiba ,  Michihisa Magome ,  Eriko Yanase ,  Takeshi Kaburagi

IPC分类号： G03G9/083

CPC分类号： G03G9/08 ,  G03G9/083 ,  G03G9/087

摘要： The present invention provides a magnetic toner which is hardly influenced by an environment, and with which an image with high quality and excellent resolution can be stably even under low humidity. In the magnetic toner of present invention: I) a ratio of an iron element content to a carbon element content present on the toner particle surface is less than 0.0010; II) 50 number % or more of toner particles satisfy a relationship of D/C≦0.02 (C: projected area diameter of toner particles, D: minimum value for a distance between a magnetic iron oxide fine particle and the toner particle surface); and III) 40-95 number % of toner particles satisfy a structure where 70 number % or more of the magnetic iron oxide fine particles in the respective toner particles are present up to a depth of 0.2 time as far as C from the toner particle surface.

摘要翻译： 本发明提供一种几乎不受环境影响的磁性调色剂，即使在低湿度下也能稳定地进行高品质，高分辨率的图像稳定化。 在本发明的磁性调色剂中：I）调色剂颗粒表面上存在的铁元素含量与碳元素含量之比小于0.0010; II）50数量％以上的调色剂颗粒满足D / C <0.02的关系（C：调色剂颗粒的投影面积直径D：磁性氧化铁微粒与调色剂颗粒表面之间的距离的最小值） ; 和III）40-95％的调色剂颗粒满足其中相应调色剂颗粒中的磁性氧化铁细颗粒的70个数量％或更多到达调色剂颗粒表面的深度为0.2倍的结构 。

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：US06638674B2

公开(公告)日：2003-10-28

申请号：US09911724

申请日：2001-07-25

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

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

IPC分类号： G03G9083

CPC分类号： G03G9/08791 ,  G03G9/0821 ,  G03G9/0825 ,  G03G9/0827 ,  G03G9/083 ,  G03G9/08726

摘要： A magnetic toner is formed of magnetic toner particles each comprising a binder resin, an iron oxide, a sulfur-containing polymer, and inorganic fine powder blended with the magnetic toner particles, the toner having a weight-average particle size (D4) of 3-10 &mgr;m, and either (a) an average circularity of at least 0.970, and a magnetization of 10-50 Am2/kg (emu/g) at a magnetic field of 79.6 kA/m (1000 oersted), or (b) toner particles which retain carbon in an amount of A and iron in an amount of B at surfaces thereof, satisfying: B/A

摘要翻译： 磁性调色剂由各自包含粘合剂树脂，氧化铁，含硫聚合物和与磁性调色剂颗粒混合的无机细粉末的磁性调色剂颗粒形成，调色剂的重均粒径（D4）为3 -10μm，并且（a）在79.6kA / m（1000奥斯特）的磁场下的平均圆形度为至少0.970，磁化强度为10-50Am 2 / kg（emu / g），或 （b）在其表面保留B量的A和铁的碳的调色剂颗粒满足：B / A <0.001，并且含有至少50数量的D / C的磁性调色剂颗粒< 0.02，其中C表示颗粒投影面积当量圆直径，D表示磁性调色剂颗粒的表面与其中所含的氧化铁颗粒之间的最小距离。

公开(公告)号：US08426091B2

公开(公告)日：2013-04-23

申请号：US12260890

申请日：2008-10-29

申请人： Michihisa Magome ,  Tadashi Dojo ,  Eriko Yanase ,  Takashi Matsui ,  Tomohisa Sano ,  Shuichi Hiroko

发明人： Michihisa Magome ,  Tadashi Dojo ,  Eriko Yanase ,  Takashi Matsui ,  Tomohisa Sano ,  Shuichi Hiroko

IPC分类号： G03G13/04

CPC分类号： G03G15/0914 ,  G03G9/0819 ,  G03G9/0833 ,  G03G9/0834 ,  G03G9/0835 ,  G03G9/0836 ,  G03G9/0837 ,  G03G9/09716 ,  G03G9/09725 ,  G03G2215/0614

摘要： To solve a thin image density and sweeping occurring when a toner carrying member having a small diameter is used, provided is an image-forming method including: a charging step; an electrostatic latent image-forming step; a developing step; a transferring step; and a fixing step, in which a magnetic toner to be used in the method has a specific weight average particle diameter (D4); the magnetic toner has a specific intensity of magnetization in a specific magnetic field; and a surface free energy of a surface of the magnetic toner and a surface free energy of a surface of a toner carrying member to be used in the method satisfy specific relationships.

摘要翻译： 为了解决当使用具有小直径的调色剂承载构件时发生的薄图像浓度和扫描，提供了一种图像形成方法，包括：充电步骤; 静电潜像形成步骤; 发展步骤; 转移步骤; 以及固定步骤，其中在该方法中使用的磁性调色剂具有比重重量平均粒径（D4）; 磁性调色剂在特定磁场中具有特定的磁化强度; 并且该方法中使用的调色剂承载构件的表面的表面自由能满足特定的关系。

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。