公开(公告)号：US07678523B2

公开(公告)日：2010-03-16

申请号：US12330658

申请日：2008-12-09

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

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

IPC分类号： G03G9/00

CPC分类号： G03G9/0835 ,  G03G9/0804 ,  G03G9/0821 ,  G03G9/0827 ,  G03G9/0833 ,  G03G9/0839 ,  G03G9/08711 ,  G03G9/08755 ,  G03G9/08793 ,  G03G9/08795 ,  G03G9/08797

摘要： To provide a magnetic toner which has superior low-temperature fixing performance and pressure roller anti-staining properties even in various forms of use, has been kept from image defects such as image non-uniformity even during long-time image reproduction and can achieve high-level image quality. In a magnetic toner having toner particles containing at least a binder resin and a magnetic material, the activation energy Ea (kJ/mol) that is determined from a shift factor aT120 in a master curve of the toner, prepared when 120° C. is set as reference temperature, and the activation energy Eb (kJ/mol) that is determined from a shift factor aT150 in a master curve of the toner, prepared when 150° C. is set as reference temperature, satisfy Expression (1), and the Ea is 110 kJ/mol or less: 1.00≦Ea/Eb

摘要翻译： 为了提供即使在各种形式的使用中也具有优异的低温定影性能和耐压辊抗污染性的磁性调色剂，即使在长时间的图像再现中也保持图像不均匀的图像缺陷，并且可以实现高 级图像质量。 在具有至少含有粘合剂树脂和磁性材料的调色剂颗粒的磁性调色剂中，在120℃下制备的调色剂的主曲线中的移动因子aT120确定的活化能Ea（kJ / mol）为 设定为参考温度，并且将由150℃下制备的调色剂的主曲线中的移动因子aT150确定的活化能Eb（kJ / mol）设定为基准温度，满足式（1），并且 Ea为110kJ / mol以下：1.00＆nlE; Ea / Eb <1.20（1）。

公开(公告)号：US07935467B2

公开(公告)日：2011-05-03

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： G03G15/01

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以上且8.0μm以下的氮化硼粒子，作为无机细粉末， 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：US07923190B2

公开(公告)日：2011-04-12

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

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）＆nlE; Tm（A）+5。

公开(公告)号：US20090197192A1

公开(公告)日：2009-08-06

申请号：US12420986

申请日：2009-04-09

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

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

IPC分类号： G03G9/083

CPC分类号： G03G9/0833 ,  G03G9/0827 ,  G03G9/0835 ,  G03G9/0838 ,  G03G9/0839 ,  G03G9/08711

摘要： A magnetic toner having magnetic toner particles containing at least a binder resin and a magnetic material, wherein, in the test of dissolution level of the magnetic material, the dissolution percentages S3 (% by mass), S15 (% by mass) and S30 (% by mass), and the dissolution level proportion Sc satisfy the following expressions: 0.5≦S3≦10, 40≦S15≦80, 1.2≦Sc[=(S15−S3)/(S30−S15)]≦10; and the magnetic toner has a dielectric loss factor (tan δ) at 25° C. and at a frequency 1.0×104 Hz, within the range of from 2.0×10−3 or more to 1.5×10−2 or less.

摘要翻译： 具有至少含有粘合剂树脂和磁性材料的磁性调色剂颗粒的磁性调色剂，其中，在磁性材料的溶解水平的测试中，溶解率S3（质量％），S15（质量％）和S30（ 质量％），溶解度比例Sc满足以下表达式：0.5 <= S3 <= 10,40 <= S15 <= 80,1.2 <= Sc [=（S15-S3）/（S30-S15）] <= 10; 并且磁性调色剂在25℃和1.0×104Hz的介电损耗因子（tanδ）在2.0×10 -3以上至1.5×10 -2以下的范围内。

公开(公告)号：US20090092919A1

公开(公告)日：2009-04-09

申请号：US12330658

申请日：2008-12-09

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

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

IPC分类号： G03G9/083

CPC分类号： G03G9/0835 ,  G03G9/0804 ,  G03G9/0821 ,  G03G9/0827 ,  G03G9/0833 ,  G03G9/0839 ,  G03G9/08711 ,  G03G9/08755 ,  G03G9/08793 ,  G03G9/08795 ,  G03G9/08797

摘要： To provide a magnetic toner which has superior low-temperature fixing performance and pressure roller anti-staining properties even in various forms of use, has been kept from image defects such as image non-uniformity even during long-time image reproduction and can achieve high-level image quality. In a magnetic toner having toner particles containing at least a binder resin and a magnetic material, the activation energy Ea (kJ/mol) that is determined from a shift factor aT120 in a master curve of the toner, prepared when 120° C. is set as reference temperature, and the activation energy Eb (kJ/mol) that is determined from a shift factor aT150 in a master curve of the toner, prepared when 150° C. is set as reference temperature, satisfy Expression (1), and the Ea is 110 kJ/mol or less: 1.00≦Ea/Eb

摘要翻译： 为了提供即使在各种形式的使用中也具有优异的低温定影性能和耐压辊抗污染性的磁性调色剂，即使在长时间的图像再现中也保持图像不均匀的图像缺陷，并且可以实现高 级图像质量。 在具有至少含有粘合剂树脂和磁性材料的调色剂颗粒的磁性调色剂中，在120℃下制备的调色剂的主曲线中的移动因子aT120确定的活化能Ea（kJ / mol）为 设定为参考温度，并且将由150℃下制备的调色剂的主曲线中的移动因子aT150确定的活化能Eb（kJ / mol）设定为基准温度，满足式（1），并且 Ea为110kJ / mol以下：<？in-line-formula description =“In-Line Formulas”end =“lead”？> 1.00 <= Ea / Eb <1.20（1） 公式描述=“内联公式”end =“tail”？>

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：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。