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1. 发明专利

JP5868165B2 現像装置及び現像方法有权
标题翻译：显影装置和显影方法
公开(公告)号：JP5868165B2
公开(公告)日：2016-02-24
申请号：JP2011285914
申请日：2011-12-27
申请人：キヤノン株式会社
发明人：松井崇 , 馬籠道久 , 野村祥太郎 , 大森淳彦
IPC分类号： G03G9/083 , G03G9/097 , G03G15/08
CPC分类号： G03G15/081 , G03G13/08 , G03G15/0812 , G03G15/09 , G03G9/0802 , G03G9/0815 , G03G9/0819 , G03G9/0821 , G03G9/0823 , G03G9/0833 , G03G9/0834 , G03G9/0835 , G03G9/0836

2. 发明专利

JP5367150B2 Magnetic toner 有权
公开(公告)号：JP5367150B2
公开(公告)日：2013-12-11
申请号：JP2012284877
申请日：2012-12-27
申请人：キヤノン株式会社
发明人：雄介長谷川 , 道久馬籠 , 正道上
IPC分类号： G03G9/083 , G03G9/08 , G03G9/087
CPC分类号： G03G9/0834 , G03G9/081 , G03G9/0819 , G03G9/0825 , G03G9/0827 , G03G9/083 , G03G9/0833 , G03G9/0835 , G03G9/0836 , G03G9/08755 , G03G9/08795 , G03G9/09708 , G03G9/09725
摘要： A magnetic toner contains magnetic toner particles containing a binder resin and a magnetic body, and inorganic fine particles present on the surface of the magnetic toner particles, wherein the inorganic fine particles present on the surface of the magnetic toner particles contain metal oxide fine particles, the metal oxide fine particles containing silica fine particles, and optionally containing titania fine particles and alumina fine particles, and a content of the silica fine particles being at least 85 mass% with respect to a total mass of the silica fine particles, the titania fine particles and the alumina fine particles, when a coverage ratio A(%) is a coverage ratio of the magnetic toner particles' surface by the inorganic fine particles and a coverage ratio B(%) is a coverage ratio of the magnetic toner particles' surface by the inorganic fine particles that are fixed to the magnetic toner particles' surface, the magnetic toner has a coverage ratio A and a coverage ratio B/coverage ratio A in prescribed ranges, wherein the magnetic toner has a dielectric constant epsilon' and a dielectric loss tangent in prescribed ranges.

3. 发明专利

JP5284049B2 Magnetic toner 有权
公开(公告)号：JP5284049B2
公开(公告)日：2013-09-11
申请号：JP2008290468
申请日：2008-11-13
申请人：キヤノン株式会社
发明人：正道上 , 道久馬籠 , 恵理子柳瀬 , 崇松井 , 智久佐野 , 彰榊原 , 就一廣子
IPC分类号： G03G9/083 , G03G9/08
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.

4. 发明专利

JP2013152460A Magnetic toner 有权
标题翻译：磁性墨粉
公开(公告)号：JP2013152460A
公开(公告)日：2013-08-08
申请号：JP2012284877
申请日：2012-12-27
申请人： Canon Inc , キヤノン株式会社
发明人： HASEGAWA YUSUKE , MAGOME MICHIHISA , MICHIGAMI TADASHI
IPC分类号： G03G9/083 , G03G9/08 , G03G9/087
CPC分类号： G03G9/0834 , G03G9/081 , G03G9/0819 , G03G9/0825 , G03G9/0827 , G03G9/083 , G03G9/0833 , G03G9/0835 , G03G9/0836 , G03G9/08755 , G03G9/08795 , G03G9/09708 , G03G9/09725
摘要： PROBLEM TO BE SOLVED: To provide a magnetic toner enabling stable image density regardless of use environment, and capable of suppressing fogs or stop stripes.SOLUTION: A magnetic toner comprises: magnetic toner particles including a binder resin, a release agent and a magnetic substance; and inorganic fine particles present on the surface of the magnetic toner particles. The inorganic fine particles present on the surface of the magnetic toner particles include at least one type of metal oxide fine particles selected from the group consisting of silica fine particles, titania fine particles and alumina fine particles. The silica fine particles consist 85 mass% or more of the metal oxide fine particles. In the magnetic toner, if a coverage factor by the inorganic fine particles over the surface of the magnetic toner particles is coverage factor A(%) and a coverage factor by the inorganic fine particles bonded to the surface of the magnetic toner particles is coverage factor B(%), the coverage factor A and the coverage factor B/the coverage factor A are within a predetermined range. In the magnetic toner, a dielectric constant ε' and a dielectric tangent (tanδ) are within a predetermined range.
摘要翻译：要解决的问题：提供一种无论使用环境如何，都能实现稳定的图像浓度并且能够抑制雾或停止条纹的磁性调色剂。解决方案：磁性调色剂包括：包含粘合剂树脂，脱模剂和磁性物质的磁性调色剂颗粒 ; 和存在于磁性调色剂颗粒表面上的无机细颗粒。存在于磁性调色剂颗粒表面的无机细颗粒包括选自二氧化硅微粒，二氧化钛微粒和氧化铝微粒中的至少一种金属氧化物微粒。二氧化硅微粒的组成为85质量％以上的金属氧化物微粒。在磁性调色剂中，如果磁性调色剂颗粒表面上的无机细颗粒的覆盖系数为覆盖因子A（％），并且通过与磁性调色剂颗粒的表面结合的无机细颗粒的覆盖系数为覆盖系数 B（％），覆盖因子A和覆盖因子B /覆盖因子A在预定范围内。在磁性调色剂中，介电常数＆介质正切（tanδ）在预定范围内。

5. 发明专利

JP2012068623A Toner 有权
标题翻译：碳粉
公开(公告)号：JP2012068623A
公开(公告)日：2012-04-05
申请号：JP2011172996
申请日：2011-08-08
申请人： Canon Inc , キヤノン株式会社
发明人： HIROKO SHUICHI , NAKAGAWA YOSHIHIRO , SANO TOMOHISA
IPC分类号： G03G9/083 , G03G9/087
CPC分类号： G03G9/0836 , G03G9/0804 , G03G9/0806 , G03G9/0834 , G03G9/0837 , G03G9/0839 , G03G9/08795 , G03G9/08797
摘要： PROBLEM TO BE SOLVED: To provide a magnetic toner excellent in dot reproducibility and developing property after the toner is left to stand in a high temperature and high humidity environment, and excellent in low-temperature fixability.SOLUTION: The magnetic toner includes an inorganic fine powder and magnetic toner particles containing a binder resin, a magnetic material and a release agent. The magnetic toner exhibits, in a stress relaxation measurement using a rotating plate type rheometer, a yield value (A) of 3×10(sec) or more at 25°C and a yield value (B) of 1×10(sec) or less at 25°C after heated to 80°C and then cooled to 25°C.
摘要翻译：要解决的问题：提供在高温高湿环境下将调色剂放置后的点再现性和显影性优异的磁性调色剂，并且具有优异的低温定影性。磁性调色剂包括无机细粉和含有粘合剂树脂，磁性材料和脱模剂的磁性调色剂颗粒。在使用旋转板型流变仪的应力松弛测定中，磁性调色剂在25℃下的屈服值（A）为3×10 5秒/秒（秒）以下，然后冷却至25℃。版权所有（C）2012，JPO＆INPIT

6. 发明专利

JP6341660B2 磁性トナー有权
公开(公告)号：JP6341660B2
公开(公告)日：2018-06-13
申请号：JP2013269142
申请日：2013-12-26
申请人：キヤノン株式会社
发明人：長谷川雄介 , 佐野智久 , 廣子就一 , 鈴村禎崇 , 田中啓介
IPC分类号： G03G9/083 , G03G9/08
CPC分类号： G03G9/0833 , G03G9/0821 , G03G9/0827 , G03G9/0834 , G03G9/0835 , G03G9/0836 , G03G9/08782 , G03G9/08795 , G03G9/09708 , G03G9/09725

7. 发明专利

JP5773758B2 磁性トナー有权
标题翻译：磁性色粉
公开(公告)号：JP5773758B2
公开(公告)日：2015-09-02
申请号：JP2011122750
申请日：2011-05-31
申请人：キヤノン株式会社
发明人：馬籠道久 , 松井崇 , 佐野智久 , 廣子就一 , 鈴村禎崇 , 野村祥太郎
IPC分类号： G03G9/08 , G03G9/083
CPC分类号： G03G9/0833 , G03G9/0834 , G03G9/0836 , G03G9/0837 , G03G9/0839

8. 发明专利

JP2013134434A Development apparatus, development method and magnetic toner applied in the development apparatus 有权
标题翻译：开发设备开发设备，开发方法和磁选机应用于开发设备
公开(公告)号：JP2013134434A
公开(公告)日：2013-07-08
申请号：JP2011285914
申请日：2011-12-27
申请人： Canon Inc , キヤノン株式会社
发明人： MATSUI TAKASHI , MAGOME MICHIHISA , NOMURA SHOTARO , OMORI ATSUHIKO
IPC分类号： G03G15/08 , G03G9/08 , G03G9/083 , G03G9/097
CPC分类号： G03G15/081 , G03G9/0802 , G03G9/0815 , G03G9/0819 , G03G9/0821 , G03G9/0823 , G03G9/0833 , G03G9/0834 , G03G9/0835 , G03G9/0836 , G03G13/08 , G03G15/0812 , G03G15/09
摘要： PROBLEM TO BE SOLVED: To provide a development apparatus with high development efficiency in a long-term service under high temperature high humidity environment to low temperature low humidity environment, allowing a high quality image free from density unevenness.SOLUTION: A development apparatus includes: an electrostatic latent image carrier at which an electrostatic latent image is formed, a magnetic toner that develops the electrostatic latent image, a magnetic toner carrier that carries and conveys the magnetic toner, and a regulation member that makes contact with the magnetic toner carrier to regulate the magnetic toner. In the development apparatus, a work function value on a surface of the magnetic toner carrier is a specific value. In the regulation member, a portion making contact with the magnetic toner is made of a specific material. The magnetic toner has negative chargeability, and includes magnetic toner particles including a binder resin and magnetic powder, and inorganic fine powder. Average circularity of the magnetic toner is 0.950 or larger, and a surface tension index of the magnetic toner is a specific value.
摘要翻译：要解决的问题：为了提供一种在高温高湿环境下长期服务于低温低湿度环境下具有高开发效率的开发设备，允许高质量的图像没有浓度不均匀性。解决方案：显影装置包括：形成静电潜像的静电潜像载体，显影静电潜像的磁性调色剂，携带和传送磁性调色剂的磁性调色剂载体和与磁性调色剂载体接触的调节部件磁性调色剂。在显影装置中，磁性调色剂载体的表面上的功函数值是特定值。在调节构件中，与磁性调色剂接触的部分由特定材料制成。磁性调色剂具有负带电性，并且包括包括粘合剂树脂和磁性粉末的磁性调色剂颗粒和无机细粉末。磁性调色剂的平均圆形度为0.950以上，磁性调色剂的表面张力指数为特定值。

9. 发明专利

JP2012014167A Magnetic toner 有权
标题翻译：磁性墨粉
公开(公告)号：JP2012014167A
公开(公告)日：2012-01-19
申请号：JP2011122750
申请日：2011-05-31
申请人： Canon Inc , キヤノン株式会社
发明人： MAGOME MICHIHISA , MATSUI TAKASHI , SANO TOMOHISA , HIROKO SHUICHI , SUZUMURA SADATAKA , NOMURA SHOTARO
IPC分类号： G03G9/083 , G03G9/08
CPC分类号： G03G9/0833 , G03G9/0834 , G03G9/0836 , G03G9/0837 , G03G9/0839
摘要： PROBLEM TO BE SOLVED: To provide a magnetic toner having excellent running stability in a high temperature and high humidity environment, as well as giving an image with high image density and free from ghost even when the toner is left to stand for continuous running.SOLUTION: The magnetic toner comprises magnetic toner particles containing a binder resin and a magnetic material, and an inorganic fine powder, and the toner is characterized in that: (1) the magnetic material is prepared by treating the surface of magnetic iron oxide with a silane compound; (2) when the magnetic iron oxide is dispersed in an aqueous solution of hydrochloric acid and dissolved until the dissolution proportion of the iron element reaches 5 wt.% with based on the total amount of the iron element included in the magnetic iron oxide, the amount of silicon eluted by that point of time is 0.05 mass% or more and 0.50 mass% or less based on the magnetic iron oxide; and (3) the magnetic material has a moisture adsorption of per unit area of 0.30 mg/mor less.
摘要翻译：要解决的问题：为了提供在高温高湿环境下具有优异的运行稳定性的磁性调色剂，以及即使当调色剂静置连续时也能提供高图像浓度且没有重影的图像运行。磁性调色剂包括含有粘合剂树脂和磁性材料的磁性调色剂颗粒和无机细粉，调色剂的特征在于：（1）通过处理磁性铁的表面制备磁性材料氧化物与硅烷化合物; （2）当将磁性氧化铁分散在盐酸水溶液中并溶解，直到铁元素的溶解比例基于磁性氧化铁中所含的铁元素的总量达到5重量％时，在该时间点洗脱的硅的量基于磁性氧化铁为0.05质量％以上且0.50质量％以下。和（3）磁性材料具有每单位面积的水分吸附量为0.30mg / m 2 / SP SP =“POST”> 2 以下。版权所有（C）2012，JPO＆INPIT

10. 发明专利

JP4510917B2 toner 有权
公开(公告)号：JP4510917B2
公开(公告)日：2010-07-28
申请号：JP2009019072
申请日：2009-01-30
申请人：パナソニック株式会社
发明人：正寿前田 , 典昭廣田 , 安仁湯浅
IPC分类号： G03G9/08 , G03G9/087
CPC分类号： G03G9/081 , G03G9/0819 , G03G9/0821 , G03G9/0833 , G03G9/0834 , G03G9/0835 , G03G9/0836 , G03G9/0838 , G03G9/08704 , G03G9/08728 , G03G9/08755 , G03G9/08782 , G03G9/08786 , G03G9/08793 , G03G9/08795 , G03G9/08797 , G03G9/09716 , G03G9/09725
摘要： In an electrophotographic apparatus, which forms a color image by transferring a plurality of toner images having different colors onto an image-receiving sheet so as to be stacked and fixed thereon, even in the case of carrying out an oil-less fixing process and allowing the process speed to vary within wide range, the present invention provides a binder resin, toner and an electrophotographic apparatus which make it possible to achieve both superior fixing property and anti-offset property, and consequently to form a color image with high color reproducibility and high quality. In the present invention, a toner comprising a molecular weight maximum peak in a range of molecular weights from 2 x 10 to 3 x 10 in molecular weight distribution of GPC chromatogram, and a molecular weight maximum peak or shoulder in a range from 3 x 10 to 1 x 10 , wherein said molecular weight maximum peak or shoulder located on a range of molecular weights from 3 x 10 to 1 x 10 is obtained by kneading a toner composition containing a specific binder resin containing a high molecular weight component at not less than a specific amount so that the high molecular weight component of the binder is converted into a low molecular weight component by thermal or mechanical energy exerted at the time of kneading, is provided.

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