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1. 发明专利

JP5921218B2 磁性トナー有权
公开(公告)号：JP5921218B2
公开(公告)日：2016-05-24
申请号：JP2012015610
申请日：2012-01-27
申请人：キヤノン株式会社
发明人：森部修平 , 山▲崎▼ 克久 , 高橋徹 , 辻本大祐 , 藤本雅己
IPC分类号： G03G9/087 , G03G9/08 , G03G9/097 , G03G9/083
CPC分类号： G03G9/0835 , G03G9/0836 , G03G9/08755 , G03G9/09708 , G03G9/09783

2. 发明专利

JP5882728B2 磁性トナー有权
公开(公告)号：JP5882728B2
公开(公告)日：2016-03-09
申请号：JP2011286202
申请日：2011-12-27
申请人：キヤノン株式会社
发明人：馬籠道久 , 長谷川雄介 , 道上正
IPC分类号： G03G9/08 , G03G9/083
CPC分类号： G03G9/0839 , G03G9/0825 , G03G9/0833 , G03G9/0835 , G03G9/09708 , G03G9/09725

3. 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

4. 发明专利

JP2015143845A 磁性トナー审中-公开
标题翻译：磁性墨粉
公开(公告)号：JP2015143845A
公开(公告)日：2015-08-06
申请号：JP2014258294
申请日：2014-12-22
申请人：キヤノン株式会社
发明人：佐野智久 , 長谷川雄介 , 廣子就一 , 鈴村禎崇 , 田中啓介
IPC分类号： G03G9/083 , G03G9/087 , G03G9/08
CPC分类号： G03G9/0839 , G03G9/0821 , G03G9/0827 , G03G9/083 , G03G9/0835 , G03G9/0836 , G03G9/08706 , G03G9/08711 , G03G9/08795 , G03G9/09708 , G03G9/09725
摘要：【課題】長期保管した際にも優れた帯電の立ち上がり性を持ちつつ、幅広い定着温度領域を有する磁性トナーを提供するものである。【解決手段】結着樹脂および磁性体を含有する磁性トナー粒子と、無機微粒子と、を含有する磁性トナーであって、該磁性トナーの平均円形度が0.955以上であり、無機微粒子を、磁性トナー粒子への固着強度に応じて、固着強度の弱い順に、弱固着無機微粒子、中固着無機微粒子、強固着無機微粒子とした場合、弱固着無機微粒子の含有量、中固着無機微粒子の弱固着無機微粒子に対する比、および、該磁性トナーの表面の該強固着無機微粒子による被覆率Xが、特定の範囲である磁性トナー。【選択図】図1
摘要翻译：要解决的问题：提供即使在长期储存后具有优异的电荷上升特性并且具有宽的定影温度区域的磁性调色剂。解决方案：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，以及无机精细颗粒，平均圆形度为0.955以上。当无机细颗粒基于其对磁性调色剂颗粒的固定强度并以固定强度的升序被分类为低固定强度无机细颗粒，中固定强度无机细颗粒和高定影强度无机细颗粒时，低固定强度无机细颗粒的含量，中等固定强度无机细颗粒与低固定强度无机细颗粒的比例以及磁性调色剂表面上的高定影强度无机细颗粒的覆盖率X在具体范围。

5. 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.

6. 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.

7. 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。

8. 发明专利

JP2013134447A Magnetic toner 有权
标题翻译：磁性墨粉
公开(公告)号：JP2013134447A
公开(公告)日：2013-07-08
申请号：JP2011286202
申请日：2011-12-27
申请人： Canon Inc , キヤノン株式会社
发明人： MAGOME MICHIHISA , HASEGAWA YUSUKE , MICHIGAMI TADASHI
IPC分类号： G03G9/083 , G03G9/08
CPC分类号： G03G9/0839 , G03G9/0825 , G03G9/0833 , G03G9/0835 , G03G9/09708 , G03G9/09725
摘要： PROBLEM TO BE SOLVED: To provide a magnetic toner having high image density and allowing an image without generating a ghost image.SOLUTION: A magnetic toner includes: magnetic toner particles including a binder resin and a magnetic substance; and inorganic fine particles present on magnetic toner particle surfaces. In the magnetic toner: inorganic fine particles include at least one type of metal oxide fine particles selected from a group consisting of silica fine particles, titania fine particles and alumina fine particles; 85 mass% or more of the metal oxide fine particles are silica fine particles. If a coverage factor of the magnetic toner particle surfaces with the inorganic fine particles is defined as coverage factor A and a coverage factor by inorganic fine particles fixed to magnetic toner particle surfaces is defined as coverage factor B, the coverage factor A is 45.0%-70.0%, a variation coefficient of the coverage factor A is less than 10.0%, a ratio of the coverage factor B to the coverage factor A is 0.50-0.85, and compressibility of the magnetic toner is 38%-42%.
摘要翻译：要解决的问题：提供具有高图像浓度并允许图像而不产生幻像的磁性调色剂。解决方案：磁性调色剂包括：包含粘合剂树脂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。在磁性调色剂中：无机细颗粒包括选自由二氧化硅微粒，二氧化钛微粒和氧化铝微粒组成的组中的至少一种金属氧化物微粒; 金属氧化物微粒的85质量％以上为二氧化硅微粒。如果磁性调色剂颗粒表面与无机细颗粒的覆盖系数定义为覆盖因子A，并且通过固定在磁性调色剂颗粒表面上的无机细颗粒的覆盖系数定义为覆盖因子B，覆盖系数A为45.0％ - 70.0％，覆盖因子A的变化系数小于10.0％，覆盖因子B与覆盖因子A的比例为0.50-0.85，磁性调色剂的压缩性为38％-42％。

9. 发明专利

JP4578295B2 An image forming method using a two-component developer magnetic toner and developer 有权
公开(公告)号：JP4578295B2
公开(公告)日：2010-11-10
申请号：JP2005080673
申请日：2005-03-18
申请人：京セラミタ株式会社
发明人：幸則中山 , 甲介佐藤 , 浩三寺本 , 浩司水畑
IPC分类号： G03G9/083 , G03G9/10
CPC分类号： G03G9/0837 , G03G9/0819 , G03G9/0827 , G03G9/0835 , G03G9/0838
摘要： The developer comprises magnetic toners and the magnetic carriers which forms magnetic ears on the surface of the developing roller. The magnetic toner is of an average particle size 0.01 mum through 0.50 mum and is of octahedron shape that is a convex polyhedron surrounded by eight triangles as a basis, each of the vertexes edges of the octahedron shape toner being in a curved surface shape and having a portion that can be taken as a straight line on the outer periphery of a projected image of the octahedron shape toner. The magnetic ears are electrically charged by the friction between the magnetic toner and the magnetic carriers and the magnetic ears on the developing roller are carried to the electrostatic latent image on the photoreceptor. The latent image is developed by the magnetic toners in the magnetic ears, in a small gap between the developing roller and the photoreceptor.

10. 发明专利

JP3953964B2 The toner and fixing method 有权
公开(公告)号：JP3953964B2
公开(公告)日：2007-08-08
申请号：JP2003032687
申请日：2003-02-10
申请人：株式会社リコー
发明人：信一倉本 , 冰朱 , 豊志澤田 , 桂子白石 , 将志長山 , 久美長谷川 , 三夫青木
IPC分类号： G03G9/08 , G03G9/09 , G03G9/083 , G03G9/087 , G03G15/20
CPC分类号： G03G9/0835 , G03G9/0831 , G03G9/0832 , G03G9/08755 , G03G9/08795 , G03G9/08797 , G03G9/0902
摘要： A toner including a binder resin including a crystalline polyester and a non-crystalline resin; a release agent; and a black metal-containing material having a saturation magnetization not greater than 50 emu/g. A toner container containing the toner. A fixing method including passing a support with the toner image thereon through a nip between two cylindrical rollers while applying a pressure not greater than 1x10 5 Pa to the two cylindrical rollers, wherein one of the cylindrical rollers which contacts the toner image has a thickness not greater than 1.0 mm. An image forming method including developing an electrostatic image with the toner to form a toner image; transferring the toner image onto a receiving material; and fixing the toner image by the fixing method mentioned above. A process cartridge including an image bearing member and a developing device using the toner.

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