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    • 6. 发明授权
    • Black magnetic toner
    • 黑色磁性墨粉
    • US06638675B2
    • 2003-10-28
    • US10141959
    • 2002-05-10
    • Kazuyuki HayashiHiroko MoriiYasuyuki TanakaSeiji Ishitani
    • Kazuyuki HayashiHiroko MoriiYasuyuki TanakaSeiji Ishitani
    • G03G9083
    • G03G9/083G03G9/0833G03G9/0836G03G9/0839G03G9/08773G03G9/0902G03G9/0904Y10S428/90Y10T428/2991Y10T428/2995Y10T428/2998
    • Black magnetic toner comprising: a binder resin, and black magnetic composite particles comprising: magnetic iron oxide particles having an average particle diameter of 0.055 to 0.95 &mgr;m; a coating layer formed on the surface of said magnetic iron oxide particles, comprising at least one organosilicon compound selected from the group consisting of: (1) organosilane compounds obtainable from alkoxysilane compounds, (2) polysiloxanes or modified polysiloxanes, and (3) fluoroalkyl organosilane compounds obtainable from fluoroalkylsilane compounds; and a carbon black coat formed on said coating layer comprising said organosilicon compound, in an amount of 1 to 25 parts by weight based on 100 parts by weight of said magnetic iron oxide particles. Such a black magnetic toner can be free from being deteriorated in electric resistance due to the existence of the carbon black coat, and as a result, is suitable as a high-resistance or insulated magnetic toner.
    • 黑色磁性调色剂,其包含:粘合剂树脂和黑色磁性复合颗粒,其包含平均粒径为0.055至0.95μm的磁性氧化铁颗粒;形成在所述磁性氧化铁颗粒的表面上的涂层,其包含至少一种有机硅化合物 选自:(1)可从烷氧基硅烷化合物获得的有机硅烷化合物,(2)聚硅氧烷或改性聚硅氧烷,和(3)可从氟代烷基硅烷化合物获得的氟烷基有机硅烷化合物; 和在包含所述有机硅化合物的所述涂层上形成的炭黑涂层,其量为基于100重量份的所述磁性氧化铁颗粒为1至25重量份。这样的黑色磁性调色剂可以没有劣化的电 由于存在炭黑涂层而导致的电阻,因此适合作为高电阻或绝缘磁性调色剂。
    • 7. 发明授权
    • Black magnetic composite particles for a black magnetic toner
    • 用于黑色磁性调色剂的黑色磁性复合颗粒
    • US06416864B1
    • 2002-07-09
    • US09541725
    • 2000-04-03
    • Kazuyuki HayashiHiroko MoriiYasuyuki TanakaSeiji Ishitani
    • Kazuyuki HayashiHiroko MoriiYasuyuki TanakaSeiji Ishitani
    • B32B516
    • G03G9/083G03G9/0833G03G9/0836G03G9/0839G03G9/08773G03G9/0902G03G9/0904Y10S428/90Y10T428/2991Y10T428/2995Y10T428/2998
    • Black magnetic toner comprising: a binder resin, and black magnetic composite particles comprising: magnetic iron oxide particles having an average particle diameter of 0.055 to 0.95 &mgr;m; a coating layer formed on the surface of said magnetic iron oxide particles, comprising at least one organosilicon compound selected from the group consisting of: (1) organosilane compounds obtainable from alkoxysilane compounds, (2) polysiloxanes or modified polysiloxanes, and (3) fluoroalkyl organosilane compounds obtainable from fluoroalkylsilane compounds; and a carbon black coat formed on said coating layer comprising said organosilicon compound, in an amount of 1 to 25 parts by weight based on 100 parts by weight of said magnetic iron oxide particles. Such a black magnetic toner can be free from being deteriorated in electric resistance due to the existence of the carbon black coat, and as a result, is suitable as a high-resistance or insulated magnetic toner.
    • 黑色磁性调色剂,其包含:粘合剂树脂和黑色磁性复合颗粒,其包含平均粒径为0.055至0.95μm的磁性氧化铁颗粒;形成在所述磁性氧化铁颗粒的表面上的涂层,其包含至少一种有机硅化合物 选自:(1)可从烷氧基硅烷化合物获得的有机硅烷化合物,(2)聚硅氧烷或改性聚硅氧烷,和(3)可从氟代烷基硅烷化合物获得的氟烷基有机硅烷化合物; 和在包含所述有机硅化合物的所述涂层上形成的炭黑涂层,其量为基于100重量份的所述磁性氧化铁颗粒为1至25重量份。这样的黑色磁性调色剂可以没有劣化的电 由于存在炭黑涂层而导致的电阻,因此适合作为高电阻或绝缘磁性调色剂。
    • 8. 发明授权
    • Black non-magnetic composite particles for black toner and black toner
using the same
    • 用于黑色调色剂的黑色非磁性复合颗粒和使用其的黑色调色剂
    • US6130017A
    • 2000-10-10
    • US293057
    • 1999-04-16
    • Kazuyuki HayashiSeiji IshitaniYasuyuki TanakaHiroko Morii
    • Kazuyuki HayashiSeiji IshitaniYasuyuki TanakaHiroko Morii
    • G03G9/087G03G9/09
    • G03G9/08773G03G9/0902Y10T428/2991
    • Black non-magnetic composite particles for black toner according to the present invention, comprise:black hematite particles or black iron oxide hydroxide particles as core particles;fine particles which are adhered or exist on at least a part of the surface of each magnetite particle, and comprise oxides, oxide hydroxides or oxides and oxide hydroxides composed of at least one element selected from the group consisting of Si, Zr, Ti, Al and Ce; anda methyl hydrogen polysiloxane coating layer formed on said fine particles or said fine particles and the exposed surface of the magnetite particle,the average particle size of said black non-magnetic composite particles being 0.08 to 1.0 .mu.m.Such black non-magnetic composite particles are suitable for a black toner which can exhibit not only an excellent flowability but also a high volume resistivity.
    • 本发明黑色调色剂黑色非磁性复合颗粒包括黑色赤铁矿颗粒或黑色铁氧化物氢氧化物颗粒作为核心颗粒; 附着或存在于每个磁铁矿颗粒的表面的至少一部分上的细颗粒,并且包含由选自Si,Zr,Ti,Al中的至少一种元素组成的氧化物,氧化物氢氧化物或氧化物和氧化物氢氧化物 和Ce; 和形成在所述微粒或所述微粒上的甲基氢聚硅氧烷涂层和所述磁铁矿粒子的露出面,所述黑色非磁性复合粒子的平均粒径为0.08〜1.0μm。 这种黑色非磁性复合颗粒适用于黑色调色剂,其不仅具有优异的流动性,而且还具有高的体积电阻率。