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    Developer for developing an electrostatic image and image forming method
    1.
    发明授权
    Developer for developing an electrostatic image and image forming method 失效
    用于显影静电图像和图像形成方法的显影剂

    公开(公告)号：US5700616A

    公开(公告)日：1997-12-23

    申请号：US594795

    申请日：1996-01-31

    申请人： Takashige Kasuya ,  Osamu Tamura ,  Hiroshi Yusa ,  Takakuni Kobori ,  Masaichiro Katada

    发明人： Takashige Kasuya ,  Osamu Tamura ,  Hiroshi Yusa ,  Takakuni Kobori ,  Masaichiro Katada

    IPC分类号： G03G9/08 ,  G03G9/097

    CPC分类号： G03G9/09716 ,  G03G9/0819 ,  G03G9/097 ,  G03G9/09725

    摘要： A developer for developing an electrostatic image has a toner which contains a particulate toner, a particulate silica A and a particulate silica B. The toner has a weight-average particle size of not larger than 12.0 .mu.m and a particle-number distribution showing not more than 50% of toner particles not larger than 4.0 .mu.m in particle size and not more than 10% of toner particles not smaller than 10.08 .mu.m in particle size, each of the toner particles having a toner composition containing at least a polymer component and a charge controlling agent. The particulate silica A is composed of silicone oil-treated silica particles and has an average particle size of not larger than 0.1 .mu.m, while the particulate silica B is composed of silicone oil-treated silica particles and has an average particle size of 0.5 to 50 .mu.m. The particulate silica B also has a particle-number distribution showing not more than 50% of silica particles not larger than 1.0 .mu.m in particle size and not more than 10% of silica particles not smaller than 100 .mu.m in particle size. Also disclosed is an image forming method which uses this developer.

    摘要翻译： 用于显影静电图像的显影剂具有含有颗粒调色剂，颗粒状二氧化硅A和颗粒状二氧化硅B的调色剂。调色剂的重均粒径不大于12.0μm，粒径分布不显示 超过50％的调色剂颗粒的粒度不大于4.0μm，并且不超过10％的不小于10.08μm的调色剂颗粒，每个调色剂颗粒具有至少含有聚合物组分的调色剂组合物 和电荷控制剂。 颗粒状二氧化硅A由硅油处理二氧化硅粒子构成，平均粒径为0.1μm以下，而硅石B由硅油处理二氧化硅粒子构成，平均粒径为0.5〜 50亩。 颗粒状二氧化硅B还具有粒径分布，粒径分布不大于粒径不大于1.0μm的二氧化硅颗粒的50％，粒径不大于100μm的二氧化硅颗粒的10％以下。 还公开了使用该显影剂的图像形成方法。

    Process cartridge
    2.
    发明授权
    Process cartridge 失效
    处理墨盒

    公开(公告)号：US6002895A

    公开(公告)日：1999-12-14

    申请号：US892913

    申请日：1997-07-15

    申请人： Takashige Kasuya ,  Hiroyuki Suematsu ,  Koichi Tomiyama ,  Hiroshi Yusa ,  Takakuni Kobori ,  Masaichiro Katada

    发明人： Takashige Kasuya ,  Hiroyuki Suematsu ,  Koichi Tomiyama ,  Hiroshi Yusa ,  Takakuni Kobori ,  Masaichiro Katada

    IPC分类号： G03G9/083 ,  G03G9/087 ,  G03G21/16

    CPC分类号： G03G9/0834 ,  G03G9/08795

    摘要： A toner is comprised of a composition containing at least a polymer component and a charge control agent. The polymer component contains substantially no tetrahydrofuran (THF)-insoluble matter. The polymer component THF-soluble has a major peak and a minor peak in the specific molecular weight regions in gel permeation chromatography (GPC). The low molecular weight component and high molecular weight component of the polymer component, each of which shows the specific molecular weight region in GPC, have the specific acid values, respectively. The difference between the acid values is in the specific range.

    摘要翻译： 调色剂由至少含有聚合物组分和电荷控制剂的组合物组成。 聚合物组分基本上不含四氢呋喃（THF） - 不溶物质。 在凝胶渗透色谱（GPC）中，可溶于THF的聚合物组分在特定分子量区域具有主峰和次峰。 聚合物组分的低分子量组分和高分子量组分分别具有特定的酸值，分别表示GPC中的特定分子量区域。 酸值之间的差异在特定范围内。

    Toner for developing electrostatic image, process-cartridge and image forming method
    5.
    发明授权
    Toner for developing electrostatic image, process-cartridge and image forming method 失效
    用于显影静电图像的墨粉，处理盒和成像方法

    公开(公告)号：US5972553A

    公开(公告)日：1999-10-26

    申请号：US736937

    申请日：1996-10-25

    申请人： Masaichiro Katada ,  Takashige Kasuya ,  Takakuni Kobori

    发明人： Masaichiro Katada ,  Takashige Kasuya ,  Takakuni Kobori

    IPC分类号： G03G9/087 ,  G03G9/09 ,  G03G9/097

    CPC分类号： G03G9/09783 ,  G03G9/08711 ,  G03G9/08782 ,  G03G9/08795 ,  G03G9/08797 ,  G03G9/091

    摘要： A toner for developing an electrostatic image is composed from a composition including: polymer components, a colorant, a wax and a charge-controlling agent. The polymer components are characterized by (a) containing substantially no THF (tetrahydrofuran)-insoluble content; (b) containing a THF-soluble content giving a GPC (gel permeation chromatography) chromatogram showing a main peak in a molecular weight region of 3.times.10.sup.3 -3.times.10.sup.4, and a sub-peak or shoulder in a molecular weight region of 1.times.10.sup.5 -3.times.10.sup.6, and (c) including a low-molecular weight polymer component having molecular weights of below 5.times.10.sup.4 on the GPC chromatogram and an acid value A.sub.VL, and a high-molecular weight polymer component having molecular weights of at least 5.times.10.sup.4 and an acid value A.sub.VH satisfying A.sub.VL >A.sub.VH. The wax has an acid value A.sub.VWax satisfying A.sub.VL >A.sub.VWax and A.sub.VWax >0 (mgKOH/g). The toner is characterized by a good combination of low-temperature fixability and anti-offset characteristic, a stable chargeability, and freeness from sleeve ghost phenomenon.

    摘要翻译： 用于显影静电图像的调色剂由包括聚合物组分，着色剂，蜡和电荷控制剂的组合物组成。 聚合物组分的特征在于（a）基本上不含THF（四氢呋喃） - 不溶物含量; （b）含有THF可溶成分，得到GPC（凝胶渗透色谱）色谱图，其显示分子量范围为3×103-3×104的主峰，分子量区域为1×105-3×10-6的亚峰或肩峰，以及 （c）包括在GPC色谱图上分子量低于5×10 4的低分子量聚合物组分和酸值AVL，以及分子量至少为5×10 4的高分子量聚合物组分和满足AVL> AVH。 蜡的酸值AVWax满足AVL> AVWax和AVWax> 0（mgKOH / g）。 调色剂的特征在于低温定影性和抗胶印特性的良好组合，稳定的带电性和来自套筒重影现象的游离度。

    Toner for developing electrostatic image, apparatus unit and image forming method
    6.
    发明授权
    Toner for developing electrostatic image, apparatus unit and image forming method 失效
    用于静电图像显影的调色剂，设备单元和成像方法

    公开(公告)号：US5712073A

    公开(公告)日：1998-01-27

    申请号：US777241

    申请日：1996-12-31

    申请人： Masaichiro Katada ,  Takashige Kasuya ,  Takakuni Kobori

    发明人： Masaichiro Katada ,  Takashige Kasuya ,  Takakuni Kobori

    IPC分类号： G03G9/08 ,  G03G9/097 ,  G03G13/22

    CPC分类号： G03G9/09733 ,  G03G9/0819 ,  G03G9/09708

    摘要： A toner for developing electrostatic images is constituted as a powdery mixture of toner particles, inorganic fine powder, resin fine particles, and metal oxide particles. The toner has a weight-average particle size of 4-12 .mu.m and contains at most 30% by number of particles having a particle size of at most 3.17 .mu.m. The inorganic fine powder has an average primary particle size of 1-50 nm. The resin fine particles have an average particle size of 0.1-2 .mu.m and a shape factor SF1 of at least 100 and below 150. The metal oxide particles have an average particle size of 0.3-3 .mu.m and a shape factor SF1 of 150-250. The toner is effective for preventing toner sticking onto and ununiform abrasion of the electrostatic image-bearing member to allow the formation of high-quality images for a long life.

    摘要翻译： 用于显影静电图像的调色剂由调色剂颗粒，无机细粉，树脂微粒和金属氧化物颗粒的粉末状混合物构成。 调色剂的重均粒径为4〜12μm，最多含有30个数量的粒径至多3.17μm的颗粒。 无机细粉末的平均一次粒径为1-50nm。 树脂微粒的平均粒径为0.1〜20μm，形状因子SF1为100以上且小于150.金属氧化物粒子的平均粒径为0.3〜3μm，形状因子SF1为150 -250。 该调色剂对于防止调色剂粘附和静电图像承载部件的不均匀磨损是有效的，以允许长时间形成高质量图像。

    Magnetic toner, image forming method and process cartridge
    7.
    发明授权
    Magnetic toner, image forming method and process cartridge 有权
    磁性调色剂，成像方法和处理盒

    公开(公告)号：US6007957A

    公开(公告)日：1999-12-28

    申请号：US159573

    申请日：1998-09-24

    申请人： Takakuni Kobori ,  Tsutomu Onuma ,  Nobuyuki Okubo ,  Masaichiro Katada ,  Masao Takano

    发明人： Takakuni Kobori ,  Tsutomu Onuma ,  Nobuyuki Okubo ,  Masaichiro Katada ,  Masao Takano

    IPC分类号： G03G9/08 ,  G03G9/083 ,  G03G9/087 ,  G03G9/097 ,  G03G13/08 ,  G03G15/08

    CPC分类号： G03G9/0834 ,  G03G9/0819 ,  G03G9/0833 ,  G03G9/0821 ,  G03G9/0827 ,  G03G9/08782 ,  G03G9/09716 ,  G03G9/09725

    摘要： A magnetic toner includes magnetic toner particles containing at least a binder resin and a magnetic iron oxide. The magnetic iron oxide contains 0.2 to 4.0% by weight of at least one metal element selected from the group consisting of Mn, Zn, Ni, Cu, Co, Cr, Cd, Al, Sn and Mg, and 0.2 to 0.8% by weight of silicon element on the basis of an iron element; the ratio (B.sub.si /A.sub.Si).times.100 of the content B.sub.Si of the silicon element present in the magnetic iron oxide up to an iron element solubility of 20% by weight to the total content A.sub.Si of the silicon element present in the magnetic iron oxide is 45 to 85%; the ratio (C.sub.si /A.sub.Si).times.100 of the content C.sub.Si of the silicon element present in the magnetic iron oxide up to an iron element solubility of 10% by weight to the total content A.sub.Si is 35 to 70%; and the magnetic toner has a weight average particle diameter of 3.5 to 10.0 .mu.m, and contains 0 to 30% by volume of magnetic toner particles having a volume particle diameter of 12.7 .mu.m or more determined from a volume distribution.

    摘要翻译： 磁性调色剂包括至少含有粘合剂树脂和磁性氧化铁的磁性调色剂颗粒。 磁性氧化铁含有0.2〜4.0重量％的选自Mn，Zn，Ni，Cu，Co，Cr，Cd，Al，Sn和Mg中的至少一种金属元素和0.2〜0.8重量％ 基于铁元素的硅元素; 存在于磁性氧化铁中的铁元素的含量BSi与铁元素溶解度相对于磁性氧化铁中存在的硅元素的总含量ASi为20重量％的比例（Bsi / ASi）×100为45 至85％; 存在于磁性氧化铁中的硅元素的含量CSi与铁素溶解度相对于总含量ASi为10重量％的比例（Csi / ASi）×100为35〜70％。 磁性调色剂的重均粒径为3.5〜10.0μm，由体积分布确定体积粒径为12.7μm以上的磁性调色剂粒子的0〜30体积％。

    Magnetic toner, magnetic developer, apparatus unit, image forming apparatus and facsimile apparatus
    8.
    发明授权
    Magnetic toner, magnetic developer, apparatus unit, image forming apparatus and facsimile apparatus 失效
    磁性调色剂，磁性显影剂，装置单元，图像形成装置和传真装置

    公开(公告)号：US5424810A

    公开(公告)日：1995-06-13

    申请号：US942840

    申请日：1992-09-10

    申请人： Koichi Tomiyama ,  Hiroyuki Suematsu ,  Masayoshi Kato ,  Hiroshi Yusa ,  Takakuni Kobori

    发明人： Koichi Tomiyama ,  Hiroyuki Suematsu ,  Masayoshi Kato ,  Hiroshi Yusa ,  Takakuni Kobori

    IPC分类号： G03G9/083 ,  G03G15/09

    CPC分类号： G03G9/0834

    摘要： A magnetic toner for electrophotography is composed from a binder resin and a silicon-containing magnetic iron oxide. The magnetic toner has a weigh-average particle size o at most 13.5 .mu.m and has a particle size distribution such that it contains o more than 50 wt, % of magnetic toner particles having a particle size of at least 12.7 .mu.m. The magnetic toner is able to show high developing performances because of richness in fine particles and is also provided with an improved environmental stability because the magnetic iron oxide used therein contains 0.5-4 wt, % silicon (based on total iron content) and has a specific silicon distribution such that the magnetic iron oxide has a total silicon content (A), a silicon content (B) dissolved together with the magnetic iron oxide when the magnetic iron oxide is dissolved up to 20 wt, % dissolution of iron, and a superficial silicon content (C), satisfying relations of B/A=44-84% and C/A=10-55%. The performances are enhanced if the magnetic toner is blended with additives such as inorganic fine powder or resin fine particles.

    摘要翻译： 用于电子照相的磁性调色剂由粘合剂树脂和含硅磁性氧化铁组成。 磁性调色剂具有至多13.5μm的重均粒径，并且具有使其含有超过50重量％的粒径至少为12.7μm的磁性调色剂颗粒的粒度分布。 磁性调色剂由于细颗粒的丰富性而能够显示高显影性能，并且由于其中使用的磁性氧化铁含有0.5-4重量％的硅（基于总铁含量）并具有改善的环境稳定性，并且具有 磁性氧化铁具有总硅含量（A），当磁性氧化铁被溶解时与磁性氧化铁溶解在一起的硅含量（B）高达20重量％，铁溶解度高， 表面硅含量（C），满足B / A = 44-84％和C / A = 10-55％的关系。 如果将磁性调色剂与无机细粉或树脂微粒等添加剂混合，则性能得到提高。

    Production of toner for developing electrostatic images
    9.
    发明授权
    Production of toner for developing electrostatic images 失效
    生产用于显影静电图像的调色剂

    公开(公告)号：US5464722A

    公开(公告)日：1995-11-07

    申请号：US176231

    申请日：1994-01-03

    申请人： Koichi Tomiyama ,  Hiroshi Yusa ,  Takakuni Kobori

    发明人： Koichi Tomiyama ,  Hiroshi Yusa ,  Takakuni Kobori

    IPC分类号： C09C1/30 ,  C09C1/36 ,  G03G9/08 ,  G03G9/087

    CPC分类号： C09C1/3081 ,  C09C1/3684 ,  G03G9/081 ,  G03G9/0817 ,  C01P2004/61

    摘要： A toner for developing electrostatic images is produced through a process including the steps of: pre-mixing binder resin particles carrying or containing inorganic fine powder to prepare a premix; melt-kneading the premix to obtain a kneaded product; cooling the kneaded product to obtain a colored resinous solid; pulverizing the colored resinous solid to obtain a pulverized product; and classifying the pulverized product to obtain toner particles. The inclusion of the resin particles carrying or containing inorganic fine powder improves the performance of the pre-mixing to provide an improved dispersion of toner materials within the product toner particles. A fine powder fraction from the classifying step can also be recycled to the premixing step. The resin particles can be toner particles per se. The inorganic fine powder may preferably be silica fine powder treated with silicone oil.

    摘要翻译： 通过包括以下步骤的方法生产用于静电图像显影的调色剂：预先混合携带或含有无机细粉末的粘合剂树脂颗粒以制备预混物; 熔融捏合预混物以获得捏合产物; 冷却捏合产物得到有色树脂固体; 粉碎着色树脂固体，得到粉碎物; 并对粉碎产物进行分级以获得调色剂颗粒。 携带或含有无机细粉末的树脂颗粒的包含改善了预混合的性能，以提供调色剂材料在产品调色剂颗粒内的改进的分散体。 来自分级步骤的细粉末部分也可以再循环到预混合步骤。 树脂颗粒本身可以是调色剂颗粒。 无机细粉末优选为用硅油处理的二氧化硅细粉末。