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    • 1. 发明授权
    • Method for the formation of multicolor images
    • 形成多色图像的方法
    • US4828951A
    • 1989-05-09
    • US168410
    • 1988-03-15
    • Tadashi KanekoYoshiaki KobayashiMitsutaka Arai
    • Tadashi KanekoYoshiaki KobayashiMitsutaka Arai
    • G03G9/08G03G9/097G03G13/01G03G15/01
    • G03G9/09725G03G13/013G03G9/097G03G9/09708
    • An image forming method by the electrophotographic process is disclosed. The image forming method comprises the steps of forming a plurality of toner images different in color on an image carrying member by repeating the developing of the electrostatic latent image on the image carrying member with developers containing both toner and carrier, and transferring said plurality of the toner images at a time onto a receiving material, in which the toner to be provided for at least the initial toner image formation is mixed with 0.2 to 2% by weight of metal oxide particles having a BET specific surface area determined by nitrogen adsorption of from 30 m.sup.2 /g to 60 m.sup.2 /g. The method provides clear multicolor images free from any deterioration in the resolution due to transfer doubling trouble as well as in the image quality due to transfer-off spots.
    • 公开了一种通过电子照相方法形成图像的方法。 图像形成方法包括以下步骤:通过重复图像承载构件上的静电潜像的显影而使包含调色剂和载体的显影剂重复地在图像承载构件上形成不同颜色的多个调色剂图像,并且转移所述多个 将一次调色剂图像一次接收到至少将初始调色剂图像形成用的调色剂与0.2至2重量%的具有通过氮吸附确定的BET比表面积的金属氧化物颗粒混合的接收材料上 30 m2 / g至60 m2 / g。 该方法提供了清晰的多色图像,由于转印倍增问题以及由于转印点的图像质量而无法降低分辨率。
    • 2. 发明授权
    • Color toner
    • 彩色墨粉
    • US5143809A
    • 1992-09-01
    • US625963
    • 1990-12-11
    • Tadashi KanekoShoichi NakanoYoshiaki KobayashiTakahira Kasuya
    • Tadashi KanekoShoichi NakanoYoshiaki KobayashiTakahira Kasuya
    • C08G63/668G03G9/087G03G9/097
    • C08G63/668G03G9/08755G03G9/09783
    • There is disclosed a color toner having an excellent fixability, an improved antioffset property and a superior transparency of an image fixed on an OHP sheet. The color toner comprises 100 parts by weight of a polyester resin prepared by condensation polymerization of the following components (1) and (2), 0.1 to 5 parts by weight of a zinc complex of an aromatic oxycarboxylic acid which may have a substituent, and 1 to 20 parts by weight of a colorant;Component (1): diol represented by the following Formula (a): ##STR1## wherein R represents an ethylene group or a propylene group; and X and Y each are an integer, provided that the sum of X and Y is 2 to 7 in average:Component (2): a mixture of a divalent acid component comprising a divalent carboxylic acid having an aliphatic hydrocarbon side chain of 3 to 22 carbon atoms or a lower alkyl ester thereof, and a trivalent acid component comprising a trivalent carboxylic acid or an anhydride thereof in a ratio of 10 to 50 mole % of the total acid components.
    • 公开了固定在OHP片上的图像具有优异的定影性,改进的抗折射特性和优异透明度的彩色调色剂。 彩色调色剂包含100重量份由以下组分(1)和(2)缩聚制备的聚酯树脂,0.1至5重量份可具有取代基的芳族羟基羧酸锌络合物,以及 1至20份重量的着色剂; 组分(1):由下式(a)表示的二醇:其中R表示亚乙基或亚丙基; X和Y各自为整数,条件是X和Y的和平均为2〜7成分:成分(2):包含脂族烃侧链的2价羧酸的2价酸成分的混合物为3〜 22个碳原子或其低级烷基酯,和包含三价羧酸或其酸酐的三价酸组分,其总酸成分的比例为10〜50摩尔%。
    • 4. 发明授权
    • Carrier and two-component developer composed of the carrier
    • 载体和双组分显影剂由载体组成
    • US08148041B2
    • 2012-04-03
    • US13012127
    • 2011-01-24
    • Makoto KobayashiYoshiaki KobayashiYoshiyasu Matsumoto
    • Makoto KobayashiYoshiaki KobayashiYoshiyasu Matsumoto
    • G03G9/107
    • G03G9/107G03G9/1075G03G9/113G03G9/1131G03G9/1133
    • An objective is to provide a carrier exhibiting stable charge providing ability in which sufficient charge can be provided to toner having a small particle diameter, and no image contamination such as fog caused by toner scattering via lack of electrification is generated. Another objective is to provide a carrier capable of maintaining a charging level of no interference for image formation even under the image forming condition at which a charging level for printing a number of prints continuously is difficult to be maintained. Disclosed is a carrier comprising a core particle made of ferrite possessing Mg and coated thereon, a resin, wherein the core particle has a ratio of the number of irregular-shaped core particles of at most 5%, based on the total number of core particles, and a surface of the core particle has grains having a maximum grain diameter of 2-5 μm.
    • 目的是提供一种具有稳定的电荷提供能力的载体,其中可以向具有小粒径的调色剂提供足够的电荷,并且不会产生由于通过不起电而由调色剂飞散引起的图像污染。 另一个目标是提供一种即使在连续打印多个打印件的打印水平难以维持的图像形成条件下,也能够保持对图像形成无干扰的充电水平的载体。 公开了一种载体,其包含由具有Mg并且涂覆在其上的铁氧体制成的核心颗粒,树脂,其中核心颗粒具有至多5%的不规则核心颗粒的数量的比率,基于芯颗粒的总数 ,核粒子的表面具有最大粒径为2-5μm的粒子。