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    • 5. 发明授权
    • Toner and image forming method
    • 调色剂和成像方法
    • US06440630B2
    • 2002-08-27
    • US09808296
    • 2001-03-14
    • Kazuya IsobeYoshiaki KobayashiYoshiki NishimoriMeizo ShiroseHiroshi Yamazaki
    • Kazuya IsobeYoshiaki KobayashiYoshiki NishimoriMeizo ShiroseHiroshi Yamazaki
    • G03G1320
    • G03G13/20G03G9/0804G03G15/2057G03G15/206
    • A toner image forming method by developing an electrostatic latent image on a photoreceptor to form a toner image employing a developer comprising toner, transferring the toner image onto an image forming material, and fixing the transferred toner image employing a fixing unit, is disclosed. The fixing unit is comprised of a heating roller and a pressure roller which is brought into contact with said heating roller, the heating roller is constituted of a cylinder having an interior diameter of from 10 to 70 mm and a wall thickness of from 0.1 to 2 mm comprised of a metal or a metal alloy, and a heating member being incorporated in the interior, a surface of the cylinder being covered with a fluorine resin at a thickness of from 10 to 500 &mgr;m, the pressure roller is constituted of a metal cylinder whose surface is covered with an elastic material having an Asker hardness C of less than 80 degrees at a thickness of 0.1 30 mm, and the toner is comprised of a binder resin, a colorant, and a releasing agent, and is obtained by salting out/fusing resin particles comprising releasing agents in binding resins and colorant particles.
    • 一种调色剂图像形成方法,通过在感光体上显影静电潜像以形成使用包含调色剂的显影剂的调色剂图像,将调色剂图像转印到图像形成材料上,以及使用定影单元固定转印的调色剂图像。 固定单元由加热辊和与所述加热辊接触的加压辊组成,加热辊由内径为10至70mm,壁厚为0.1至2mm的圆筒构成 由金属或金属合金构成的加热构件和内部的加热构件,圆筒的表面被氟树脂覆盖,厚度为10〜500μm,加压辊由金属筒构成, 表面用厚度为0.1±30mm的Asker硬度C小于80度的弹性材料覆盖,调色剂由粘合剂树脂,着色剂和 脱模剂,并且通过将粘合树脂和着色剂颗粒中包含脱模剂的树脂颗粒盐化/熔融而获得。
    • 7. 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。