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    • 62. 发明授权
    • Copper alloy with high strength and high conductibility, and method for manufacturing same
    • 具有高强度,高导电性的铜合金及其制造方法
    • US08652274B2
    • 2014-02-18
    • US13580954
    • 2010-12-07
    • Dae Hyun KimDong Woo LeeIn Dal KimSang Young ChoiJi Hoon LeeBo Min Jeon
    • Dae Hyun KimDong Woo LeeIn Dal KimSang Young ChoiJi Hoon LeeBo Min Jeon
    • C22C9/02C22F1/08
    • C22C9/00C22C1/02C22F1/08
    • A copper alloy includes Si to facilitate deoxidation, and can be easily manufactured even when including elements such as Cr or Sn. The copper alloy has high conductivity and high workability without negatively affecting the tensile strength. The copper alloy contains 0.2 to 0.4 wt % of Cr, 0.05 to 0.15 wt % of Sn, 0.05 to 0.15 wt % of Zn, 0.01 to 0.30 wt % of Mg, 0.03 to 0.07 wt % of Si, with the remainder being Cu and inevitable impurities. A method for manufacturing the copper alloy includes obtaining a molten metal having the described composition; obtaining an ingot; heating the ingot at a temperature of 900-1000° C. to perform a hot rolling process; cold rolling; performing a first aging process at a temperature of 400-500° C. for 2 to 8 hours; cold rolling; and performing a second aging process at a temperature of 370-450° C. for 2 to 8 hours.
    • 铜合金包括Si以促进脱氧,并且即使当包括诸如Cr或Sn的元素时也可以容易地制造。 铜合金具有高导电性和高加工性,而不会对拉伸强度产生不利影响。 铜合金含有0.2〜0.4重量%的Cr,0.05〜0.15重量%的Sn,0.05〜0.15重量%的Zn,0.01〜0.30重量%的Mg,0.03〜0.07重量%的Si,余量为Cu, 不可避免的杂质。 制造铜合金的方法包括获得具有所述组成的熔融金属; 获得锭; 在900-1000℃的温度下加热锭以进行热轧过程; 冷轧 在400-500℃的温度下进行第一次老化处理2至8小时; 冷轧 并在370-450℃的温度下进行2至8小时的第二时效处理。
    • 68. 发明授权
    • Method of producing polymerized toner
    • 生产聚合调色剂的方法
    • US08216761B2
    • 2012-07-10
    • US12671416
    • 2008-10-08
    • Wook JangChang Soon LeeWoo Cheul JeongJi Hoon Lee
    • Wook JangChang Soon LeeWoo Cheul JeongJi Hoon Lee
    • G03G5/00
    • G03G9/0806G03G9/08711G03G9/08722G03G9/09725
    • Disclosed is a method for producing a polymerized toner. In the method, a mixture of colloidal silica as an aqueous dispersant and a polyvinylpyrrolidone is used during suspension polymerization. The amount of polyvinylpyrrolidone/colloidal silica aggregates having a diameter smaller than 100 nm is also limited to 1% by weight or less, based on the total weight of all aggregates. A polymerized toner produced by the method has a volume average particle diameter (dv) of 5 to 10 μm and a volume average particle diameter/number average particle diameter ratio (dv/dp) of 1.5 or less. The polymerized toner is consumed in a small amount during printing. According to the method, the formation of emulsion particles having a size smaller than 0.5 μm is inhibited.
    • 公开了一种聚合调色剂的制造方法。 在该方法中,在悬浮聚合中使用作为水性分散剂的胶体二氧化硅与聚乙烯吡咯烷酮的混合物。 直径小于100nm的聚乙烯吡咯烷酮/胶体二氧化硅聚集体的量也以所有聚集体的总重量计为1重量%以下。 通过该方法制造的聚合调色剂的体积平均粒径(dv)为5〜10μm,体积平均粒径/数均粒径比(dv / dp)为1.5以下。 聚合调色剂在印刷过程中少量消耗。 根据该方法,抑制了尺寸小于0.5μm的乳液颗粒的形成。