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    • 11. 发明授权
    • Developing unit and developer stirring and transporting method
    • 开发单位和显影剂搅拌和运输方式
    • US07764908B2
    • 2010-07-27
    • US11479827
    • 2006-06-30
    • Takashi HatakeyamaHiroshi Murata
    • Takashi HatakeyamaHiroshi Murata
    • G03G15/08
    • G03G15/0844
    • There are provided a developing unit and a developer stirring and transporting method in which the amount of developer in the developing unit can always be kept at a specified amount without being influenced by a use environment. A developing unit 10 includes a developing roller 12, a containing unit 16 to contain the developer and having a discharge port 14 to discharge the overflown developer in its side wall, a stirring and transporting member 20 to stir and transport the developer along a passage 18 formed in the containing unit 16, and a guide unit 22 provided in the passage 18 correspondingly to the discharge port 14 of the containing unit 16 and to guide the developer transported in the passage 18 by the stirring and transporting member 20 to the discharge port 14 side.
    • 提供了显影单元和显影剂搅拌和输送方法,其中显影单元中的显影剂的量可以总是保持在指定量而不受使用环境的影响。 显影单元10包括显影辊12,容纳显影剂的容纳单元16,并且具有排出口14以排出其侧壁中的溢出显影剂,搅拌和传送构件20沿着通道18搅拌并输送显影剂 形成在容纳单元16中的引导单元22和与容纳单元16的排出口14对应的通道18中的引导单元22,并且通过搅拌输送构件20将在通道18中输送的显影剂引导到排出口14 侧。
    • 16. 发明授权
    • Aluminum nitride powder and aluminum nitride sintered compact
    • 氮化铝粉末和氮化铝烧结体
    • US07553469B2
    • 2009-06-30
    • US10590942
    • 2005-03-29
    • Takeshi GotohHiroshi MurataKohki Ichikawa
    • Takeshi GotohHiroshi MurataKohki Ichikawa
    • C01B21/072C04B35/581
    • C01B21/0722C01P2004/51C01P2004/61C01P2004/62C01P2006/80C04B35/581H05K1/0306
    • To provide an aluminum nitride powder and an aluminum nitride sintered body which satisfy both high thermal conductivity of an aluminum nitride sintered body and reduction in the shrinkage factor at the time of sintering.An aluminum nitride powder characterized in that it has local maximum values in size in regions of from 3 to 15 μm, from 0.5 to 1.5 μm and 0.3 μm or less, the proportions of particles in the respective regions are from 40 to 70%, from 25 to 40% and from 0.5 to 20% on the volume basis, and it has an oxygen amount of from 0.5 to 1.5 mass %. An aluminum nitride sintered body which is a sintered body of a powder mixture containing the above aluminum nitride powder and a sintering aid, characterized by having a thermal conductivity of at least 190 W/m·K and a shrinkage factor represented by the percentage of {(dimensions of the molded body before sintering)−(dimensions of the sintered body after sintering)}/(dimensions of the molded body before sintering) of at most 15%.
    • 提供一种氮化铝粉末和氮化铝烧结体,它们既满足氮化铝烧结体的高导热性,又降低了烧结时的收缩率。 一种氮化铝粉末,其特征在于其在3至15μm的范围内具有局部最大值,0.5至1.5μm和0.3μm或更小,各个区域中的颗粒的比例为40至70%,从 25〜40%,0.5〜20%,氧浓度为0.5〜1.5质量%。 一种氮化铝烧结体,其是含有上述氮化铝粉末和烧结助剂的粉末混合物的烧结体,其特征在于具有至少190W / mK的热导率和由{(尺寸 (烧结前的烧结体的尺寸)} /(烧结前的成型体的尺寸)为15%以下。