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    • 4. 发明授权
    • Method and apparatus for measuring the toner concentration and the
amount of electric charge of a two-component developing agent
    • 用于测量双组分显影剂的调色剂浓度和电荷量的方法和设备
    • US5834634A
    • 1998-11-10
    • US726326
    • 1996-10-03
    • Koji HondaHaruo KoyamaYusuke IshitaniNobuaki Kawano
    • Koji HondaHaruo KoyamaYusuke IshitaniNobuaki Kawano
    • G01R29/24G01N5/00G01N27/60G03G15/08G03G15/09G01N15/06G01N27/00G01N27/74
    • G03G15/0848G01N27/60G03G15/0849G01N5/00
    • A method and an apparatus for measuring the toner concentration and the amount of electric charge, capable of simultaneously measuring the toner concentration and the amount of electric charge easily and maintaining high precision using a simple device. A method of measuring the toner concentration and the amount of electric charge of a two-component developing agent, by filling a unit cell having a mesh in the lower portion thereof and a small ventilation port at the upper central portion thereof with a two-component developing agent consisting of a toner and a magnetic carrier, creating a downward stream of the developing agent at the central portion of the unit cell and an upward stream of the developing agent along the walls of the unit cell relying upon the suction through said mesh, discharging the separated toner out of the unit cell through the mesh, calculating the toner concentration from the reduction in the weight of the developing agent in the unit cell or from the amount of the discharged toner and calculating the amount of electric charge from the amount of electric charge of the unit cell.
    • 一种用于测量调色剂浓度和电荷量的方法和装置,其能够容易地同时测量调色剂浓度和电荷量并且使用简单的装置保持高精度。 一种通过在其上部填充具有网状物的单电池和在其中央部分的小通风口来测量双组分显影剂的调色剂浓度和电荷量的方法, 由调色剂和磁性载体组成的显影剂,在单元电池的中心部分产生显影剂的向下流,并且依靠通过所述网的抽吸沿着单元电池的壁向上流动显影剂, 将分离出的调色剂通过网格排出单元电池,从单元电池中显影剂重量的减少或排出的调色剂的量计算调色剂浓度,并从电量计算电荷量 单位电池的电荷。
    • 7. 发明授权
    • Mn-Zn ferrite
    • Mn-Zn铁氧体
    • US06210598B1
    • 2001-04-03
    • US09374760
    • 1999-08-16
    • Osamu KobayashiKoji HondaShunji Kawasaki
    • Osamu KobayashiKoji HondaShunji Kawasaki
    • C01G4700
    • H01F1/344C04B35/2658
    • A Mn—Zn ferrite having large electrical resistance, which can withstand use in high frequency region exceeding 1 MHz, is provided. The Mn—Zn ferrite comprises the following basic components: 44.0 to 50.0 mol % Fe2O3, 4.0 to 26.5 mol % ZnO, 0.1 to 8.0 mol % at least one member selected from the group consisting of TiO2 and SnO2, and the remainder being MnO. By the addition of TiO2 and SnO2, even if the material is sintered in air, electrical resistance of 103 times that of the conventional Mn—Zn ferrite can be obtained, and high initial permeability of 300 to 400 as estimated can be secured even at high frequency of 5 MHz.
    • 提供了具有大电阻的Mn-Zn铁氧体,其能够经受在超过1MHz的高频区域中的使用。 Mn-Zn铁氧体包含以下基本成分:44.0〜50.0mol%Fe 2 O 3,4.0〜26.5mol%ZnO,0.1〜8.0mol%选自TiO 2和SnO 2中的至少一种,余量为MnO。 通过添加TiO 2和SnO 2,即使在空气中烧结材料,也可以获得与传统的Mn-Zn铁氧体相当的103倍的电阻,即使在高的情况下也可以确保高达300〜400的初始磁导率 频率为5 MHz。