Preparation of iron(II) acetate powder from a low grade magnetite
    1.
    发明授权
    Preparation of iron(II) acetate powder from a low grade magnetite 失效
    从低品位磁铁矿制备乙酸铁(II)粉末

    公开(公告)号:US07550618B2

    公开(公告)日:2009-06-23

    申请号:US11961177

    申请日:2007-12-20

    IPC分类号: C07F15/02

    CPC分类号: C07C51/412 C07C53/10

    摘要: The present invention relates to a preparation of iron(II) acetate powder from low grade magnetite and comprises the following steps: (a) adding organic acid to low grade magnetite powder to obtain iron solution; (b) adding hydroxide to the iron solution to obtain iron hydroxide; and (c) adding acetic acid to the iron hydroxide, thereby obtaining iron(II) acetate. According to the present invention, it is possible to obtain high purity iron(II) acetate using low grade magnetite and there are advantages of mass producible environmentally-friendly simple process and prevention of corrosion of facilities.

    摘要翻译: 本发明涉及一种低等级磁铁矿的乙酸铁(II)粉末制备方法,包括以下步骤:(a)将有机酸加入到低品位磁铁矿粉中,得到铁溶液; (b)向铁溶液中加入氢氧化物以得到氢氧化铁; 和(c)向氢氧化铁中加入乙酸,从而得到乙酸铁(II)。 根据本发明,可以使用低品位磁铁矿获得高纯度的乙酸铁(II),并且具有大规模生产的环保简单工艺和防止设备腐蚀的优点。

    PREPARATION OF IRON (II) ACETATE POWDER FROM A LOW GRADE MAGNETITE
    2.
    发明申请
    PREPARATION OF IRON (II) ACETATE POWDER FROM A LOW GRADE MAGNETITE 失效
    从低等级磁铁制备乙酸铵粉末(II)

    公开(公告)号:US20090105493A1

    公开(公告)日:2009-04-23

    申请号:US11961177

    申请日:2007-12-20

    IPC分类号: C07F15/02

    CPC分类号: C07C51/412 C07C53/10

    摘要: The present invention relates to a preparation of iron(II) acetate powder from low grade magnetite and comprises the following steps: (a) adding organic acid to low grade magnetite powder to obtain iron solution; (b) adding hydroxide to the iron solution to obtain iron hydroxide; and (c) adding acetic acid to the iron hydroxide, thereby obtaining iron(II) acetate.According to the present invention, it is possible to obtain high purity iron(II) acetate using low grade magnetite and there are advantages of mass producible environmentally-friendly simple process and prevention of corrosion of facilities.

    摘要翻译: 本发明涉及一种低等级磁铁矿的乙酸铁(II)粉末制备方法,包括以下步骤:(a)将有机酸加入到低品位磁铁矿粉中,得到铁溶液; (b)向铁溶液中加入氢氧化物以得到氢氧化铁; 和(c)向氢氧化铁中加入乙酸,从而得到乙酸铁(II)。 根据本发明,可以使用低品位磁铁矿获得高纯度的乙酸铁(II),并且具有大规模生产的环保简单工艺和防止设备腐蚀的优点。

    Image forming apparatus and method to detect toner thereof
    3.
    发明授权
    Image forming apparatus and method to detect toner thereof 有权
    图像形成装置及其调色剂的检测方法

    公开(公告)号:US08229313B2

    公开(公告)日:2012-07-24

    申请号:US12887711

    申请日:2010-09-22

    申请人: Han Sang Oh

    发明人: Han Sang Oh

    IPC分类号: G03G15/00

    摘要: An image forming apparatus to detect the toner density of a patch pattern formed on a photosensitive medium or a transfer belt without a deviation in light intensity includes a density sensor including a light emitter to scan light onto at least one patch pattern formed as a toner image and a light receiver to receive light reflected from the at least one patch pattern and convert the received light to an electrical signal, a switch to turn on or off the light emitter, and a controller to maintain light intensity of the light emitter within a reference range by controlling on-time and off-time of the switch.

    摘要翻译: 用于检测形成在光敏介质或转印带上的贴片图案的调色剂密度的图像形成装置,其光强度没有偏差,包括:密度传感器,包括发光体,用于将光扫描到形成为调色剂图像的至少一个贴片图案上 以及光接收器,用于接收从所述至少一个贴片图案反射的光并将所接收的光转换为电信号,开关以接通或断开所述发光体,以及控制器,以将所述发光体的光强度维持在参考值内 通过控制开关的导通时间和关断时间来实现。