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    • 3. 发明授权
    • Method and apparatus for preventing deformation and contamination of an
OPC drum in an electrophotographic image forming apparatus
    • 用于防止电子照相成像设备中的OPC鼓的变形和污染的方法和设备
    • US5845177A
    • 1998-12-01
    • US792673
    • 1997-01-29
    • Bong-Hwan Choi
    • Bong-Hwan Choi
    • G03G15/02G03G21/00
    • G03G15/0216
    • According to this invention, the contact and separation conditions between an OPC drum and a charger roller are controlled by utilizing a tension spring, which is connected between a frame and a bearing through which the shaft of the charger roller extends, for separating a driving gear of the OPC drum and a driven gear of the charger roller by a predetermined distance in order that the OPC drum and the charger roller can be separated while the OPC drum is at standstill, in order to prevent the charger roller from deforming or contaminating the OPC drum. The force of the tension spring is overcome by the force generated by the driving gear engaging the driven gear to enable the OPC drum and the charger roller to again contact each other while the OPC drum is rotated.
    • 根据本发明,OPC鼓和充电辊之间的接触和分离条件通过利用连接在框架和轴承之间的拉力弹簧来控制,通过该轴承,充电辊的轴延伸穿过该轴承,用于分离驱动齿轮 的OPC鼓和充电辊的从动齿轮预定距离,以便OPC鼓和充电辊可以在OPC鼓静止时分离,以防止充电辊变形或污染OPC 鼓。 拉力弹簧的力通过与从动齿轮啮合的驱动齿轮产生的力来克服,以使OPC滚筒和充电辊在OPC滚筒旋转时能够再次相互接触。
    • 4. 发明授权
    • Paper discharging mechanism for an image processing apparatus
    • 用于图像处理装置的排纸机构
    • US06203007B1
    • 2001-03-20
    • US09212296
    • 1998-12-16
    • Bong-Hwan Choi
    • Bong-Hwan Choi
    • B65H2900
    • G03G15/6552B65H15/00B65H29/00B65H2301/133G03G2215/00586
    • A discharge mechanism capable of discharging a sheet facedown is advantageous to miniaturization of a duplex printing apparatus. The discharge mechanism includes a discharge roller gear engaged with a driving gear; a pair of discharge rollers rotatable by the discharge roller gear, keeping in contact with each other; a disklike support member having a shaft fixed on a same line of a shaft of the driving gear, intervening between the driving gear and the discharge rollers; a friction disk attached to the discharge roller gear, for transferring a driving force of the driving gear to the disklike support member; a compression coil spring interposed between the friction disk and the disklike support member, a shaft of a selected one of the discharge rollers passing through the compressing coil spring; and a solenoid for restricting rotation of the disklike support member when unactuated and for allowing rotation of the disklike support member when supplied with a current. The disklike support member has a pair of opposite stoppers formed at its outer circumference. Each of the stoppers has two opposite protrusions, one of which has a perpendicular outer wall, another of which has a slope.
    • 能够向下排出片材的排出机构有利于双面打印设备的小型化。 排出机构包括与驱动齿轮啮合的排出辊齿轮; 一对排出辊,通过排出辊齿轮旋转,保持彼此接触; 盘状支撑构件,其具有固定在驱动齿轮的轴的同一直线上的轴,介于驱动齿轮和排出辊之间; 附接到排出辊齿轮的摩擦盘,用于将驱动齿轮的驱动力传递到盘状支撑构件; 插入在摩擦盘和盘状支撑构件之间的压缩螺旋弹簧,通过压缩螺旋弹簧的所选排出辊中的一个排出辊的轴; 以及螺线管,用于当未致动时限制盘状支撑构件的旋转,并且当被供应电流时允许盘状支撑构件的旋转。 盘状支撑构件具有在其外圆周处形成的一对相对的止动件。 每个止动件具有两个相对的突起,其中一个具有垂直的外壁,另一个具有斜面。
    • 5. 发明授权
    • Method and arrangement for retrieving/supplying developing material in
electrophotography forming apparatus
    • 用于在电子照相成像装置中检索/供应显影材料的方法和装置
    • US6041208A
    • 2000-03-21
    • US55922
    • 1998-04-07
    • Bong-Hwan Choi
    • Bong-Hwan Choi
    • G03G15/08
    • G03G15/0808G03G15/0815G03G2215/0634
    • A method for separately retrieving used developing material on a developing roller and supplying new developing material, while balancing the retrieval of the used developing material with the supply of the new developing material in accordance with an increase in the number of papers being printed. The method is directed to retrieving and supplying developing material in an electrophotography forming apparatus which includes a developing roller, a retrieval roller and a supply roller. The method includes the steps of: rotating the retrieval roller connected to the developing roller in the same direction as the direction of rotation of the developing roller; and applying voltages to the developing roller, the retrieval roller and the supply roller in accordance with a predetermined relationship.
    • 一种用于在显影辊上分离回收使用的显影材料并供应新的显影材料的方法,同时根据所印刷的纸张数量的增加平衡所使用的显影材料的提取与新显影材料的供应。 该方法涉及在包括显影辊,取出辊和供应辊的电子照相形成装置中回收和供应显影材料。 该方法包括以下步骤:使连接到显影辊的取回辊沿着与显影辊的旋转方向相同的方向旋转; 并根据预定的关系向显影辊,取出辊和供给辊施加电压。
    • 6. 发明授权
    • Toner supplying device for developing unit
    • 显影单元调色剂供应装置
    • US5943538A
    • 1999-08-24
    • US883225
    • 1997-06-26
    • Bong-Hwan Choi
    • Bong-Hwan Choi
    • G03G15/08
    • G03G15/0808
    • A toner supplying device for a developing unit in an image forming apparatus, including a toner loading unit for loading a toner therein; a toner feed outlet installed on a lower portion of the toner loading unit; an agitator for agitating and conveying the toner to an upper portion of a feed roller, the agitator being rotatably provided to the toner loading unit; a feed bar for attaching the toner and periodically activating the toner on the upper portion of the feed roller, the feed bar being connected with a link; a developing roller for developing a latent toner image from an electrostatic latent image formed on the surface of the photosensitive drum, the developing roller and the feed roller being installed in a lower frame within the developing unit; and a blade for uniformly regulating the toner at a certain height, the blade being installed on an upper portion of the developing roller.
    • 一种用于图像形成装置中的显影单元的调色剂供应装置,包括用于在其中装载调色剂的调色剂装载单元; 调色剂供给口安装在调色剂装载单元的下部; 用于将调色剂搅拌并输送到进料辊的上部的搅拌器,搅拌器可旋转地设置到调色剂装载单元; 用于连接调色剂并周期性地启动进料辊上部上的调色剂的进料棒,进料棒与连杆连接; 用于从形成在感光鼓表面上的静电潜像显影潜像调色剂图像的显影辊,显影辊和进给辊安装在显影单元内的下框架中; 以及用于在一定高度均匀地调节调色剂的刀片,所述刀片安装在所述显影辊的上部。