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31. 发明授权

US07260343B2 Gear assembly used with an image forming apparatus, an optical photoconductive (OPC) unit having the same, and a method of driving the gear assembly 有权
标题翻译：与图像形成装置一起使用的齿轮组件，具有该装置的光学感光（OPC）单元以及驱动齿轮组件的方法
公开(公告)号：US07260343B2
公开(公告)日：2007-08-21
申请号：US10872494
申请日：2004-06-22
申请人： Chung-guk Baek , Yong-baek Yoo
发明人： Chung-guk Baek , Yong-baek Yoo
IPC分类号： G03G15/00
CPC分类号： G03G15/757
摘要： An organic photoconductive (OPC) unit of an image forming apparatus and a gear assembly arranged in the OPC unit. The gear assembly includes a drum gear formed on a flange of an OPC drum, a cleaning gear driven by a receiving power from the drum gear, and at least one idle gear interposed between the drum gear and the cleaning gear and transmitting the rotational force of the drum gear to the cleaning gear. Therefore, it is possible to drive a plurality of additional rollers with a single power source, and easy to connect the OPC drum with the gears when the OPC drum is fitted into the OPC unit. In addition, because the gear assembly is constructed in a compact form, it is possible to reduce the volume of the OPC unit.
摘要翻译：图像形成装置的有机光电导（OPC）单元和布置在OPC单元中的齿轮组件。齿轮组件包括形成在OPC鼓的凸缘上的鼓齿轮，由来自鼓齿轮的接收功率驱动的清洁齿轮，以及置于鼓齿轮和清洁齿轮之间的至少一个惰轮，并传递旋转力鼓齿轮到清洁齿轮。因此，可以使用单个电源驱动多个附加辊，并且当OPC鼓装配到OPC单元中时，可以容易地将OPC鼓与齿轮连接。此外，由于齿轮组件构造成紧凑的形式，因此可以减小OPC单元的体积。

32. 发明授权

US6101342A Apparatus and method for measuring developer contamination of printer 有权
标题翻译：测量打印机显影剂污染的仪器和方法
公开(公告)号：US6101342A
公开(公告)日：2000-08-08
申请号：US427725
申请日：1999-10-27
申请人： Yoon-seop Eom , Won-hyung Lee , Yong-baek Yoo
发明人： Yoon-seop Eom , Won-hyung Lee , Yong-baek Yoo
IPC分类号： G01N21/47 , G01N21/59 , G03G15/00 , G03G15/01 , G03G15/10 , G03G15/11 , G03G21/00 , G03G13/10
CPC分类号： G03G15/0121 , G01N21/59 , G03G15/104
摘要： A developer contamination measuring apparatus of a printer includes a first pipe portion having a first gap and a second pipe portion having a second gap, a light emitting unit radiating light to the first pipe portion and the second pipe portion, a light detecting unit detecting light reflected or transmitted from the first pipe portion and the second pipe portion to output first and second light receiving signals, respectively, and a developer contamination measuring unit controlling the light emitting unit, and calculating the degree of a contamination due to mixing of other developing materials with the developer from the first and the second light receiving signals. Thus, the degree of contamination of a developer mixed with other developing materials can be precisely calculated, and the developer can be replaced, when the calculated amount of contamination exceeds a predetermined allowable contamination level, to thereby prevent deterioration of print quality.
摘要翻译：打印机的显影剂污染物测量装置包括具有第一间隙的第一管部分和具有第二间隙的第二管部分，向第一管部分和第二管部分照射光的发光单元，检测光分别从第一管部分和第二管部分反射或透射以输出第一和第二光接收信号，以及控制发光单元的显影剂污染测量单元，以及计算由于其他显影材料的混合引起的污染程度来自第一和第二光接收信号的显影剂。因此，可以精确地计算出与其他显影材料混合的显影剂的污染程度，并且当计算出的污染物量超过预定的允许污染水平时可以更换显影剂，从而防止打印质量的劣化。

33. 发明授权

US5970289A Apparatus for eliminating excess ions of a developer for liquid electrophotographic printer 有权
标题翻译：用于消除液体电子照相打印机的显影剂的过量离子的装置
公开(公告)号：US5970289A
公开(公告)日：1999-10-19
申请号：US255717
申请日：1999-02-23
申请人： Yong-baek Yoo
发明人： Yong-baek Yoo
IPC分类号： G03G15/10
CPC分类号： G03G15/104
摘要： An apparatus for eliminating excess ions in a developer used for a liquid electrophotographic printer, including a photoreceptor medium, a laser scan unit for forming an electrostatic latent image by emitting a laser beam to the photoreceptor medium, and a developing unit for developing an electrostatic latent image area of the photoreceptor medium using a developer which is a mixture of a toner and a liquid carrier. The apparatus includes: a settling unit provided at one side of the developing unit for settling the toner of the developer supplied from the developing unit in a short time using an electrical force; a developer input/output controller installed between the developing unit and the settling unit for selectively controlling the input/output of the developer; and an excess ion eliminating unit for eliminating excess ions included in the developer in an upper portion of the settling unit. Thus, in the apparatus for eliminating excess ions in a developer, the developer flows sporadically in the settling tank from the developing unit during operation of a printer. The toner in the developer flowed in is settled in a short time by applying a bias voltage to upper and lower electrode plates of the settling unit. Then, the excess ions included in the developer disposed in the upper portion of the settling tank where the settlement of toner is sufficiently made are eliminated. Thus, in a liquid electrophotographic printer adopting the above apparatus according to the present invention, a decrease in the concentration of toner on an image can be prevented.
摘要翻译：一种用于消除用于液体电子照相打印机的显影剂中的过量离子的装置，包括感光体介质，用于通过向感光体介质发射激光而形成静电潜像的激光扫描单元和用于显影静电潜像的显影单元使用作为调色剂和液体载体的混合物的显影剂的感光体介质的图像区域。该装置包括：设置在显影单元的一侧的沉降单元，用于使用电力在短时间内沉淀从显影单元供应的显影剂的调色剂; 安装在显影单元和沉降单元之间的显影剂输入/输出控制器，用于选择性地控制显影剂的输入/输出; 以及过量的离子消除单元，用于消除沉淀单元的上部中包含在显影剂中的过量离子。因此，在用于消除显影剂中的过量离子的装置中，显影剂在打印机的操作期间从显影单元偶然地在沉淀槽中流动。流入的显影剂中的调色剂通过向沉降单元的上下电极板施加偏压而在短时间内稳定。然后，消除了包含在设置在沉淀池上部的显影剂中的过量离子，其中调色剂的沉降充分地形成。因此，在采用根据本发明的上述装置的液体电子照相打印机中，可以防止图像上调色剂浓度的降低。

34. 发明授权

US5828927A Method of preventing back side of paper from contamination in electrophotography printer 失效
标题翻译：防止电子照相打印机中纸张背面受污染的方法
公开(公告)号：US5828927A
公开(公告)日：1998-10-27
申请号：US874131
申请日：1997-06-12
申请人： Yong-Baek Yoo , Moon-Sik Lee , Tagoku Izumi
发明人： Yong-Baek Yoo , Moon-Sik Lee , Tagoku Izumi
IPC分类号： G03G15/00 , G03G15/16 , G03G21/00
CPC分类号： G03G15/1675 , G03G2215/1652
摘要： A back side of a paper is protected from contamination during an operation of the electrophotographic printer. A light scanning unit is warmed up as the main motor operates. This should minimize the potential difference on the surface of the photosensitive drum. A zero or a less than zero voltage is applied to its transfer roller to prevent the toner from adhering to the transfer roller before a paper reaches the transfer roller. This protects the back side of the paper from contamination due to the toner.
摘要翻译：在电子照相打印机的操作期间，纸的背面被保护免受污染。随着主电机的运行，光扫描单元被加热。这应使感光鼓表面的电位差最小化。在其转印辊上施加0或小于零的电压，以防止在纸张到达转印辊之前调色剂粘附到转印辊上。这样可以保护纸张的背面免受由于调色剂的污染。

35. 发明授权

US5758225A Method and device for supplying a variable bias voltage to a developing roller 失效
标题翻译：向显影辊供给可变偏置电压的方法和装置
公开(公告)号：US5758225A
公开(公告)日：1998-05-26
申请号：US351015
申请日：1994-12-08
申请人： Yong-Baek Yoo , Duk-Soo Kim
发明人： Yong-Baek Yoo , Duk-Soo Kim
IPC分类号： G03G15/00 , G03G15/06 , G03G15/08
CPC分类号： G03G15/065
摘要： A method and a device for supplying a developing bias voltage capable of minimizing toner consumption by reducing wasted toner during a printing operation in the image forming apparatus. The image forming apparatus comprises a photosensitive drum for forming an electrostatic latent image, a charger for providing a predetermined charging voltage to the photosensitive drum such that different bias voltages are supplied to image and non-image areas, an exposure unit for forming the electrostatic latent image on the photosensitive drum by providing image data, a developing unit for developing the electrostatic latent image formed on the photosensitive drum by toner, a transfer unit for transferring the developed toner to a printing paper, and a developing bias controller.
摘要翻译：一种用于通过在图像形成装置中的打印操作期间减少浪费的调色剂来提供能够最小化调色剂消耗的显影偏压的方法和装置。图像形成装置包括用于形成静电潜像的感光鼓，用于向感光鼓提供预定充电电压的充电器，使得向图像和非图像区域提供不同的偏置电压，用于形成静电潜像的曝光单元通过提供图像数据在感光鼓上的图像，用于通过调色剂显影形成在感光鼓上的静电潜像的显影单元，用于将显影的调色剂转印到打印纸上的转印单元和显影偏压控制器。

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