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1. 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。

2. 发明授权

US5812904A Image forming apparatus and method for controlling charging potential differently between image forming area and non-image forming area of photosensitive drum 失效
标题翻译：用于在感光鼓的图像形成区域和非图像形成区域之间不同地控制充电电位的图像形成装置和方法
公开(公告)号：US5812904A
公开(公告)日：1998-09-22
申请号：US714759
申请日：1996-09-16
申请人： Chang-Soo Rhee , Yong-Baek Yoo
发明人： Chang-Soo Rhee , Yong-Baek Yoo
IPC分类号： G03G15/02
CPC分类号： G03G15/0266
摘要： A system for controlling a potential of a photosensitive drum for a laser beam printer having a photosensitive drum on which an electrostatic image is formed, a charger for applying voltages differentially to an image forming area where the photosensitive drum contacts a recording medium and to a non-image forming area where the photosensitive drum does not contact the recording medium to charge the outer surface of the photosensitive drum to a given polarity, a light scanner unit for forming an electrostatic latent image on the drum corresponding to image data, a developing unit for applying toner onto the photosensitive drum during the image forming area and a transfer charger for transferring a toner image formed on the drum to the recording medium. The system includes a potential controlling unit for applying a first charging potential to the photosensitive drum during the image forming area to charge the photosensitive drum to a given voltage for development, and for applying a second charging potential to the photosensitive drum during the non-image forming area.
摘要翻译：一种用于控制具有形成有静电图像的感光鼓的激光束打印机的感光鼓的电位的系统，用于向感光鼓接触记录介质的图像形成区域施加电压的充电器，图像形成区域，其中感光鼓不接触记录介质以将感光鼓的外表面充电到给定的极性;光扫描器单元，用于在对应于图像数据的滚筒上形成静电潜像;显影单元，在图像形成区域期间将调色剂施加到感光鼓上，以及转印充电器，用于将形成在鼓上的调色剂图像转印到记录介质上。该系统包括电位控制单元，用于在图像形成区域期间向感光鼓施加第一充电电位，以将感光鼓充电至给定的显影电压，并且在非图像期间向感光鼓施加第二充电电位形成区域。

3. 发明授权

US5933685A Apparatus for detecting concentration of developer by measurement of optical transmissivity 失效
标题翻译：用于通过测量透光率来检测显影剂浓度的装置
公开(公告)号：US5933685A
公开(公告)日：1999-08-03
申请号：US72693
申请日：1998-05-06
申请人： Yong-Baek Yoo
发明人： Yong-Baek Yoo
IPC分类号： G03G15/11 , G01N21/59 , G03G15/10 , G01N21/47
CPC分类号： G03G15/105 , G01N21/59 , G03G2215/0626
摘要： A developer concentration detection apparatus is provided, which includes a base member in which a developer accommodation space is formed, an electrode plate member installed in the base member so that a toner included in a developer in the developer accommodation space is electrically charged, a hollow transparent conductive tube which is rotatably supported in the state where at least part thereof is submerged in the developer in the developer accommodation space and the surface thereof can be charged, a light emitting element installed in the transparent conductive tube, and a light receiving element installed spaced from the surface of the transparent conductive tube, for detecting light generated from the light emitting element. The developer concentration detection apparatus can detect measurement of the developer concentration, thereby providing the result of assuring an optimal printing quality. Also, reliability and accuracy of the measurement is guaranteed since the developer concentration is measured by directly detecting the amount of the particles of the toner included in the developer.
摘要翻译：提供了一种显影剂浓度检测装置，其包括其中形成有显影剂容纳空间的基底构件，安装在基底构件中的电极板构件，使得包含在显影剂容纳空间中的显影剂中的调色剂带电，透明导电管在其至少一部分被浸没在显影剂容纳空间中的显影剂及其表面中的状态下被可旋转地支撑，可以将安装在透明导电管中的发光元件和安装在透明导电管中的光接收元件与透明导电管的表面间隔开，用于检测从发光元件产生的光。显影剂浓度检测装置可以检测显影剂浓度的测量，从而提供确保最佳印刷质量的结果。此外，由于通过直接检测包含在显影剂中的调色剂颗粒的量来测量显影剂浓度，因此保证测量的可靠性和准确性。

4. 发明授权

US5666596A Process cartridge of an image forming device 失效
标题翻译：图像形成装置的处理盒
公开(公告)号：US5666596A
公开(公告)日：1997-09-09
申请号：US694389
申请日：1996-09-16
申请人： Yong-Baek Yoo
发明人： Yong-Baek Yoo
IPC分类号： G03G15/00 , G03G21/18
CPC分类号： G03G21/1814 , G03G21/1647 , G03G21/1857 , G03G2215/021 , G03G2221/1642 , G03G2221/1657
摘要： A process cartridge of an image forming device in which a driving gear for driving a charging roller and a transfer roller is not utilized. The process cartridge of an image forming device, comprising: a developing unit having a photosensitive drum and a charging roller for charging the photosensitive drum; a driving gear to which driving force is delivered, the driving gear providing a driving force for rotating the photosensitive drum; and friction portions for driving the charging roller and transfer roller, the friction portions being provided on opposite sides of an outer circumferential surface of the photosensitive drum, wherein the charging roller and the photosensitive drum are provided to be in contact with each other and the transfer roller and the photosensitive drum are provided to be in contact with each other, so that the charging roller and transfer roller are driven by a friction force caused by rotation of the photosensitive drum.
摘要翻译：图像形成装置的处理盒，其中不使用用于驱动充电辊和转印辊的驱动齿轮。一种图像形成装置的处理盒，包括：具有感光鼓的显影单元和用于对感光鼓充电的充电辊; 传动驱动力的驱动齿轮，所述驱动齿轮提供用于旋转所述感光鼓的驱动力; 以及用于驱动充电辊和转印辊的摩擦部分，摩擦部分设置在感光鼓的外周表面的相对侧上，其中充电辊和感光鼓被设置成彼此接触并且转印辊和感光鼓被设置成彼此接触，使得充电辊和转印辊由由感光鼓的旋转引起的摩擦力驱动。

5. 发明授权

US6091914A Liquid developer concentration measuring apparatus of an image processor 有权
标题翻译：图像处理器的液体显影剂浓度测量装置
公开(公告)号：US6091914A
公开(公告)日：2000-07-18
申请号：US306889
申请日：1999-05-07
申请人： Yong-Baek Yoo
发明人： Yong-Baek Yoo
IPC分类号： G03G15/10
CPC分类号： G03G15/105
摘要： An apparatus for measuring the concentration of a liquid developer of an image processor includes: a housing; a rotating roller disposed inside the housing, a driving source for rotating the roller; a developer supplier for supplying the developer to the roller such that a developer film can be formed as the roller rotates, and a sensor for sensing an amount of light transmitted through the developer film by directing light to the developer film and receiving the light transmitted through the developer film.
摘要翻译：一种用于测量图像处理器的液体显影剂浓度的装置，包括：壳体; 设置在壳体内部的旋转辊，用于旋转辊的驱动源; 用于将显影剂供应到辊的显影剂供应商，使得当辊旋转时可以形成显影剂膜;以及传感器，用于通过将光引导到显影剂膜并且接收透射的光，来感测透过显影剂膜的光量开发者电影。

6. 发明授权

US5812905A Method and apparatus for controlling a charge voltage of an OPC drum to be an optimum value 失效
标题翻译：用于将OPC鼓的充电电压控制为最佳值的方法和装置
公开(公告)号：US5812905A
公开(公告)日：1998-09-22
申请号：US818889
申请日：1997-03-17
申请人： Yong-Baek Yoo
发明人： Yong-Baek Yoo
IPC分类号： G03G15/02
CPC分类号： G03G15/0266 , G03G2215/021
摘要： A method and apparatus for controlling a charge voltage of an organic photoconductive (OPC) drum in an electrophotographic image forming device, which are to improve the quality of the image by charging the OPC drum surface uniformly independent of voltage deviation between the OPC drum and the charging roller, the ambient temperature and humidity of the image forming device. This apparatus is comprised of a detector for measuring a ground current flowing through a ground of the OPC drum, a comparator for comparing the measured ground current and preset voltage-related information, and a controller for deriving an optimum voltage for charging the OPC drum based on the resultant of comparison.
摘要翻译：一种用于控制电子照相图像形成装置中的有机光电导（OPC）鼓的充电电压的方法和装置，其通过对OPC鼓表面进行充电来提高图像的质量，而不受OPC鼓和充电辊，图像形成装置的环境温度和湿度。该装置包括用于测量流过OPC鼓的地面的接地电流的检测器，用于比较测量的接地电流和预设的电压相关信息的比较器，以及用于导出用于对OPC鼓进行充电的最佳电压的控制器对比结果。

7. 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。

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