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1. 发明授权

US07308221B2 High developing voltage supply apparatus 有权
标题翻译：高开发电压供电装置
公开(公告)号：US07308221B2
公开(公告)日：2007-12-11
申请号：US10600468
申请日：2003-06-23
申请人： Seung-deog An , Min-seon Kim , Woo-jung Shim
发明人： Seung-deog An , Min-seon Kim , Woo-jung Shim
IPC分类号： G03G15/08
CPC分类号： G03G15/065 , G03G2215/018
摘要： A high developing voltage supply apparatus includes solenoid power switches, and a high developing voltage driver selectively outputting a solenoid driving signal to close one of the solenoid power switches to electrically close a corresponding mechanical contact, applying a high developing voltage to one of color development rollers corresponding to the mechanical contact closed and Kased on an image to be printed. A high developing voltage supply supplies the high developing voltage to developing roll shafts of the other color development rollers to stabilize potentials of the developing roll shafts, or, in the alternative, the high developing voltage supply apparatus may include a voltage supply supplying a self-biased voltage to the other color development rollers using the high developing voltage formed with a DC voltage VDC and an AC voltage VAC superimposed.
摘要翻译：高显影电压供应装置包括螺线管电源开关和高显影电压驱动器，其选择性地输出电磁线圈驱动信号以闭合一个螺线管电源开关以电闭合对应的机械接触，将高显影电压施加到一个显色辊对应于机械触点闭合并卡在要打印的图像上。高显影电压电源将高显影电压提供给其它显色辊的显影辊轴，以稳定显影辊轴的电位，或者替代地，高显影电压供应装置可包括供应自显影辊的电压源，使用形成有直流电压V DC和AC AC V AC AC的高显影电压将偏压的电压施加到其它显色辊。

2. 发明授权

US06842591B2 Method of controlling charging potential of conductive roller in printer and apparatus therefor 有权
标题翻译：控制打印机中导电辊充电电位的方法及其设备
公开(公告)号：US06842591B2
公开(公告)日：2005-01-11
申请号：US10354181
申请日：2003-01-30
申请人： Woo-jung Shim , Seung-deog An , Min-seon Kim
发明人： Woo-jung Shim , Seung-deog An , Min-seon Kim
IPC分类号： G03G15/00 , G03G15/02
CPC分类号： G03G15/0266
摘要： A method of controlling a charging potential of an organic photoconductive cell (OPC) includes a first operation of applying two charging voltages Vc1 and Vc2 having respective duties D1 and D2 established in an engine controller unit (ECU) to a conductive roller via a high voltage power supply (HVPS) to charge the OPC, a second operation of measuring sensing voltages Vs1 and Vs2 through a sensing resistor Rs coupled to the conductive roller so that the ECU establishes a target charging current it and calculates a new charging voltage Vc3 and a new duty D3, a third operation of applying the new charging voltage Vc3 and the new duty D3 to the conductive roller via the HVPS to charge the OPC and measuring a charging current Ic3 of the conductive roller, and a fourth operation of comparing a difference between the charging current Ic3 of the conductive roller and the target charging current It with a tolerance value TOL to control the charging potential by using the target charging current when the difference is smaller than the tolerance value TOL. The method maintains the charging potential by compensating for a residual potential of the OPC, thus improving a performance of a printer.
摘要翻译：控制有机光电导元件（OPC）的充电电位的方法包括：将在发动机控制器单元（ECU）中建立的具有各自的占空比D1和D2的两个充电电压Vc1和Vc2经由高电压施加到导电辊的第一操作用于对OPC充电的电源（HVPS），通过耦合到导电辊的感测电阻器Rs测量感测电压Vs1和Vs2的第二操作，使得ECU建立目标充电电流It并计算新的充电电压Vc3和新的负载D3，经由HVPS将新的充电电压Vc3和新的负载D3施加到导电辊的第三操作，以对OPC充电并测量导电辊的充电电流Ic3，以及第四操作，导电辊的充电电流Ic3和目标充电电流It具有公差值TOL，以通过使用目标充电电弧来控制充电电位当差值小于公差值TOL时。该方法通过补偿OPC的残留电位来维持充电电位，从而提高打印机的性能。

3. 发明授权

US06687470B2 Method of compensating for image quality by controlling toner reproduction curve 失效
标题翻译：通过控制调色剂再现曲线补偿图像质量的方法
公开(公告)号：US06687470B2
公开(公告)日：2004-02-03
申请号：US10200972
申请日：2002-07-24
申请人： Woo-jung Shim , Seung-deog An
发明人： Woo-jung Shim , Seung-deog An
IPC分类号： G03G1500
CPC分类号： G03G15/5041 , G03G2215/017
摘要： A method of compensating for image quality controls a toner reproduction curve (TRC). The toner reproduction curve TRC &PHgr;(k) measured by a color toner density sensor is compared with a target TRC &PHgr;R to obtain a deviation &Dgr;&PHgr;. A variation &Dgr;VB of a developer bias VB is calculated from a Jacobian matrix (JB) of a measured developer bias VB to calculate a new developer bias VBN and determining a measured grid voltage VG as a new grid voltage VGN if the deviation (&Dgr;&PHgr;) is greater than a tolerance &Dgr;&PHgr;T. A backplating vector VBP is obtained from the grid voltage VGN and the developer bias VBN. The backplating vector VBP is compared with a critical value VT to set control parameters VGN and VBN and control the TRC &PHgr;. Thus, noise effects on the image quality are minimized to provide an output image closest to an input image quality so as to improve the image quality.
摘要翻译：补偿图像质量的方法控制调色剂再现曲线（TRC）。将由彩色调色剂浓度传感器测量的调色剂再现曲线TRC Phi（k）与目标TRC PhiR进行比较以获得偏差DeltaPhi。根据测量的显影剂偏压VB的雅可比矩阵（JB）计算显影剂偏压VB的变化ΔVB，以计算新的显影剂偏压VBN，并且如果偏差（DeltaPhi）为大于容差DeltaPhiT。从电网电压VGN和显影剂偏压VBN获得背板矢量VBP。将背板矢量VBP与临界值VT进行比较，设定控制参数VGN和VBN并控制TRC Phi。因此，对图像质量的噪声影响被最小化以提供最接近输入图像质量的输出图像，以便提高图像质量。

4. 发明授权

US06741816B2 Tone reproduction curve control method 失效
标题翻译：色调再现曲线控制方法
公开(公告)号：US06741816B2
公开(公告)日：2004-05-25
申请号：US10214940
申请日：2002-08-09
申请人： Woo-jung Shim , Min-seon Kim
发明人： Woo-jung Shim , Min-seon Kim
IPC分类号： G03G1500
CPC分类号： G03G15/5041 , G03G2215/00042 , G03G2215/00054
摘要： A toner reproduction curve (TRC) control method is provided. The TRC method for controlling a printer including a color toner density (CTD) sensor includes the steps of (a) measuring a development potential VB, a charging potential VO, an exposure potential VR, and a development current Id and evaluating a development vector VD, which is the difference between the development potential VB and the exposure potential VR, and a backplating vector VBP, which is the difference between the charging potential VO and the exposure potential VR; (b) forming a TRC space using TRC data detected from the CTD sensor; (c) obtaining a TRC characteristic function from the TRC data, the development vector VD=x, the backplating vector VBP=y, and the development current Id=z; (d) forming an RTRC by setting TRC data, whose covariance is smaller than a threshold value among the detected TRC data, as RTRC data; and (e) measuring TRC data, comparing the measured TRC data with the RTRC data to calculate control parameter values, and controlling the printer using the control parameter values. The TRC method does not require other sensors but the CTD sensor. By using internal parameters covering environmental changes, the charging potential of a photosensitive body, a state of a developer, and the efficiency of a charger can be estimated, thereby realizing efficient TRC control.
摘要翻译：提供调色剂再现曲线（TRC）控制方法。用于控制包括彩色调色剂密度（CTD）传感器的打印机的TRC方法包括以下步骤：（a）测量显影电位VB，充电电位VO，曝光电位VR和显影电流Id，并评估显影矢量VD ，其是显影电位VB和曝光电位VR之间的差异，以及作为充电电位VO和曝光电位VR之间的差的背板矢量VBP; （b）使用从CTD传感器检测的TRC数据形成TRC空间; （c）从TRC数据获得TRC特征函数，开发向量VD = x，背板矢量VBP = y，显影电流Id = z; （d）通过将检测到的TRC数据中的协方差小于阈值的TRC数据设置为RTRC数据来形成RTRC; 和（e）测量TRC数据，将测量的TRC数据与RTRC数据进行比较以计算控制参数值，以及使用控制参数值来控制打印机。 TRC方法不需要其他传感器，但不需要CTD传感器。通过使用覆盖环境变化的内部参数，可以估计感光体的充电电位，显影剂的状态和充电器的效率，从而实现有效的TRC控制。

5. 发明申请

US20060285865A1 Method and apparatus for controlling transfer voltage in image forming device 审中-公开
标题翻译：用于控制图像形成装置中的转印电压的方法和装置
公开(公告)号：US20060285865A1
公开(公告)日：2006-12-21
申请号：US11455783
申请日：2006-06-20
申请人： Woo-jung Shim
发明人： Woo-jung Shim
IPC分类号： G03G15/16
CPC分类号： G03G15/161 , G03G15/1605 , G03G15/1675 , G03G2215/0888 , G03G2215/1623
摘要： A method and apparatus for controlling a transfer voltage applied to a transfer roller in order to transfer a toner image formed on an intermediate transfer member to a medium in a multi-path type electrophotographic image forming device are provided. An amount of toner transferred from the photoconductive member to the intermediate transfer member is detected, and a transfer voltage applied to the transfer roller using the detected amount of toner is determined. Accordingly, when an optimum transfer voltage is determined to be applied to the transfer roller in the multi-path type electrophotographic image forming device, by determining the transfer voltage applied to the transfer roller considering the amount of toner detected while the toner image is transferred from the photoconductive member to the intermediate transfer member, an improved printing quality can be maintained regardless of the coverage of an entire printing image.
摘要翻译：提供了一种用于控制施加到转印辊的转印电压以便将形成在中间转印部件上的调色剂图像转印到多路径电子照相图像形成装置中的介质的方法和装置。检测从感光体转印到中间转印部件上的调色剂量，并确定使用检测量的调色剂施加到转印辊的转印电压。因此，当确定最佳转印电压施加到多路径电子照相图像形成装置中的转印辊时，通过确定施加到转印辊上的转印电压，考虑在调色剂图像转印时检测到的调色剂量不管整个打印图像的覆盖范围如何，可以保持对中间转印部件的感光体的改善的打印质量。

6. 发明申请

US20060024070A1 Method of optimizing amount of toner of electrophotographic printer 失效
标题翻译：优化电子照相打印机调色剂量的方法
公开(公告)号：US20060024070A1
公开(公告)日：2006-02-02
申请号：US11126252
申请日：2005-05-11
申请人： Woo-jung Shim
发明人： Woo-jung Shim
IPC分类号： G03G15/00 , G03G15/08
CPC分类号： G03G15/5062 , G03G15/553
摘要： A method of optimizing the amount of toner of an electrophotographic printer is provided. The method includes measuring a life span of the development roller in use. The speed of a development roller, which corresponds to the measured life span of the development roller, is calculated from a lookup table. The development roller speed is adjusted according to the calculated development roller speed.
摘要翻译：提供一种优化电子照相打印机的调色剂量的方法。该方法包括测量使用中的显影辊的使用寿命。显影辊的速度对应于显影辊的测量寿命，由查找表计算。显影辊速度根据计算的显影辊速度进行调整。

7. 发明授权

US06829443B2 Method of detecting toner depletion in image forming apparatus 有权
标题翻译：检测图像形成装置中的调色剂耗尽的方法
公开(公告)号：US06829443B2
公开(公告)日：2004-12-07
申请号：US10349038
申请日：2003-01-23
申请人： Seung-young Byun , Woo-jung Shim
发明人： Seung-young Byun , Woo-jung Shim
IPC分类号： G03G1500
CPC分类号： G03G15/5041 , G03G15/0851 , G03G15/0863 , G03G15/5058 , G03G15/556
摘要： A method of detecting toner depletion in an image forming apparatus. The method includes comparing an accumulation pixel number Qt that is obtained by accumulating and counting a number of pixels of a printed image, with a reference pixel number Qr, calculated from an amount of toner received in a developing unit, and recognizing that the image forming apparatus is in a toner low state if the accumulation pixel number Qt is larger than the reference pixel number Qr. The method further includes comparing a concentration Di of the printed image with a predetermined reference concentration Dr and detecting toner depletion in the case of the toner low state. The method further includes determining whether the developing unit is a new developing unit, if the developing unit is reinstalled in the toner depletion state.
摘要翻译：一种检测图像形成装置中的调色剂耗尽的方法。该方法包括比较通过累积和计数打印图像的像素数而获得的累加像素数Qt与从显影单元中接收的调色剂量计算的参考像素数Qr，并且识别图像形成如果累积像素数Qt大于参考像素数Qr，则设备处于调色剂低状态。该方法还包括将打印图像的浓度Di与预定的参考浓度Dr进行比较，并在调色剂低状态的情况下检测墨粉消耗。该方法还包括如果显影单元被重新安装在调色剂耗尽状态，则确定显影单元是否是新的显影单元。

8. 发明授权

US06778800B2 Squeezing device of a wet printer and a developing unit employing the same 失效
标题翻译：湿式打印机的挤压装置和采用该打印机的显影单元
公开(公告)号：US06778800B2
公开(公告)日：2004-08-17
申请号：US10046711
申请日：2002-01-17
申请人： Woo-jung Shim , Chung-guk Baek
发明人： Woo-jung Shim , Chung-guk Baek
IPC分类号： G03G1510
CPC分类号： G03G15/11
摘要： A squeezing device of a wet printer for separating a liquid carrier element that is not used for forming an image from ink supplied to the photosensitive belt, includes a squeezing roller mounted to be opposite to the photosensitive belt, a bias applying unit for biasing the squeezing roller with a certain potential, and a plurality of backup rollers mounted side by side to be opposite to the squeezing roller across the photosensitive belt placed between the plurality of backup rollers and the squeezing roller, in order to extend a contact width between the photosensitive belt and the squeezing roller. A printer to which the squeezing device of a wet printer is applied secures a sufficient charging time of the photosensitive belt and lowers a voltage for generating a townsend discharge, to thereby enhance charging performances and printing qualities.
摘要翻译：用于将不用于形成图像的液体载体元件从供应给感光带的油墨分离的湿式打印机的挤压装置包括安装成与感光带相对的挤压辊，偏压施加单元，用于偏压挤压具有一定电位的辊子，以及多个支撑辊并排安装，以与穿过位于多个支承辊和挤压辊之间的感光带相对的挤压辊相对，以便延伸感光带之间的接触宽度和挤压辊。使用湿式打印机的挤压装置的打印机确保感光带的足够的充电时间并降低用于产生乡镇放电的电压，从而提高充电性能和打印质量。

9. 发明授权

US07319826B2 Method of optimizing amount of toner of electrophotographic printer 失效
标题翻译：优化电子照相打印机调色剂量的方法
公开(公告)号：US07319826B2
公开(公告)日：2008-01-15
申请号：US11126252
申请日：2005-05-11
申请人： Woo-jung Shim
发明人： Woo-jung Shim
IPC分类号： G03G15/00 , G03G15/08
CPC分类号： G03G15/5062 , G03G15/553
摘要： A method of optimizing the amount of toner of an electrophotographic printer is provided. The method includes measuring a life span of the development roller in use. The speed of a development roller, which corresponds to the measured life span of the development roller, is calculated from a lookup table. The development roller speed is adjusted according to the calculated development roller speed.
摘要翻译：提供一种优化电子照相打印机的调色剂量的方法。该方法包括测量使用中的显影辊的使用寿命。显影辊的速度对应于显影辊的测量寿命，由查找表计算。显影辊速度根据计算的显影辊速度进行调整。

10. 发明授权

US07206530B2 Control method for correcting sensitivity of toner density sensor of image forming apparatus 有权
标题翻译：用于校正图像形成装置的调色剂浓度传感器的灵敏度的控制方法
公开(公告)号：US07206530B2
公开(公告)日：2007-04-17
申请号：US10984827
申请日：2004-11-10
申请人： Cheol-ju Yang , Woo-jung Shim
发明人： Cheol-ju Yang , Woo-jung Shim
IPC分类号： G03G15/00
CPC分类号： G03G15/5041 , G03G2215/0167
摘要： A controlling method of an image forming apparatus for finely controlling the sensitivity of a density sensor in response to various changes of a printing environment. The controlling method of the image forming apparatus uses one or more of the following methods, alone or in any combination, to control the sensitivity of a density sensor. The methods can include a sensitivity correction method for controlling an output signal of the density sensor according to amount of light irradiated to an image carrier from a light source, a sensitivity correction method for correcting a reference value according to an output signal of the density sensor, and a sensitivity correction method for changing the signal output from the density sensor using a predetermined process.
摘要翻译：一种图像形成装置的控制方法，用于响应于打印环境的各种变化精细地控制密度传感器的灵敏度。图像形成装置的控制方法单独地或以任何组合使用以下方法中的一种或多种来控制密度传感器的灵敏度。该方法可以包括用于根据来自光源照射到图像载体的光量来控制密度传感器的输出信号的灵敏度校正方法，用于根据密度传感器的输出信号校正参考值的灵敏度校正方法以及用于使用预定处理改变从密度传感器输出的信号的灵敏度校正方法。

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