公开(公告)号：US20080025738A1

公开(公告)日：2008-01-31

申请号：US11638459

申请日：2006-12-14

申请人： Myung-kook Ahn ,  Kyu-cheol Shin

发明人： Myung-kook Ahn ,  Kyu-cheol Shin

IPC分类号： G03G15/08 ,  G03G15/00

CPC分类号： G03G15/0855 ,  G03G15/5058 ,  G03G2215/00042 ,  G03G2215/0164

摘要： A toner density estimating method for a two-component developer is provided. The toner density estimating method includes: sensing photo-reflectance of a test pattern having a plurality of grayscales formed by using toner; calculating a rate of change of the photo-reflectance according to the grayscales of the test pattern; and estimating a toner density based on the rate of change. Accordingly, it is possible to accurately estimate the toner density irrespective of the influence of changes in temperature, humidity, or other external factors.

摘要翻译： 提供了用于双组分显影剂的调色剂浓度估计方法。 调色剂浓度估计方法包括：检测具有通过使用调色剂形成的多个灰度级的测试图案的光反射率; 根据测试图案的灰度计算光反射率的变化率; 并且基于变化率来估计调色剂浓度。 因此，无论温度，湿度或其他外部因素的变化的影响如何，都可以准确地估计调色剂浓度。

公开(公告)号：US07489893B2

公开(公告)日：2009-02-10

申请号：US11441054

申请日：2006-05-26

申请人： Tsutomu Teraoka ,  Masahiko Itaya ,  Kyu-cheol Shin ,  Tsutomu Sasaki ,  Myung-kook Ahn ,  Naonori Kurogawa

发明人： Tsutomu Teraoka ,  Masahiko Itaya ,  Kyu-cheol Shin ,  Tsutomu Sasaki ,  Myung-kook Ahn ,  Naonori Kurogawa

IPC分类号： G03G15/08 ,  G03G15/09

CPC分类号： G03G15/0815 ,  G03G2215/0609

摘要： A hybrid type developing apparatus and method forms a magnetic brush of non-magnetic toner and a magnetic carrier on a circumference of a magnetic roller forms a uniform toner layer on the circumference of a donor roller using only toner from the magnetic roller, and develops an electrostatic latent image on an image receptor. The hybrid type developing apparatus includes: a plurality of electrodes on the circumference of the donor roller; first and second brush electrodes in an upstream area and a downstream area, respectively, of the donor roller facing the magnetic roller with respect to a direction of rotation; and a bias applying device for applying a recovery bias to the first brush electrode to remove toner from the donor roller and a supply bias to the second brush electrode to supply toner from the magnetic roller to the donor roller.

摘要翻译： 在磁性辊的圆周上形成非磁性调色剂的磁刷和磁性载体的混合型显影装置和方法在仅使用来自磁辊的调色剂的供体辊的圆周上形成均匀的调色剂层，并形成 图像受体上的静电潜像。 混合型显影装置包括：供体辊圆周上的多个电极; 供体辊分别相对于旋转方向面向磁性辊的上游区域和下游区域中的第一和第二刷电极; 以及偏置施加装置，用于向第一刷电极施加恢复偏压以从供体辊中除去调色剂，并向第二刷电极提供偏压，以将调色剂从磁辊供给到供体辊。

公开(公告)号：US20070019995A1

公开(公告)日：2007-01-25

申请号：US11441054

申请日：2006-05-26

申请人： Tsutomu Teraoka ,  Masahiko Itaya ,  Kyu-cheol Shin ,  Tsutomu Sasaki ,  Myung-kook Ahn ,  Naonori Kurogawa

发明人： Tsutomu Teraoka ,  Masahiko Itaya ,  Kyu-cheol Shin ,  Tsutomu Sasaki ,  Myung-kook Ahn ,  Naonori Kurogawa

IPC分类号： G03G15/08

CPC分类号： G03G15/0815 ,  G03G2215/0609

摘要： There are provided a hybrid type developing apparatus and method. There is provided a hybrid type developing apparatus which forms a magnetic brush comprised of non-magnetic toner and a magnetic carrier on a circumference of a magnetic roller using a magnetic force, forms a uniform toner layer on the circumference of a roller by providing only toner from the magnetic roller to the donor roller, and develops an electrostatic latent image on an image receptor with the toner on the donor roller, the hybrid type developing apparatus comprising: a plurality of electrodes arrayed on the circumference of the donor roller; first and second brush electrodes located in an upstream area and a downstream area, respectively, of an area of the donor roller facing the magnetic roller, contacting some of the electrodes, wherein the upstream area and the downstream area are an upstream and a downstream of the rotation of the donor roller; and a bias applying device for applying a recovery bias to the first brush electrode to remove toner from the donor roller and a supply bias to the second brush electrode to supply toner from the magnetic roller to the donor roller.

摘要翻译： 提供了混合型显影装置和方法。 提供了一种混合型显影装置，其使用磁力在磁性辊的圆周上形成由非磁性调色剂和磁性载体构成的磁刷，通过仅提供调色剂在辊的圆周上形成均匀的调色剂层 从所述磁性辊到所述供体辊，并且在所述供体辊上的所述调色剂的图像接收器上形成静电潜像，所述混合型显影装置包括：排列在所述供体辊的圆周上的多个电极; 第一和第二刷电极分别位于供体辊的面向磁辊的区域的上游区域和下游区域中，与一些电极接触，其中上游区域和下游区域是上游区域和下游区域 供体辊的旋转; 以及偏置施加装置，用于向第一刷电极施加恢复偏压以从供体辊中除去调色剂，并向第二刷电极提供偏压，以将调色剂从磁辊供给到供体辊。

公开(公告)号：US20070014593A1

公开(公告)日：2007-01-18

申请号：US11439232

申请日：2006-05-24

申请人： Naonori Kurogawa ,  Masahiko Itaya ,  Kyu-cheol Shin ,  Tsutomu Teraoka ,  Tsutomu Sasaki ,  Myung-kook Ahn

发明人： Naonori Kurogawa ,  Masahiko Itaya ,  Kyu-cheol Shin ,  Tsutomu Teraoka ,  Tsutomu Sasaki ,  Myung-kook Ahn

IPC分类号： G03G15/08

CPC分类号： G03G15/0907 ,  G03G2215/0643

摘要： An electrophotographic image forming apparatus includes: an image receptor on which an electrostatic latent image is formed; a magnetic roller for forming a magnetic brush having a non-magnetic toner and a magnetic carrier by magnetic force; a donor roller facing the image receptor and receiving a toner from the magnetic roller to form a toner layer on an outer circumference thereof; bias applying device for applying a bias voltage to the donor roller to develop the electrostatic latent image by supplying the toner from the toner layer; and toner removing device which contacts the donor roller and removes at least a portion of the toner layer from a surface of the donor roller after developing. A method of developing the latent image on the image receptor is provided by the apparatus.

摘要翻译： 电子照相图像形成装置包括：形成有静电潜像的图像接收器; 用于通过磁力形成具有非磁性调色剂和磁性载体的磁刷的磁性辊; 供体辊面对图像接收器并从磁性辊接收调色剂以在其外周上形成调色剂层; 偏置施加装置，用于通过从调色剂层供应调色剂来向供体辊施加偏压以显影静电潜像; 以及调色剂去除装置，其与供体辊接触并在显影后从供体辊的表面去除调色剂层的至少一部分。 通过该装置提供了在图像接收器上显影潜像的方法。

公开(公告)号：US20070003328A1

公开(公告)日：2007-01-04

申请号：US11439255

申请日：2006-05-24

申请人： Naonori Kurogawa ,  Masahiko Itaya ,  Kyu-cheol Shin ,  Tsutomu Teraoka ,  Tsutomu Sasaki ,  Myung-kook Ahn

发明人： Naonori Kurogawa ,  Masahiko Itaya ,  Kyu-cheol Shin ,  Tsutomu Teraoka ,  Tsutomu Sasaki ,  Myung-kook Ahn

IPC分类号： G03G15/08

CPC分类号： G03G15/0907 ,  G03G2215/0643

摘要： A hybrid type developing apparatus of an electrophotographic image forming apparatus includes: an image receptor on which an electrostatic latent image is formed; a magnetic roller for forming a magnetic brush of non-magnetic toner and magnetic carrier by using magnetic force; a donor roller which faces the image receptor and has a circumference for supporting a toner layer formed by receiving toner from the magnetic roller; a bias voltage applying device for applying a development bias voltage to the donor roller to develop toner of the toner layer to the electrostatic latent image; an electrode positioned at an upstream side at a point closest and most adjacent position between the donor roller and the image receptor and at a downstream side at a point closest and most adjacent position between the donor roller and the magnetic roller and an applied bias voltage of weakening adhesive force of the toner layer to the donor roller and cohesive force of toner to each other.

摘要翻译： 一种电子照相成像装置的混合型显影装置，包括：形成有静电潜像的图像接收器; 用于通过使用磁力形成非磁性调色剂和磁性载体的磁刷的磁性辊; 供体辊，其面向图像接收器并且具有用于支撑通过从该磁辊接收调色剂而形成的调色剂层的圆周; 偏置电压施加装置，用于向施主辊施加显影偏压，以将调色剂层的调色剂显影到静电潜像; 位于供体辊和图像接收点之间的最靠近和最相邻位置处的上游侧的电极，以及位于施主辊和磁性辊之间的最接近和最相邻位置处的下游侧的电极和施加的偏置电压 调色剂层对供体辊的粘合力降低，并且调色剂的粘合力彼此减弱。

公开(公告)号：US07711277B2

公开(公告)日：2010-05-04

申请号：US11638459

申请日：2006-12-14

申请人： Myung-kook Ahn ,  Kyu-cheol Shin

发明人： Myung-kook Ahn ,  Kyu-cheol Shin

IPC分类号： G03G15/00

CPC分类号： G03G15/0855 ,  G03G15/5058 ,  G03G2215/00042 ,  G03G2215/0164

摘要： A toner density estimating method for a two-component developer is provided. The toner density estimating method includes: sensing photo-reflectance of a test pattern having a plurality of grayscales formed by using toner; calculating a rate of change of the photo-reflectance according to the grayscales of the test pattern; and estimating a toner density based on the rate of change. Accordingly, it is possible to accurately estimate the toner density irrespective of the influence of changes in temperature, humidity, or other external factors.

摘要翻译： 提供了用于双组分显影剂的调色剂浓度估计方法。 调色剂浓度估计方法包括：检测具有通过使用调色剂形成的多个灰度级的测试图案的光反射率; 根据测试图案的灰度计算光反射率的变化率; 并且基于变化率来估计调色剂浓度。 因此，无论温度，湿度或其他外部因素的变化的影响如何，都可以准确地估计调色剂浓度。

公开(公告)号：US20060222390A1

公开(公告)日：2006-10-05

申请号：US11342632

申请日：2006-01-31

申请人： Tsutomu Sasaki ,  Kyu-cheol Shin ,  Myung-kook Ahn ,  Masahiko Itaya ,  Tsutomu Teraoka ,  Naonori Kurogawa

发明人： Tsutomu Sasaki ,  Kyu-cheol Shin ,  Myung-kook Ahn ,  Masahiko Itaya ,  Tsutomu Teraoka ,  Naonori Kurogawa

IPC分类号： G03G15/09

CPC分类号： G03G15/065 ,  G03G2215/0607

摘要： Provided is an image forming device performing hybrid development that uses magnetic carriers and nonmagnetic carriers. An electrical potential of a non-image portion on an image holder and an electrical potential of a direct current component of a developing bias voltage applied to a developing roller are determined so that a difference between the electrical potentials are less than or equal to a value at which a developing rate of the non-image portion is saturated.

摘要翻译： 提供一种进行使用磁性载体和非磁性载体的混合显影的图像形成装置。 确定图像保持器上的非图像部分的电位和施加到显影辊的显影偏压的直流分量的电位，使得电位差之间的差小于或等于值 非图像部分的显影速率饱和。

公开(公告)号：US20060120749A1

公开(公告)日：2006-06-08

申请号：US11263862

申请日：2005-11-02

申请人： Myung-kook Ahn

发明人： Myung-kook Ahn

IPC分类号： G03G15/16

CPC分类号： G03G15/168 ,  G03G2215/1652

摘要： An apparatus and method for cleaning a transfer roller of a wet-type image forming apparatus are provided. The method includes applying a measured voltage to the transfer roller; measuring a resistance among a transfer backup roller, an intermediate transfer medium, and the transfer roller based on the applied measured voltage; calculating a density of a toner of a developer on the transfer roller based on the measured resistance; and if the density of the toner is more than or equal to a predetermined reference value, supplying a carrier or applying the cleaning voltage. Thus, the cleaning voltage can be adjusted depending on the density of the toner of the developer on the transfer roller so as to maintain appropriate cleaning efficiency. If the density of the toner is greater than or equal to the predetermined reference value, the carrier can be supplied so as to improve the cleaning efficiency.

摘要翻译： 提供一种用于清洁湿式图像形成装置的转印辊的装置和方法。 该方法包括将测量的电压施加到转印辊上; 基于所施加的测量电压来测量转印支承辊，中间转印介质和转印辊之间的电阻; 基于所测量的电阻计算转印辊上的显影剂的调色剂的浓度; 并且如果调色剂的密度大于或等于预定参考值，则提供载体或施加清洁电压。 因此，可以根据转印辊上的显影剂的调色剂的密度来调节清洁电压，以保持适当的清洁效率。 如果调色剂的浓度大于或等于预定的参考值，则可以提供载体以提高清洁效率。

公开(公告)号：US20060110190A1

公开(公告)日：2006-05-25

申请号：US11280355

申请日：2005-11-17

申请人： In-yong Song ,  Myung-kook Ahn ,  Sang-don Lee ,  Shinichi Hasatomi

发明人： In-yong Song ,  Myung-kook Ahn ,  Sang-don Lee ,  Shinichi Hasatomi

IPC分类号： G03G15/01

CPC分类号： G03G15/161 ,  G03G15/162 ,  G03G2215/1623

摘要： An image transfer member, an image transfer device and an image forming system employing the image transfer member and device are disclosed. The image transfer member comprises a base layer, and a surface layer formed from a semi-conductive material above the base layer to receive the developer image transferred from the photoconductor. The surface layer forms a contact inscribed angle θ in the range of 10° to 50° between the surface thereof and the developer image. The image transfer member has a voltage-current characteristic exhibiting a current density (CD) in the range of 0.6 μA/cm2≦CD≦1.5 μA/cm2 at 1 KV voltage, and a voltage decay characteristic exhibiting a voltage decay time (DT) in the range of 0.4 sec≦DT≦3 sec for the voltage decay from 500 V to 100 V. The present invention avoids a transfer defect such as transfer void produced by breakdown caused when a high bias voltage is applied to a developer image having a high electric charge and to significantly improve the transfer efficiency.

摘要翻译： 公开了一种图像传送部件，图像传送装置和使用图像传送部件和装置的图像形成系统。 图像转印构件包括基底层和由基底层上方的半导电材料形成的表面层，以接收从感光体转印的显影剂图像。 表面层在其表面和显影剂图像之间形成10°至50°范围内的接触内切角θ。 图像转印部件具有表现出电流密度（CD）在0.6μA/ cm 2≤= CD <=1.5μA/ cm 2的范围内的电压 - 电流特性。 电压衰减时间（DT）在电压衰减时间（DT）的范围内，在500V至100V的范围内，电压衰减特性为0.4sec <= DT <= 3sec。本发明避免了转移缺陷， 作为通过高电压施加到具有高电荷的显影剂图像时引起的击穿而产生的转移空穴并且显着提高转印效率。

公开(公告)号：US08417133B2

公开(公告)日：2013-04-09

申请号：US12923225

申请日：2010-09-09

申请人： Myung-kook Ahn ,  Sang-don Lee ,  Sung-min Park

发明人： Myung-kook Ahn ,  Sang-don Lee ,  Sung-min Park

IPC分类号： G03G15/02

CPC分类号： G03G15/0275 ,  G03G15/0266 ,  G03G15/55 ,  G03G15/553 ,  G03G2215/00776

摘要： Provided is an apparatus and method for supplying a charge voltage to an organic photoconductor (OPC) drum. The apparatus includes a storage unit for storing first service life information of the OPC drum according to a first supplying method, and second service life information of the OPC drum according to a second supplying method, a sensor unit for measuring information about conditions surrounding the apparatus, a control unit for selecting one of the first and second supplying methods according to the measured information and determining a charge voltage corresponding to the service life information according to the selected method, and a voltage supplying unit using the selected method to supply the determined charge voltage to the OPC drum.

摘要翻译： 提供了一种用于向有机感光鼓（OPC）鼓提供充电电压的装置和方法。 该装置包括存储单元，用于根据第一供应方法存储OPC滚筒的第一使用寿命信息，以及根据第二提供方法存储OPC滚筒的第二使用寿命信息;传感器单元，用于测量关于设备周围的条件的信息 控制单元，用于根据所测量的信息选择第一和第二供给方法之一，并根据所选择的方法确定与使用寿命信息相对应的充电电压;以及电压提供单元，使用所选择的方法来提供所确定的电荷 电压到OPC鼓。