公开(公告)号：US20100054818A1

公开(公告)日：2010-03-04

申请号：US12550619

申请日：2009-08-31

申请人： Takao Izumi ,  Hiroshi Murata ,  Takashi Hatakeyama

发明人： Takao Izumi ,  Hiroshi Murata ,  Takashi Hatakeyama

IPC分类号： G03G15/08 ,  G03G13/06

CPC分类号： G03G15/0844 ,  G03G15/0894

摘要： A developing apparatus includes a tank configured to contain a developing agent including a toner and a carrier, the tank having a discharge port configured to discharge the developing agent overflowing from the tank, a supplier configured to develop a latent image by using the toner contained in the tank, a replenisher configured to contain the developing agent and to replenish the developing agent into the tank, and a controller configured to estimate an amount of the developing agent in the tank in according with the amount of the supplied developing agent and the amount of the replenished developing agent and to execute a forced discharge for forcibly discharging the developing agent contained in the tank from the discharge port based on the estimated amount of developing agent.

摘要翻译： 一种显影装置，包括：容纳构造成容纳包含调色剂和载体的显影剂的容器，所述容器具有排出端口，所述排出口配置成排出从罐溢出的显影剂;供给器，其构造成通过使用包含在 所述容器，配置为容纳所述显影剂并将所述显影剂补充到所述罐中的补充剂，以及控制器，其被配置为根据所提供的显影剂的量和所述显影剂的量来估计所述显影剂的量， 补充显影剂，并且基于估计的显影剂量，执行从排出口强制排出包含在罐中的显影剂的强制排出。

公开(公告)号：US20080181636A1

公开(公告)日：2008-07-31

申请号：US11668191

申请日：2007-01-29

申请人： Takao Izumi

发明人： Takao Izumi

IPC分类号： G03G15/00 ,  G03G15/16

CPC分类号： G03G15/1605 ,  G03G15/1675 ,  G03G15/6591 ,  G03G15/6594 ,  G03G2215/00738 ,  G03G2215/00763 ,  G03G2215/00776

摘要： In an image forming apparatus for transferring a toner image onto a sheet by applying a transfer bias voltage to the sheet through a transfer member, there is provided a technique of preventing poor transfer from occurring by suitably controlling the transfer bias voltage according to a processing condition. The image forming apparatus for transferring the toner image onto the sheet by applying the transfer bias voltage to the sheet through the transfer member includes a roughness information acquiring unit configured to acquire information relating to a surface roughness of the sheet, a sheet information acquiring unit configured to acquire information relating to an electric resistance of the sheet, an optimum current value setting unit configured to set an optimum value of a transfer current at a time when the toner image is transferred onto the sheet based on the information acquired by the roughness information acquiring unit and the sheet information acquiring unit, a voltage detecting unit configured to detect a voltage value at a time when the transfer current of the current value set by the optimum current value setting unit is made to flow to the sheet through the transfer member, and a voltage control unit configured to apply the transfer bias voltage of the voltage value detected by the voltage detecting unit.

摘要翻译： 在通过转印部件向片材施加转印偏压而将调色剂图像转印到片材上的图像形成装置中，提供了通过根据处理条件适当地控制转印偏压来防止发生不良转印的技术 。 通过将转印偏压施加到片材上的转印构件，将调色剂图像转印到纸上的图像形成装置包括粗糙度信息获取单元，被配置为获取与纸张的表面粗糙度有关的信息，纸张信息获取单元配置 以获取与片材的电阻有关的信息;最佳电流值设定单元，被配置为基于通过粗糙度信息获取获取的信息将调色剂图像转印到片材上时的转印电流的最佳值设定 单元和片材信息获取单元，电压检测单元，其被配置为检测当由最佳电流值设定单元设定的当前值的转移电流通过转印构件流向片材时的电压值;以及 配置为施加电压值检测的转印偏压的电压控制单元 由电压检测单元编辑。

公开(公告)号：US20070248369A1

公开(公告)日：2007-10-25

申请号：US11737279

申请日：2007-04-19

申请人： Takao Izumi ,  Masato Ogasawara

发明人： Takao Izumi ,  Masato Ogasawara

IPC分类号： G03G15/00 ,  G03G15/16

CPC分类号： G03G15/1675

摘要： An image forming apparatus includes a transfer belt to carry a toner image, a transfer roller to make contact with the transfer belt to transfer the toner image onto a sheet from the transfer belt, an opposite roller facing the transfer roller across the transfer belt, a current application unit to apply a predetermined current to the transfer roller or opposite roller when there is no sheet at a transfer position, a voltage detection unit to detect a voltage generated at a transfer position by applying the predetermined current to the transfer roller or opposite roller by the current application unit, a sheet sensor to detect a kind of the sheet, and a humidity sensor to detect intra-apparatus humidity. The image forming apparatus further includes a transfer bias voltage application unit to calculate a transfer roller correction voltage on the basis of the voltage detected by the voltage detection unit, calculate a sheet correction voltage on the basis of the sheet kind detected by the sheet sensor and the intra-apparatus humidity detected by the humidity sensor, add the calculated transfer roller correction voltage and sheet correction voltage, thereby decide a transfer bias voltage, and apply the decided transfer bias voltage to either of the transfer roller and the opposite roller so as to transfer the toner image onto the sheet from the transfer belt.

摘要翻译： 图像形成装置包括用于承载调色剂图像的转印带，转印辊与转印带接触以将调色剂图像从转印带转印到片材上，相对的辊面对转印辊穿过转印带， 电流施加单元，当在转印位置处没有纸张时，将预定电流施加到转印辊或反向辊;电压检测单元，通过将预定电流施加到转印辊或反向辊来检测在转印位置处产生的电压 通过当前的应用单元，检测片材的种类的片材传感器和用于检测设备内湿度的湿度传感器。 图像形成装置还包括转印偏压施加单元，其基于由电压检测单元检测到的电压来计算转印辊校正电压，基于由纸张传感器检测到的纸张种类计算纸张校正电压;以及 由湿度传感器检测的设备内湿度，加上计算出的转印辊校正电压和纸张校正电压，从而确定转印偏压，并将确定的转印偏压施加到转印辊和相对辊中的任一个，以便 从转印带将调色剂图像转印到纸张上。

公开(公告)号：US20070206970A1

公开(公告)日：2007-09-06

申请号：US11367129

申请日：2006-03-03

申请人： Takao Izumi ,  Masato Ogasawara

发明人： Takao Izumi ,  Masato Ogasawara

IPC分类号： G03G15/16

CPC分类号： G03G15/161 ,  G03G15/0131 ,  G03G2215/0119

摘要： According to the invention, a constant current output is applied to a backup roller or a secondary transfer member, and the cleaning bias is controlled according to the measurement obtained by monitoring the voltage generated at that time. Cleaning biases of a plus polarity and a minus polarity are alternately applied to the backup roller to recover the toner adhered on the secondary transfer roller to the intermediate transfer belt. The cleaning bias is controlled according to the combined resistance of the secondary transfer section which is varied with not only the environment of the image forming apparatus, but also the condition of use and various factors to recover the toner adhered to the secondary transfer roller to the intermediate transfer belt without fail, thereby preventing smudges on the back of sheet paper or smudges on images.

摘要翻译： 根据本发明，将恒定电流输出施加到支撑辊或二次转印构件，并且根据通过监视当时产生的电压获得的测量来控制清洁偏压。 将清除正极性和负极性的偏压交替地施加到支撑辊上以将附着在二次转印辊上的调色剂回收到中间转印带。 清洁偏压根据不仅图像形成装置的环境而变化的二次转印部的组合电阻进行控制，而且还根据使用条件和各种因素回收附着到二次转印辊上的调色剂 中间转印带无故障，从而防止纸张背面的污迹或图像上的污迹。

公开(公告)号：US20060210318A1

公开(公告)日：2006-09-21

申请号：US11344130

申请日：2006-02-01

申请人： Hiroshi Murata ,  Takao Izumi ,  Takashi Hatakeyama

发明人： Hiroshi Murata ,  Takao Izumi ,  Takashi Hatakeyama

IPC分类号： G03G15/08

CPC分类号： G03G15/0822 ,  G03G21/12

摘要： A developer bent is provided on the wall of the developer container housing developer comprising toner and carrier for the developing device to overflow developer. The sectional shape of the discharge dam forming the developer bent in the vertical direction to the developer bent is such that the top part of the dam is made thinner than the wall thickness of the developer container and the slanting angle of the dam to the wall of the developer container is made larger than the repose angle of the developer.

摘要翻译： 显影剂弯曲设置在显影剂容器外壳显影剂的壁上，包括用于显影装置的调色剂和载体以溢出显影剂。 形成显影剂垂直于显影剂弯曲的显影剂的排出槽的截面形状使得坝的顶部比显影剂容器的壁厚更薄，并且坝的壁的倾斜角度 显影剂容器被制成大于显影剂的静止角度。

公开(公告)号：US07099615B2

公开(公告)日：2006-08-29

申请号：US10868974

申请日：2004-06-17

申请人： Takao Izumi

发明人： Takao Izumi

IPC分类号： G03G15/16

CPC分类号： G03G15/167

摘要： An image forming apparatus is capable of preventing toner on an intermediate transfer medium from being scattered toward a sheet and hence capable of effecting printing with favorable image quality that is free from noise and contamination. A sheet transported from a regist roller is guided toward a transfer belt serving as an intermediate transfer medium along a guide member and then guided to the transfer nip between the transfer belt and a secondary transfer roller via the upper end edge of the guide member. The sheet already comes into close contact with the transfer belt at a position upstream of the transfer nip. Consequently, even if an electric field for transfer emitted from the secondary transfer roller extends as far as the periphery of the transfer nip, no part of toner on the transfer belt will be scattered toward the sheet.

摘要翻译： 图像形成装置能够防止中间转印介质上的调色剂朝向纸张散射，因此能够以无噪声和污染的良好图像质量进行打印。 从注册辊传送的片材沿着引导构件被引导到用作中间转印介质的转印带，然后经由引导构件的上端边缘被引导到转印带和二次转印辊之间的转印辊隙。 纸张已经在转印辊隙的上游位置与转印带紧密接触。 因此，即使从二次转印辊发出的转印用电场延伸到转印辊隙的周边，转印带上的调色剂的一部分也不会朝向纸张散射。

公开(公告)号：US06766125B1

公开(公告)日：2004-07-20

申请号：US10382851

申请日：2003-03-07

申请人： Takao Izumi

发明人： Takao Izumi

IPC分类号： G03G1516

CPC分类号： G03G15/1675

摘要： A control unit uses electric field generating means (power supply) to effect a control to set a time period of alternate application of positive and negative bias voltages to a secondary transfer roller to be less than a time period corresponding to a single continuous rotation of the transfer rotary body.

摘要翻译： 控制单元使用电场产生装置（电源）来进行控制，以将正偏压和负偏压的交替施加的时间周期设置为二次转印辊小于对应于第二转印辊的单次连续旋转的时间段 转移旋转体。

公开(公告)号：US06519437B1

公开(公告)日：2003-02-11

申请号：US09934657

申请日：2001-08-23

申请人： Shinji Aoki ,  Takao Izumi

发明人： Shinji Aoki ,  Takao Izumi

IPC分类号： G03G1508

CPC分类号： G03G15/0808

摘要： A developing apparatus with a developing roller is brought in contact with an image bearer, and rotates upwards from below in a contact portion to supply a developer to the image bearer, a supply roller which is brought in contact with the developing roller, and rotates in the same direction as the direction of the developing roller to supply toner to the developing roller, a carrying blade for carrying the toner to the supply roller, a retaining member which is positioned below the supply roller and disposed apart from the developing roller, and which retains the developer carried by the carrying blade and allows the retained developer to be supplied to the developing roller by the supply roller, and a layer thickness regulating blade for regulating a layer thickness of the developer supplied onto the developing roller.

摘要翻译： 具有显影辊的显影装置与图像承载体接触，并且在接触部分中从下方向上旋转，以将显影剂供应到图像载体;供给辊，其与显影辊接触并在 与向显影辊供给调色剂的显影辊的方向相同的方向，用于将调色剂携带到供给辊的承载刮板，位于供给辊下方并与显影辊分开设置的保持部件，以及 保持由承载刀片携带的显影剂并且允许保留的显影剂通过供给辊供给到显影辊，以及用于调节供给到显影辊上的显影剂的层厚度的层厚度调节片。

公开(公告)号：US06519434B2

公开(公告)日：2003-02-11

申请号：US09898465

申请日：2001-07-05

申请人： Takao Izumi ,  Shinji Aoki

发明人： Takao Izumi ,  Shinji Aoki

IPC分类号： G03G1501

CPC分类号： G03G15/0126 ,  G03G15/01 ,  G03G2215/018

摘要： In an image forming apparatus that is capable of forming a color image by bringing plural one-component developing devices in contact with a photosensitive belt, a two-component developing device for black image forming is arranged to face the photosensitive belt in an area wherein the belt is not displaced. By controlling this two component developing device in either the ready to developing state or the non-developing state, when forming a color image, the one-component developing devices are brought in contact with or separated from the photosensitive belt and when forming a monochrome image, using the two-component developing device, a developing nip is formed for the developing gap between the developing device and the photosensitive belt by the developer layer, and a black toner image is formed on the photosensitive belt.

摘要翻译： 在能够通过使多个单组分显影装置与感光带接触而形成彩色图像的图像形成装置中，将黑色成像用的双组分显影装置布置成在感光带的与 皮带没有移位。 通过将该双组分显影装置控制在准备显影状态或非显影状态，当形成彩色图像时，单组分显影装置与感光带接触或分离，并且当形成单色图像时 使用双组分显影装置，通过显影剂层形成用于显影装置和感光带之间的显影间隙的显影辊隙，并且在感光带上形成黑色调色剂图像。

公开(公告)号：US06473573B2

公开(公告)日：2002-10-29

申请号：US09812819

申请日：2001-03-21

申请人： Takao Izumi ,  Shinji Aoki

发明人： Takao Izumi ,  Shinji Aoki

IPC分类号： G03G1508

CPC分类号： G03G15/0806 ,  G03G2215/0634

摘要： A developing apparatus of the present invention is provided with a developing roller for supplying a developing agent to an image carrier by rotation, a layer regulation blade for regulating the layer thickness of a developing agent supplied to the developing roller, a thermistor for sensing the temperature of either the developing roller or the layer regulation blade, and a control section for controlling the rotation of the developing roller in accordance with a temperature sensed by the thermistor.

摘要翻译： 本发明的显影装置设置有用于通过旋转将显影剂供应到图像载体的显影辊，用于调节供应到显影辊的显影剂的层厚度的层调节刮板，用于感测温度的热敏电阻 显影辊或层调节叶片，以及控制部分，用于根据由热敏电阻感测到的温度来控制显影辊的旋转。