公开(公告)号：US20080267640A1

公开(公告)日：2008-10-30

申请号：US12108954

申请日：2008-04-24

申请人： Masahito HAMAYA ,  Hiroyuki NAGANAWA

发明人： Masahito HAMAYA ,  Hiroyuki NAGANAWA

IPC分类号： G03G15/00

CPC分类号： G03G15/5041 ,  G03G2215/00042

摘要： An image forming apparatus, according to the present invention can include, an image carrier, a charger configured to charge the image carrier, an exposure unit configured to form an electrostatic latent image by exposing the image carrier, a developing unit configured to develop the electrostatic latent image, a detection unit configured to detect the density of a developer adherent to the image carrier, and a controller configured to determine a deteriorated state of the image carrier, by charging the image carrier and then conducting a development, in a condition where a potential difference between the charger and the developing unit is set to be smaller than that at the time of image formation, before detecting a density of a developer on an unirradiated portion on the image carrier, so that a detection result to be used for its decision of the deteriorated state of the image carrier is obtained.

摘要翻译： 根据本发明的图像形成装置可以包括：图像载体，被配置为对图像载体进行充电的曝光单元，被配置为通过曝光图像载体来形成静电潜像的曝光单元，被配置为显影静电图像的显影单元 潜像，被配置为检测附着于图像载体的显影剂的浓度的检测单元，以及被配置为通过对图像载体进行充电然后进行显影来确定图像载体的劣化状态的控制器， 在检测图像载体上未照射部分上的显影剂的浓度之前，将充电器和显影单元之间的电位差设置为小于图像形成时的电位差，使得用于其判定的检测结果 得到图像载体的劣化状态。

公开(公告)号：US20080181656A1

公开(公告)日：2008-07-31

申请号：US12023088

申请日：2008-01-31

申请人： Masahito HAMAYA ,  Hiroyuki NAGANAWA

发明人： Masahito HAMAYA ,  Hiroyuki NAGANAWA

IPC分类号： G03G15/02

CPC分类号： G03G15/0291 ,  G03G2215/027

摘要： An image forming apparatus is provided. The image forming apparatus includes a photosensitive member which carries an electrostatic latent image; a charger comprising a charging wire extended in a direction parallel to an axial direction of the photosensitive member, the charger serving to charge the photosensitive member, and a promoting unit which is provided on at least one side of a region of the charger which is opposite to an image forming region in which the electrostatic latent image is formed, the promoting unit promoting a leakage current of the charger; detecting unit which detects a leakage current of the charger; and a correction unit which corrects the charging wire if the leakage current is detected.

摘要翻译： 提供一种图像形成装置。 图像形成装置包括承载静电潜像的感光部件; 充电器，其包括沿平行于感光构件的轴向的方向延伸的充电线，用于对感光构件充电的充电器，以及提供单元，该促进单元设置在充电器的相对的区域的至少一侧上 涉及形成有静电潜像的图像形成区域，促进单元促进充电器的漏电流; 检测单元，其检测充电器的漏电流; 以及校正单元，其如果检测到漏电流则校正充电线。

公开(公告)号：US20080008483A1

公开(公告)日：2008-01-10

申请号：US11773844

申请日：2007-07-05

申请人： Masahito HAMAYA ,  Hiroyuki NAGANAWA ,  Katsumi INUKAI ,  Kazushi FUKUTA

发明人： Masahito HAMAYA ,  Hiroyuki NAGANAWA ,  Katsumi INUKAI ,  Kazushi FUKUTA

IPC分类号： G03G15/00

CPC分类号： G03G15/166 ,  G03G2215/0119

摘要： An image-forming device has a housing, a cleaning unit, a toner detection unit, and a control unit. The cleaning target member is provided in the housing. The cleaning unit applies a predetermined voltage to the cleaning target member to remove toner from the cleaning target member through an electrostatic force. The predetermined voltage has a predetermined absolute value. The toner detection unit detects an amount of toner on the cleaning target member at least twice. The detected amount of toner includes a first amount of toner and a second amount of toner. The first amount of toner is detected when a first voltage having a first absolute value is applied as the predetermined voltage at a first time,. The second amount of toner is detected when a second voltage having a second absolute value is applied as the predetermined voltage at a second time. The second time is later than the first time. The control unit determines the predetermined absolute value on the basis of the first amount of toner and the second amount of toner.

摘要翻译： 图像形成装置具有壳体，清洁单元，调色剂检测单元和控制单元。 清洁目标构件设置在壳体中。 清洁单元将预定电压施加到清洁目标构件，以通过静电力从清洁目标构件去除调色剂。 预定电压具有预定的绝对值。 调色剂检测单元至少检测清洁目标构件上的调色剂量。 检测到的调色剂量包括第一量的调色剂和第二量的调色剂。 当第一次施加具有第一绝对值的第一电压作为预定电压时，检测第一量的调色剂。 当第二次施加具有第二绝对值的第二电压作为预定电压时，检测第二量的调色剂。 第二次比第一次晚。 控制单元基于调色剂的第一量和第二量的调色剂来确定预定的绝对值。

公开(公告)号：US20110026955A1

公开(公告)日：2011-02-03

申请号：US12843127

申请日：2010-07-26

申请人： Masamitsu TAKAHASHI ,  Hiroyuki NAGANAWA

发明人： Masamitsu TAKAHASHI ,  Hiroyuki NAGANAWA

IPC分类号： G03G15/00 ,  G03G15/043 ,  G03G15/06 ,  G03G15/16

CPC分类号： G03G15/1675 ,  G03G15/043

摘要： An image forming apparatus comprising a photosensitive body, a charger configured to charge the photosensitive body, an exposure unit configured to expose the photosensitive body charged by the charger, a developer transport section configured to cause relative movement with respect to the photosensitive body for transporting developer therebetween, a current measurement section configured to measure a current flowing between the photosensitive body and the developer transport section, and a determination unit configured to compare a current with a threshold, the current measured by the current measurement section when the photosensitive body and the developer transport section move relatively to each other and a first area of the photosensitive body that needs to be exposed faces the developer transport section, and determine whether an exposure of the photosensitive body is proper based on a result of the comparison.

摘要翻译： 一种图像形成装置，包括感光体，被配置为对感光体充电的充电器，被配置为暴露由充电器充电的感光体的曝光单元，被配置为引起相对于感光体的相对运动以用于输送显影剂的显影剂传送部 其中，电流测量部分被配置为测量在感光体和显影剂传送部分之间流动的电流;以及确定单元，被配置为将电流与阈值进行比较，当电流测量部分当感光体和显影剂 运输部分相对移动并且需要暴露的感光体的第一区域面向显影剂传送部分，并且基于比较的结果来确定感光体的曝光是否适当。

公开(公告)号：US20100166446A1

公开(公告)日：2010-07-01

申请号：US12646231

申请日：2009-12-23

申请人： Hiroyuki NAGANAWA ,  Hiroyuki TSUJIHARA ,  Hiroaki NIWA ,  Shiro UENO

发明人： Hiroyuki NAGANAWA ,  Hiroyuki TSUJIHARA ,  Hiroaki NIWA ,  Shiro UENO

IPC分类号： G03G15/20

CPC分类号： G03G15/2039

摘要： An image forming apparatus is provided. The image forming apparatus includes an image forming unit; a fuser having a heating unit to which an alternating voltage is applied from an alternating power supply so as to perform heating; a zero-cross pulse generating unit that generates a zero-cross pulse; a voltage estimating unit that estimates the alternating voltage on the basis of a width of the zero-cross pulse; a temperature detecting unit that detects the temperature of the fuser; a heating control parameter setting unit that sets a heating control parameter for controlling the heating unit on the basis of the alternating voltage estimated by the voltage estimating unit and the temperature of the fuser; and a heating control unit that controls the heating unit on the basis of the heating control parameter set by the heating control parameter setting unit.

摘要翻译： 提供一种图像形成装置。 图像形成装置包括图像形成单元; 具有加热单元的定影器，从交流电源施加交流电压以进行加热; 产生零交叉脉冲的零交叉脉冲发生单元; 电压估计单元，其基于所述过零脉冲的宽度来估计所述交流电压; 温度检测单元，其检测定影器的温度; 加热控制参数设定单元，其基于由电压推定单元估计的交流电压和定影器的温度，设定用于控制加热单元的加热控制参数; 以及加热控制单元，其基于由加热控制参数设定单元设定的加热控制参数来控制加热单元。

公开(公告)号：US20140233266A1

公开(公告)日：2014-08-21

申请号：US14181212

申请日：2014-02-14

申请人： Katsumi INUKAI ,  Hiroyuki NAGANAWA

发明人： Katsumi INUKAI ,  Hiroyuki NAGANAWA

IPC分类号： H02M3/335 ,  G03G15/00

CPC分类号： H02M3/33507 ,  G03G15/80 ,  G03G2215/00983 ,  H02M7/125 ,  H02M2001/0006 ,  H02M2001/0022 ,  H02M2001/0032 ,  Y02B70/16

摘要： A power supply system includes: a switching power supply for converting an AC voltage from an AC power supply into a DC voltage; a latching relay provided on an AC input line for switching a connection state of the switching power supply with the AC power supply in response to a relay drive signal; a control device for generating a relay control signal; a relay drive circuit for generating the relay drive signal in response to an input of the relay control signal and driving the latching relay by the relay drive signal; a battery for supplying electric power to the control device and the relay drive circuit when they are connected; and a switch for switching the connection state of the battery with respect to the control device and the relay drive circuit.

摘要翻译： 电源系统包括：用于将来自交流电源的交流电压转换为直流电压的开关电源; 一个锁存继电器，设置在AC输入线上，用于响应于继电器驱动信号切换开关电源与交流电源的连接状态; 用于产生继电器控制信号的控制装置; 继电器驱动电路，用于响应于所述继电器控制信号的输入而产生所述继电器驱动信号并通过所述继电器驱动信号驱动所述闭锁继电器; 用于在连接时向控制装置和继电器驱动电路供电的电池; 以及用于切换电池相对于控制装置和继电器驱动电路的连接状态的开关。

公开(公告)号：US20100247126A1

公开(公告)日：2010-09-30

申请号：US12731237

申请日：2010-03-25

申请人： Hiroyuki NAGANAWA

发明人： Hiroyuki NAGANAWA

IPC分类号： G03G15/02

CPC分类号： G03G15/0266 ,  G03G15/0291 ,  G03G2215/027

摘要： An image forming apparatus includes: a calculating device configured to, in a testing mode to replace a discharge path between a charging wire and a grid of a charger with a testing resistor having a predetermined resistance, calculate a charge voltage using the resistance of the testing resistor and a detection value by a grid-current detecting circuit; and a controller configured to, in an image forming mode to actually form an image, detect the charge voltage from a feedback voltage using a relation between a value of the feedback voltage which is detected by a charge-voltage detecting circuit in the testing mode and the charge voltage calculated by the calculating device.

摘要翻译： 图像形成装置包括：计算装置，被配置为在具有预定电阻的测试电阻器的充电线和充电器格栅之间的放电路径的测试模式中，使用测试电阻计算充电电压 电阻和电网电流检测电路的检测值; 以及控制器，被配置为以图像形成模式实际形成图像，使用在测试模式中由充电电压检测电路检测的反馈电压的值与从测试模式检测的反馈电压的值之间的关系从反馈电压检测充电电压;以及控制器， 由计算装置计算的充电电压。