公开(公告)号：US09513585B2

公开(公告)日：2016-12-06

申请号：US14837587

申请日：2015-08-27

申请人： Keita Sone ,  Tomohide Takenaka

发明人： Keita Sone ,  Tomohide Takenaka

IPC分类号： G03G15/00 ,  G03G21/20 ,  G03G15/043

CPC分类号： G03G15/5037 ,  G03G15/043 ,  G03G21/20 ,  G03G21/203 ,  G03G2215/00054

摘要： An image forming apparatus includes a latent image bearer; a charger; an exposure device; a developing device; a potential detector to detect a surface potential at a detection position between an exposure position and a development position on the latent image bearer in a direction of rotation of the latent image bearer; and a potential controller to determine an image forming condition. The potential controller includes a potential calculator to calculate an exposed area potential based on a detected potential smaller in charging polarity than a potential threshold, out of the detected surface potential, and a threshold determiner to set the potential threshold between the exposed area potential and an unexposed area potential of the latent image bearer based on at least one of a change in the unexposed area potential, a change with time of the latent image bearer, and a change in an ambient condition.

摘要翻译： 图像形成装置包括潜像载体; 充电器 曝光装置; 显影装置; 电位检测器，用于检测在所述潜像载体的旋转方向上的所述潜像载体上的曝光位置和显影位置之间的检测位置处的表面电位; 以及用于确定图像形成条件的电位控制器。 电位控制器包括：电位计算器，用于基于在检测到的表面电位以外的电位极性小于电位阈值的检测电位来计算曝光区域电位;以及阈值确定器，用于将暴露区域电位和 基于未曝光区域电位的变化，潜像载体的随时间的变化以及环境条件的变化中的至少一个，潜像载体的未曝光区域电位。

公开(公告)号：US20150117887A1

公开(公告)日：2015-04-30

申请号：US14592775

申请日：2015-01-08

申请人： CANON KABUSHIKI KAISHA

发明人： Hiroshi Hagiwara ,  Takamitsu Soda ,  Akinobu Hirayama ,  Hiromitsu Kumada ,  Yoshiko Kubo ,  Takateru Ohkubo

IPC分类号： G03G15/043 ,  G03G15/01

CPC分类号： G03G15/5033 ,  G03G15/011 ,  G03G15/0131 ,  G03G15/0189 ,  G03G15/043 ,  G03G15/045 ,  G03G15/5037 ,  G03G15/5058 ,  G03G21/08 ,  G03G2215/00054 ,  G03G2215/00059 ,  G03G2215/0132 ,  G03G2215/0161 ,  H04N1/506

摘要： An image forming apparatus includes a process unit arranged in the vicinity of the circumference of each photosensitive member and the process unit is configured to act on the photosensitive member in forming a toner image thereon. The image forming apparatus detects a time period since a laser beam emission unit emits a laser beam to the photosensitive member to form an electrostatic latent image for detection until the formed electrostatic latent image for detection or a toner image based on the electrostatic latent image for detection reaches the process unit, and performs color misregistration correction control based on the result of detection. In this case, a control unit at least decreases the light amount of a pre-exposure LED when the electrostatic latent image for detection passes through a position facing the pre-exposure LED.

摘要翻译： 图像形成装置包括布置在每个感光构件的圆周附近的处理单元，并且处理单元构造成在其上形成调色剂图像上作用于感光构件。 图像形成装置检测由于激光束发射单元向感光构件发射激光束以形成用于检测的静电潜像的时间段，直到形成的用于检测的静电潜像或基于用于检测的静电潜像的调色剂图像 到达处理单元，并且基于检测结果执行颜色对准校正​​控制。 在这种情况下，当用于检测的静电潜像通过面对预曝光LED的位置时，控制单元至少减小预曝光LED的光量。

公开(公告)号：US08705993B2

公开(公告)日：2014-04-22

申请号：US13295522

申请日：2011-11-14

申请人： Yuri Mori ,  Yoshihiro Shigemura ,  Ryo Inoue

发明人： Yuri Mori ,  Yoshihiro Shigemura ,  Ryo Inoue

IPC分类号： G03G15/00 ,  G03G15/16

CPC分类号： G03G15/5037 ,  G03G15/0131 ,  G03G15/0189 ,  G03G2215/00054 ,  G03G2215/0129 ,  G03G2215/0161

摘要： An image forming apparatus includes movable first and second image bearing members, latent image forming units that form electrostatic latent images and latent index patterns, a movable belt member contacting the image bearing members, toner image transfer members that transfer toner images, obtained by depositing toner on the latent images, onto the belt member, latent pattern detectors that detect the latent index patterns, an adjusting portion that adjusts relative positions between the latent index patterns on the basis of detection results of the detectors, and a setting portion that sets a latent pattern transfer voltage, during image formation, on the basis of a detection result of one of the latent pattern detectors on condition that a plurality of test voltages are applied to one of the latent pattern transfer member during non-image formation.

摘要翻译： 图像形成装置包括可移动的第一和第二图像承载部件，形成静电潜像和潜在索引图案的潜像形成单元，与图像承载部件接触的可移动带部件，转印调色剂图像的调色剂图像转印部件， 在潜像上，在皮带构件上，检测潜指标图案的潜图图案检测器，基于检测器的检测结果来调整潜指标图案之间的相对位置的调整部分和设定潜伏图 在图像形成期间，基于在非图像形成期间将多个测试电压施加到潜在图案转印构件中的一个的条件，基于一个潜在图案检测器的检测结果。

公开(公告)号：US20130016988A1

公开(公告)日：2013-01-17

申请号：US13638023

申请日：2011-03-16

申请人： Sumito Tanaka

发明人： Sumito Tanaka

IPC分类号： G03G13/06 ,  G03G15/06

CPC分类号： G03G15/5037 ,  G03G15/5041 ,  G03G2215/00042 ,  G03G2215/00054

摘要： An image forming apparatus and a control method thereof are provided that determine a final contrast potential taking into consideration not only the relationship between the contrast potential of an electrostatic latent image and the density value of a developed image but also a toner charge amount for developing the electrostatic latent image. To accomplish this, the image forming apparatus of the present invention predicts, in advance, the contrast potential of the electrostatic latent image and the density of the toner image at the contrast potential for a predetermined toner charge amount. Furthermore, the image forming apparatus forms an image by adjusting the relationship between the contrast potential and density measured in advance based on a current toner charge amount and a saturation toner charge amount when forming the image.

摘要翻译： 提供一种图像形成装置及其控制方法，其不仅考虑静电潜像的对比度电位和显影图像的浓度值之间的关系，而且考虑显影图像的调色剂带电量 静电潜像。 为了实现这一点，本发明的图像形成装置预先预测静电潜像的对比度电位和调色剂图像在预定调色剂充电量下的对比度电位下的浓度。 此外，图像形成装置通过在形成图像时基于当前调色剂充电量和饱和色调剂电荷量调整对比度电位和预先测量的浓度之间的关系来形成图像。

公开(公告)号：US20120121283A1

公开(公告)日：2012-05-17

申请号：US13295522

申请日：2011-11-14

申请人： Yuri Mori ,  Yoshihiro Shigemura ,  Ryo Inoue

发明人： Yuri Mori ,  Yoshihiro Shigemura ,  Ryo Inoue

IPC分类号： G03G15/16 ,  G03G15/01

CPC分类号： G03G15/5037 ,  G03G15/0131 ,  G03G15/0189 ,  G03G2215/00054 ,  G03G2215/0129 ,  G03G2215/0161

摘要： An image forming apparatus includes a plurality of image bearing members; an electrostatic image forming portion; a belt member; an electrostatic image transfer member for transferring an electrostatic index image, onto an electrostatic image transfer area located adjacent to an image area of a toner image with respect to a widthwise direction of the belt member, formed on the upstreammost image bearing member with respect to a rotational direction of the belt member; an antenna potential sensor for detecting an induced current of the electrostatic index image; a controller for controlling superposition of the toner images through detection of the electrostatic index image; and a setting portion on the basis of a detection result of the electrostatic index image which is formed during non image formation.

摘要翻译： 图像形成装置包括多个图像承载部件; 静电图像形成部; 带构件; 静电图像转印部件，其用于将静电图像转印到相对于带部件的宽度方向相对于调色剂图像的图像区域邻近的静电图像转印区域，所述静电图像转印区域形成在上游图像承载部件上，相对于 带构件的旋转方向; 用于检测静电指数图像的感应电流的天线电位传感器; 控制器，用于通过检测静电指数图像来控制调色剂图像的叠加; 以及基于在非图像形成期间形成的静电指数图像的检测结果的设置部分。

公开(公告)号：US20120107024A1

公开(公告)日：2012-05-03

申请号：US13281015

申请日：2011-10-25

申请人： Hisae Shimizu ,  Ichiro Okumura

发明人： Hisae Shimizu ,  Ichiro Okumura

IPC分类号： G03G15/01

CPC分类号： G03G15/0189 ,  G03G15/0131 ,  G03G15/5037 ,  G03G2215/00054 ,  G03G2215/0129 ,  G03G2215/0161

摘要： An image forming apparatus includes image bearing members; a belt member contacting the image bearing members; electrostatic image forming portions for forming electrostatic images on the image bearing members; developing portions for forming toner images on the basis of the electrostatic images formed on the image bearing members; a first transfer portion for transferring the toner image and an electrostatic image index; a second transfer portion for transferring the toner image onto the belt member; a first detecting portion for detecting the electrostatic image index; a second detecting portion for detecting an electrostatic image index formed on a second image bearing member; an adjusting portion for adjusting a forming operation on the belt member on the basis of outputs of the first and second detecting portions; and a belt member charging portion for electrically charging the belt member before transfer of the electrostatic image index.

摘要翻译： 图像形成装置包括图像承载部件; 与图像承载部件接触的带部件; 用于在图像承载部件上形成静电图像的静电图像形成部分; 基于形成在图像承载部件上的静电图像形成调色剂图像的显影部分; 用于转印调色剂图像和静电图像索引的第一转印部分; 用于将调色剂图像转印到带构件上的第二转印部分; 用于检测静电图像索引的第一检测部分; 用于检测形成在第二图像承载部件上的静电图像索引的第二检测部分; 调整部，其基于第一和第二检测部的输出调节带部件上的成形动作; 以及用于在转印静电图像索引之前对带部件进行充电的带部件充电部分。

公开(公告)号：US20070086801A1

公开(公告)日：2007-04-19

申请号：US11546892

申请日：2006-10-13

申请人： Shingo Sakato ,  Ai Takagami ,  Eiji Nimura ,  Hiroyuki Hamakawa ,  Yoshinori Horiuchi ,  Masashi Fujishima

发明人： Shingo Sakato ,  Ai Takagami ,  Eiji Nimura ,  Hiroyuki Hamakawa ,  Yoshinori Horiuchi ,  Masashi Fujishima

IPC分类号： G03G15/02 ,  G03G15/06

CPC分类号： G03G15/5037 ,  G03G2215/00054

摘要： In an image forming apparatus, a control section 41 adjusts the surface potential of a photoconductor or the developing potential of a developer carrying member based on the detection result of a surface potential sensor 44, and performs first correction whereby, relative to the reference value of the applied bias of a charger 2 or the developing bias of the developer carrying member in a developing unit 4 as observed during potential adjustment, the applied bias or the developing bias is varied so as to keep constant the potential difference between the surface potential of the photoconductor and the developing potential of the developer carrying member during image formation. The control section also performs second correction whereby the applied bias or the developing bias is restored to the reference value over a predetermined period after the completion of continuous image formation.

摘要翻译： 在图像形成装置中，控制部41基于表面电位传感器44的检测结果来调整感光体的表面电位或显影剂承载部件的显影电位，并进行第一校正，由此相对于 充电器2的施加偏压或显影单元4中的显影剂承载构件的显影偏压，如在电位调节期间所观察到的，所施加的偏压或显影偏压被改变，以便保持恒定的表面电位 感光体和图像形成期间显影剂承载构件的显影电位。 控制部分还执行第二校正，由此在连续图像形成完成之后的预定时间段内施加的偏压或显影偏压恢复到参考值。

公开(公告)号：US20040170440A1

公开(公告)日：2004-09-02

申请号：US10720234

申请日：2003-11-25

申请人： Canon Kabushiki Kaisha

发明人： Fumitake Hirobe ,  Shigeo Kimura

IPC分类号： G03G015/00 ,  G03G015/08

CPC分类号： G03G15/5041 ,  G03G15/5037 ,  G03G2215/00042 ,  G03G2215/00054

摘要： An image forming apparatus comprises an image bearing member, developing portion for developing by developer an electrostatic latent image formed on the image bearing member, potential detection portion for detecting the potential of the electrostatic latent image on the image bearing member for detection use, potential control portion for controlling the electrostatic latent image for detection use in accordance with the output of the potential detection portion, and density detection portion for detecting the density of a developer image for detection use. For this image forming apparatus, the density detection portion detects the density of a developer image for detection use obtained by developing by the developing portion an electrostatic latent image for detection use which is potentially controlled by the potential control portion. The structure thus arranged makes it possible to execute the developer replenishing control to the developing device in good condition, and suppress the fluctuation of image density, hence contributing to the maintenance of high quality image significantly.

摘要翻译： 图像形成装置包括图像承载部件，显影部分，用于显影形成在图像承载部件上的静电潜像;电位检测部分，用于检测用于检测用途的图像承载部件上的静电潜像的电位，电位控制 用于根据电位检测部分的输出控制用于检测的静电潜像的部分，以及用于检测用于检测用途的显影剂图像的浓度的浓度检​​测部分。 对于该图像形成装置，密度检测部分检测由显影部分显影获得的用于检测用途的显影剂图像的浓度，该静电潜像由潜在的控制部分潜在地控制。 这样安排的结构使得可以在良好的状态下对显影装置执行显影剂补充控制，并且抑制图像浓度的波动，从而有助于维持高质量的图像。

公开(公告)号：US06505010B1

公开(公告)日：2003-01-07

申请号：US07933651

申请日：1992-08-24

申请人： Masami Izumizaki ,  Yoshinori Nagao

发明人： Masami Izumizaki ,  Yoshinori Nagao

IPC分类号： G03G1501

CPC分类号： G03G15/0126 ,  G03G2215/00042 ,  G03G2215/00054 ,  G03G2215/00063 ,  G03G2215/0119 ,  H04N1/6033

摘要： An image forming apparatus forming a full color image by plural color materials. An image of an original is color-separated so as to form a color separation signal, and the color separation signal is converted to a color signal corresponding to each color material. The color signal is color-corrected so as to correct a color mixing state of the plural color materials, and a color image is formed by the corrected color signal. A test image of single color is formed, and a density of the test image is detected. Control is performed on a correcting condition for color-correcting the color signed based on the detected density. The correction to the color signal is delayed until toner is supplemented to the developing device.

摘要翻译： 一种通过多种颜色材料形成全色图像的图像形成装置。 原件的图像被颜色分离以形成颜色分离信号，并且将颜色分离信号转换成对应于每种颜色材料的颜色信号。 对颜色信号进行颜色校正，以校正多种颜色材料的混色状态，并通过校正的颜色信号形成彩色图像。 形成单色的测试图像，并且检测测试图像的浓度。 基于检测出的密度对颜色进行颜色校正的校正条件进行控制。 颜色信号的校正被延迟直到调色剂补充到显影装置。

公开(公告)号：US20020113856A1

公开(公告)日：2002-08-22

申请号：US09904093

申请日：2001-07-13

申请人： Fuji Xerox Co., Ltd.

发明人： Takayoshi Suzuki

IPC分类号： G03G015/043

CPC分类号： G03G15/5058 ,  G03G15/0131 ,  G03G15/5037 ,  G03G2215/00054 ,  G03G2215/00059 ,  G03G2215/00067 ,  G03G2215/0119 ,  G03G2215/0151 ,  H04N1/4015

摘要： Based on the density of an image formed on a photosensitive member or an image recording medium, an amount of correction for uniformalizing the image density in a main scanning direction of a light beam is set. Based on the set amount of correction, the intensity of a light beam in an image region is corrected within a range of one main scan.

摘要翻译： 基于形成在感光构件或图像记录介质上的图像的浓度，设置用于使光束的主扫描方向上的图像浓度均匀化的校正量。 基于设定的校正量，在一次主扫描的范围内校正图像区域中的光束的强度。