公开(公告)号：US06898381B2

公开(公告)日：2005-05-24

申请号：US10286775

申请日：2002-11-04

申请人： Yoichiro Maebashi ,  Tomoaki Nakai ,  Hiroki Tezuka

发明人： Yoichiro Maebashi ,  Tomoaki Nakai ,  Hiroki Tezuka

IPC分类号： G03G15/00 ,  G03G15/01

CPC分类号： G03G15/5058 ,  G03G15/01 ,  G03G15/0131 ,  G03G15/5062 ,  G03G2215/00042 ,  G03G2215/00059 ,  G03G2215/00063 ,  G03G2215/00067 ,  G03G2215/0119

摘要： A color image forming apparatus includes a first density detecting unit for detecting a density of a first detection toner image formed on an image bearing member or a transferring material carrying member, and a second density detecting unit for detecting a density of a second detection toner image fixed onto a transferring material, and executes image density control based on a detection result of the first density detecting unit and a detection result of the second density detecting unit. A detecting light application position of the first density detecting unit and a detection light application position of the second density detecting unit are almost equal relative to a perpendicular direction to a transferring material conveying direction. It is thereby possible to shorten time required for density control and to prevent deterioration of density control accuracy caused by a temporal change and a positional change in the density of a detection toner patch.

摘要翻译： 彩色图像形成装置包括：第一浓度检测单元，用于检测形成在图像承载部件或转印材料承载部件上的第一检测调色剂图像的浓度;以及第二浓度检测单元，用于检测第二检测调色剂图像的浓度 固定在转印材料上，并且基于第一浓度检测单元的检测结果和第二浓度检测单元的检测结果执行图像浓度控制。 第一浓度检测单元的检测光施加位置和第二浓度检测单元的检测光施加位置相对于转印材料输送方向的垂直方向几乎相等。 从而可以缩短密度控制所需的时间并且防止由于时间变化引起的浓度控制精度的劣化和检测调色剂贴片的密度的位置变化。

公开(公告)号：US06564021B1

公开(公告)日：2003-05-13

申请号：US09669901

申请日：2000-09-27

申请人： Tomoaki Nakai ,  Yoichiro Maebashi

发明人： Tomoaki Nakai ,  Yoichiro Maebashi

IPC分类号： G03G1500

CPC分类号： G03G15/0131 ,  G03G15/5054 ,  G03G2215/00059 ,  G03G2215/0119

摘要： An image forming apparatus includes a first image bearing member for bearing an image, a second image bearing member for bearing an image, an intermediate transfer member, wherein, after a plurality of images are sequentially transferred in a first transfer position and a second transfer position from the first image bearing member and the second image bearing member to the intermediate transfer member, the plurality of images on the intermediate transfer member are transferred to a transfer material, and a detector for detecting a first image for detection and a second image for detection transferred from the first image bearing member and the second image bearing member to the intermediate transfer member, wherein the intensity of the electric field formed in the second transfer position when the first image for detection passes through the second transfer position is smaller (e.g. zero) than the intensity of the electric field formed in the second transfer position when the second image for detection is transferred from the second image bearing member to the intermediate transfer member.

摘要翻译： 图像形成装置包括用于承载图像的第一图像承载部件，用于承载图像的第二图像承载部件，中间转印部件，其中，在多个图像在第一转印位置和第二转印位置顺序转印之后， 从第一图像承载构件和第二图像承载构件到中间转印构件，中间转印构件上的多个图像被转印到转印材料上，并且用于检测第一图像以用于检测的检测器和用于检测的第二图像 从第一图像承载部件和第二图像承载部件转移到中间转印部件，其中当第一图像检测通过第二转印位置时在第二转印位置形成的电场的强度较小（例如为零） 比第二转印位置形成的电场的强度高 用于检测的法师从第二图像承载部件传送到中间转印部件。

公开(公告)号：US06985678B2

公开(公告)日：2006-01-10

申请号：US10653944

申请日：2003-09-04

申请人： Yoichiro Maebashi ,  Tomoaki Nakai ,  Hiroki Tezuka

发明人： Yoichiro Maebashi ,  Tomoaki Nakai ,  Hiroki Tezuka

IPC分类号： G03G15/01 ,  G03G15/00

CPC分类号： G03G15/5058 ,  G03G15/0131 ,  G03G15/5041 ,  G03G2215/00059 ,  G03G2215/0119

摘要： A color image forming apparatus and related method forms a color image on a transfer material. The apparatus is provided with a first optical sensor capable of detecting optical reflection characteristics of an unfixed toner image and a second optical sensor capable of detecting optical reflection characteristics of a toner image after fixation. A first forming step forms a mixed-color toner image including plural toners. A calculation step calculates, based on optical reflection characteristics of the mixed-color toner image detected by the second optical sensor, a condition that the mixed-color toner image becomes achromatic. A second forming step forms a toner image corresponding to the calculated toner mixing ratio. A processing step processes an output of the first optical sensor based on the optical reflection characteristics of the monochromatic toner image detected by the first optical sensor.

摘要翻译： 彩色图像形成装置和相关方法在转印材料上形成彩色图像。 该装置设置有能够检测未定影调色剂图像的光学反射特性的第一光学传感器和能够检测固色后调色剂图像的光学反射特性的第二光学传感器。 第一形成步骤形成包括多个调色剂的混色调色剂图像。 计算步骤基于由第二光学传感器检测的混合色调色剂图像的光学反射特性来计算混色调色剂图像变为无色的条件。 第二形成步骤形成对应于计算出的调色剂混合比的调色剂图像。 处理步骤基于由第一光学传感器检测到的单色调色剂图像的光学反射特性来处理第一光学传感器的输出。

公开(公告)号：US06516163B2

公开(公告)日：2003-02-04

申请号：US09940641

申请日：2001-08-29

申请人： Tomoaki Nakai ,  Yoichiro Maebashi

发明人： Tomoaki Nakai ,  Yoichiro Maebashi

IPC分类号： G03G1500

CPC分类号： G03G15/1605 ,  G03G15/0173 ,  G03G15/5054 ,  G03G2215/00059 ,  G03G2215/0177

摘要： An object of the present invention is to provide an image forming apparatus that has an image bearing member, a moving member, transferring device for transferring an image formed on the image bearing member onto the moving member at a transferring position by applying a voltage thereto, and detecting device for detecting an image for density control and an image for gradation control on the moving member transferred from the image bearing member, wherein a density and gradation of the image formed on the image bearing member are controlled on the basis of a result of a detection by the detecting device, and wherein a voltage when the image for density control formed on the image bearing member is transferred onto the moving member and a voltage when the image for gradation control formed on the image bearing member is transferred onto the moving member differ from each other. In addition the image for density control is detected on the moving member before the density image passes through the transferring position, and the image for graduation control is detected on the moving member after the graduation image passes through the transferring position.

摘要翻译： 本发明的目的是提供一种图像形成装置，其具有图像承载部件，移动部件，用于通过施加电压将形成在图像承载部件上的图像转印到移动部件上的转印装置， 以及用于检测用于浓度控制的图像的检测装置和从图像承载部件转印的移动部件上的灰度控制用图像，其中，根据图像承载部件的结果来控制形成在图像承载部件上的图像的浓度和灰度 通过检测装置的检测，并且当将形成在图像承载部件上的用于浓度控制的图像转印到移动部件上时的电压和当在图像承载部件上形成的用于灰度控制的图像被转印到移动部件上时的电压 彼此不同 此外，在浓度图像通过传送位置之前，在移动部件上检测到用于浓度控制的图像，并且在分度图像通过传送位置之后，在移动部件上检测用于分度控制的图像。

公开(公告)号：US06633734B2

公开(公告)日：2003-10-14

申请号：US10062549

申请日：2002-02-05

申请人： Yoichiro Maebashi ,  Koichi Hiroshima ,  Tomoaki Nakai

发明人： Yoichiro Maebashi ,  Koichi Hiroshima ,  Tomoaki Nakai

IPC分类号： G03G1500

CPC分类号： G03G15/5058 ,  G03G2215/00042

摘要： An image forming apparatus has an image bearing member, and a density detecting device for detecting the density of an image for density detection formed on the image bearing member. Image forming conditions are controlled on the basis of an output from the density detecting device. The density detecting device has a regular reflection type density detecting device for detecting the density by regular reflection light from a portion to be detected, and a diffuse reflection type density detecting device for detecting the density by diffuse reflection light from the portion to be detected. The output value from the diffuse reflection type density detecting device is corrected on the basis of the output value from the regular reflection type density detecting device which has detected a reference image, and the output value from the diffuse reflection type density detecting device which has detected the reference image.

摘要翻译： 图像形成装置具有图像承载部件和用于检测形成在图像承载部件上的用于浓度检测的图像的浓度的浓度检​​测装置。 基于密度检测装置的输出来控制图像形成条件。 密度检测装置具有通过来自待检测部分的正反射光检测浓度的正反射型密度检测装置和用于通过来自待检测部分的漫反射光检测浓度的漫反射型浓度检测装置。 来自漫反射型浓度检测装置的输出值根据检测出基准图像的正反射型浓度检测装置的输出值和检测到的漫反射型浓度检测装置的输出值进行校正 参考图片。

公开(公告)号：US06505012B2

公开(公告)日：2003-01-07

申请号：US09940493

申请日：2001-08-29

申请人： Yoichiro Maebashi ,  Tomoaki Nakai

发明人： Yoichiro Maebashi ,  Tomoaki Nakai

IPC分类号： G03G1500

CPC分类号： G03G15/5041 ,  G03G2215/00042 ,  G03G2215/0177 ,  G03G2221/183

摘要： An image forming apparatus is capable of continuously forming images with proper density without reducing the image forming speed and, retrains toner consumption. A CPU for calculating an image forming condition by a density sensor is provided. The image forming operation is conducted in basis of a calculated new image forming condition and a current image forming condition used prior to the calculation of a new image forming condition in the image forming operation so as to determine an available image forming condition.

摘要翻译： 图像形成装置能够连续地形成具有适当密度的图像，而不会降低图像形成速度，并且重新调节墨粉消耗。 提供了一种通过密度传感器计算图像形成条件的CPU。 图像形成操作是基于在图像形成操作中计算新的图像形成条件之前使用的计算的新的图像形成条件和当前的图像形成条件进行的，以便确定可用的图像形成条件。

公开(公告)号：US20120148286A1

公开(公告)日：2012-06-14

申请号：US13304926

申请日：2011-11-28

申请人： Masahide Hirai ,  Tomoaki Nakai ,  Yasutaka Yagi

发明人： Masahide Hirai ,  Tomoaki Nakai ,  Yasutaka Yagi

IPC分类号： G03G15/00 ,  G03G15/16

CPC分类号： G03G15/161 ,  G03G2215/0129 ,  G03G2215/1661

摘要： In an image forming apparatus, a control unit is capable of carrying out a cleaning mode with a first step of allowing an image forming unit to form, on an image bearing member, a cleaning toner image with a length according to a length of a feeding member or conveying member in a direction orthogonal to a conveyance direction of the recording material, a second step of moving the cleaning toner image from the image bearing member to a transfer member, and a third step of moving the cleaning toner image from the transfer member to the image bearing member. This allows the transfer member to be efficiently cleaned, providing appropriate images prevented from suffering a transfer failure.

摘要翻译： 在图像形成装置中，控制单元能够执行清洁模式，第一步骤允许图像形成单元在图像承载部件上形成具有根据进给长度的长度的清洁调色剂图像 构件或输送构件，沿与记录材料的输送方向正交的方向，将清洁调色剂图像从图像承载构件移动到转印构件的第二步骤;以及第三步骤，将清洁调色剂图像从转印构件 到图像承载部件。 这样可以有效地清洁转印部件，从而提供适当的图像，防止转印失败。

公开(公告)号：US20110243599A1

公开(公告)日：2011-10-06

申请号：US13075754

申请日：2011-03-30

申请人： Kimitaka Ichinose ,  Takao Kume ,  Hiroyuki Kadowaki ,  Tomoaki Nakai

发明人： Kimitaka Ichinose ,  Takao Kume ,  Hiroyuki Kadowaki ,  Tomoaki Nakai

IPC分类号： G03G15/16 ,  G03G15/01

CPC分类号： G03G21/0064

摘要： An image forming apparatus including, a plurality of image bearing members, a plurality of developing units which includes toner storage containers and a belt transferring toner images onto a transfer material, the image forming apparatus being capable of executing a first cleaning mode and a second cleaning mode to move the toner adhering onto the belt onto the image bearing members and to collect the adhering toner into the toner storage containers, wherein, in the first cleaning mode, the adhering toner is collected into the toner storage container of the developing unit developing a black toner, and in the second cleaning mode, a portion of the adhering toner is collected into the toner storage container corresponding to the image bearing member located at a most upstream position and a rest of the adhering toner is collected into the toner storage container of the developing unit developing the black toner.

摘要翻译： 一种图像形成装置，包括多个图像承载部件，多个显影单元，包括调色剂存储容器和将调色剂图像转印到转印材料上的带，所述图像形成装置能够执行第一清洁模式和第二清洁 将附着在带上的调色剂移动到图像承载部件上并将粘附的调色剂收集到调色剂储存容器中的方式，其中在第一清洁模式中，粘附的调色剂被收集到显影单元的调色剂存储容器中， 黑色调色剂，并且在第二清洁模式中，粘附的调色剂的一部分被收集到与位于最上游位置的图像承载部件相对应的调色剂存储容器中，并且其余粘附的调色剂被收集到调色剂存储容器 显影单元显影黑色调色剂。

公开(公告)号：US20090296147A1

公开(公告)日：2009-12-03

申请号：US12470608

申请日：2009-05-22

申请人： Tatsuya Kinukawa ,  Hitoshi Furukawa ,  Takao Kume ,  Kazuhiro Funatani ,  Masahide Hirai ,  Yoshiro Saito ,  Tomoaki Nakai

发明人： Tatsuya Kinukawa ,  Hitoshi Furukawa ,  Takao Kume ,  Kazuhiro Funatani ,  Masahide Hirai ,  Yoshiro Saito ,  Tomoaki Nakai

IPC分类号： G06F15/00

CPC分类号： G03G15/5058 ,  G03G15/0131 ,  G03G15/1605 ,  G03G15/5054 ,  G03G2215/00059 ,  G03G2215/00063

摘要： There is provided an image forming apparatus which shortens the time taken for circumference detection and measures the circumference at high precision without obstructing downsizing of the apparatus. To accomplish this, the image forming apparatus detects, at an arbitrary timing, the physical pattern of the image-formed surface of a rotation member that changes over time. In the second round, the image forming apparatus detects the second pattern at a timing a predetermined time after the arbitrary timing. By using the detected patterns, the image forming apparatus obtains information associated with the circumference of the rotation member.

摘要翻译： 提供了一种图像形成装置，其缩短了圆周检测所用的时间，并且高精度地测量圆周，而不会妨碍装置的小型化。 为了实现这一点，图像形成装置在任意定时检测随时间变化的旋转构件的图像形成表面的物理图案。 在第二轮中，图像形成装置在任意定时之后的预定时间的定时检测第二图案。 通过使用检测到的图案，图像形成装置获得与旋转构件的圆周相关联的信息。

公开(公告)号：US20090269095A1

公开(公告)日：2009-10-29

申请号：US12429997

申请日：2009-04-24

申请人： Keisuke Mitsuhashi ,  Michio Uchida ,  Shoichi Zensai ,  Youhei Suzuki ,  Tomonori Shida ,  Takeshi Shinji ,  Tomoaki Nakai

发明人： Keisuke Mitsuhashi ,  Michio Uchida ,  Shoichi Zensai ,  Youhei Suzuki ,  Tomonori Shida ,  Takeshi Shinji ,  Tomoaki Nakai

IPC分类号： G03G15/16

CPC分类号： G03G15/5095 ,  G03G15/1665 ,  G03G15/6564 ,  G03G2215/00409 ,  G03G2215/00945

摘要： The speed at which transfer-material enters a transfer region is controlled to prevent a phenomenon in which a toner image on an intermediate transfer belt is scraped by the leading edge of the transfer-material when the toner image is transferred onto the transfer-material. While the conveying speed of the transfer-material in a transfer nip coincides with the speed of the intermediate transfer belt, the transfer-material is conveyed at a speed lower than the peripheral speed of the intermediate transfer belt when the leading edge of the transfer-material comes into contact with the intermediate transfer belt, and the conveying speed of the transfer-material is increased by the time when the transfer-material enters the transfer nip.

摘要翻译： 控制转印材料进入转印区域的速度，以防止当调色剂图像转印到转印材料上时转印材料的前端刮过中间转印带上的调色剂图像的现象。 当转印料中转印材料的转印速度与中间转印带的速度重合时，转印材料的输送速度低于中间转印带的圆周速度时， 材料与中间转印带接触，并且当转印材料进入转印辊隙时转印材料的输送速度增加。