公开(公告)号：US5327196A

公开(公告)日：1994-07-05

申请号：US981410

申请日：1992-11-25

申请人： Shinji Kato ,  Yasushi Koichi ,  Shin Hasegawa

发明人： Shinji Kato ,  Yasushi Koichi ,  Shin Hasegawa

IPC分类号： G03G15/00 ,  G03G15/08

CPC分类号： G03G15/0855 ,  G03G15/5041 ,  G03G15/556 ,  G03G2215/00118

摘要： In an image forming method using an electrophotographic process, an amount of toner to be supplemented for maintaining a desired image density is estimated in response to input data which are a ratio of reflection densities produced by an optical sensor responsive to a pattern for control and an estimated toner consumption signal. Toner supplement control is executed on the basis of the result of estimation. The method sharply responds to a change in environment due to aging and a change in the kind of documents to thereby insure stable image density, compared to a conventional method relaying on an optical sensor or a toner sensor.

摘要翻译： 在使用电子照相方法的图像形成方法中，响应于作为响应于用于控制的图案的光学传感器产生的反射密度的比率的输入数据来估计补充用于保持所需图像浓度的调色剂的量，以及 估计墨粉消耗信号。 基于估计结果执行调色剂补充控制。 与在光学传感器或调色剂传感器上传送的常规方法相比，该方法对由于老化引起的环境变化和文档种类的改变而急剧响应，从而确保稳定的图像浓度。

公开(公告)号：US5387965A

公开(公告)日：1995-02-07

申请号：US987816

申请日：1992-12-09

申请人： Shin Hasegawa ,  Yasushi Koichi ,  Shinji Kato

发明人： Shin Hasegawa ,  Yasushi Koichi ,  Shinji Kato

IPC分类号： G03G15/00 ,  G03G15/08 ,  G03G21/00

CPC分类号： G03G15/0855 ,  G03G15/0849

摘要： A toner density control method senses the concentration of a toner image for control formed on a photoconductive element by an optical sensor and, based on the output of the sensor, corrects a target target toner concentration for toner supplement control to be effected in response to an output of a toner concentration sensor mounted on a developing device. When the output Vs of the optical sensor is determined to be greater than a reference value Vs.sub.0 (short toner deposition), the reference value Vt.sub.0 is corrected to smaller one. When Vs determined to be smaller than Vs.sub.0 (excessive toner deposition), Vt.sub.0 is corrected to greater one. In each of such cases, a predetermined amount n.multidot..DELTA.VT is subtracted from or added to the output Vt of the toner concentration sensor of that instant.

摘要翻译： 调色剂浓度控制方法通过光学传感器检测用于在光电导元件上形成的控制的调色剂图像的浓度，并且基于传感器的输出，校正调色剂补充控制的目标调色剂浓度以响应于 输出安装在显影装置上的调色剂浓度传感器。 当光学传感器的输出Vs被确定为大于参考值Vs0（短调色剂沉积）时，参考值Vt0被校正为较小的一个。 当Vs确定为小于Vs0（过度的调色剂沉积）时，Vt0被校正为更大。 在这些情况的每一种情况下，从该时刻的调色剂浓度传感器的输出Vt中减去预定量的n×DELTA VT。

公开(公告)号：US20070248368A1

公开(公告)日：2007-10-25

申请号：US11738342

申请日：2007-04-20

申请人： Shinji Kato ,  Koji Suzuki ,  Yasushi Koichi ,  Shigekazu Enoki ,  Wakako Murakami ,  Kumiko Hatakeyama

发明人： Shinji Kato ,  Koji Suzuki ,  Yasushi Koichi ,  Shigekazu Enoki ,  Wakako Murakami ,  Kumiko Hatakeyama

IPC分类号： G03G15/08

CPC分类号： G03G15/0844 ,  G03G15/0853 ,  G03G15/0893 ,  G03G15/5058

摘要： An image forming apparatus includes an image carrier, a developing unit, a concentration sensor, a toner supplying unit, a developer supplying unit, an ejector, and a condition detector. The image carrier forms a latent image thereon. The developing unit develops the latent image formed on the image carrier with a two-component image developer including toner particles and carrier particles. The concentration sensor detects a toner ratio in the developing unit. The toner supplying unit supplies fresh toner particles to the developing unit. The developer supplying unit supplies fresh image developer to the developing unit. The ejector ejects the image developer to an outside of the developing unit. The condition detector detects a condition of the image developer used for an image forming operation to determine a supply amount of the image developer to supply to the developing unit. The condition includes a degradation level of the image developer.

摘要翻译： 图像形成装置包括图像载体，显影单元，浓度传感器，调色剂供给单元，显影剂供给单元，喷射器和条件检测器。 图像载体在其上形成潜像。 显影单元用包含调色剂颗粒和载体颗粒的双组分图像显影剂显影在图像载体上形成的潜像。 浓度传感器检测显影单元中的调色剂比。 调色剂供应单元向显影单元供应新鲜的调色剂颗粒。 显影剂供应单元向显影单元提供新鲜图像显影剂。 喷射器将图像显影剂喷射到显影单元的外部。 条件检测器检测用于图像形成操作的图像显影剂的状态，以确定供应给显影单元的图像显影剂的供给量。 该条件包括图像显影剂的劣化水平。

公开(公告)号：US5508787A

公开(公告)日：1996-04-16

申请号：US233925

申请日：1994-04-28

申请人： Shin Hasegawa ,  Yasushi Koichi

发明人： Shin Hasegawa ,  Yasushi Koichi

IPC分类号： G03G15/00 ,  G03G15/02 ,  G03G15/04 ,  G03G15/043 ,  G03G21/00

CPC分类号： G03G15/5037 ,  G03G15/0266 ,  G03G15/043

摘要： In an image forming apparatus, a voltage for a charger, a voltage for a light source for exposure or similar process condition for image formation is controlled such that a control parameter particular to image formation, e.g., the surface potential of an image carrier (light portion or dark portion) or the amount of toner deposited on the image carrier lies in a first predetermined tolerance width of a target value. Subsequently, the process condition is controlled such that the control parameter lies in a second predetermined tolerance width of the target value which is narrower than the first tolerance width. As a result, the control parameter is confined in the second tolerance width for achieving the final control accuracy.

摘要翻译： 在图像形成装置中，控制用于充电器的电压，用于曝光的光源的电压或用于图像形成的类似处理条件的电压，使得特定于图像形成的控制参数，例如图像载体的表面电位（光 部分或暗部）或沉积在图像载体上的调色剂的量位于目标值的第一预定公差宽度中。 随后，控制处理条件使得控制参数位于比第一公差宽度窄的目标值的第二预定公差宽度中。 结果，控制参数被限制在第二公差宽度中以实现最终的控制精度。

公开(公告)号：US07639957B2

公开(公告)日：2009-12-29

申请号：US11738342

申请日：2007-04-20

申请人： Shinji Kato ,  Koji Suzuki ,  Yasushi Koichi ,  Shigekazu Enoki ,  Wakako Murakami ,  Kumiko Hatakeyama

发明人： Shinji Kato ,  Koji Suzuki ,  Yasushi Koichi ,  Shigekazu Enoki ,  Wakako Murakami ,  Kumiko Hatakeyama

IPC分类号： G03G15/08

CPC分类号： G03G15/0844 ,  G03G15/0853 ,  G03G15/0893 ,  G03G15/5058

摘要： An image forming apparatus includes an image carrier, a developing unit, a concentration sensor, a toner supplying unit, a developer supplying unit, an ejector, and a condition detector. The image carrier forms a latent image thereon. The developing unit develops the latent image formed on the image carrier with a two-component image developer including toner particles and carrier particles. The concentration sensor detects a toner ratio in the developing unit. The toner supplying unit supplies fresh toner particles to the developing unit. The developer supplying unit supplies fresh image developer to the developing unit. The ejector ejects the image developer to an outside of the developing unit. The condition detector detects a condition of the image developer used for an image forming operation to determine a supply amount of the image developer to supply to the developing unit. The condition includes a degradation level of the image developer.

摘要翻译： 图像形成装置包括图像载体，显影单元，浓度传感器，调色剂供给单元，显影剂供给单元，喷射器和条件检测器。 图像载体在其上形成潜像。 显影单元用包含调色剂颗粒和载体颗粒的双组分图像显影剂显影在图像载体上形成的潜像。 浓度传感器检测显影单元中的调色剂比。 调色剂供应单元向显影单元供应新鲜的调色剂颗粒。 显影剂供应单元向显影单元提供新鲜图像显影剂。 喷射器将图像显影剂喷射到显影单元的外部。 条件检测器检测用于图像形成操作的图像显影剂的状态，以确定供应给显影单元的图像显影剂的供给量。 该条件包括图像显影剂的劣化水平。

公开(公告)号：US20050079430A1

公开(公告)日：2005-04-14

申请号：US11002218

申请日：2004-12-03

申请人： Mitsuo Aoki ,  Kumi Hasegawa ,  Toshiaki Higaya ,  Yasushi Koichi ,  Yutaka Takahashi ,  Tadashi Kasai

发明人： Mitsuo Aoki ,  Kumi Hasegawa ,  Toshiaki Higaya ,  Yasushi Koichi ,  Yutaka Takahashi ,  Tadashi Kasai

IPC分类号： G03G9/08 ,  G03G9/087 ,  G03G13/20 ,  G03G15/08 ,  G03G15/02 ,  G03G15/20

CPC分类号： G03G9/08797 ,  G03G9/0819 ,  G03G9/0821 ,  G03G9/08755 ,  G03G9/08793 ,  G03G9/08795 ,  G03G13/20

摘要： An image forming method, comprising passing a toner image-bearing sheet through a nip defined between two rollers including a heater roller to fix the toner image on the sheet, wherein the toner image is formed from a toner comprising a binder resin, and a colorant, wherein the toner image before the passage through the nip has a toner volume V1 and a toner image area S1, wherein the toner image after the passage through the nip has a toner volume V2 and a toner image area S2, and wherein a volume change Vt and an area change St defined by the formulas shown below are 30% or less and 20% or less, respectively: Vt(%)=(V1−V2)/V1×100 St(%)=(S2−S1)/S1×100. Alternatively, the toner image before the passage through the nip has a surface roughness of 2.5 μm or less.

摘要翻译： 一种图像形成方法，包括使调色剂承载片材通过在包括加热辊的两个辊之间限定的辊隙以将调色剂图像定影在片材上，其中调色剂图像由包含粘合剂树脂的调色剂和着色剂形成 其中，通过所述辊隙的通过前的调色剂图像具有调色剂体积V1和调色剂图像区域S1，其中通过所述辊隙的调色剂图像具有调色剂体积V2和调色剂图像面积S2，并且其中体积变化 Vt和由下面所示公式定义的面积变化St分别为30％或更小和20％或更小：Vt（％）=（V1-V2）/ V1x100 St（％）=（S2-S1）/ S1x100。 或者，在通过辊隙的通过之前的调色剂图像具有2.5μm或更小的表面粗糙度。

公开(公告)号：US07499664B2

公开(公告)日：2009-03-03

申请号：US11018760

申请日：2004-12-22

申请人： Yasushi Koichi ,  Koji Suzuki ,  Shigekazu Enoki ,  Osamu Ariizumi ,  Kumiko Hatakeyama

发明人： Yasushi Koichi ,  Koji Suzuki ,  Shigekazu Enoki ,  Osamu Ariizumi ,  Kumiko Hatakeyama

IPC分类号： G03G15/30

CPC分类号： G03G21/0029 ,  G03G2221/183

摘要： A transfer residual toner that has not been electrostatically transferred onto a transfer paper P at a transfer nip and remains on a surface of a photosensitive element is temporarily retained by an elastic blade of a toner retaining unit in a mechanical manner before reaching a latent image forming area. When passing through the latent image forming area, the transfer residual toner is returned onto the surface of the photosensitive member at such a timing that writing is not performed by an exposing unit on the surface of the photosensitive element.

摘要翻译： 没有静电转印到转印纸上的转印残留调色剂，并保持在感光元件的表面上，在达到潜像形成之前，机械地由调色剂保持单元的弹性刮刀暂时保留 区。 当通过潜像形成区域时，转印残留调色剂在感光元件表面上的曝光单元不进行写入的时刻返回到感光部件的表面上。

公开(公告)号：US20070286652A1

公开(公告)日：2007-12-13

申请号：US11832848

申请日：2007-08-02

申请人： Koji SUZUKI ,  Mitsuo Aoki ,  Bing Shu ,  Yasushi Koichi ,  Setsuo Soga ,  Tadashi Kasai ,  Yutaka Takahashi

发明人： Koji SUZUKI ,  Mitsuo Aoki ,  Bing Shu ,  Yasushi Koichi ,  Setsuo Soga ,  Tadashi Kasai ,  Yutaka Takahashi

IPC分类号： G03G15/20

CPC分类号： G03G15/5041 ,  G03G15/00 ,  G03G2215/00033 ,  G03G2215/00071 ,  G03G2215/0602

摘要： An image forming apparatus comprising: a latent image support for supporting a latent image and a developing device configured to us toner to develop the latent image on said latent image support, the estimated average halftone granularity of the toner imager after developing being 0.25 or less.

摘要翻译： 一种图像形成装置，包括：用于支撑潜像的潜像支持体和构造成使所述潜像载体上的潜像显影调色剂的显影装置，显影后的调色剂成像器的估计平均半色调粒度为0.25以下。

公开(公告)号：US20060275688A1

公开(公告)日：2006-12-07

申请号：US11503152

申请日：2006-08-14

申请人： Koji Suzuki ,  Mitsuo Aoki ,  Bing Shu ,  Yasushi Koichi ,  Setsuo Soga ,  Tadashi Kasai ,  Yutaka Takahashi

发明人： Koji Suzuki ,  Mitsuo Aoki ,  Bing Shu ,  Yasushi Koichi ,  Setsuo Soga ,  Tadashi Kasai ,  Yutaka Takahashi

IPC分类号： G03G13/20

CPC分类号： G03G15/5041 ,  G03G15/00 ,  G03G2215/00033 ,  G03G2215/00071 ,  G03G2215/0602

摘要： An electrophotographic image forming apparatus capable of reliably forming an image with density gradation, one which does not have a low-quality appearance. The estimated average halftone granularity of the toner image after developing but before electrostatic transfer was set at 0.25 or less. The average halftone granularity was found by measuring the granularity of a toner image at locations of different average brightness by means of newly proposed formula, and averaging the measured values for which the average brightness is 40 to 80. The estimated average halftone granularity was obtained by estimating the average halftone granularity of the toner image on a photoreceptor by means of a newly proposed method.

摘要翻译： 一种能够可靠地形成具有浓度梯度的图像的电子照相图像形成装置，其不具有低质量的外观。 显影后但静电转印前的调色剂图像的估计的平均半色调粒度设定为0.25以下。 通过新提出的公式通过测量不同平均亮度的位置处的调色剂图像的粒度来求出平均半色调粒度，并将平均亮度为40-80的测量值平均。估计的平均半色调粒度通过 通过新提出的方法估计感光体上调色剂图像的平均半色调粒度。

公开(公告)号：US20050276632A1

公开(公告)日：2005-12-15

申请号：US11150299

申请日：2005-06-13

申请人： Osamu Ariizumi ,  Masahide Yamashita ,  Koji Suzuki ,  Yasushi Koichi ,  Shigekazu Enoki ,  Kumiko Hatakeyama ,  Koichi Kato ,  Toshiyuki Kabata ,  Jun Yura

发明人： Osamu Ariizumi ,  Masahide Yamashita ,  Koji Suzuki ,  Yasushi Koichi ,  Shigekazu Enoki ,  Kumiko Hatakeyama ,  Koichi Kato ,  Toshiyuki Kabata ,  Jun Yura

IPC分类号： G03G9/10 ,  G03G15/00 ,  G03G15/02 ,  G03G15/06 ,  G03G15/08 ,  G03G15/09 ,  G03G21/00 ,  G03G21/14

CPC分类号： G03G21/0064 ,  G03G2215/0119 ,  G03G2215/0607

摘要： An image forming apparatus of the present invention includes a developing device bifunctioning as a cleaning device for collecting toner grains left on a photoconductive drum after the transfer of a toner image from the drum to a paper sheet or similar image transfer medium. In the event of toner collection, a DC voltage is applied that causes the residual toner to move from the drum toward a developing sleeve. A main-pole magnet generates, at a position where the developing sleeve faces the drum, a magnetic field of between 100 mT and 200 mT in a direction normal to the surface of the sleeve.

摘要翻译： 本发明的图像形成装置包括将调色剂图像从滚筒转印到纸张或类似的图像转印介质上之后作为用于收集留在感光鼓上的调色剂颗粒的清洁装置的显影装置。 在调色剂收集的情况下，施加直流电压，使得残留调色剂从鼓向显影套筒移动。 主极磁铁在垂直于套筒表面的方向上在显影套筒面向鼓的位置处产生介于100mT和200mT之间的磁场。