公开(公告)号：US5227842A

公开(公告)日：1993-07-13

申请号：US855092

申请日：1992-03-20

申请人： Kouji Hayashi ,  Takashi Bisaiji ,  Norimitsu Kikuchi ,  Takeyoshi Sekine ,  Noboru Sawayama ,  Takayuki Maruta ,  Tetsuro Miura ,  Kazunori Bannai ,  Kazunari Yamada ,  Nobuhiro Nakayama

发明人： Kouji Hayashi ,  Takashi Bisaiji ,  Norimitsu Kikuchi ,  Takeyoshi Sekine ,  Noboru Sawayama ,  Takayuki Maruta ,  Tetsuro Miura ,  Kazunori Bannai ,  Kazunari Yamada ,  Nobuhiro Nakayama

IPC分类号： G01N21/47 ,  G03G15/00 ,  G03G15/01 ,  G03G15/06 ,  G03G15/08

CPC分类号： G03G15/065 ,  G03G15/0848 ,  G03G15/5041 ,  G03G2215/00042

摘要： An image forming apparatus having a developing device of the type using a two-component type developer and developing an electrostatic latent image by a bias electric field having an alternating electric field. A predetermined reference latent image is electrostatically formed on an image carrier by a reference latent image forming device and then developed by the developing device to become a reference toner image. An irregularity detecting circuit determines the degree of difference between the density of the edge and the density of the central portion of the reference toner image. A bias electric field control circuit controls the bias electric field in matching relation to the output of the irregularity detecting circuit, thereby preventing the image quality from being degraded by a change in the resistance of the carrier.

摘要翻译： 一种图像形成装置，其具有使用双组分型显影剂的类型的显影装置，并且通过具有交变电场的偏置电场显影静电潜像。 通过参考潜像形成装置在图像载体上静电地形成预定的参考潜像，然后由显影装置显影，成为基准调色剂图像。 不规则检测电路确定边缘的密度与基准调色剂图像的中心部分的密度之间的差异程度。 偏置电场控制电路控制与不规则检测电路的输出匹配关系的偏置电场，从而防止图像质量由于载波电阻的变化而劣化。

公开(公告)号：US5270783A

公开(公告)日：1993-12-14

申请号：US922389

申请日：1992-07-31

申请人： Takashi Bisaiji ,  Kouji Hayashi ,  Noboru Sawayama ,  Takeyoshi Sekine ,  Takayuki Maruta ,  Norimitu Kikuchi ,  Tetsuro Miura ,  Kazunori Bannai ,  Kazunari Yamada ,  Nobuhiro Nakayama ,  Nobuyuki Koinuma

发明人： Takashi Bisaiji ,  Kouji Hayashi ,  Noboru Sawayama ,  Takeyoshi Sekine ,  Takayuki Maruta ,  Norimitu Kikuchi ,  Tetsuro Miura ,  Kazunori Bannai ,  Kazunari Yamada ,  Nobuhiro Nakayama ,  Nobuyuki Koinuma

IPC分类号： G03G15/00 ,  G03G15/01 ,  G03G15/06 ,  G03G15/08 ,  G03G15/09 ,  G03G21/00 ,  H04N1/29

CPC分类号： G03G15/0126 ,  G03G15/0849 ,  G03G15/0851 ,  G03G15/0853

摘要： Image forming equipment having an image carrier and a developer carrier located face-to-face and forming an AC-superposed DC electric field between them to develop a latent image electrostatically formed on the image carrier. Sensors responsive to image forming conditions are provided and protected from noise ascribable to an AC component included in the electric field in the event when the sensors operate.

摘要翻译： 图像形成设备具有图像载体和显影剂载体，面对面地形成并在它们之间形成AC叠加的DC电场，以形成静电形成在图像载体上的潜像。 提供响应图像形成条件的传感器，并且在传感器操作的情况下，防止归因于包括在电场中的AC分量的噪声。

公开(公告)号：US4875079A

公开(公告)日：1989-10-17

申请号：US170264

申请日：1988-03-18

申请人： Takashi Bisaiji ,  Noboru Sawayama ,  Hideo Yoo

发明人： Takashi Bisaiji ,  Noboru Sawayama ,  Hideo Yoo

IPC分类号： G03G15/01 ,  G03G15/08

CPC分类号： G03G15/0126 ,  G03G15/0849 ,  G03G15/0853 ,  G03G15/5041

摘要： A device for controlling the density of toner of different colors individually stored in a plurality of developing units which are arranged around a photoconductive element senses toner density at a predetermined period which differs from one of the developing units to another. Each of the developing units is associated with a different kind of toner density sensing device.

摘要翻译： 用于控制分别存储在围绕光电元件的多个显影单元中的不同颜色的调色剂的浓度的装置以与显影单元之一不同的预定周期感测调色剂浓度。 每个显影单元与不同种类的调色剂浓度感测装置相关联。

公开(公告)号：US5237369A

公开(公告)日：1993-08-17

申请号：US743252

申请日：1991-08-09

申请人： Takayuki Maruta ,  Noboru Sawayama ,  Katsuhiro Aoki

发明人： Takayuki Maruta ,  Noboru Sawayama ,  Katsuhiro Aoki

IPC分类号： G03G15/00 ,  G03G15/02 ,  G03G15/04 ,  G03G15/043 ,  G03G15/06 ,  G03G15/08 ,  G03G21/00

CPC分类号： G03G15/5037 ,  G03G2215/00042

摘要： Color image forming equipment capable of immediately responding to a sharp change in environment and producing stable images over a long period of time. An information value relating to the amount of toner deposition on a photoconductive element which changes with a change in environment and effects the formation of an image with a reference value which defines a first and a second environment. Variable dynamic range control devices each being optimal for respective one of the first and second environments are selectively used on the basis of the result of the above comparison.

摘要翻译： 彩色图像形成设备能够立即响应环境的急剧变化并长时间产生稳定的图像。 与光电元件上的调色剂沉积量相关的信息值，其随着环境变化而变化，并且影响形成具有限定第一和第二环境的参考值的图像。 基于上述比较的结果，选择性地使用对于第一和第二环境中的相应一个环境而优化的可变动态范围控制装置。

公开(公告)号：US5384628A

公开(公告)日：1995-01-24

申请号：US131967

申请日：1993-10-08

申请人： Nobuo Takami ,  Kazuyuki Sugihara ,  Takayuki Maruta ,  Kazuo Nojima ,  Noboru Sawayama ,  Kaoru Yoshimatsu ,  Katsuji Watabe ,  Takuji Yoneda

发明人： Nobuo Takami ,  Kazuyuki Sugihara ,  Takayuki Maruta ,  Kazuo Nojima ,  Noboru Sawayama ,  Kaoru Yoshimatsu ,  Katsuji Watabe ,  Takuji Yoneda

IPC分类号： G03G15/08 ,  G03G15/06

CPC分类号： G03G15/0822 ,  G03G15/0896

摘要： A developing device for image forming equipment capable of agitating and mixing a fresh toner and a developer sufficiently is disclosed. The device eliminates a change in image density among individual copies, irregularity in density corresponding to the spiral pitch of, for example, a toner transport screw, and irregularity in density in the front-and-rear direction (axial direction of a developing sleeve) ascribable to defective agitation. To replace or clean a desire part or parts built in a developing device, the device is divided into two such that the desired parts are freely accessible. This facilitates the cleaning and replacement of such parts.

摘要翻译： 公开了能够充分搅拌和混合新鲜调色剂和显影剂的成像设备的显影装置。 该装置消除了各个副本之间的图像浓度的变化，对应于例如调色剂输送螺杆的螺旋间距的密度的不规则性以及前后方向（显影套筒的轴向）的密度的不规则性， 归因于躁动不良。 为了更换或清理内置在显影装置中的期望的部件或部件，该装置被分成两个，使得所需的部件可自由地接近。 这有助于清洁和更换这些部件。

公开(公告)号：US5298944A

公开(公告)日：1994-03-29

申请号：US92940

申请日：1993-07-19

申请人： Noboru Sawayama ,  Takayuki Maruta ,  Mitsuo Hasebe

发明人： Noboru Sawayama ,  Takayuki Maruta ,  Mitsuo Hasebe

IPC分类号： G03G15/00 ,  G03G15/01 ,  G03G21/00

CPC分类号： G03G15/01 ,  G03G15/5041 ,  G03G2215/00042

摘要： A developing system of the type using a two-component developer and capable of reproducing image densities and halftone images stably with no regard to changes in ambient conditions and aging. At least two toner image patterns each having a different toner density are formed on a photoconductive element. The amounts of toner deposited on the individual patterns are sensed by a photosensor, while the supply of toner to a developer and the dynamic range of a latent image are controlled in combination in response to the output of the photosensor.

摘要翻译： 这种类型的显影系统使用双组分显影剂并且能够稳定地再现图像浓度和半色调图像，而不考虑环境条件和老化的变化。 在感光元件上形成各自具有不同调色剂密度的至少两个调色剂图像图案。 通过光电传感器感测沉积在各图案上的调色剂的量，同时响应于光传感器的输出而组合地控制向显影剂供应调色剂和潜像的动态范围。

公开(公告)号：US5424809A

公开(公告)日：1995-06-13

申请号：US31015

申请日：1993-03-11

申请人： Noboru Sawayama ,  Yoshihiro Mitekura ,  Takayuki Maruta ,  Katsuhiro Aoki ,  Koji Okabayashi

发明人： Noboru Sawayama ,  Yoshihiro Mitekura ,  Takayuki Maruta ,  Katsuhiro Aoki ,  Koji Okabayashi

IPC分类号： G03G15/00 ,  G03G15/01 ,  G03G21/00

CPC分类号： G03G15/5041 ,  G03G15/01 ,  G03G2215/00042

摘要： An image forming method and an apparatus therefor applicable to a color copier. A signal value representative of a reflection and appearing when the output of a photosensor is minimum in response to a change in the amount of toner deposition on a photoconductive element is detected. This maintains the density of a predetermined reference pattern used to sense an image density constant despite the change in, for example, the reflection characteristic of the photoconductive element. A bias for development is so changed as to maintain the output of the photosensor constant, so that the effective bias remains constant relative to the charge potential on the photoconductive element.

摘要翻译： 一种适用于彩色复印机的成像方法及其装置。 检测出响应于光电导元件上的调色剂沉积量的变化而使光电传感器的输出最小时的反射和出现的信号值。 尽管例如光电导元件的反射特性发生变化，仍然保持用于感测图像密度常数的预定参考图案的浓度。 为了保持光电传感器的输出恒定，发展的偏向被改变，使得有效偏置相对于光导元件上的电荷电位保持恒定。

公开(公告)号：US5293198A

公开(公告)日：1994-03-08

申请号：US742896

申请日：1991-08-08

申请人： Noboru Sawayama ,  Katsuhiro Aoki ,  Takayuki Maruta

发明人： Noboru Sawayama ,  Katsuhiro Aoki ,  Takayuki Maruta

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

CPC分类号： G03G15/0855 ,  G03G15/5041 ,  G03G2215/00042

摘要： An image forming apparatus has a photoconductive element, a developing sleeve, a photosensor and a control device for controlling the dynamic range of an image. A background output VSG is produced from the photosensor when the photoconductive element is rotating and the developing sleeve is rotating and a background output VSG+ is produced from the photosensor when the photoconductive element is rotating and the developing sleeve is not rotating. The control device controls a developing bias, a charge potential, a quantity of exposing light or an amount of toner supply in response to the greater of the two values VSG or VSG+. Also, the gradient of the background output VSG is determined and is used to decide whether the image forming apparatus is in an unusual state or not.

摘要翻译： 图像形成装置具有感光元件，显影套筒，光电传感器和用于控制图像的动态范围的控制装置。 当光电导元件旋转并且显影套筒旋转时，从光电传感器产生背景输出VSG，并且当感光元件旋转并且显影套筒不旋转时，从光电传感器产生背景输出VSG +。 响应于两个值VSG或VSG +中的较大值，控制装置控制显影偏压，电荷电位，曝光量或调色剂供应量。 此外，确定背景输出VSG的梯度，并用于判定图像形成装置是否处于非正常状态。

公开(公告)号：US08066348B2

公开(公告)日：2011-11-29

申请号：US12164377

申请日：2008-06-30

申请人： Tetsuro Hirota ,  Takumi Hagiwara ,  Kenichi Kawabata ,  Mamoru Yorimoto ,  Tetsu Morino ,  Noboru Sawayama

发明人： Tetsuro Hirota ,  Takumi Hagiwara ,  Kenichi Kawabata ,  Mamoru Yorimoto ,  Tetsu Morino ,  Noboru Sawayama

IPC分类号： B41J2/01

CPC分类号： B41J29/393 ,  B41J2/2142 ,  B41J19/207 ,  B41J29/38

摘要： An image forming apparatus includes a recording head, a water-repellent transfer belt, a pattern formation controller, a read unit, and a detection unit. The recording head has a plurality of nozzles aligned in a given direction, and ejects droplets of a liquid therefrom. The pattern formation controller directs each of the plurality of nozzles to eject the liquid to form a detection pattern on the transfer belt. The detection pattern has multiple droplets ejected from each of the plurality of nozzles sequentially arranged and spaced apart from each other both in the given direction and in a direction orthogonal to the given direction. The read unit includes a light emitting element and a light receiving element, and reads the detection pattern to output a read result. The detection unit detects a defective nozzle according to the read result.

摘要翻译： 图像形成装置包括记录头，防水转印带，图案形成控制器，读取单元和检测单元。 记录头具有沿给定方向排列的多个喷嘴，并从其喷出液滴。 图案形成控制器引导多个喷嘴中的每一个喷射液体以在转印带上形成检测图案。 检测图案具有从给定方向和与给定方向正交的方向上顺序排列和间隔开的多个喷嘴中的每一个排出的多个液滴。 读取单元包括发光元件和光接收元件，并且读取检测图案以输出读取结果。 检测单元根据读取结果来检测有缺陷的喷嘴。

公开(公告)号：US07551866B2

公开(公告)日：2009-06-23

申请号：US11477673

申请日：2006-06-30

申请人： Naoto Watanabe ,  Shin Hasegawa ,  Hideki Kamaji ,  Shinji Kato ,  Hitoshi Ishibashi ,  Kohta Fujimori ,  Kayoko Tanaka ,  Yuushi Hirayama ,  Takashi Enami ,  Shinji Kobayashi ,  Kazumi Kobayashi ,  Fukutoshi Uchida ,  Noboru Sawayama

发明人： Naoto Watanabe ,  Shin Hasegawa ,  Hideki Kamaji ,  Shinji Kato ,  Hitoshi Ishibashi ,  Kohta Fujimori ,  Kayoko Tanaka ,  Yuushi Hirayama ,  Takashi Enami ,  Shinji Kobayashi ,  Kazumi Kobayashi ,  Fukutoshi Uchida ,  Noboru Sawayama

IPC分类号： G03G15/00

CPC分类号： G03G15/5058 ,  G03G2215/00042 ,  G03G2215/00059 ,  G03G2215/0119

摘要： An image forming method and apparatus capable of implementing accurately and constantly an improved conversion of the amount of toner adhesion over the entire range of the amount of adhesion. The method includes the steps of computing a normalization value as a relative output ratio of the regular reflection output to a background regular reflection component from the surface extracted from the regular reflection light, in which the regular reflection output is obtained by detecting a plurality of gradation toner patterns with a sensor configured to simultaneously detect regular reflection light and diffuse reflection light; obtaining a diffuse reflection output conversion factor by either (1) subtracting the normalization value multiplied by the diffuse reflection output voltage generated by the surface from the diffuse reflection output voltage, or (2) subtracting the normalization value multiplied by a diffuse reflection output voltage increment, which is computed as the difference between the diffuse reflection output voltage and another diffuse reflection output voltage obtained when a light emitting device is turned off, from the diffuse reflection output voltage increment; and subjecting the relation between the diffuse reflection output conversion factor and the amount of adhesion to a polynomial approximation.

摘要翻译： 一种图像形成方法和装置，其能够在粘合量的整个范围内精确地和持续地实现调色剂粘附量的改进转换。 该方法包括以下步骤：从通过从正反射光提取的表面计算正规反射输出与背景常规反射分量的相对输出比的归一化值，其中通过检测多个等级获得正则反射输出 具有传感器的调色剂图案被配置为同时检测正常反射光和漫反射光; 通过（1）从扩散反射输出电压减去由表面产生的漫反射输出电压的归一化值，或（2）减去乘以漫反射输出电压增量的归一化值，获得漫反射输出转换因子 ，其被计算为漫反射输出电压与发光装置关闭时获得的另一漫反射输出电压之间的差; 并将漫反射输出转换因子与粘附量之间的关系进行多项式近似。