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    Image forming apparatus capable of estimating toner concentration
    1.
    发明授权
    Image forming apparatus capable of estimating toner concentration 失效
    能够估计调色剂浓度的图像形成装置

    公开(公告)号：US5920748A

    公开(公告)日：1999-07-06

    申请号：US588435

    申请日：1996-01-18

    申请人： Atsushi Kawai ,  Masaki Tanaka ,  Tetsuya Sakai

    发明人： Atsushi Kawai ,  Masaki Tanaka ,  Tetsuya Sakai

    IPC分类号： G03G15/01 ,  G03G15/08

    CPC分类号： G03G15/0855 ,  G03G15/0853 ,  G03G15/5041 ,  G03G2215/00042

    摘要： An image forming apparatus, such as an electrophotographic copier, forms a test image on a photosensitive member, under constant image forming conditions, and the amount of toner adhering to the photosensitive member is detected. The detected amount of toner is converted into a developer toner concentration, based on a conversion standard. The toner concentration is used to control the operation of a toner replenishment device. The conversion standard is periodically corrected by forming a test image using a developer having a known toner concentration, detecting the amount of adhered toner, comparing the detected result to a standard value, and selecting one conversion standard table from among a number of different conversion tables.

    摘要翻译： 诸如电子照相复印机的图像形成装置在恒定图像形成条件下在感光构件上形成测试图像，并且检测粘附到感光构件的调色剂的量。 基于转化标准将检测到的调色剂量转化为显影剂调色剂浓度。 调色剂浓度用于控制调色剂补充装置的操作。 通过使用具有已知调色剂浓度的显影剂形成测试图像，检测粘附的调色剂的量，将检测结果与标准值进行比较，并从多个不同的转换表中选择一个转换标准表来定期地校正转换标准 。

    Toner replenishment device for an image forming apparatus which employs pixel density and toner density information
    2.
    发明授权
    Toner replenishment device for an image forming apparatus which employs pixel density and toner density information 失效
    用于图像形成装置的调色剂补充装置，其采用像素密度和调色剂浓度信息

    公开(公告)号：US5708917A

    公开(公告)日：1998-01-13

    申请号：US611215

    申请日：1996-03-05

    申请人： Atsushi Kawai ,  Masaki Tanaka ,  Tetsuya Sakai ,  Yukihiko Okuno

    发明人： Atsushi Kawai ,  Masaki Tanaka ,  Tetsuya Sakai ,  Yukihiko Okuno

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

    CPC分类号： G03G15/0849 ,  G03G15/0853 ,  G03G15/0855 ,  G03G15/556 ,  G03G2215/00037

    摘要： The image forming apparatus is provided with a detecting means for detecting transfer efficiency when transferring a toner image from a photosensitive member to a transfer sheet, and a developing efficiency changing means for changing developing efficiency based on the transfer efficiency detected by the detecting means, and corrects the toner consumption predicted by the predicting means based on the transfer efficiency as detected by the detecting means, so as to determine the amount of toner to be replenished. When the developing efficiency is changed based on the transfer efficiency, toner consumption also changes, and does not match the predicted toner consumption. According to the present invention, toner concentration in a developer can be even more accurately controlled by correcting the predicted toner consumption by the change in transfer efficiency. Detection of transfer efficiency is achieved by a method of indirectly detecting humidity in the apparatus, or a method of measuring the amount of toner transferred to a transfer member.

    摘要翻译： 图像形成装置设置有用于在将调色剂图像从感光构件转印到转印纸上时检测转印效率的检测装置，以及用于基于由检测装置检测的转印效率来改变显影效率的显影效率改变装置，以及 基于由检测装置检测的转印效率来校正由预测装置预测的调色剂消耗量，以便确定要补充的调色剂的量。 当基于转印效率改变显影效率时，调色剂消耗也改变，并且与预测的调色剂消耗不匹配。 根据本发明，通过根据转印效率的变化校正预测的调色剂消耗，可以更加准确地控制显影剂中的调色剂浓度。 通过间接检测设备中的湿度的方法或测量转印到转印部件的调色剂量的方法来实现转印效率的检测。

    Apparatus for measuring developer density
    3.
    发明授权
    Apparatus for measuring developer density 失效
    用于测量显影剂密度的装置

    公开(公告)号：US5530530A

    公开(公告)日：1996-06-25

    申请号：US435813

    申请日：1995-05-05

    申请人： Masaki Tanaka ,  Atsushi Kawai ,  Tetsuya Sakai ,  Naoyoshi Kinoshita ,  Yukihiko Okuno

    发明人： Masaki Tanaka ,  Atsushi Kawai ,  Tetsuya Sakai ,  Naoyoshi Kinoshita ,  Yukihiko Okuno

    IPC分类号： G01N21/47 ,  G03G15/08 ,  G03G21/00

    CPC分类号： G03G15/0855 ,  G03G15/0893 ,  G03G2215/0897

    摘要： Developer density measuring apparatus comprising a transparent detection window confronting the interior of a developing device, illumination means for illuminating developer comprising a toner and a carrier accommodated in said developing device, and density determining means for determining developer density by the amount of light reflected from said developer measured through said transparent detection window, and wherein the surface of the transparent detection window on the side confronting the interior of the developing device is roughened.

    摘要翻译： 显影剂密度测量装置，包括面向显影装置内部的透明检测窗口，照明装置，用于照亮包含调色剂的显影剂和容纳在所述显影装置中的载体;以及浓度确定装置，用于根据所述显影装置的反射光量确定显影剂浓度 显影剂通过所述透明检测窗测量，并且其中在与显影装置内部相对的一侧上的透明检测窗口的表面被粗糙化。

    Image forming apparatus estimating a consumable life of a component using fuzzy logic
    5.
    发明授权
    Image forming apparatus estimating a consumable life of a component using fuzzy logic 失效
    图像形成装置使用模糊逻辑估计部件的消耗寿命

    公开(公告)号：US5778279A

    公开(公告)日：1998-07-07

    申请号：US773736

    申请日：1996-12-24

    申请人： Atsushi Kawai ,  Tetsuya Sakai

    发明人： Atsushi Kawai ,  Tetsuya Sakai

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

    CPC分类号： G03G15/556 ,  G03G15/5079 ,  G03G15/553 ,  G03G2215/00118

    摘要： A copying machine equipped with a PC counter for counting cumulative rotation time of a photoconductive drum, a development counter for counting cumulative drive time of a developing unit, a sensor for detecting deposition amount of toner onto the photoconductive drum, a sensor for detecting toner concentration in the developer, and a humidity sensor. Based on output values from the counters and sensors, a control section of the copying machine estimates the degree of consumption of a consumable article by using fuzzy inference method or neural network, and thereby decides whether the consumable article have reached an end of life.

    摘要翻译： 一种装有用于计数感光鼓的累积旋转时间的PC计数器的复印机，用于计数显影单元的累积驱动时间的显影计数器，用于检测调色剂到感光鼓上的沉积量的传感器，用于检测调色剂浓度的传感器 在开发商和湿度传感器。 基于计数器和传感器的输出值，复印机的控制部通过使用模糊推理法或神经网络来估计消耗品的消耗程度，从而判断消耗品是否已经达到寿命。

    Electrophotographic image forming apparatus
    6.
    发明授权
    Electrophotographic image forming apparatus 失效
    电子照相成像设备

    公开(公告)号：US5581221A

    公开(公告)日：1996-12-03

    申请号：US354808

    申请日：1994-12-13

    申请人： Atsushi Kawai ,  Hiroshi Sakakibara ,  Toshifumi Watanabe ,  Tetsuya Sakai ,  Hiroshi Nishikawa

    发明人： Atsushi Kawai ,  Hiroshi Sakakibara ,  Toshifumi Watanabe ,  Tetsuya Sakai ,  Hiroshi Nishikawa

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

    CPC分类号： G03G15/5041 ,  G03G15/0853 ,  G03G15/0855 ,  G03G2215/00042

    摘要： A copying machine wherein a developing device is provided with a first sensor for detecting the toner density in a developer and a second sensor which is provided around a photosensitive drum for detecting the amount of deposited toner on a test pattern. The toner supply is controlled according to a result detected by the second sensor. When the toner density is judged high from a result detected by the first sensor, a developing bias voltage is set high by a computer, and when the toner density is judged low, the developing bias voltage is set low.

    摘要翻译： 一种复印机，其中显影装置设置有用于检测显影剂中的调色剂浓度的第一传感器和设置在感光鼓周围的第二传感器，用于检测测试图案上沉积的调色剂的量。 根据第二传感器检测到的结果控制调色剂供应。 当从第一传感器检测到的结果判断为高浓度的调色剂浓度时，通过计算机将显影偏压设置得高，并且当调色剂浓度判定为低时，显影偏压被设定为低。

    Method and device for estimating toner concentration and image forming apparatus equipped with such device
    7.
    发明申请
    Method and device for estimating toner concentration and image forming apparatus equipped with such device 有权
    用于估计调色剂浓度的方法和装置以及配备有这种装置的成像装置

    公开(公告)号：US20060018674A1

    公开(公告)日：2006-01-26

    申请号：US11008605

    申请日：2004-12-10

    申请人： Katsuyuki Hirata ,  Tetsuya Sakai ,  Tatsuya Isono ,  Hironori Akashi ,  Toshio Tsuboi ,  Takashi Harashima ,  Masaki Tanaka

    发明人： Katsuyuki Hirata ,  Tetsuya Sakai ,  Tatsuya Isono ,  Hironori Akashi ,  Toshio Tsuboi ,  Takashi Harashima ,  Masaki Tanaka

    IPC分类号： G03G15/08

    CPC分类号： G03G15/5058 ,  G03G15/0849 ,  G03G2215/00037

    摘要： A method and device for estimating toner concentration in a two-component developer consisting of toner and carrier for an electrophotographic image forming apparatus, and an image forming apparatus equipped with such device. The above method and device calculate an amount of toner charge from data detected by a transferred toner amount sensor, compensate the toner charge based on environmental humidity data and cumulative use period data of the image forming apparatus, and estimate toner concentration. The image forming apparatus equipped with the above device exerts control to predict toner consumption from the estimated toner concentration, supply toner to a developing unit according to the predicted toner consumption, and maintain the toner concentration in the developer at predetermined concentration.

    摘要翻译： 用于估计由用于电子照相图像形成装置的调色剂和载体组成的双组分显影剂中的调色剂浓度的方法和装置，以及配备有这种装置的图像形成装置。 上述方法和装置根据由转印调色剂量传感器检测到的数据计算调色剂电荷量，并基于图像形成装置的环境湿度数据和累积使用期间数据补偿调色剂量，并估计调色剂浓度。 配备有上述装置的图像形成装置进行控制以根据估计的调色剂浓度预测调色剂消耗，根据预测的调色剂消耗量向显影单元供应调色剂，并将显影剂中的调色剂浓度保持在预定浓度。

    Image forming apparatus having function for automatically adjusting image forming condition
    8.
    发明授权
    Image forming apparatus having function for automatically adjusting image forming condition 有权
    具有自动调整图像形成条件功能的图像形成装置

    公开(公告)号：US06285839B1

    公开(公告)日：2001-09-04

    申请号：US09251457

    申请日：1999-02-17

    申请人： Masaki Tanaka ,  Tetsuya Sakai ,  Futoshi Hamada ,  Toshifumi Watanabe

    发明人： Masaki Tanaka ,  Tetsuya Sakai ,  Futoshi Hamada ,  Toshifumi Watanabe

    IPC分类号： G03G1500

    CPC分类号： G03G15/5058 ,  G03G15/0194 ,  G03G2215/00042 ,  G03G2215/00059 ,  G03G2215/00063 ,  G03G2215/00067

    摘要： A tandem-type image forming apparatus forms a color image by transferring images formed by a plurality of image forming units set along a transfer belt onto a recording sheet transported by the transfer belt. The tandem-type image forming apparatus includes a plurality of detecting units, each detecting a toner image formed by a corresponding image forming unit to obtain the amount of toner in the toner image, a standard pattern formation controlling unit for controlling one of the image forming units to form a standard pattern to be detected by the detecting units, a sensitivity obtaining unit for obtaining a value as an evaluation value that is outputted by each of the detecting units on detecting the standard pattern, and an detection output adjusting unit for adjusting a value outputted by the detecting unit in accordance with the evaluation value. An image forming condition is set for each of the image forming units in accordance with the adjusted value, and image formation is performed under the image forming conditions.

    摘要翻译： 串联型图像形成装置通过将由沿着转印带设置的多个图像形成单元形成的图像转印到由转印带传送的记录纸上而形成彩色图像。 串联型图像形成装置包括多个检测单元，每个检测单元检测由相应图像形成单元形成的调色剂图像以获得调色剂图像中的调色剂量;标准图案形成控制单元，用于控制图像形成 单元，以形成由检测单元检测的标准图案;灵敏度获取单元，用于获得作为每个检测单元在检测标准图案时输出的评估值的值;以及检测输出调整单元，用于调整 由检测单元根据评估值输出的值。 根据调整值为每个图像形成单元设置图像形成条件，并且在图像形成条件下执行图像形成。