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。

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。

公开(公告)号：US5708918A

公开(公告)日：1998-01-13

申请号：US727319

申请日：1996-10-08

申请人： Yukihiko Okuno ,  Masaki Tanaka ,  Naoyoshi Kinoshita ,  Atsushi Kawai ,  Toshifumi Watanabe

发明人： Yukihiko Okuno ,  Masaki Tanaka ,  Naoyoshi Kinoshita ,  Atsushi Kawai ,  Toshifumi Watanabe

IPC分类号： G03G15/00 ,  G03G15/01 ,  G03G15/08 ,  G03G15/10

CPC分类号： G03G15/5041 ,  G03G15/01 ,  G03G15/0855 ,  G03G2215/00042 ,  G03G2215/00063

摘要： An image formation apparatus for forming a full color image in the four colors of cyan, magenta, yellow and black has a optical ATDC sensor attached in a cyan developing device to control the toner density under optical ATDC. A black developing device has the toner density controlled by AIDC. A standard develop efficiency .eta.STD of the cyan developing device obtained as a result of the AIDC is compared with a develop efficiency .eta. of black toner. The toner supply amount of the black developing device is determined according to the comparison result to supply the toner. Thus, an image formation apparatus is provided that can detect at favorable accuracy the toner density of a developing device incorporating a developer of which the toner density cannot be detected using optical ATDC to supply a required amount of toner.

摘要翻译： 用于形成青色，品红色，黄色和黑色四种颜色的全色图像的图像形成装置具有安装在青色显影装置中的光学ATDC传感器，以控制光学ATDC下的调色剂密度。 黑色显影装置具有由AIDC控制的调色剂浓度。 将由AIDC获得的青色显影装置的标准开发效率等级STD与黑色调色剂的显影效率η进行比较。 根据比较结果确定黑色显影装置的调色剂供应量以供应调色剂。 因此，提供了能够以良好的精确度检测包含使用光学ATDC不能检测调色剂浓度的显影剂的显影装置的调色剂浓度来提供所需量的调色剂的图像形成装置。

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 。

公开(公告)号：US5694223A

公开(公告)日：1997-12-02

申请号：US611718

申请日：1996-03-06

申请人： Kentaro Katori ,  Toshifumi Watanabe ,  Yukihiko Okuno ,  Masaki Tanaka ,  Hironobu Nakata ,  Katsuyuki Hirata

发明人： Kentaro Katori ,  Toshifumi Watanabe ,  Yukihiko Okuno ,  Masaki Tanaka ,  Hironobu Nakata ,  Katsuyuki Hirata

IPC分类号： G03G15/00 ,  H04N1/407 ,  H04N1/00 ,  G03F3/08 ,  G03G21/00 ,  H04N1/46

CPC分类号： G03G15/5041 ,  G03G15/5037 ,  H04N1/407 ,  G03G2215/00042

摘要： A printer control unit carries out a predetermined calculation based on the amount of adhering toner detected by an AIDC sensor and the surface potential of a photoconductor detected by a V sensor to correct the light emission intensity of a light source to prepare light emission characteristic data for .gamma. correction to obtain an optimal image. A .gamma. correcting unit corrects an image signal output from an image signal processing unit using the calculated light emission characteristic data for .gamma. correction to control the light source to emit light based on the corrected data. More specifically, since the .gamma. correction data is obtained by calculation, optimal .gamma. correction can always be carried out without a memory of a large capacity.

摘要翻译： 打印机控制单元基于由AIDC传感器检测到的附着调色剂的量和由V传感器检测的感光体的表面电位进行预定的计算，以校正光源的发光强度，以准备用于 伽马校正以获得最佳图像。 伽马校正单元使用所计算的用于伽马校正的发光特性数据来校正从图像信号处理单元输出的图像信号，以基于校正数据控制光源发光。 更具体地，由于通过计算获得伽马校正数据，所以可以总是在没有大容量的存储器的情况下执行最佳伽马校正。

公开(公告)号：US5724627A

公开(公告)日：1998-03-03

申请号：US558103

申请日：1995-11-17

申请人： Yukihiko Okuno ,  Masaki Tanaka ,  Naoyoshi Kinoshita

发明人： Yukihiko Okuno ,  Masaki Tanaka ,  Naoyoshi Kinoshita

IPC分类号： G03G15/00 ,  G03G15/08 ,  H04N1/29 ,  H04N1/407

CPC分类号： H04N1/295 ,  G03G15/0849 ,  G03G15/5041 ,  G03G15/556

摘要： In an electrophotographic image forming apparatus, a correction coefficient corresponding to each density level of toner consumption of a developing device is determined in accordance with a selected tone correction method, and/or the ratio of the emission period to the non-emission period of a light source. A toner consumption calculator multiplies the correction coefficients by the number of pixels of each density level of document image data, and determines the amount of toner consumed by the developing device from the sum total value of the multiplication results determined for each density level. A toner replenishment device resupplies toner to the developing device based on the determined amount of consumed toner. As a result, a constant toner concentration Tc normally can be maintained because toner is resupplied based on the calculated amount of toner consumption.

摘要翻译： 在电子照相图像形成装置中，根据选择的色调校正方法确定与显影装置的调色剂消耗的每个浓度水平相对应的校正系数，和/或发光周期与非发光周期的比率 光源。 调色剂消耗计算器将校正系数乘以文档图像数据的每个浓度水平的像素数，并且根据为每个浓度水平确定的相乘结果的总和值确定显影装置消耗的调色剂量。 调色剂补充装置基于所确定的消耗的调色剂量将调色剂重新供应到显影装置。 结果，通常可以基于计算的调色剂消耗量来调节调色剂再供给，因此可以保持恒定的调色剂浓度Tc。

公开(公告)号：US5978615A

公开(公告)日：1999-11-02

申请号：US162222

申请日：1998-09-28

申请人： Masaki Tanaka ,  Yukihiko Okuno ,  Toshifumi Watanabe

发明人： Masaki Tanaka ,  Yukihiko Okuno ,  Toshifumi Watanabe

IPC分类号： G03G15/00 ,  G03G15/01 ,  G03G15/16 ,  G03G15/14

CPC分类号： G03G15/5062 ,  G03G15/0194 ,  G03G15/5058 ,  G03G2215/00059 ,  G03G2215/00063 ,  G03G2215/00067 ,  G03G2215/0119

摘要： Using an image forming apparatus, toner images are respectively formed on photosensitive drums of image forming units set along a transport belt, and the toner images are transferred onto the transport belt or a recording sheet transported on the transport belt to form a color image. The image forming apparatus is composed of a first density detecting sensor for detecting a density of a toner image formed on the recording sheet or the transport belt at the upstream side of each transfer position of at least one image forming unit which is located at the downstream side of a first image forming unit in a transport direction of the transport belt and which is selected as a subject of an image forming condition determination, a second density detecting sensor for detecting a density of the toner image formed on the recording sheet or the transport belt at the downstream side of the transfer position, and an image forming condition determining unit for comparing a detection value given by the first density detecting sensor with a detection value given by the second density detecting sensor and for determining an image forming condition in accordance with the comparison result for an image formation performed by the image forming unit selected as the subject.

摘要翻译： 使用图像形成装置，将调色剂图像分别形成在沿着传送带设置的图像形成单元的感光鼓上，并且将调色剂图像转印到在传送带上传送的传送带或记录片材上以形成彩色图像。 图像形成装置由用于检测在位于下游的至少一个图像形成单元的每个转印位置的上游侧的记录纸或输送带上形成的调色剂图像的浓度的第一浓度检测传感器 在输送带的运送方向上的第一图像形成单元的侧面，并且被选择为图像形成条件确定的对象;第二密度检测传感器，用于检测形成在记录片材上的调色剂图像的浓度或运送 皮带在转印位置的下游侧，以及图像形成条件确定单元，用于将由第一密度检测传感器给出的检测值与由第二密度检测传感器给出的检测值进行比较，并且用于根据 由作为对象选择的图像形成单元执行的图像形成的比较结果。

公开(公告)号：US6021288A

公开(公告)日：2000-02-01

申请号：US157495

申请日：1998-09-21

申请人： Yukihiko Okuno ,  Masaki Tanaka ,  Toshifumi Watanabe

发明人： Yukihiko Okuno ,  Masaki Tanaka ,  Toshifumi Watanabe

IPC分类号： B41J29/393 ,  G03G15/00 ,  G03G15/08

CPC分类号： G03G15/5041 ,  B41J29/393 ,  G03G15/5037 ,  G03G2215/00042

摘要： A digital copying machine develops an electrostatic latent image formed on a photosensitive drum with toner, and transfers the developed image onto a sheet. In forming images on the photosensitive drum successively, three types of test patterns are formed in order in intro-image areas between image forming areas, and AIDC is made. The first test pattern is a low-density pattern, the second test pattern is an intermediate-density pattern, and the third test pattern is a high-density pattern.

摘要翻译： 数字复印机利用调色剂显影形成在感光鼓上的静电潜像，并将显影的图像转印到片材上。 在感光鼓上依次形成图像时，在图像形成区域之间的内部图像区域中依次形成三种类型的测试图案，并且制作AIDC。 第一测试图案是低密度图案，第二测试图案是中密度图案，第三测试图案是高密度图案。

公开(公告)号：US5754920A

公开(公告)日：1998-05-19

申请号：US806680

申请日：1997-02-26

申请人： Masaki Tanaka ,  Kentaro Katori ,  Atsushi Kawai ,  Hironobu Nakata

发明人： Masaki Tanaka ,  Kentaro Katori ,  Atsushi Kawai ,  Hironobu Nakata

IPC分类号： G03G15/00 ,  H04N1/23 ,  G03G15/06 ,  G03G21/00

CPC分类号： G03G15/5041 ,  G03G2215/00042

摘要： The present invention relates to an image forming apparatus for copiers, printers and the like. In the image forming apparatus, a standard pattern image, the density of which is detected by a sensor for controlling conditions of image forming operations, is formed on a photosensitive member. Density values are sampled at a plurality of sampling points on a standard pattern image by operating the sensor with a timing at which said sensor confronts said standard pattern image, and are mutually compared with each other. If the comparison result indicates that the timing of the sampling operation lags the standard pattern image, the sampling timing is corrected by eliminating the timing lag. The sampling operation of a subsequent sampling cycle is thereby conducted based on a corrected timing.

摘要翻译： 本发明涉及一种用于复印机，打印机等的图像形成装置。 在图像形成装置中，在感光构件上形成由用于控制图像形成操作的条件的传感器检测到的浓度的标准图案图像。 通过在所述传感器面对所述标准图案图像的定时操作所述传感器，并且彼此相互比较，在标准图案图像上的多个采样点处对密度值进行采样。 如果比较结果表示采样操作的定时滞后于标准图案图像，则通过消除定时滞后来校正采样定时。 因此，随后的采样周期的采样操作基于校正的时序进行。

公开(公告)号：US07181148B2

公开(公告)日：2007-02-20

申请号：US10813076

申请日：2004-03-31

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

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

IPC分类号： G03G15/00

CPC分类号： G03G15/5058 ,  G03G15/0131 ,  G03G2215/00059 ,  G03G2215/00063 ,  G03G2215/0161 ,  G03G2215/0164

摘要： A detection device used in an image forming apparatus, comprises a light-emitting element which emits light towards a toner pattern formed on an image carrier, a first light-receiving element which detects the light reflected from the toner pattern and a second light-receiving element which detects the light reflected from the toner pattern in a fashion different from the first light-receiving element. The detection device calculates the amount of toner of the toner pattern based on the output values from the first and second light-receiving elements as well as the position of the toner pattern based on the output value from the first light-receiving element.

摘要翻译： 一种用于图像形成装置的检测装置，包括朝向形成在图像载体上的调色剂图案发光的发光元件，检测从调色剂图案反射的光的第一光接收元件和第二受光元件 元件，其以不同于第一光接收元件的方式检测从调色剂图案反射的光。 检测装置基于来自第一和第二光接收元件的输出值以及基于来自第一光接收元件的输出值的调色剂图案的位置来计算调色剂图案的调色剂量。