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1.发明授权Image formation apparatus that can maintain appropriately toner density in developing device 失效可以适当地保持显影装置中的调色剂密度的图像形成装置
公开(公告)号：US5708918A
公开(公告)日：1998-01-13
申请号：US727319
申请日：1996-10-08
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。
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公开(公告)号：US5530530A
公开(公告)日：1996-06-25
申请号：US435813
申请日：1995-05-05
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。
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3.发明授权Image forming apparatus which calculates toner consumption in accordance with tone correction 失效根据色调校正计算调色剂消耗的图像形成装置
公开(公告)号：US5724627A
公开(公告)日：1998-03-03
申请号：US558103
申请日：1995-11-17
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。
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公开(公告)号：US6021288A
公开(公告)日：2000-02-01
申请号：US157495
申请日：1998-09-21
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。
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5.发明授权Tandem-type image forming apparatus and image forming condition determination method used in this tandem-type image forming apparatus 有权串联式图像形成装置和图像形成条件确定方法，用于该串列型图像形成装置
公开(公告)号：US5978615A
公开(公告)日：1999-11-02
申请号：US162222
申请日：1998-09-28
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。
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6.发明授权Digital image forming apparatus which specifies a sensitivity characteristic of a photoconductor 失效指定光电导体的灵敏度特性的数字图像形成装置
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
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。
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7.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
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。
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公开(公告)号：US5822079A
公开(公告)日：1998-10-13
申请号：US611814
申请日：1996-03-06
CPC分类号： G03G15/5041 , G03G2215/00042 , G03G2215/00063 , G03G2215/00084
摘要： An image forming apparatus is provided which is immune to characteristic variations of a photoconductor and a developer material, which can detect the amount of toner adhering to a test toner image accurately, and which can always form a favorable image using an optimal image forming parameter. A predetermined test toner image is formed on the photoconductor using developing devices. The amount of toner adhering to the formed test toner image is detected by an AIDC sensor. A printer control unit determines grid potential Vg of a corona charger and development bias potential Vb of each developing device based on the detected amount of adhering toner. A predetermined image is formed using the determined grid potential and development bias potential. The printer control unit changes the image forming condition for the next test toner image based on the detected amount of adhering toner so that the amount of toner adhering to the next test toner image can be detected in a range of high detection sensitivity of the AIDC sensor.
摘要翻译： 提供了一种图像形成装置，其不受光电导体和显影剂材料的特征变化的影响，可以精确地检测附着在测试调色剂图像上的调色剂的量，并且可以始终使用最佳图像形成参数形成良好的图像。 使用显影装置在感光体上形成预定的测试调色剂图像。 通过AIDC传感器检测附着在形成的测试调色剂图像上的调色剂的量。 打印机控制单元基于检测到的粘附调色剂量来确定电晕充电器的电网电位Vg和显影装置的显影偏压电位Vb。 使用确定的电网电位和显影偏压电位形成预定图像。 打印机控制单元基于检测到的粘附调色剂量来改变下一个测试调色剂图像的图像形成条件，使得可以在AIDC传感器的高检测灵敏度的范围内检测粘附到下一个测试调色剂图像的调色剂的量 。
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公开(公告)号：US5963766A
公开(公告)日：1999-10-05
申请号：US92876
申请日：1998-06-08
申请人： Yukihiko Okuno , Suguru Hamamichi , Shinichi Yoshimoto , Kentaro Katori , Mineyuki Sako , Yoshihiro Shojo
发明人： Yukihiko Okuno , Suguru Hamamichi , Shinichi Yoshimoto , Kentaro Katori , Mineyuki Sako , Yoshihiro Shojo
IPC分类号： G03G15/08
CPC分类号： G03G15/0822 , G03G2215/0822 , G03G2215/0841
摘要： A supply screw 10 and a collection screw 20 for a developing device equip with screw blades having different forms at particular sections so as to make conveying force of developer different depending on sections. Screw blades for big conveying force are attached within sections where developer distribution is dense while screw blades for small conveying force are attached within sections where developer distribution is sparse. In other words, conveying force is made to be greater at sparse-distribution section while smaller at dense-distribution section. Developer delivery is also promoted by providing different conveying force area within carry-up area where developer is carried up from a supply screw 10 to a collection screw 20 or vice versa. By making conveying force of each section different, developer is uniformly delivered to a developing roll 87 whether in width direction or in axial direction. Furthermore, developer circulation in a developing device becomes smooth.
摘要翻译： 用于显影装置的供应螺钉10和收集螺钉20装备在特定部分具有不同形式的螺旋叶片，以使显影剂的输送力根据部分不同。 用于大输送力的螺旋叶片安装在显影剂分布密集的部分内，而用于小传送力的螺旋叶片连接在显影剂分布稀疏的部分内。 换句话说，在稀疏分布部分处的输送力较大，而在致密分布部分则较小。 还可以通过在显影剂从供给螺钉10向收集螺钉20运送的携带区域内提供不同的输送力区域，反之亦然地促进显影剂输送。 通过使各部分的输送力不同，显影剂在宽度方向或轴向方向上均匀地传送到显影辊87。 此外，显影装置中的显影剂循环变得平滑。
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10.发明授权Image forming apparatus which excels in reproducibility of colors, fine lines and gradations even in a copy made from a copied image 失效图像形成装置即使在由复印图像制成的复印件中也能够在颜色，细线和灰度的再现性方面表现出色公开(公告)号：US06388768B2
公开(公告)日：2002-05-14
申请号：US09020281
申请日：1998-02-09
IPC分类号： B41B100
CPC分类号： H04N1/6033 , G03G15/01 , G03G2215/00042 , G03G2215/00063 , G03G2215/018 , H04N1/4078
摘要： An image forming apparatus for forming an image with few defects even when making a copy from a copied image. When forming an image, a standard pattern is formed outside the image forming area in accordance with standard pattern data for color correction. When reading the image together with the standard pattern formed above, the color correction conditions for the image data are modified in accordance with the comparison result between the read standard pattern data and the standard pattern data for color correction. Copying is then performed on a copying paper.
摘要翻译： 一种图像形成装置，即使在从复印图像进行复制时也可以形成缺陷少的图像。 当形成图像时，根据用于颜色校正的标准图案数据，在图像形成区域外部形成标准图案。 当与上述形成的标准图案一起读取图像时，根据读取的标准图案数据和用于颜色校正的标准图案数据之间的比较结果来修改图像数据的颜色校正条件。 然后在复印纸上进行复印。
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