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1. 发明授权

US5438401A Multicolor image forming method and apparatus therefor 失效
标题翻译：多色成像方法及其设备
公开(公告)号：US5438401A
公开(公告)日：1995-08-01
申请号：US311716
申请日：1994-09-23
申请人： Hisao Murayama , Hitoshi Ishibashi
发明人： Hisao Murayama , Hitoshi Ishibashi
IPC分类号： G03G15/01 , G03G15/00 , G03G15/02 , G03G15/06 , G03G21/00
CPC分类号： G03G15/0152 , G03G15/0163
摘要： An image forming apparatus capable of producing pure and clear-cut bicolor images stably over a long period of time. After a photoconductive element has been uniformly charged by a first charger, a first latent image is formed on the element by first exposure. The first latent image is developed by a black toner stored in a first developing unit. Subsequently, after the photoconductive element has been charged by a second charger implemented by a scorotron charger, a second latent image is formed on the element by second exposure. The second latent image is developed by a red toner stored in a second developing unit by reversal development. The resulting two toner images are transferred to a recording medium. The grid voltage of the second charger is selected to be lower than the potential deposited on the photoconductive element by the first charger. As a result, the portion of the image carrier where the black toner is deposited by the second developing unit has a lower potential than the portion where the black toner is not deposited. This increases the difference between the potential of the portion where the black toner is not deposited and the bias potential for development, thereby insuring a margin against the contamination of the background. At the same time, the difference between the potential of the portion where the black toner is deposited and the bias potential for development is reduced to prevent the black toner from flying away from the photoconductive element.
摘要翻译：一种图像形成装置，能够长时间稳定地生成纯净的双色图像。在光电元件已被第一充电器均匀充电之后，通过第一次曝光在元件上形成第一潜像。第一潜像由存储在第一显影单元中的黑色调色剂显影。随后，在光电导体元件已由通过电晕充电器实现的第二充电器充电之后，通过第二曝光在元件上形成第二潜像。通过反转显影存储在第二显影单元中的红色调色剂显影第二潜像。所得到的两个调色剂图像被转印到记录介质上。第二充电器的电网电压被选择为低于由第一充电器沉积在光电导元件上的电位。结果，由第二显影单元沉积黑色调色剂的图像载体的部分的电位低于未沉积黑色调色剂的部分。这增加了不沉积黑色调色剂的部分的电位与显影偏压潜力之间的差异，从而确保了背景污染的余地。同时，减少黑色调色剂沉积部分的电位与显影偏压电位之间的差异，以防止黑色调色剂离开光导元件。

2. 发明授权

US09182720B2 Image forming apparatus capable of reducing image density irregularity 有权
标题翻译：能够降低图像浓度不均匀的图像形成装置
公开(公告)号：US09182720B2
公开(公告)日：2015-11-10
申请号：US13591787
申请日：2012-08-22
申请人： Satoshi Kaneko , Shinji Kato , Hitoshi Ishibashi , Shuji Hirai , Jun Yamane , Koichi Kudo , Shingo Suzuki
发明人： Satoshi Kaneko , Shinji Kato , Hitoshi Ishibashi , Shuji Hirai , Jun Yamane , Koichi Kudo , Shingo Suzuki
IPC分类号： G03G15/00
CPC分类号： G03G15/5058 , G03G15/5033
摘要： In an image forming apparatus, a processor generates a first density variation data based on the surface potential of the pattern in relation to the rotational position of the image bearer and a second density variation data based on the first density variation data and the density of the toner pattern, stores the first density variation data and the second density variation data in a memory, makes a pattern in a predetermined timing, decides whether the first density variation data is changed or not, change the first density variation data based on the decision, controls the toner image forming condition of the toner image forming device based on the first density variation data and the second density variation data.
摘要翻译：在图像形成装置中，处理器基于图像载体的旋转位置相对于图案的表面电位产生第一浓度变化数据，并且基于第一浓度变化数据和密度变化数据生成第二浓度变化数据调色剂图案将第一密度变化数据和第二浓度变化数据存储在存储器中，在预定定时中形成图案，判定第一浓度变化数据是否改变，基于该决定改变第一浓度变化数据，基于第一浓度变化数据和第二浓度变化数据控制调色剂图像形成装置的调色剂图像形成条件。

3. 发明授权

US08867937B2 Diffuse reflection output conversion method, attached powder amount conversion method, and image forming apparatus 有权
标题翻译：扩散反射输出转换法，附着粉末量转换法和图像形成装置
公开(公告)号：US08867937B2
公开(公告)日：2014-10-21
申请号：US13495405
申请日：2012-06-13
申请人： Hideo Muroi , Yushi Hirayama , Shuji Hirai , Hitoshi Ishibashi
发明人： Hideo Muroi , Yushi Hirayama , Shuji Hirai , Hitoshi Ishibashi
IPC分类号： G03G15/00 , G01N21/47
CPC分类号： G03G15/5058 , G01N21/4738 , G01N21/4785 , G03G2215/0148
摘要： In an embodiment, a diffuse reflection output conversion method is executed in an apparatus detecting a plurality of gradation patterns. The apparatus includes a light emitter and light receiver, and detects specular reflection and diffuse reflection simultaneously. A region before specular reflection saturation is a region where the specular reflection component decreases and saturates at minimum level. A diffuse reflection detector is calibrated by: obtaining a diffuse reflection output resulting from an amount of attached powder at a border between the region before specular reflection saturation and the region after specular reflection saturation; calculating a ratio between the diffuse reflection output and a reference diffuse reflection output calculated in advance as a calibration coefficient; and multiplying a diffuse reflection output obtained from the gradation patterns by the calibration coefficient calculated at the calculating.
摘要翻译：在一个实施例中，在检测多个灰度图案的装置中执行漫反射输出转换方法。该装置包括光发射器和光接收器，同时检测镜面反射和漫反射。镜面反射饱和之前的区域是镜面反射分量降低并在最小水平饱和的区域。漫反射检测器通过以下方式来校准：获得由镜面反射饱和之前的区域与镜面反射饱和之后的区域之间的边界处附着的粉末的量产生的漫反射输出; 计算预先计算的漫反射输出与参考漫反射输出之间的比值作为校准系数; 并将从灰度图案获得的漫反射输出乘以在计算时计算的校准系数。

4. 发明授权

US08103181B2 Image forming apparatus and method of adjusting charge bias 有权
标题翻译：图像形成装置和调整充电偏压的方法
公开(公告)号：US08103181B2
公开(公告)日：2012-01-24
申请号：US12833787
申请日：2010-07-09
申请人： Hitoshi Ishibashi , Kohta Fujimori , Shin Hasegawa , Yushi Hirayama , Nobutaka Takeuchi , Shinji Kato , Kayoko Tanaka , Naoto Watanabe , Kentaroh Tomita , Satoru Komatsubara , Akio Kosuge
发明人： Hitoshi Ishibashi , Kohta Fujimori , Shin Hasegawa , Yushi Hirayama , Nobutaka Takeuchi , Shinji Kato , Kayoko Tanaka , Naoto Watanabe , Kentaroh Tomita , Satoru Komatsubara , Akio Kosuge
IPC分类号： G03G15/02
CPC分类号： G03G15/0266 , G03G2215/021
摘要： An image forming apparatus includes an image carrier configured to carry an image and a charger to which a direct current voltage overlapped with an AC voltage is applied as a charging bias to charge the image carrier. The charger is positioned in contact or contactlessly with the image carrier. The AC voltage applied to the charger in an adjustment of the AC voltage is not less than twice a charging start voltage Vth at which the image carrier starts to be charged.
摘要翻译：图像形成装置包括被配置为承载图像的图像载体和与AC电压重叠的直流电压的充电器作为充电偏压以对图像载体充电。充电器与图像载体接触或非接触地定位。在AC电压调节中施加到充电器的AC电压不小于图像载体开始充电的充电开始电压Vth的两倍。

5. 发明授权

US07962071B2 Developing device and image forming apparatus using same 有权
标题翻译：显影装置和使用它的成像装置
公开(公告)号：US07962071B2
公开(公告)日：2011-06-14
申请号：US12020172
申请日：2008-01-25
申请人： Kiyonori Tsuda , Koichi Kato , Yuki Oshikawa , Yasufumi Takahashi , Eriko Maruyama , Koichi Sakata , Hitoshi Ishibashi , Kentaroh Tomita , Mugijirou Uno , Keiko Matsumoto , Kohichi Utsunomiya
发明人： Kiyonori Tsuda , Koichi Kato , Yuki Oshikawa , Yasufumi Takahashi , Eriko Maruyama , Koichi Sakata , Hitoshi Ishibashi , Kentaroh Tomita , Mugijirou Uno , Keiko Matsumoto , Kohichi Utsunomiya
IPC分类号： G03G15/08
CPC分类号： G03G15/095 , G03G2215/0827 , G03G2215/0838
摘要： A developing device which can stably supply a developer to a latent image carrier by preventing the scattered developer from being discharged and thereby preventing the developer from being discharged despite that the amount of developer within the developing device does not increase, and an image forming apparatus using the developing device. A block member serving as a scattered developer discharge prevention member is provided so as to block a path through which the developer scattered as a result of a conveyance operation of a supply screw serving as a developer conveying member moves toward a developer discharge port. Accordingly, the scattered developer is prevented from reaching the developer discharge port and being discharged therefrom.
摘要翻译：一种显影装置，其能够通过防止散射的显影剂的排出而稳定地将显影剂供应到潜像载体，从而防止显影剂排出，尽管显影装置内的显影剂的量不增加;以及图像形成装置，其使用显影装置。设置用作散开的显影剂排出部件的块部件，以阻挡作为用作显影剂传送部件的供给螺杆的输送操作而散发的显影剂朝向显影剂排出口移动的路径。因此，防止散开的显影剂到达显影剂排出口并从中排出。

6. 发明授权

US07821677B2 Method and apparatus for image forming capable of accurately detecting displacement of transfer images and image density 有权
标题翻译：用于图像形成的方法和装置能够精确地检测转印图像的位移和图像密度
公开(公告)号：US07821677B2
公开(公告)日：2010-10-26
申请号：US11430978
申请日：2006-05-10
申请人： Kayoko Tanaka , Kohta Fujimori , Shin Hasegawa , Shinji Kato , Nobutaka Takeuchi , Naoto Watanabe , Yuushi Hirayama , Hitoshi Ishibashi , Osamu Ariizumi , Takashi Enami , Kazumi Kobayashi , Shinji Kobayashi , Fukutoshi Uchida , Ryohta Morimoto
发明人： Kayoko Tanaka , Kohta Fujimori , Shin Hasegawa , Shinji Kato , Nobutaka Takeuchi , Naoto Watanabe , Yuushi Hirayama , Hitoshi Ishibashi , Osamu Ariizumi , Takashi Enami , Kazumi Kobayashi , Shinji Kobayashi , Fukutoshi Uchida , Ryohta Morimoto
IPC分类号： H04N1/04
CPC分类号： G03G15/1605 , G03G15/235 , G03G15/6564 , G03G15/6567 , G03G2215/0158 , G03G2215/1623
摘要： An image forming apparatus includes a plurality of image carriers, an image forming mechanism, a seamless belt-like intermediate transfer body or a transfer material carrier, a detection mechanism, and an optical detecting apparatus. The optical detecting apparatus includes at least a printed board, and a plurality of photodetectors formed of a light-emitting element, a light-receiving element and light-shielding members, which are mounted on the printed board. The optical detecting apparatus is disposed such that it detects a belt surface adjacent to rollers of the intermediate transfer body or the transfer material carrier, and either displacement of a transfer image or image density is detected by a plurality of photodetectors detecting pattern images which are transferred from the plurality of image carriers to the image transfer body or the transfer material carrier.
摘要翻译：图像形成装置包括多个图像载体，图像形成机构，无缝带状中间转印体或转印材料载体，检测机构和光学检测装置。光学检测装置至少包括印刷电路板和安装在印刷电路板上的由发光元件，光接收元件和遮光部件形成的多个光电检测器。光学检测装置被布置成使得它检测到与中间转印体或转印材料载体的辊相邻的带表面，并且通过多个光电检测器检测转印图像的位移或图像浓度，检测转印的图案图像从多个图像载体到图像转印体或转印材料载体。

7. 发明授权

US07672602B2 Developing unit and image forming apparatus which forces consumption of toner 有权
标题翻译：显影单元和图像形成装置，其强制调色剂的消耗
公开(公告)号：US07672602B2
公开(公告)日：2010-03-02
申请号：US11508823
申请日：2006-08-24
申请人： Osamu Ariizumi , Kazumi Kobayashi , Shinji Kobayashi , Fukutoshi Uchida , Takashi Enami , Ryohta Morimoto , Shin Hasegawa , Shinji Kato , Hitoshi Ishibashi , Kohta Fujimori , Nobutaka Takeuchi , Naoto Watanabe , Kayoko Tanaka , Yushi Hirayama
发明人： Osamu Ariizumi , Kazumi Kobayashi , Shinji Kobayashi , Fukutoshi Uchida , Takashi Enami , Ryohta Morimoto , Shin Hasegawa , Shinji Kato , Hitoshi Ishibashi , Kohta Fujimori , Nobutaka Takeuchi , Naoto Watanabe , Kayoko Tanaka , Yushi Hirayama
IPC分类号： G03G15/08
CPC分类号： G03G15/5062 , G03G15/0849 , G03G15/0856 , G03G15/556 , G03G2215/00755
摘要： A developing unit supplies toner from a developing roller to an electrostatic latent image formed on an image carrier, and creates a visual image. A forced consumption unit causes, when a proportion of number of pixels used for forming the electrostatic latent image for a maximum image effective-width is equal to or less than a predetermined value, a forced consumption of toner by an amount corresponding to a difference between a toner amount corresponding to the number of pixels and a predetermined toner consumption amount. The forced consumption unit adds toner of an amount used in the forced consumption to an amount of toner to be supplied in a next imaging process.
摘要翻译：显影单元将调色剂从显影辊供给到形成在图像载体上的静电潜像，并产生视觉图像。当用于形成最大图像有效宽度的静电潜像的像素数量的比例等于或小于预定值时，强制消耗单元导致调色剂的强制消耗量对应于与像素数相对应的调色剂量和预定的调色剂消耗量。强制消耗单元将在强制消耗中使用的量的调色剂添加到在下一个成像处理中供应的调色剂量。

8. 发明申请

US20090324267A1 IMAGE FORMING APPARATUS AND IMAGE-DENSITY CONTROL METHOD 有权
标题翻译：图像形成装置和图像密度控制方法
公开(公告)号：US20090324267A1
公开(公告)日：2009-12-31
申请号：US12482782
申请日：2009-06-11
申请人： Akira YOSHIDA , Shin Hasegawa , Hitoshi Ishibashi , Yoshiaki Miyashita , Kohta Fujimori , Nobutaka Takeuchi , Shuji Hirai , Kayoko Tanaka , Yushi Hirayama , Tetsuya Muto
发明人： Akira YOSHIDA , Shin Hasegawa , Hitoshi Ishibashi , Yoshiaki Miyashita , Kohta Fujimori , Nobutaka Takeuchi , Shuji Hirai , Kayoko Tanaka , Yushi Hirayama , Tetsuya Muto
IPC分类号： G03G15/00
CPC分类号： G03G15/5058 , G03G15/0131 , G03G2215/00059 , G03G2215/00063
摘要： An image forming apparatus forms a plurality of tone patterns of different colors, each of which containing a plurality of toner patches having different toner densities. Some of the toner patches in each of the tone patterns are formed with a predetermined fixed developing bias and the rest of the toner patches in each of the tone patterns are formed with developing biases set based on previous developing biases that have been obtained through a previous control process. The largest toner density of the toner patches in each of the tone patterns is determined based on a magnitude relation of previous index values obtained through the previous control process.
摘要翻译：图像形成装置形成不同颜色的多个色调图案，每个色调图案包含具有不同调色剂浓度的多个调色剂贴片。每个色调图案中的一些调色剂贴片以预定的固定的显影偏压形成，并且每个色调图案中的其余调色剂贴片形成有基于先前显影偏差设定的显影偏压，控制过程。基于通过先前的控制处理获得的先前指标值的大小关系确定每个色调图案中的调色剂贴片中最大的调色剂浓度。

9. 发明申请

US20090238591A1 Image forming condition adjustment control for image forming apparatus 有权
标题翻译：图像形成装置的图像形成条件调整控制
公开(公告)号：US20090238591A1
公开(公告)日：2009-09-24
申请号：US12382506
申请日：2009-03-18
申请人： Naoto Watanabe , Tatsuya Niimi , Hitoshi Ishibashi
发明人： Naoto Watanabe , Tatsuya Niimi , Hitoshi Ishibashi
IPC分类号： G03G15/043 , G03G15/06
CPC分类号： G03G15/5037
摘要： An image forming apparatus includes a charge unit, an exposure unit, an exposure voltage detector, a development unit, and a concentration detector. The exposure voltage detector detects a potential of latent image formed as a test pattern on an image carrier. The concentration detector detects concentration of developed test pattern. The image forming apparatus further includes an exposure power controller, an exposure ratio controller, a charging voltage controller, a development bias voltage controller, and an image forming condition adjustment controller. A suitable image forming condition is computed using test patterns formed by changing combinations of charging voltage, exposure power, and exposure duty. The charging voltage is changed in two levels or more. The exposure power is changed in three levels or more. The exposure duty per unit area is changed in two levels or more.
摘要翻译：图像形成装置包括充电单元，曝光单元，曝光电压检测器，显影单元和浓度检测器。曝光电压检测器检测在图像载体上形成为测试图案的潜像的电位。浓度检测器检测显影测试图案的浓度。图像形成装置还包括曝光功率控制器，曝光比率控制器，充电电压控制器，显影偏压控制器和图像形成条件调节控制器。使用通过改变充电电压，曝光功率和曝光占空比的组合形成的测试图案来计算合适的图像形成条件。充电电压在两个等级以上更改。曝光功率在三个等级以上更改。每单位面积的曝光负荷在两个等级以上更改。

10. 发明申请

US20090110413A1 IMAGE FORMING APPARATUS AND IMAGE DENSITY CONTROL METHOD 有权
标题翻译：图像形成装置和图像密度控制方法
公开(公告)号：US20090110413A1
公开(公告)日：2009-04-30
申请号：US12246601
申请日：2008-10-07
申请人： Nobutaka Takeuchi , Shin Hasegawa , Hitoshi Ishibashi , Shuji Hirai , Kohta Fujimori , Kayoko Tanaka , Yushi Hirayama , Akira Yoshida
发明人： Nobutaka Takeuchi , Shin Hasegawa , Hitoshi Ishibashi , Shuji Hirai , Kohta Fujimori , Kayoko Tanaka , Yushi Hirayama , Akira Yoshida
IPC分类号： G03G15/08
CPC分类号： G03G15/0853 , G03G15/5058 , G03G2215/0888
摘要： An image forming apparatus and an image density control method for controlling image density in the image forming apparatus, involving adjusting a toner concentration control reference value in accordance with an amount of the toner replaced in a developing device so as to adjust the image density to maintain a consistent developability and changing image forming intervals in accordance with an amount of the toner replaced in the developing device during continuous printing operation.
摘要翻译：一种用于控制图像形成装置中的图像浓度的图像形成装置和图像浓度控制方法，包括根据在显影装置中更换的调色剂量调节调色剂浓度控制基准值，以便调节图像浓度以维持根据在连续打印操作期间在显影装置中更换的调色剂的量的一致的显影性和变化的图像形成间隔。

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