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1.发明授权Image forming apparatus and method for controlling tone characteristics based on tone-control patch image 失效用于基于色调控制补片图像来控制色调特征的图像形成装置和方法公开(公告)号：US07680425B2
公开(公告)日：2010-03-16
申请号：US10893743
申请日：2004-07-16
申请人： Takashi Hama , Hidetsugu Shimura , Keiichi Taguchi , Hiroshi Nakazato , Ken Ikuma , Hidenori Kin
发明人： Takashi Hama , Hidetsugu Shimura , Keiichi Taguchi , Hiroshi Nakazato , Ken Ikuma , Hidenori Kin
IPC分类号： G03G15/00
CPC分类号： G03G15/5058 , G03G15/0131 , G03G2215/00059 , G03G2215/00063 , G03G2215/0177 , H04N1/4078
摘要： An image It is formed as a patch image which includes a header image portion Ih of a solid image having a length of a circumferential length of a developing roller or more, and a gradation image portion Ig progressively varied in the tone level thereof from the maximum level to the minimum level. The densities of the patch image on an intermediate transfer belt are sampled. However, the sampling results contain errors resulting from noises or variations and hence, are subjected to a noise removal process, a periodical variation correction process and a reverse correction process. The results detected on the intermediate transfer belt do not always coincide with image densities (OD values) on a recording material. Therefore, the detection results are converted into the OD values, based on which tone characteristics of an apparatus is estimated. Then a tone correction table is updated in a manner to compensate for the tone characteristics. This approach is taken to improve image quality on the recording material.
摘要翻译： 图像形成为补片图像，其包括具有显影辊或其以上的周长的长度的实心图像的标题图像部分Ih，并且其色调级别中的渐变图像部分Ig从最大值逐渐变化 水平达到最低水平。 对中间转印带上的贴片图像的密度进行采样。 然而，采样结果包含由噪声或变化引起的误差，因此，进行噪声去除处理，周期性变化校正处理和反向校正处理。 在中间转印带上检测到的结果并不总是与记录材料上的图像密度（OD值）重合。 因此，根据估计装置的音调特性，将检测结果转换成OD值。 然后以补偿色调特性的方式更新色调校正表。 采取这种方法来改善记录材料上的图像质量。
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2.发明申请Image forming apparatus, a control method for the same and an image forming method 失效图像形成装置，其控制方法和图像形成方法公开(公告)号：US20050030562A1
公开(公告)日：2005-02-10
申请号：US10893743
申请日：2004-07-16
申请人： Takashi Hama , Hidetsugu Shimura , Keiichi Taguchi , Hiroshi Nakazato , Ken Ikuma , Hidenori Kin
发明人： Takashi Hama , Hidetsugu Shimura , Keiichi Taguchi , Hiroshi Nakazato , Ken Ikuma , Hidenori Kin
CPC分类号： G03G15/5058 , G03G15/0131 , G03G2215/00059 , G03G2215/00063 , G03G2215/0177 , H04N1/4078
摘要： An image It is formed as a patch image which includes a header image portion Ih of a solid image having a length of a circumferential length of a developing roller or more, and a gradation image portion Ig progressively varied in the tone level thereof from the maximum level to the minimum level. The densities of the patch image on an intermediate transfer belt are sampled. However, the sampling results contain errors resulting from noises or variations and hence, are subjected to a noise removal process, a periodical variation correction process and a reverse correction process. The results detected on the intermediate transfer belt do not always coincide with image densities (OD values) on a recording material. Therefore, the detection results are converted into the OD values, based on which tone characteristics of an apparatus is estimated. Then a tone correction table is updated in a manner to compensate for the tone characteristics. This approach is taken to improve image quality on the recording material.
摘要翻译： 图像形成为补片图像，其包括具有显影辊或其以上的周长的长度的实心图像的标题图像部分Ih，并且其色调级别中的渐变图像部分Ig从最大值逐渐变化 水平达到最低水平。 对中间转印带上的贴片图像的密度进行取样。 然而，采样结果包含由噪声或变化引起的误差，因此，进行噪声去除处理，周期性变化校正处理和反向校正处理。 在中间转印带上检测到的结果并不总是与记录材料上的图像密度（OD值）重合。 因此，根据估计装置的音调特性，将检测结果转换成OD值。 然后以补偿色调特性的方式更新色调校正表。 采取这种方法来改善记录材料上的图像质量。
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3.发明授权Image forming apparatus, control method and toner consumption calculating apparatus and method 失效图像形成装置，控制方法和调色剂消耗计算装置及方法公开(公告)号：US07269362B2
公开(公告)日：2007-09-11
申请号：US10855981
申请日：2004-05-27
IPC分类号： G03G15/08
CPC分类号： G03G15/5058 , G03G15/556 , G03G2215/0177
摘要： When the remaining toner amount within a developer is relatively large, a control target value of a toner amount is set to Ttgt1, and a lower limit value of a toner amount which can regarded proper is set to TL1. When the density of a patch image formed under a predetermined condition is smaller than a minimum guaranteed density Dma, it is determined abnormality has occurred in the apparatus. Since the characteristic of toner within the developer changes as the remaining toner amount decreases, the control target value is changed to Ttgt2 and the lower limit value is set to TL2 in light of this. In this fashion, regardless of whether the toner characteristic has changed, abnormality in the apparatus is detected without fail.
摘要翻译： 当显影剂中的剩余调色剂量相对较大时，将调色剂量的控制目标值设置为Ttgt 1，将可以认为适当的调色剂量的下限值设置为TL 1。 当在预定条件下形成的贴片图像的浓度小于最小保证密度Dma时，确定在装置中发生异常。 由于显影剂中的调色剂的特性随着剩余调色剂量的减少而发生变化，所以根据此，将控制目标值改变为Ttgt2，将下限值设定为TL2。 以这种方式，无论调色剂特性是否改变，装置中的异常都被检测到。
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4.发明授权Apparatus for and method of forming image under controlled image forming condition 有权在受控图像形成条件下形成图像的装置和方法公开(公告)号：US06871026B2
公开(公告)日：2005-03-22
申请号：US10642521
申请日：2003-08-18
CPC分类号： G03G15/556 , G03G15/0131 , G03G15/0855 , G03G15/0863 , G03G15/5058 , G03G2215/00037 , G03G2215/00042 , G03G2215/00059 , G03G2215/00063 , G03G2215/0177 , G03G2221/183
摘要： A condition controlling process is executed when parameters expressing a state of toner within a developer reaches predetermined threshold values. On each one of two parameters, namely, a dot count value which is indicative of a toner consumption amount (an integrated value of the number of dots formed using an exposure beam) and a developer roller rotating time which is indicative of the degree of toner fatigue, a threshold value (denoted at the dotted lines) which triggers execution of the condition controlling process is set. At the time that the path d of dots which are expressed as combinations of these parameters intersects each dotted line (the intersections (1) through (6)), the condition controlling process is executed.
摘要翻译： 当表达显影剂中的调色剂状态的参数达到预定阈值时，执行条件控制处理。 在两个参数中的每个参数上，即指示调色剂消耗量（使用曝光光束形成的点数的积分值）的点计数值和指示调色剂程度的显影剂辊旋转时间 疲劳，设定触发条件控制处理的执行的阈值（用虚线表示）。 在表示为这些参数的组合的点的路径d与每个虚线（交叉点（1）至（6））相交的时间，执行条件控制处理。
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5.发明申请Image forming apparatus, control method and toner consumption calculating apparatus and method 失效图像形成装置，控制方法和调色剂消耗计算装置及方法公开(公告)号：US20050185973A1
公开(公告)日：2005-08-25
申请号：US10855981
申请日：2004-05-27
IPC分类号： G03G15/00
CPC分类号： G03G15/5058 , G03G15/556 , G03G2215/0177
摘要： When the remaining toner amount within a developer is relatively large, a control target value of a toner amount is set to Ttgt1 and a lower limit value of a toner amount which can regarded proper is set to TL1. When the density of a patch image formed under a predetermined condition is smaller than a minimum guaranteed density Dma, it is determined abnormality has occurred in the apparatus. Since the characteristic of toner within the developer changes as the remaining toner amount decreases, the control target value is changed to Ttgt2 and the lower limit value is set to TL2 in light of this. In this fashion, regardless of whether the toner characteristic has changed, abnormality in the apparatus is detected without fail.
摘要翻译： 当显影剂中的剩余调色剂量相对较大时，将调色剂量的控制目标值设置为Ttgt 1，将可以认为适当的调色剂量的下限值设置为TL 1。 当在预定条件下形成的贴片图像的浓度小于最小保证密度Dma时，确定在装置中发生异常。 由于显影剂中的调色剂的特性随着剩余调色剂量的减少而发生变化，所以根据此，将控制目标值改变为Ttgt2，将下限值设定为TL2。 以这种方式，无论调色剂特性是否改变，装置中的异常都被检测到。
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6.发明授权Image forming apparatus, toner-adhesion calculation method and data processing method 失效图像形成装置，调色剂附着计算方法和数据处理方法公开(公告)号：US06909858B2
公开(公告)日：2005-06-21
申请号：US10633689
申请日：2003-08-05
CPC分类号： G03G15/5058 , G03G2215/00042 , G03G2215/0177
摘要： Output signals Vp from a density sensor are sampled for plural positions on an intermediate transfer belt and an amount of toner adhesion is determined based on the results of sampling. Since these sample data pieces may contain noises, each predetermined number of data pieces of higher order and of lower order are removed from the resultant sample data string. The removed data pieces are each replaced by an average value Vpavg of the other sample data pieces. The amount of toner adhesion is calculated based on the data string thus replaced.
摘要翻译： 来自密度传感器的输出信号Vp被采样到中间转印带上的多个位置，并且基于取样结果确定调色剂附着量。 由于这些样本数据可能含有噪声，因此从所得到的样本数据串中去除每个预定数量的高阶和低阶数据。 删除的数据片段被其他样本数据的平均值Vpavg替换。 调色剂附着量基于这样替换的数据串计算。
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7.发明授权Image forming apparatus and image forming method involving application of a developing bias to a toner carrier 失效图像形成装置和图像形成方法，其涉及向调色剂载体施加显影偏压公开(公告)号：US07068957B2
公开(公告)日：2006-06-27
申请号：US10622193
申请日：2003-07-18
申请人： Hidetsugu Shimura , Takashi Hama
发明人： Hidetsugu Shimura , Takashi Hama
CPC分类号： B41J2/41
摘要： Optimization of a density control factor accompanying formation of a patch image is executed every time a predetermined period of time elapses since the end of a preceding image forming operation. Since an image is formed at regular intervals in this manner, it is possible to suppress a density variation which is created as toner carried on a developer roller is left unused for long. This effect further improves when the developer roller is rotated idle prior to formation of a patch image or regularly at predetermined timing.
摘要翻译： 每当从先前图像形成操作结束起经过预定时间段时，执行伴随形成贴片图像的浓度控制因子的优化。 由于以这种方式以规则的间隔形成图像，所以可以抑制由于在显影辊上承载的调色剂长时间不使用而产生的浓度变化。 当显影辊在形成贴片图像之前或者在预定的时刻定期旋转时，这种效果进一步改善。
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公开(公告)号：US5453819A
公开(公告)日：1995-09-26
申请号：US214268
申请日：1994-03-17
申请人： Hidetsugu Shimura , Hajime Kurihara , Akihiko Ikegami , Takehiko Okamura , Takashi Hama , Kenjiro Yoshioka
发明人： Hidetsugu Shimura , Hajime Kurihara , Akihiko Ikegami , Takehiko Okamura , Takashi Hama , Kenjiro Yoshioka
IPC分类号： G03G15/02
CPC分类号： B82Y15/00 , G03G15/0216
摘要： A charger capable of reliably and uniformly maintaining a discharging gap formed in the vicinity of a contact portion between a charging member and a photosensitive member. A charging member 101 is arranged by supporting and fixing both ends of a flexible film 102 by means of support members 103 to 105. The film 102 forms a flexible portion oriented downwardly from fixed ends S1, S2. The film 102 is brought into contact with the member 110 to be charged in a state in which an unsupported side of the film 102 is oriented toward the downstream side in the rotating direction of the member 110 to be charged. Then, the film 102 is brought into contact with the member 110 to be charged in a contact area N, and the radius of curvature of the film 102 in a zone P2 located downstream of that zone N in the rotating direction of the member 110 to be charged becomes smaller than the radius of curvature of the film 102 in an upstream zone P1.
摘要翻译： 一种能够可靠且均匀地保持形成在充电构件和感光构件之间的接触部分附近的放电间隙的充电器。 通过支撑构件103至105支撑和固定柔性膜102的两端来布置充电构件101.膜102形成从固定端S1，S2向下定向的柔性部分。 膜102与构件110接触，以使膜102的未支撑侧朝向要被充电的构件110的旋转方向的下游侧的状态进行充电。 然后，使膜102与构件110接触，以在接触区域N中被填充，并且膜102在位于构件110的旋转方向的下游的区域P2中的曲率半径为 被充电变得小于上游区域P1中的膜102的曲率半径。
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公开(公告)号：US07251423B2
公开(公告)日：2007-07-31
申请号：US11378425
申请日：2006-03-20
申请人： Hidetsugu Shimura , Takashi Hama
发明人： Hidetsugu Shimura , Takashi Hama
IPC分类号： G03G15/00
CPC分类号： B41J2/41
摘要： Optimization of a density control factor accompanying formation of a patch image is executed every time a predetermined period of time elapses since the end of a preceding image forming operation. Since an image is formed at regular intervals in this manner, it is possible to suppress a density variation which is created as toner carried on a developer roller is left unused for long. This effect further improves when the developer roller is rotated idle prior to formation of a patch image or regularly at predetermined timing.
摘要翻译： 每当从先前图像形成操作结束起经过预定时间段时，执行伴随形成贴片图像的浓度控制因子的优化。 由于以这种方式以规则的间隔形成图像，所以可以抑制由于在显影辊上承载的调色剂长时间不使用而产生的浓度变化。 当显影辊在形成贴片图像之前或者在预定的时刻定期旋转时，这种效果进一步改善。
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公开(公告)号：US20060204261A1
公开(公告)日：2006-09-14
申请号：US11432347
申请日：2006-05-12
IPC分类号： G03G15/00
CPC分类号： G03G15/5041 , G03G15/0855 , G03G15/0863 , G03G15/5058 , G03G2215/00042 , G03G2215/00059
摘要： In a density control technique wherein a density of a toner image formed as a patch image is detected for performing density control based on the detected result, detection errors are decreased so as to properly set a density control factor. The density control factor is optimized based on a variation rate of the patch image densities against a varied density control factor. The detected results of the patch image densities are corrected based on information on an image carrier acquired before the formation of the patch images.
摘要翻译： 在密度控制技术中，基于检测结果检测形成为补片图像的调色剂图像的浓度，以进行浓度控制，降低检测误差，从而适当地设定浓度控制因子。 密度控制因子基于斑块图像密度对不同密度控制因子的变化率进行优化。 基于在形成补丁图像之前获取的图像载体的信息来校正斑块图像浓度的检测结果。
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