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1. 发明授权

EP1785777B1 Image forming apparatus with correction of toner density control 有权
标题翻译：与调色剂浓度控制的校正的图像形成装置
公开(公告)号：EP1785777B1
公开(公告)日：2011-05-18
申请号：EP06123819.2
申请日：2006-11-10
申请人： Ricoh Company, Ltd.
发明人： Takeuchi, Nobutaka , Kato, Shinji , Hasegawa, Shin , Fujimori, Kohta , Tanaka, Kayoko , Hirayama, Yuji , Enami, Takashi , Kobayashi, Kazumi , Shimizu, Kiichirou
IPC分类号： G03G15/00 , G03G15/08
CPC分类号： G03G15/5041 , G03G15/0849 , G03G15/0853

2. 发明公开

EP1788457A3 Image forming apparatus and toner concentration controlling method 审中-公开
标题翻译：图像用于控制调色剂浓度形成装置和方法
公开(公告)号：EP1788457A3
公开(公告)日：2007-05-30
申请号：EP06016218.7
申请日：2006-08-03
申请人： Ricoh Company, Ltd.
发明人： Takeuchi, Nobutaka , Hasegawa, Shin , Fujimori, Kohta , Ikegami, Kayoko , Hirayama, Yushi , Ishibashi, Hitoshi , Ariizumi, Osamu , Watanabe, Naoto , Kato, Shinji , Kobayashi, Shinji , Kobayashi, Kazumi , Enami, Takashi , Uchida, Fukutoshi , Morimoto, Ryohta
IPC分类号： G03G15/08
CPC分类号： G03G15/0853 , G03G15/0891 , G03G2215/0607 , G03G2215/0802
摘要： The image forming apparatus and toner concentration controlling method relates to a developing device that holds a two-component developer, a detecting unit that outputs (S3) a reference output value V t0 and (S7,S8) a second output value V t1 , V t2 when the two-component developer is stirred and carried at a stirring and carrying speed corresponding to a second image forming mode, a stirring/carrying member that stirs and carries the two-component developer, and a controlling unit that controls (S9,S10) the toner concentration based on the reference output value V tref and corrected output value V t obtained by correcting (S5,S50) any former output value.

3. 发明公开

EP2103998A1 Image forming apparatus 审中-公开
标题翻译：成像设备
公开(公告)号：EP2103998A1
公开(公告)日：2009-09-23
申请号：EP09154310.8
申请日：2009-03-04
申请人： Ricoh Company, Ltd.
发明人： Kobayashi, Kazumi
IPC分类号： G03G15/00
CPC分类号： B41J13/106 , B41J11/007 , B65H31/3054 , B65H31/3063 , B65H31/3081 , B65H2405/1115 , G03G15/6547 , G03G15/6552 , G03G2215/00421
摘要： An image forming apparatus (10) includes an image reader (114), an image forming unit (110), a sheet discharge device (112), a sheet receiver (50), and a sheet moving mechanism (131). The image reader (114) provided substantially at an upper portion of the image forming apparatus (10) reads an image of a document. The image forming unit (110) disposed substantially below the image reader (114) through some space forms an image based on image information read by the image reader (114) and transfers the image onto a recording medium. The sheet discharge device (112) discharges the recording medium on which an image is formed. The sheet receiver (50) provided in the space between an upper portion of the image forming unit (110) and a bottom portion of the image reader (114) receives the recording medium discharged by the sheet discharge device (112). The sheet moving mechanism (131) moves the recording medium that is discharged onto the sheet receiver (50) by the sheet discharge device (131) in a desired direction.
摘要翻译：图像形成装置（10）包括图像读取器（114），图像形成单元（110），片材排出装置（112），片材接收器（50）和片材移动机构（131）。设置在图像形成装置（10）的大致上部的图像读取器（114）读取原稿的图像。基本上位于图像读取器（114）下方的图像形成单元（110）通过一些空间形成基于图像读取器（114）读取的图像信息的图像，并将该图像转印到记录介质上。片材排出装置（112）排出形成有图像的记录介质。设置在图像形成单元（110）的上部与图像读取器（114）的底部之间的空间中的片材接收器（50）接收由片材排出装置（112）排出的记录介质。片材移动机构131使通过片材排出装置131向片材接受部件50排出的记录介质向所希望的方向移动。

4. 发明公开

EP1788457A2 Image forming apparatus and toner concentration controlling method 审中-公开
标题翻译：成像设备和调色剂浓度控制方法
公开(公告)号：EP1788457A2
公开(公告)日：2007-05-23
申请号：EP06016218.7
申请日：2006-08-03
申请人： Ricoh Company, Ltd.
发明人： Takeuchi, Nobutaka , Hasegawa, Shin , Fujimori, Kohta , Ikegami, Kayoko , Hirayama, Yushi , Ishibashi, Hitoshi , Ariizumi, Osamu , Watanabe, Naoto , Kato, Shinji , Kobayashi, Shinji , Kobayashi, Kazumi , Enami, Takashi , Uchida, Fukutoshi , Morimoto, Ryohta
IPC分类号： G03G15/08
CPC分类号： G03G15/0853 , G03G15/0891 , G03G2215/0607 , G03G2215/0802
摘要： The image forming apparatus includes a developing device (20) that holds a two-component developer and develops an image, a detecting unit (26) that outputs a reference output value and a second output value when the two-component developer is stirred and carried at a stirring and carrying speed corresponding to a second image forming mode, a stirring/carrying member (23, 24) that stirs and carries the two-component developer, and a controlling unit (100) that controls the toner concentration, when forming an image in a first image forming mode, based on the reference output value, and controls the toner concentration, when forming an image in the second image forming mode, a corrected output value obtained by correcting an output value in the second image forming mode with a difference value between the reference output value and the second output value.
摘要翻译：该图像形成装置包括：保持双组分显影剂并显影图像的显影装置（20）;检测单元（26），当双组分显影剂被搅拌和携带时输出参考输出值和第二输出值在与第二图像形成模式相对应的搅拌和传送速度下，搅拌和承载双组分显影剂的搅拌/承载部件（23,24）以及控制单元（100），所述控制单元（100）在形成以第一图像形成模式基于参考输出值来控制调色剂浓度，并且当在第二图像形成模式下形成图像时，控制调色剂浓度通过校正第二图像形成模式中的输出值而获得的校正输出值参考输出值和第二输出值之间的差值。

5. 发明公开

EP1785779A1 Correction of toner concentration sensor output using averaged image coverage data 有权
标题翻译： Bildformungsapparat mit Tonerdichtekontrolle
公开(公告)号：EP1785779A1
公开(公告)日：2007-05-16
申请号：EP06023446.5
申请日：2006-11-10
申请人： Ricoh Company, Ltd.
发明人： Kato, Shinji , Hasegawa, Shin , Fujimori, Kohta , Takeuchi, Nobutaka , Tanaka, Kayoko , Hirayama, Yushi , Kobayashi, Kazumi , Shimizu, Kiichirou , Enami, Takashi
IPC分类号： G03G15/08 , G03G15/00
CPC分类号： G03G15/5041 , G03G15/0849 , G03G15/0853 , G03G15/0889
摘要： An image forming apparatus in which a predetermined image density can be obtained by correcting a toner density control target value. The toner density of the developer is controlled so that an output value Vt of a magnetic permeability sensor approaches a target output value Vt ref . In addition, the target output value Vt ref is corrected (S7) in accordance with image coverage history information of output images transferred to a transfer paper and image coverage ratio history information of output images determined from the image coverage thereof and the size of the transfer paper. This history information comprises, for example, a cumulative average value of the image coverage or the image coverage ratio per transfer paper. It may also comprise a moving average value of the image coverage or the image coverage ratio per transfer material.
摘要翻译：一种图像形成装置，其中可以通过校正调色剂浓度控制目标值来获得预定的图像浓度。控制显影剂的调色剂浓度使磁导率传感器的输出值Vt接近目标输出值Vt ref。此外，根据传送到转印纸的输出图像的图像覆盖历史信息和从其图像覆盖确定的输出图像的图像覆盖率历史信息和传送的大小来校正（S7）目标输出值Vt ref（S7）纸。该历史信息例如包括图像覆盖的累积平均值或每个转印纸的图像覆盖率。它还可以包括图像覆盖的移动平均值或每个转印材料的图像覆盖率。

6. 发明授权

EP1785779B1 Image forming apparatus with toner density control 有权
标题翻译：与调色剂浓度控制的图像形成装置
公开(公告)号：EP1785779B1
公开(公告)日：2011-05-11
申请号：EP06023446.5
申请日：2006-11-10
申请人： Ricoh Company, Ltd.
发明人： Kato, Shinji , Hasegawa, Shin , Fujimori, Kohta , Takeuchi, Nobutaka , Tanaka, Kayoko , Hirayama, Yushi , Kobayashi, Kazumi , Shimizu, Kiichirou , Enami, Takashi
IPC分类号： G03G15/08 , G03G15/00
CPC分类号： G03G15/5041 , G03G15/0849 , G03G15/0853 , G03G15/0889

7. 发明公开

EP1785777A1 Correction of toner concentration control using averaged image coverage data 有权
标题翻译： Bildformungsapparat mit Korrektur der Tonerdichtekontrolle
公开(公告)号：EP1785777A1
公开(公告)日：2007-05-16
申请号：EP06123819.2
申请日：2006-11-10
申请人： Ricoh Company, Ltd.
发明人： Takeuchi, Nobutaka , Kato, Shinji , Hasegawa, Shin , Fuijimori, Kohta , Tanaka, Kayoko , Hirayama, Yuji , Enami, Takashi , Kobayashi, Kazumi , Shimizu, Kiichirou
IPC分类号： G03G15/00 , G03G15/08
CPC分类号： G03G15/5041 , G03G15/0849 , G03G15/0853
摘要： An image forming apparatus in which a predetermined image density can be obtained by correcting a toner density control target value without consuming toner. The output The output value Vt of the magnetic permeability sensor and the target output value Vt ref are compared, and the toner density is controlled by controlling a powder pump on the basis of the comparative result thereof so that the output value Vt approximates the target output value Vt ref . In addition, the target output value Vt ref is corrected on the basis of the detected result of the image coverage ratio. The image coverage ratio is determined as a moving average wherein the sampling number (number N of images on which average is calculated) may be altered.
摘要翻译：通过在不消耗调色剂的情况下校正调色剂浓度控制目标值，可以获得预定图像浓度的图像形成装置。输出比较磁导率传感器的输出值Vt和目标输出值Vt ref，并根据其比较结果控制粉末泵来控制调色剂浓度，使得输出值Vt近似于目标输出值Vt参考此外，根据检测到的图像覆盖率的结果来校正目标输出值Vt ref。图像覆盖率被确定为移动平均值，其中可以改变采样数（计算平均值的图像的数量N）。

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