公开(公告)号：US07126725B2

公开(公告)日：2006-10-24

申请号：US10122656

申请日：2002-04-15

申请人： Ryuji Okutomi ,  Hiroyuki Futami ,  Jun Nakagawa ,  Tadayuki Ueda ,  Eiji Nishikawa

发明人： Ryuji Okutomi ,  Hiroyuki Futami ,  Jun Nakagawa ,  Tadayuki Ueda ,  Eiji Nishikawa

IPC分类号： H04N1/04

CPC分类号： H04N1/1013 ,  H04N1/12 ,  H04N1/401

摘要： In a document reading apparatus having a scanning exposure reading system by which a document placed on a platen is scanning exposed by an optical system and a document image is read out, or a document reading system by which a moving document is read out by an optical system, at the first collection position and the second collection position which are different in the sub-scanning direction of the scanning expose on a reference density plate, the first shading correction data and the second shading correction data are respectively read in the main scanning direction, and the shading position is corrected on the basis of the read first and second shading correction data.

公开(公告)号：US06911993B2

公开(公告)日：2005-06-28

申请号：US10435743

申请日：2003-05-08

申请人： Eiji Nishikawa ,  Hiroyuki Maruyama ,  Hiroyuki Arai ,  Toshihiro Motoi ,  Kenji Izumiya ,  Ryuji Okutomi ,  Shinobu Kishi ,  Satoshi Ogata ,  Kenichi Ozawa ,  Tadayuki Ueda ,  Yumiko Higashi

发明人： Eiji Nishikawa ,  Hiroyuki Maruyama ,  Hiroyuki Arai ,  Toshihiro Motoi ,  Kenji Izumiya ,  Ryuji Okutomi ,  Shinobu Kishi ,  Satoshi Ogata ,  Kenichi Ozawa ,  Tadayuki Ueda ,  Yumiko Higashi

IPC分类号： B41J29/393 ,  G03F3/08 ,  G03G15/01 ,  G06F15/00 ,  G06K15/12 ,  H04N1/50

CPC分类号： B41J29/393 ,  G03G15/0194 ,  G03G2215/0119 ,  G03G2215/0161 ,  G06K15/129 ,  H04N1/506

摘要： In an image forming apparatus for forming a color image by superposing component color images, a control device obtains position data representing a forming position of each of plural registration mark images for the component color images with respect to a positional reference value arbitrarily determined, divides the position data into each of a unit reference range representing a range in which one mark image is formed, converts the position data divided for each unit reference range into those based on respective reference values representing the front edge of the unit reference ranges, extracts the position data representing ranges common to the mutually overlapping ranges each of which is represented by a couple of position data corresponding to the rising and falling edges of a passage timing pulse as read position data of the mark image of the component color, and calculates the amounts of positional deviations of the component color images from one another on the basis of the position data extracted.

摘要翻译： 在通过叠加分量彩色图像形成彩色图像的图像形成装置中，控制装置获取表示相对于任意确定的位置基准值的分量彩色图像的多个对准标记图像中的每一个的形成位置的位置数据， 将位置数据分配到表示形成一个标记图像的范围的单位基准范围的每一个中，根据表示单位基准范围的前沿的各个基准值，将每个单位基准范围划分的位置数据转换为基准值， 数据表示相互重叠的范围共有的范围，每个数据由对应于通过定时脉冲的上升沿和下降沿的一对位置数据表示为分量颜色的标记图像的读取位置数据，并且计算 基于此，分量彩色图像彼此的位置偏差 提取位置数据。

公开(公告)号：US06839078B2

公开(公告)日：2005-01-04

申请号：US10378801

申请日：2003-03-04

申请人： Kenji Izumiya ,  Hiroyuki Maruyama ,  Toshihiro Motoi ,  Ryuji Okutomi ,  Shinobu Kishi ,  Satoshi Ogata ,  Eiji Nishikawa ,  Tadayuki Ueda ,  Yumiko Higashi

发明人： Kenji Izumiya ,  Hiroyuki Maruyama ,  Toshihiro Motoi ,  Ryuji Okutomi ,  Shinobu Kishi ,  Satoshi Ogata ,  Eiji Nishikawa ,  Tadayuki Ueda ,  Yumiko Higashi

IPC分类号： B41J2/44 ,  G02B26/12 ,  G03G15/00 ,  G03G15/01 ,  G03G15/04 ,  G03G21/00 ,  H04N1/04 ,  H04N1/113 ,  H04N1/23 ,  B41J2/435 ,  B41J2/47

CPC分类号： G02B26/122

摘要： There is described a duplex image-forming apparatus having a function of forming images onto both sides of a transfer material. The apparatus includes an image-forming section to respectively form an obverse-side image and a reverse-side image on a photoreceptor element by scanning a light beam, modulated with image signals based on pixel-clock signals and reflected from a polygon mirror rotating at an operating velocity based on polygon-clock signals; a transferring section to transfer said obverse-side image and said reverse-side image onto both surfaces of said recording sheet; a fixing section to fix the images onto both surfaces of said recording sheet; and a clock-frequency changing section to change a pixel-clock frequency, and a polygon-clock frequency, corresponding to a degree of shrinkage of said recording sheet caused by a fixing operation performed in said fixing section, at a transition time of an image-forming operation from one side to another side.

公开(公告)号：US07876342B2

公开(公告)日：2011-01-25

申请号：US12211632

申请日：2008-09-16

申请人： Eiji Nishikawa ,  Hiroyuki Maruyama ,  Hiroyuki Arai ,  Toshihiro Motoi ,  Kenji Izumiya ,  Ryuji Okutomi ,  Shinobu Kishi ,  Satoshi Ogata ,  Kenichi Ozawa ,  Tadayuki Ueda ,  Yumiko Higashi

发明人： Eiji Nishikawa ,  Hiroyuki Maruyama ,  Hiroyuki Arai ,  Toshihiro Motoi ,  Kenji Izumiya ,  Ryuji Okutomi ,  Shinobu Kishi ,  Satoshi Ogata ,  Kenichi Ozawa ,  Tadayuki Ueda ,  Yumiko Higashi

IPC分类号： G03G15/01

CPC分类号： B41J29/393 ,  G03G15/0194 ,  G03G2215/0119 ,  G03G2215/0161 ,  G06K15/129 ,  H04N1/506

摘要： In an image forming apparatus for forming a color image by superposing component color images, a control device obtains position data representing a forming position of each of plural registration mark images for the component color images with respect to a positional reference value arbitrarily determined, divides the position data into each of a unit reference range representing a range in which one mark image is formed, converts the position data divided for each unit reference range into those based on respective reference values representing the front edge of the unit reference ranges, extracts the position data representing ranges common to the mutually overlapping ranges each of which is represented by a couple of position data corresponding to the rising and falling edges of a passage timing pulse as read position data of the mark image of the component color, and calculates the amounts of positional deviations of the component color images from one another on the basis of the position data extracted.

摘要翻译： 在通过叠加分量彩色图像形成彩色图像的图像形成装置中，控制装置获取表示相对于任意确定的位置基准值的分量彩色图像的多个对准标记图像中的每一个的形成位置的位置数据， 将位置数据分配到表示形成一个标记图像的范围的单位基准范围的每一个中，根据表示单位基准范围的前沿的各个基准值，将每个单位基准范围划分的位置数据转换为基准值， 数据表示相互重叠的范围共有的范围，每个数据由对应于通过定时脉冲的上升沿和下降沿的一对位置数据表示为分量颜色的标记图像的读取位置数据，并且计算 基于此，分量彩色图像彼此的位置偏差 提取位置数据。

公开(公告)号：US06725005B2

公开(公告)日：2004-04-20

申请号：US10267621

申请日：2002-10-09

申请人： Tadayuki Ueda ,  Hiroyuki Maruyama ,  Kenji Izumiya ,  Ryuji Okutomi ,  Shinobu Kishi ,  Satoshi Ogata ,  Eiji Nishikawa ,  Jun Onishi

发明人： Tadayuki Ueda ,  Hiroyuki Maruyama ,  Kenji Izumiya ,  Ryuji Okutomi ,  Shinobu Kishi ,  Satoshi Ogata ,  Eiji Nishikawa ,  Jun Onishi

IPC分类号： G03G1500

CPC分类号： G03G15/757 ,  G03G15/5008 ,  G03G2215/0119

摘要： There is described a method of controlling the rotational peripheral speed of the rotating photoreceptor drum to make it constant. The method includes the steps of: detecting angular velocity signals by means of angular velocity detecting device disposed on an axis of the photoreceptor drum; finding deviations from a reference angular velocity, based on the angular velocity signals; storing a profile of the deviations within a one-revolution of the photoreceptor drum in a storage section, while revising the profile in real-time base; applying an arithmetic processing to an angular velocity signal detected at a current rotational-position of the photoreceptor drum by referring data included in the profile obtained in a preceding one-revolution of the photoreceptor drum; and controlling the motor, based on results of the arithmetic processing for the angular velocity signals, so as to compress the deviations from the reference angular velocity as small as possible.

摘要翻译： 描述了一种控制旋转感光鼓的旋转圆周速度以使其恒定的方法。 该方法包括以下步骤：通过设置在感光鼓的轴上的角速度检测装置检测角速度信号; 基于角速度信号发现与参考角速度的偏差; 将感光鼓的一圈内的偏差轮廓存储在存储部分中，同时实时修改轮廓; 通过参考在感光鼓的前一转中获得的轮廓中包含的数据，对感光鼓的当前旋转位置检测到的角速度信号应用运算处理; 并且基于角速度信号的运算处理的结果来控制马达，以便尽可能地减小参考角速度的偏差。

公开(公告)号：US20090269089A1

公开(公告)日：2009-10-29

申请号：US12211632

申请日：2008-09-16

申请人： Eiji NISHIKAWA ,  Hiroyuki Maruyama ,  Hiroyuki Arai ,  Toshihiro Motoi ,  Kenji Izumiya ,  Ryuji Okutomi ,  Shinobu Kishi ,  Satoshi Ogata ,  Kenichi Ozawa ,  Tadayuki Ueda ,  Yumiko Higashi

发明人： Eiji NISHIKAWA ,  Hiroyuki Maruyama ,  Hiroyuki Arai ,  Toshihiro Motoi ,  Kenji Izumiya ,  Ryuji Okutomi ,  Shinobu Kishi ,  Satoshi Ogata ,  Kenichi Ozawa ,  Tadayuki Ueda ,  Yumiko Higashi

IPC分类号： G03G15/01

CPC分类号： B41J29/393 ,  G03G15/0194 ,  G03G2215/0119 ,  G03G2215/0161 ,  G06K15/129 ,  H04N1/506

摘要： In an image forming apparatus for forming a color image by superposing component color images, a control device obtains position data representing a forming position of each of plural registration mark images for the component color images with respect to a positional reference value arbitrarily determined, divides the position data into each of a unit reference range representing a range in which one mark image is formed, converts the position data divided for each unit reference range into those based on respective reference values representing the front edge of the unit reference ranges, extracts the position data representing ranges common to the mutually overlapping ranges each of which is represented by a couple of position data corresponding to the rising and falling edges of a passage timing pulse as read position data of the mark image of the component color, and calculates the amounts of positional deviations of the component color images from one another on the basis of the position data extracted.

摘要翻译： 在通过叠加分量彩色图像来形成彩色图像的图像形成装置中，控制装置获取表示相对于任意确定的位置基准值的分量彩色图像的多个对准标记图像中的每一个的形成位置的位置数据， 将位置数据分配到表示形成一个标记图像的范围的单位基准范围的每一个中，根据表示单位基准范围的前沿的各个基准值，将每个单位基准范围划分的位置数据转换为基准值， 数据表示相互重叠的范围共有的范围，每个数据由对应于通过定时脉冲的上升沿和下降沿的一对位置数据表示为分量颜色的标记图像的读取位置数据，并且计算 基于此，分量彩色图像彼此的位置偏差 提取位置数据。

公开(公告)号：US07542058B2

公开(公告)日：2009-06-02

申请号：US11126129

申请日：2005-05-10

申请人： Eiji Nishikawa ,  Hiroyuki Maruyama ,  Hiroyuki Arai ,  Toshihiro Motoi ,  Kenji Izumiya ,  Ryuji Okutomi ,  Shinobu Kishi ,  Satoshi Ogata ,  Kenichi Ozawa ,  Tadayuki Ueda ,  Yumiko Higashi

发明人： Eiji Nishikawa ,  Hiroyuki Maruyama ,  Hiroyuki Arai ,  Toshihiro Motoi ,  Kenji Izumiya ,  Ryuji Okutomi ,  Shinobu Kishi ,  Satoshi Ogata ,  Kenichi Ozawa ,  Tadayuki Ueda ,  Yumiko Higashi

IPC分类号： G03G15/01

CPC分类号： B41J29/393 ,  G03G15/0194 ,  G03G2215/0119 ,  G03G2215/0161 ,  G06K15/129 ,  H04N1/506

摘要： In an image forming apparatus for forming a color image by superposing component color images, a control device obtains position data representing a forming position of each of plural registration mark images for the component color images with respect to a positional reference value arbitrarily determined, divides the position data into each of a unit reference range representing a range in which one mark image is formed, converts the position data divided for each unit reference range into those based on respective reference values representing the front edge of the unit reference ranges, extracts the position data representing ranges common to the mutually overlapping ranges each of which is representing by a couple of position data corresponding to the rising and falling edges of a passage timing pulse as read position data of the mark image of the component color, and calculates the amounts of positional deviations of the component color images from one another on the basis of the position data extracted.

摘要翻译： 在通过叠加分量彩色图像形成彩色图像的图像形成装置中，控制装置获取表示相对于任意确定的位置基准值的分量彩色图像的多个对准标记图像中的每一个的形成位置的位置数据， 将位置数据分配到表示形成一个标记图像的范围的单位基准范围的每一个中，根据表示单位基准范围的前沿的各个基准值，将每个单位基准范围划分的位置数据转换为基准值， 数据表示相互重叠的范围共同的范围，每个范围通过对应于通过定时脉冲的上升沿和下降沿的一对位置数据表示为分量颜色的标记图像的读取位置数据，并且计算 基于此，分量彩色图像彼此的位置偏差 提取位置数据。

公开(公告)号：US20060153603A1

公开(公告)日：2006-07-13

申请号：US11234109

申请日：2005-09-26

申请人： Eiji Nishikawa ,  Ryuji Okutomi ,  Satoshi Ogata ,  Tadayuki Ueda

发明人： Eiji Nishikawa ,  Ryuji Okutomi ,  Satoshi Ogata ,  Tadayuki Ueda

IPC分类号： G03G15/01

CPC分类号： G03G15/0194 ,  G03G2215/0119 ,  G03G2215/0158

摘要： When conducting a color-shift-correcting mode using a registration mark formed by the image forming means on an image carrier, the image detecting means outputs the image detection signal representing the line width of the registration mark and the control section calculates the line width of the registration from the image detection signal. The control means compares a line width of the registration mark with a predetermined reference value of the line width to discriminate between abnormality and normality. If normality, the control means continues the color-shift-correcting mode and if abnormality the control means conducts the image forming system restoration mode after stopping the execution of the color-shift-correcting mode. Therefore, even in the case where a white spot is generated for some reasons on the registration mark, the color-shift-correcting mode can be conducted on the normal registration mark with the help of the image forming system restoration mode.

摘要翻译： 当在图像载体上使用由图像形成装置形成的对准标记进行颜色偏移校正模式时，图像检测装置输出表示对准标记的线宽的图像检测信号，并且控制部分计算线宽 从图像检测信号进行注册。 控制装置将对准标记的线宽与线宽的预定参考值进行比较，以区分异常和正常。 如果正常，控制装置继续色移校正模式，并且如果异常，则控制装置在停止执行色移校正模式之后进行图像形成系统恢复模式。 因此，即使在由于某种原因在对准标记上产生白点的情况下，也可借助于图像形成系统恢复模式在正常对准标记上进行色移校正模式。

公开(公告)号：US20050206980A1

公开(公告)日：2005-09-22

申请号：US11126128

申请日：2005-05-10

申请人： Eiji Nishikawa ,  Hiroyuki Maruyama ,  Hiroyuki Arai ,  Toshihiro Motoi ,  Kenji Izumiya ,  Ryuji Okutomi ,  Shinobu Kishi ,  Satoshi Ogata ,  Kenichi Ozawa ,  Tadayuki Ueda ,  Yumiko Higashi

发明人： Eiji Nishikawa ,  Hiroyuki Maruyama ,  Hiroyuki Arai ,  Toshihiro Motoi ,  Kenji Izumiya ,  Ryuji Okutomi ,  Shinobu Kishi ,  Satoshi Ogata ,  Kenichi Ozawa ,  Tadayuki Ueda ,  Yumiko Higashi

IPC分类号： B41J29/393 ,  G03F3/08 ,  G03G15/01 ,  G06F15/00 ,  G06K15/12 ,  H04N1/50

CPC分类号： B41J29/393 ,  G03G15/0194 ,  G03G2215/0119 ,  G03G2215/0161 ,  G06K15/129 ,  H04N1/506

摘要： In an image forming apparatus for forming a color image by superposing component color images, a control device obtains position data representing a forming position of each of plural registration mark images for the component color images with respect to a positional reference value arbitrarily determined, divides the position data into each of a unit reference range representing a range in which one mark image is formed, converts the position data divided for each unit reference range into those based on respective reference values representing the front edge of the unit reference ranges, extracts the position data representing ranges common to the mutually overlapping ranges each of which is represented by a couple of position data corresponding to the rising and falling edges of a passage timing pulse as read position data of the mark image of the component color, and calculates the amounts of positional deviations of the component color images from one another on the basis of the position data extracted.

公开(公告)号：US06801725B2

公开(公告)日：2004-10-05

申请号：US10434132

申请日：2003-05-08

申请人： Tadayuki Ueda ,  Toshihiro Motoi ,  Satoshi Ogata ,  Ryuji Okutomi ,  Shinobu Kishi ,  Eiji Nishikawa ,  Kenji Izumiya ,  Yumiko Higashi ,  Hiroyuki Maruyama

发明人： Tadayuki Ueda ,  Toshihiro Motoi ,  Satoshi Ogata ,  Ryuji Okutomi ,  Shinobu Kishi ,  Eiji Nishikawa ,  Kenji Izumiya ,  Yumiko Higashi ,  Hiroyuki Maruyama

IPC分类号： G03G1500

CPC分类号： G03G15/5008 ,  G03G2215/0119

摘要： An image forming apparatus includes: a photosensitive member; an intermediate transferring member to which an image formed on the photosensitive member is transferred; a press/release operation controlling section for controlling a pressing of the intermediate transferring member to the photosensitive member and for controlling a release of the pressing; a rotational actuation controlling section for controlling a rotational actuation of the photosensitive member; a judging section for judging a finish of a pressing operation carried out by the press/release operation controlling section; and a start timing controlling section for starting a control for the rotational actuation of the photosensitive member when the judging section judges the finish of the pressing operation by the rotational actuation controlling section.

摘要翻译： 图像形成装置包括：感光构件; 传送形成在感光构件上的图像的中间转印构件; 压力/释放操作控制部分，用于控制中间转印部件到感光部件的按压并用于控制按压的释放; 用于控制感光构件的旋转致动的旋转致动控制部分; 判断部分，用于判断由所述按压/释放操作控制部分执行的按压操作的完成; 以及开始正时控制部分，用于当所述判断部分判断所述旋转致动控制部分的按压操作结束时，开始对所述感光部件的旋转动作的控制。