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1. 发明申请

US20120189328A1 IMAGE FORMING APPARATUS 有权
标题翻译：图像形成装置
公开(公告)号：US20120189328A1
公开(公告)日：2012-07-26
申请号：US13354789
申请日：2012-01-20
申请人： Seizo Suzuki , Masaaki Ishida , Atsufumi Omori , Kazuhiro Akatsu , Muneaki Iwata , Hayato Fujita
发明人： Seizo Suzuki , Masaaki Ishida , Atsufumi Omori , Kazuhiro Akatsu , Muneaki Iwata , Hayato Fujita
IPC分类号： G03G15/04
CPC分类号： G03G15/043 , G03G15/0189 , G03G15/5058
摘要： Apparatus that forms an image according to image information includes density sensors that detect image density variations in main and sub-scanning directions. A processing device generates correction data for correcting a light source output to suppress the density variations based on detection results. The processing device modifies the correction data such that the light source output after the correction is at least a minimum rated output at a position at which the output after the correction is lower than the minimum rated output, in the relation between a position on the surface of the photosensitive element in the main-scanning direction and the output after the correction, and modifies the correction data such that the light source output after the correction is at most a maximum rated output at a position at which the output after the correction is higher than the maximum rated output.
摘要翻译：根据图像信息形成图像的装置包括检测主扫描方向和副扫描方向上的图像浓度变化的密度传感器。处理装置产生用于校正光源输出的校正数据，以根据检测结果抑制密度变化。处理装置修正校正数据，使得校正后的光源输出在校正后的输出低于最小额定输出的位置处至少为最小额定输出，表面上的位置之间的关系的主扫描方向上的感光元件和校正后的输出，并且修正校正数据，使得校正后的光源输出在校正后的输出更高的位置处于最大额定输出超过最大额定输出。

2. 发明授权

US08648892B2 Image forming apparatus to detect and correct density variations in a developed image 有权
标题翻译：用于检测和校正显影图像中的密度变化的图像形成装置
公开(公告)号：US08648892B2
公开(公告)日：2014-02-11
申请号：US13354789
申请日：2012-01-20
申请人： Seizo Suzuki , Masaaki Ishida , Atsufumi Omori , Kazuhiro Akatsu , Muneaki Iwata , Hayato Fujita
发明人： Seizo Suzuki , Masaaki Ishida , Atsufumi Omori , Kazuhiro Akatsu , Muneaki Iwata , Hayato Fujita
IPC分类号： B41J2/435 , G03G15/04
CPC分类号： G03G15/043 , G03G15/0189 , G03G15/5058
摘要： Apparatus that forms an image according to image information includes density sensors that detect image density variations in main and sub-scanning directions. A processing device generates correction data for correcting a light source output to suppress the density variations based on detection results. The processing device modifies the correction data such that the light source output after the correction is at least a minimum rated output at a position at which the output after the correction is lower than the minimum rated output, in the relation between a position on the surface of the photosensitive element in the main-scanning direction and the output after the correction, and modifies the correction data such that the light source output after the correction is at most a maximum rated output at a position at which the output after the correction is higher than the maximum rated output.
摘要翻译：根据图像信息形成图像的装置包括检测主扫描方向和副扫描方向上的图像浓度变化的密度传感器。处理装置产生用于校正光源输出的校正数据，以根据检测结果抑制密度变化。处理装置修正校正数据，使得校正后的光源输出在校正后的输出低于最小额定输出的位置处至少为最小额定输出，表面上的位置之间的关系的主扫描方向上的感光元件和校正后的输出，并且修正校正数据，使得校正后的光源输出在校正后的输出更高的位置处于最大额定输出超过最大额定输出。

3. 发明申请

US20130243459A1 IMAGE FORMING APPARATUS 有权
标题翻译：图像形成装置
公开(公告)号：US20130243459A1
公开(公告)日：2013-09-19
申请号：US13843147
申请日：2013-03-15
申请人： Atsufumi OMORI , Masaaki Ishida , Kazuhiro Akatsu , Muneaki Iwata , Hayato Fujita
发明人： Atsufumi OMORI , Masaaki Ishida , Kazuhiro Akatsu , Muneaki Iwata , Hayato Fujita
IPC分类号： G03G15/00
CPC分类号： G03G15/556 , G03G15/5058
摘要： An image forming apparatus is disclosed, including a light source; a drum; an optical scanning apparatus; and an endless belt. The image forming apparatus further includes a pattern forming unit which forms, on the endless belt along a conveying direction of the endless belt, a density fluctuation detecting pattern having a period; a density sensor which detects the density fluctuating detecting pattern and outputs a density signal including information on density fluctuations in the conveying direction of the endless belt; and a period detecting sensor which detects the period included in the density fluctuations.
摘要翻译：公开了一种图像形成装置，包括光源; 鼓光学扫描装置; 和无尽的皮带。图像形成装置还包括图案形成单元，其沿环形带的输送方向在环形带上形成具有周期的浓度波动检测图案; 密度传感器，其检测所述浓度波动检测图案，并输出密度信号，所述浓度信号包括关于环形带的传送方向上的密度波动的信息; 以及周期检测传感器，其检测包含在密度波动中的周期。

4. 发明申请

US20130302052A1 IMAGE FORMING APPARATUS AND DENSITY CHANGE SUPPRESSING METHOD 有权
标题翻译：图像形成装置和密度变化抑制方法
公开(公告)号：US20130302052A1
公开(公告)日：2013-11-14
申请号：US13889781
申请日：2013-05-08
申请人： Muneaki IWATA , Kazuhiro Akatsu , Masaaki Ishida , Atsufumi Omori , Hayato Fujita
发明人： Muneaki IWATA , Kazuhiro Akatsu , Masaaki Ishida , Atsufumi Omori , Hayato Fujita
IPC分类号： G03G15/00
CPC分类号： G03G13/04 , G03G15/043 , G03G15/5041 , G03G15/5054 , G03G15/55
摘要： An image forming apparatus includes: a density detection unit that detects densities of an image developed by a developing unit at a plurality of positions in a main-scanning direction; a processing unit that obtains at least one of an amplitude and a phase of a first periodical density change of the image, of which cycle is a rotation cycle of a photosensitive drum, at the plurality of positions in the main-scanning direction on the basis of an output signal of the density detection unit, and corrects a drive signal for the light source so as to suppress the first periodical density change of the image at each position in the main-scanning direction on the basis of the rotation cycle of the photosensitive drum and at least one of the amplitude and the phase.
摘要翻译：图像形成装置包括：浓度检测单元，其检测由主扫描方向上的多个位置处的显影单元显影的图像的浓度; 处理单元，其基于在主扫描方向上的多个位置处获取图像的第一周期性密度变化的幅度和相位中的至少一个，哪个周期是感光鼓的旋转周期并且校正用于光源的驱动信号，以便基于感光体的旋转周期来抑制主扫描方向上每个位置处的图像的第一周期性密度变化鼓和振幅和相位中的至少一个。

5. 发明授权

US08983318B2 Image forming apparatus with a density sensor for detecting density fluctuations 有权
标题翻译：具有用于检测浓度波动的密度传感器的图像形成装置
公开(公告)号：US08983318B2
公开(公告)日：2015-03-17
申请号：US13843147
申请日：2013-03-15
申请人： Atsufumi Omori , Masaaki Ishida , Kazuhiro Akatsu , Muneaki Iwata , Hayato Fujita
发明人： Atsufumi Omori , Masaaki Ishida , Kazuhiro Akatsu , Muneaki Iwata , Hayato Fujita
IPC分类号： G03G15/00
CPC分类号： G03G15/556 , G03G15/5058
摘要： An image forming apparatus is disclosed, including a light source; a drum; an optical scanning apparatus; and an endless belt. The image forming apparatus further includes a pattern forming unit which forms, on the endless belt along a conveying direction of the endless belt, a density fluctuation detecting pattern having a period; a density sensor which detects the density fluctuating detecting pattern and outputs a density signal including information on density fluctuations in the conveying direction of the endless belt; and a period detecting sensor which detects the period included in the density fluctuations.
摘要翻译：公开了一种图像形成装置，包括光源; 鼓光学扫描装置; 和无尽的皮带。图像形成装置还包括图案形成单元，其沿环形带的输送方向在环形带上形成具有周期的浓度波动检测图案; 密度传感器，其检测所述浓度波动检测图案，并输出密度信号，所述浓度信号包括关于环形带的传送方向上的密度波动的信息; 以及周期检测传感器，其检测包含在密度波动中的周期。

6. 发明授权

US08929759B2 Image forming apparatus and density change suppressing method 有权
标题翻译：图像形成装置和密度变化抑制方法
公开(公告)号：US08929759B2
公开(公告)日：2015-01-06
申请号：US13889781
申请日：2013-05-08
申请人： Muneaki Iwata , Kazuhiro Akatsu , Masaaki Ishida , Atsufumi Omori , Hayato Fujita
发明人： Muneaki Iwata , Kazuhiro Akatsu , Masaaki Ishida , Atsufumi Omori , Hayato Fujita
IPC分类号： G03G15/00 , G03G13/04 , G03G15/043
CPC分类号： G03G13/04 , G03G15/043 , G03G15/5041 , G03G15/5054 , G03G15/55
摘要： An image forming apparatus includes: a density detection unit that detects densities of an image developed by a developing unit at a plurality of positions in a main-scanning direction; a processing unit that obtains at least one of an amplitude and a phase of a first periodical density change of the image, of which cycle is a rotation cycle of a photosensitive drum, at the plurality of positions in the main-scanning direction on the basis of an output signal of the density detection unit, and corrects a drive signal for the light source so as to suppress the first periodical density change of the image at each position in the main-scanning direction on the basis of the rotation cycle of the photosensitive drum and at least one of the amplitude and the phase.
摘要翻译：图像形成装置包括：浓度检测单元，其检测由主扫描方向上的多个位置处的显影单元显影的图像的浓度; 处理单元，其基于在主扫描方向上的多个位置处获取图像的第一周期性密度变化的幅度和相位中的至少一个，哪个周期是感光鼓的旋转周期并且校正用于光源的驱动信号，以便基于感光体的旋转周期来抑制主扫描方向上每个位置处的图像的第一周期性密度变化鼓和振幅和相位中的至少一个。

7. 发明授权

US09961227B2 Light source drive control device, image forming apparatus, light source drive control method, and computer program product 有权
公开(公告)号：US09961227B2
公开(公告)日：2018-05-01
申请号：US15015364
申请日：2016-02-04
申请人： Atsufumi Omori , Masaaki Ishida , Muneaki Iwata , Hayato Fujita
发明人： Atsufumi Omori , Masaaki Ishida , Muneaki Iwata , Hayato Fujita
IPC分类号： G06F15/00 , H04N1/04 , H04N1/00 , H04N1/409 , H04N1/40
CPC分类号： H04N1/0446 , H04N1/00822 , H04N1/0408 , H04N1/40037 , H04N1/40068 , H04N1/4092
摘要： A light source drive control device includes: an image data generating part that generates line-thinned image data having been subjected to line thinning processing for thinning an edge pixel in image data by a first pixel width; an intensity information generating part that generates intensity information including a first intensity at which a pixel not included in a set second pixel width of an edge in the line-thinned image data is exposed and a second intensity at which a pixel included in the second pixel width is exposed and which is higher than the first intensity; and a light source driving part that drives a light source based on a light source modulation signal generated according to the line-thinned image data and a drive current data switched based on a drive current switching signal generated based on the intensity information.

8. 发明授权

US09466016B2 Image forming apparatus which forms image data indicating whether a pixel is for a character or line 有权
标题翻译：图像形成装置，其形成指示像素是针对字符还是线的图像数据
公开(公告)号：US09466016B2
公开(公告)日：2016-10-11
申请号：US14796385
申请日：2015-07-10
申请人： Muneaki Iwata , Masaaki Ishida , Atsufumi Omori , Naoto Watanabe , Hayato Fujita
发明人： Muneaki Iwata , Masaaki Ishida , Atsufumi Omori , Naoto Watanabe , Hayato Fujita
IPC分类号： G06F15/00 , G06K1/00 , G06K15/02 , G06K15/14 , G06F3/12 , G06K15/00
CPC分类号： G06K15/1874 , G06F3/1208 , G06F3/122 , G06K15/14 , G06K15/1822 , G06K15/4055 , H04N1/40062 , H04N1/40068
摘要： An apparatus includes an image-processing-unit that generates tag information indicating whether each of pixels of a first-resolution image data is a pixel of a character or a line, a resolution-converting-unit that converts the first-resolution image data to image data with a second resolution higher than the first resolution, and a light-source-driving-unit that drives light-source according to the second-resolution image data. The resolution-converting-unit includes an image-matrix-acquiring-unit that acquires an image matrix being image data and tag information with the first resolution in an area containing a target-pixel and pixels around the target-pixel, a pattern-matching-unit that determines whether the target-pixel is a pixel of an edge of a character or a line based on the image matrix, and a first-converting-unit that, when the pixel is the edge pixel, converts the image data to image data with the second resolution of a pattern determined in accordance with a layout of the target-pixel.
摘要翻译：一种装置，包括：图像处理单元，生成指示第一分辨率图像数据的每个像素是字符或行的像素的标签信息;将第一分辨率图像数据转换为具有比第一分辨率高的第二分辨率的图像数据，以及根据第二分辨率图像数据驱动光源的光源驱动单元。分辨率转换单元包括图像矩阵获取单元，其在包含目标像素和目标像素周围的像素的区域中获取作为图像数据的图像矩阵和具有第一分辨率的标签信息，模式匹配 - 基于图像矩阵确定目标像素是字符边缘还是直线的像素的单位，以及当像素为边缘像素时，将图像数据转换为图像的第一转换单元具有根据目标像素的布局确定的图案的第二分辨率的数据。

9. 发明授权

US09298122B2 Image forming apparatus, image forming method, and method of producing printed material for generating a parallel line pattern of uniform concentration 有权
标题翻译：图像形成装置，图像形成方法以及用于产生均匀浓度的平行线图案的印刷材料的制造方法
公开(公告)号：US09298122B2
公开(公告)日：2016-03-29
申请号：US14268463
申请日：2014-05-02
申请人： Muneaki Iwata , Masaaki Ishida , Atsufumi Omori , Hayato Fujita
发明人： Muneaki Iwata , Masaaki Ishida , Atsufumi Omori , Hayato Fujita
IPC分类号： G06K15/00 , H04N1/40 , G03G15/043 , H04N1/405 , H04N1/409 , G03G15/04
CPC分类号： G03G15/043 , G03G15/04027 , H04N1/40068 , H04N1/4058 , H04N1/4092
摘要： An image forming apparatus includes: a pseudo-halftone processing unit that processes input image data to output image data of first resolution; a resolution converting unit that converts the image data of the first resolution into image data of second resolution that is higher than the first resolution; a modulation-signal generating unit that generates a modulation signal obtained by modulating the image data of the second resolution according to a clock signal; and a light-source driving unit that drives a light source according to the modulation signal. The pseudo-halftone processing unit converts a region of pixels having the same pixel value into a parallel line pattern that is formed with a plurality of parallel lines oblique relative to a direction of arrangement of pixels. The resolution converting unit generates the image data o in which each edge of the lines forming the parallel line pattern is smoothed.
摘要翻译：一种图像形成装置包括：伪半色调处理单元，其处理输入图像数据以输出第一分辨率的图像数据; 分辨率转换单元，其将第一分辨率的图像数据转换成高于第一分辨率的第二分辨率的图像数据; 调制信号生成单元，其生成通过根据时钟信号调制所述第二分辨率的图像数据而获得的调制信号; 以及根据调制信号驱动光源的光源驱动单元。伪半色调处理单元将具有相同像素值的像素的区域转换为平行线图案，该平行线图案形成有相对于像素排列方向倾斜的多条平行线。分辨率转换单元生成图像数据o，其中形成平行线图案的线的每个边缘被平滑化。

10. 发明授权

US08957934B2 Light source drive circuit, optical scanning apparatus, semiconductor drive circuit, and image forming apparatus 有权
标题翻译：光源驱动电路，光扫描装置，半导体驱动电路和图像形成装置
公开(公告)号：US08957934B2
公开(公告)日：2015-02-17
申请号：US14072946
申请日：2013-11-06
申请人： Hayato Fujita , Atsufumi Omori , Muneaki Iwata , Masaaki Ishida
发明人： Hayato Fujita , Atsufumi Omori , Muneaki Iwata , Masaaki Ishida
IPC分类号： B41J2/435 , B41J2/47 , H01S5/06 , H05B37/02 , H01S5/042 , G06K15/12 , H01S5/068
CPC分类号： H01S5/0425 , B41J2/435 , B41J2/455 , B41J2/471 , G06K15/1209 , H01S5/0261 , H01S5/0427 , H01S5/06 , H01S5/068 , H01S5/183 , H05B37/02 , Y02B20/202
摘要： A light source drive circuit which drives a light source is disclosed, including a drive current generating unit which generates a drive current, the driving current including a predetermined current for obtaining a predetermined light amount from the light source; and first and second overshoot currents which are applied to the predetermined current in synchronization thereto; and a control unit which sets, to the drive current generating unit, a value of the first overshoot current to a fixed value, and a value of the second overshoot current in accordance with a light amount output from the light source.
摘要翻译：公开了一种驱动光源的光源驱动电路，包括产生驱动电流的驱动电流产生单元，包括用于从光源获得预定光量的预定电流的驱动电流; 以及与其同步地施加到预定电流的第一和第二过冲电流; 以及控制单元，其根据从光源输出的光量将驱动电流产生单元的第一过冲电流的值设定为固定值，以及第二过冲电流的值。

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