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1. 发明授权

US10012925B2 Image forming apparatus and image forming method 有权
公开(公告)号：US10012925B2
公开(公告)日：2018-07-03
申请号：US15600385
申请日：2017-05-19
申请人： Tatsuya Miyadera , Muneaki Iwata , Hayato Fujita
发明人： Tatsuya Miyadera , Muneaki Iwata , Hayato Fujita
IPC分类号： G06F15/00 , G03G15/043 , G03G15/04 , H04N1/40 , G06K15/02 , G06K15/12
CPC分类号： G03G15/043 , G03G15/04045 , G06K15/12 , G06K15/1873 , H04N1/40056 , H04N1/40068
摘要： An image forming apparatus includes a photoconductor, a light source, and circuitry that receives: first image data including first pixels each indicating image density or one of turning on and off the light source; and tag data indicating an attribute of each first pixels. The circuitry sets specific data to identify a first target pixel subjected to change out of the first pixels, converts the first image data into second image data having a higher resolution than that of the first image data, and controls the light source according to the second image data to form an image. In conversion, the circuitry identifies a second target pixel corresponding to the first target pixel out of second pixels of the second image data according to the specific data and the tag data, and changes the second target pixel into a pixel to turn on the light source.

2. 发明申请

US20170343920A1 IMAGE FORMING APPARATUS AND IMAGE FORMING METHOD 有权
公开(公告)号：US20170343920A1
公开(公告)日：2017-11-30
申请号：US15600385
申请日：2017-05-19
申请人： Tatsuya Miyadera , Muneaki Iwata , Hayato Fujita
发明人： Tatsuya Miyadera , Muneaki Iwata , Hayato Fujita
IPC分类号： G03G15/043 , G03G15/04 , G06K15/12 , H04N1/40
CPC分类号： G03G15/043 , G03G15/04045 , G06K15/12 , G06K15/1873 , H04N1/40056 , H04N1/40068
摘要： An image forming apparatus includes a photoconductor, a light source, and circuitry that receives: first image data including first pixels each indicating image density or one of turning on and off the light source; and tag data indicating an attribute of each first pixels. The circuitry sets specific data to identify a first target pixel subjected to change out of the first pixels, converts the first image data into second image data having a higher resolution than that of the first image data, and controls the light source according to the second image data to form an image. In conversion, the circuitry identifies a second target pixel corresponding to the first target pixel out of second pixels of the second image data according to the specific data and the tag data, and changes the second target pixel into a pixel to turn on the light source.

3. 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.

4. 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。

5. 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。

6. 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。

7. 发明授权

US08928715B2 Light source driver, light source-driving method, image-forming apparatus, light source-driving circuit, and optical scanner 有权
标题翻译：光源驱动器，光源驱动方法，图像形成装置，光源驱动电路和光学扫描器
公开(公告)号：US08928715B2
公开(公告)日：2015-01-06
申请号：US14140147
申请日：2013-12-24
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： B41J2/47 , B41J2/385 , B41J2/435 , H05B37/02 , G02B26/10 , G03G15/04
CPC分类号： H05B37/0281 , G03G15/04036 , G03G15/04072 , G03G2215/0132 , H05B33/0803
摘要： A light source driver includes a controller which outputs an undershoot current in synchronization with lighting complete timing in lighting information, wherein the controller is configured to output the undershoot current such that a voltage in a light source when the output of the undershoot current is complete is equal to a voltage in the light source before being turned on.
摘要翻译：光源驱动器包括控制器，其与照明信息中的点亮完成定时同步地输出下冲电流，其中，所述控制器被配置为输出下冲电流，使得当下冲电流的输出完成时光源中的电压为在开启前等于光源中的电压。

8. 发明授权

US09760813B2 Image forming apparatus 有权
公开(公告)号：US09760813B2
公开(公告)日：2017-09-12
申请号：US14802686
申请日：2015-07-17
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： G06K15/02 , G06K15/14 , B41J2/44 , H04N1/113 , H04N1/409 , H04N1/40
CPC分类号： G06K15/1843 , B41J2/442 , G06K15/14 , G06K15/1873 , H04N1/113 , H04N1/40068 , H04N1/409 , H04N1/4092
摘要： An image forming apparatus that forms an image according to light emitted from a light source is provided. The image forming apparatus includes: a first image processor that performs image processing on image data having a first resolution and outputs the resulting image data; a resolution converter that acquires the image data having the first resolution output from the first image processor and converts the image data to image data having a second resolution that is higher than the first resolution; a modulation signal generator that modulates the image data having the second resolution according to a clock signal to thereby generate a modulation signal; a light source driver that drives the light source according to the modulation signal; and a second image processor that performs image processing on the image data having the second resolution to be modulated to the modulation signal.

9. 发明授权

US09703244B2 Image forming apparatus to correct a driving signal for driving a light source 有权
公开(公告)号：US09703244B2
公开(公告)日：2017-07-11
申请号：US15067660
申请日：2016-03-11
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： G03G15/00 , G03G15/043 , G03G15/04
CPC分类号： G03G15/5041 , G03G15/04072 , G03G15/043 , G03G15/5054 , G03G2215/0132 , G03G2215/0164
摘要： An image forming apparatus includes: a photoconductor drum; an optical scanning device that drives a light source to scan a surface of the photoconductor drum and form a latent image on the surface; a developing device that develops the latent image; and a density detector to detect density variation of an image in a rotation direction of the photoconductor drum, the image being developed by the developing device. The optical scanning device includes a processing device that is capable of correcting a driving signal for driving the light source on a basis of an output signal of the density detector to adjust at least either one of a correction period and a correction strength of correction data for the driving signal for a rotation period of the photoconductor drum.

10. 发明授权

US09111203B2 Image forming apparatus 有权
标题翻译：图像形成装置
公开(公告)号：US09111203B2
公开(公告)日：2015-08-18
申请号：US14193271
申请日：2014-02-28
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： G06K15/02 , H04N1/40 , H04N1/60 , G06K15/14 , H04N1/113 , H04N1/409
CPC分类号： G06K15/1843 , B41J2/442 , G06K15/14 , G06K15/1873 , H04N1/113 , H04N1/40068 , H04N1/409 , H04N1/4092
摘要： An image forming apparatus that forms an image according to light emitted from a light source is provided. The image forming apparatus includes: a first image processor that performs image processing on image data having a first resolution and outputs the resulting image data; a resolution converter that acquires the image data having the first resolution output from the first image processor and converts the image data to image data having a second resolution that is higher than the first resolution; a modulation signal generator that modulates the image data having the second resolution according to a clock signal to thereby generate a modulation signal; a light source driver that drives the light source according to the modulation signal; and a second image processor that performs image processing on the image data having the second resolution to be modulated to the modulation signal.
摘要翻译：提供了一种根据从光源发出的光形成图像的图像形成装置。图像形成装置包括：第一图像处理器，对具有第一分辨率的图像数据进行图像处理，并输出所得到的图像数据; 分辨率转换器，其获取具有从所述第一图像处理器输出的所述第一分辨率的图像数据，并将所述图像数据转换为具有高于所述第一分辨率的第二分辨率的图像数据; 调制信号发生器，根据时钟信号调制具有第二分辨率的图像数据，从而生成调制信号; 光源驱动器，其根据调制信号驱动光源; 以及对具有要调制到调制信号的第二分辨率的图像数据执行图像处理的第二图像处理器。

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