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    Image forming apparatus which forms image data indicating whether a pixel is for a character or line
    2.
    发明授权
    Image forming apparatus which forms image data indicating whether a pixel is for a character or line 有权
    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。

    Image forming apparatus, image forming method, and method of producing printed material for generating a parallel line pattern of uniform concentration
    3.
    发明授权
    Image forming apparatus, image forming method, and method of producing printed material for generating a parallel line pattern of uniform concentration 有权
    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。

    Image forming apparatus and image forming method to form an image by scanning an image bearer with light modulated based on image information
    7.
    发明授权
    Image forming apparatus and image forming method to form an image by scanning an image bearer with light modulated based on image information 有权
    图像形成装置和图像形成方法，用于通过基于图像信息调制的光扫描图像载体来形成图像

    公开(公告)号：US09527303B2

    公开(公告)日：2016-12-27

    申请号：US14585383

    申请日：2014-12-30

    申请人： Masaaki Ishida ,  Atsufumi Omori ,  Muneaki Iwata ,  Hayato Fujita

    发明人： Masaaki Ishida ,  Atsufumi Omori ,  Muneaki Iwata ,  Hayato Fujita

    IPC分类号： B41J2/47

    CPC分类号： B41J2/471 ,  B41J2/47 ,  B41J2/473

    摘要： An image forming apparatus includes a drive signal generating unit that generates a drive signal for driving a light source based on a reference pulse signal serving as a reference to form a plurality of pixels arranged in the main-scanning direction of an image, and the drive signal generating unit generates the drive signal by adjusting the pulse width of the reference pulse signal so that the amplitude of portions of the reference pulse signal with the adjusted pulse width corresponding to specific pixels among the pixels is larger than the amplitude of portions corresponding to normal pixels that are pixels other than the specific pixels among the pixels, and so that the pulse width of the portions of the reference pulse signal with the adjusted pulse width corresponding to the specific pixels is smaller than the pulse width of the portions corresponding to the normal pixels.

    摘要翻译： 一种图像形成装置，包括：驱动信号生成单元，其基于用作基准的基准脉冲信号生成用于驱动光源的驱动信号，以形成沿图像的主扫描方向布置的多个像素;驱动信号生成单元， 信号产生单元通过调整参考脉冲信号的脉冲宽度来产生驱动信号，使得具有与像素中的特定像素对应的调整脉冲宽度的参考脉冲信号的部分的幅度大于对应于正常的部分的振幅 像素之间的像素除了像素之间的特定像素之外的像素，并且具有对应于特定像素的调整脉冲宽度的参考脉冲信号的部分的脉冲宽度小于对应于正常的部分的脉冲宽度 像素。

    IMAGE FORMING APPARATUS AND DENSITY CHANGE SUPPRESSING METHOD
    8.
    发明申请
    IMAGE FORMING APPARATUS AND DENSITY CHANGE SUPPRESSING METHOD 有权
    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。

    Image forming apparatus and image forming method
    9.
    发明授权
    Image forming apparatus and image forming method 有权

    公开(公告)号：US10324397B2

    公开(公告)日：2019-06-18

    申请号：US15203081

    申请日：2016-07-06

    申请人： Muneaki Iwata ,  Masaaki Ishida ,  Atsufumi Omori ,  Hayato Fujita ,  Takefumi Takizawa

    发明人： Muneaki Iwata ,  Masaaki Ishida ,  Atsufumi Omori ,  Hayato Fujita ,  Takefumi Takizawa

    IPC分类号： G03G15/00 ,  G03G15/043

    摘要： An image forming apparatus includes a photoconductor drum, a latent-image forming device, a developing device, a density detecting device, and a processing device. The density detecting device is configured to detect densities at a plurality of positions in a main-scanning direction on a developed image. The processing device is configured to acquire at least two light-amount correction tables respectively associated with at least two positions of the plurality of positions in the main-scanning direction on the developed image, the light-amount correction tables being for reducing density variations in a sub-scanning direction at the at least two positions, and correct, for each scan, a set point for setting an amount of light of a light source based on a difference in corresponding correction data between two light-amount correction tables respectively associated with two adjacent positions of the at least two light-amount correction tables.

    Method and apparatus for forming images, and method for producing printed products
    10.
    发明授权
    Method and apparatus for forming images, and method for producing printed products 有权
    用于形成图像的方法和装置以及用于制造印刷品的方法

    公开(公告)号：US08982422B2

    公开(公告)日：2015-03-17

    申请号：US14269332

    申请日：2014-05-05

    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： H04N1/407 ,  G03G15/04

    CPC分类号： G03G15/04027 ,  H04N1/40037 ,  H04N1/4058 ,  H04N1/4092

    摘要： An image forming apparatus for forming an image in accordance with light to be emitted from a light source includes: a digital half-toning unit configured to convert a uniform-pixel-value region of image data to a parallel-line pattern formed with a plurality of parallel lines extending obliquely with respect to a direction, in which pixels are arrayed, thereby expressing each gray level of the image data as an area percentage; a modulated-signal generating unit configured to generate a modulated signal by modulating the converted image data with a clock signal; a light-source driving unit configured to drive the light source according to the modulated signal; and an edge control unit configured to narrow a to-be-illuminated region, which is to be illuminated by the light from the light source, in each of edge neighborhoods of the lines constituting the parallel-line pattern, while increasing intensity of the light.

    摘要翻译： 根据从光源发出的光形成图像的图像形成装置包括：数字半色调单元，被配置为将图像数据的均匀像素值区域转换为形成有多个的平行线图案 相对于其中排列像素的方向倾斜地延伸的平行线，从而将图像数据的每个灰度级表示为面积百分比; 调制信号生成单元，被配置为通过用时钟信号调制转换的图像数据来生成调制信号; 光源驱动单元，被配置为根据调制信号驱动光源; 以及边缘控制单元，被配置为在构成平行线图案的线的每个边缘邻域中缩小要被来自光源的光照明的被照明区域，同时增加光的强度 。