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公开(公告)号：US09787873B2
公开(公告)日：2017-10-10
申请号：US15198421
申请日：2016-06-30
申请人： Hiroyuki Igawa , Hideki Kamaji
发明人： Hiroyuki Igawa , Hideki Kamaji
CPC分类号： H04N1/4056 , G03G15/01 , G03G15/04027 , G06K15/14 , G06K15/1881 , H04N1/4051 , H04N1/409 , H04N1/52 , H04N1/58 , H04N2201/0094
摘要： An image processing apparatus includes: an image determining unit configured to determine a gradation value for each predetermined range in input image data; and a screen generator configured to arrange dot images around a plurality of growth centers in a halftone dot screen to form respective dot blocks if an input area rate indicating a ratio of black to white in dot images at the gradation value is smaller than a value at which an image defect occurs, and form bridges to connect adjacent dot blocks during a smallest gradation number if distances between the adjacent dot blocks decrease to a predetermined value or less along with growth of the dot blocks, to form a void halftone dot image.
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2.发明申请公开(公告)号：US20180239998A1
公开(公告)日：2018-08-23
申请号：US15896542
申请日：2018-02-14
申请人： Hiroyuki Igawa , Hideki Kamaji
发明人： Hiroyuki Igawa , Hideki Kamaji
CPC分类号： G06K15/1877 , G06K15/107 , G06K15/1822 , G06K15/1881 , G06K2215/111 , H04N1/1915 , H04N1/4051 , H04N1/4055 , H04N1/52
摘要： An image processing apparatus includes a storage and processing circuitry. The storage is configured to store a dither table in which a plurality of dither patterns are recorded, each of the dither patterns being formed with a halftone dot screen in which an output area ratio that is a proportion of void halftone dots per unit area corresponds to any one of gradation values of image data. The processing circuitry is configured to read a gradation value for each region in image data input for each toner color, decide a dither pattern to be applied to the read gradation value, read out the decided dither pattern from the dither table, and perform dither processing of applying the read dither pattern to the region in the image data.
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公开(公告)号：US08941901B2
公开(公告)日：2015-01-27
申请号：US14138312
申请日：2013-12-23
申请人： Hiroyuki Igawa , Hideki Kamaji
发明人： Hiroyuki Igawa , Hideki Kamaji
CPC分类号： H04N1/40018 , G03F5/22 , G06K15/1881 , H04N1/4058 , H04N1/52
摘要： An electrophotographic image output device includes an image processor to receive input image data, and a line screen to represent halftone images and have multiple screen angles respectively allocated to different colors including yellow, magenta, and cyan. The line screen satisfies requirements of (A) a predetermined difference is secured between adjacent two of the multiple screen angles; (B) zero is not allocated to any of the multiple screen angles; and (C) among the multiple screen angles determined by the requirements (A) and (B), a screen angle closest to 90 degrees is allocated to yellow among yellow, magenta, and cyan.
摘要翻译： 电子照相图像输出装置包括用于接收输入图像数据的图像处理器和用于表示半色调图像的线屏幕，并且具有分别分配给包括黄色，品红色和青色的不同颜色的多个屏幕角度。 线屏幕满足（A）的要求，在多个屏幕角度的相邻两个之间确保预定的差异; （B）零不分配给多个屏幕角度中的任何一个; 和（C）在由要求（A）和（B）确定的多个屏幕角度中，最接近90度的屏幕角度被分配给黄色，品红色和青色之间的黄色。
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4.发明授权公开(公告)号：US10430699B2
公开(公告)日：2019-10-01
申请号：US15896542
申请日：2018-02-14
申请人： Hiroyuki Igawa , Hideki Kamaji
发明人： Hiroyuki Igawa , Hideki Kamaji
摘要： An image processing apparatus includes a storage and processing circuitry. The storage is configured to store a dither table in which a plurality of dither patterns are recorded, each of the dither patterns being formed with a halftone dot screen in which an output area ratio that is a proportion of void halftone dots per unit area corresponds to any one of gradation values of image data. The processing circuitry is configured to read a gradation value for each region in image data input for each toner color, decide a dither pattern to be applied to the read gradation value, read out the decided dither pattern from the dither table, and perform dither processing of applying the read dither pattern to the region in the image data.
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公开(公告)号：US09706080B2
公开(公告)日：2017-07-11
申请号：US14955990
申请日：2015-12-01
申请人： Hiroyuki Igawa , Hideki Kamaji
发明人： Hiroyuki Igawa , Hideki Kamaji
CPC分类号： H04N1/4051 , G06K15/1881
摘要： An image processing apparatus stores a first dither pattern group that includes dither patterns each corresponding to a gradation value in a first range and formed by line screens in which widths of lines are increased with an increase in the gradation value, a second dither pattern group that includes dither patterns each corresponding to a gradation value in a second range higher than the gradation value in the first range, and formed by void dot screens in which number of dots is increased and void regions surrounded by the dots are decreased with an increase in the gradation value, and a third dither pattern group that includes dither patterns for switching from the line screen to the void dot screen, switching to the void dot screen being completed before a first reference gradation value at which an image defect occurs for received image data is reached.
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6.发明申请公开(公告)号：US20170013171A1
公开(公告)日：2017-01-12
申请号：US15198421
申请日：2016-06-30
申请人： Hiroyuki Igawa , Hideki Kamaji
发明人： Hiroyuki Igawa , Hideki Kamaji
CPC分类号： H04N1/4056 , G03G15/01 , G03G15/04027 , G06K15/14 , G06K15/1881 , H04N1/4051 , H04N1/409 , H04N1/52 , H04N1/58 , H04N2201/0094
摘要： An image processing apparatus includes: an image determining unit configured to determine a gradation value for each predetermined range in input image data; and a screen generator configured to arrange dot images around a plurality of growth centers in a halftone dot screen to form respective dot blocks if an input area rate indicating a ratio of black to white in dot images at the gradation value is smaller than a value at which an image defect occurs, and form bridges to connect adjacent dot blocks during a smallest gradation number if distances between the adjacent dot blocks decrease to a predetermined value or less along with growth of the dot blocks, to form a void halftone dot image.
摘要翻译： 图像处理装置包括：图像确定单元，被配置为确定输入图像数据中的每个预定范围的灰度值; 以及屏幕生成器，被配置为如果在灰度值中指示点图像中的黑色与白色的比例的输入区域率小于所述灰度值的值，则在半色调点屏幕中围绕多个生长中心布置点图像以形成相应的点块 如果相邻点块之间的距离随着点块的增长而减小到预定值或更小，则形成用于在最小灰度数字期间连接相邻点块的桥，以形成空白半色调点图像。
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7.发明授权Image forming apparatus, and method and device for creating dither patterns 有权图像形成装置，以及用于产生抖动图案的方法和装置公开(公告)号：US09503611B2
公开(公告)日：2016-11-22
申请号：US14809953
申请日：2015-07-27
申请人： Hiroyuki Igawa , Hideki Kamaji
发明人： Hiroyuki Igawa , Hideki Kamaji
CPC分类号： H04N1/40 , G06K15/1822 , G06K15/1877 , G06K15/1881 , H04N1/4058
摘要： An aspect of the invention provides an image forming apparatus storing first, second, and third dither pattern groups. The first group contains a plurality of line screens, each associated with one of gray levels in a first range, varying such that as the gray level increases, the line width increases. The second group contains a plurality of void-dot screens, each associated with one of gray levels higher than those in the first range, varying such that as the gray level increases, dots increase to reduce void portions surrounded by the dots. The third group contains, for switching from the line screen to the void-dot screen, a plurality of dither patterns varying such that as the gray level increases from a reference gray level, adjacent lines are connected at joint portions tapered toward tip ends in a manner that a position that gradually advances from the tip ends to basal ends.
摘要翻译： 本发明的一个方面提供一种存储第一，第二和第三抖动图案组的图像形成装置。 第一组包含多个线屏幕，每个线屏幕与第一范围中的灰度级之一相关联，改变为随着灰度级增加，线宽度增加。 第二组包含多个空白点屏幕，每个空白点屏幕与灰度级高于第一范围中的灰度级别之一变化，使得当灰度级增加时，点增加以减少由点包围的空隙部分。 第三组包含用于从线屏幕切换到空白点屏幕的多个抖动图案，其变化使得当灰度级从参考灰度级增加时，相邻线路连接在尖端处的接合部分 方式是从尖端到基端逐渐前进的位置。
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公开(公告)号：US20160155031A1
公开(公告)日：2016-06-02
申请号：US14955990
申请日：2015-12-01
申请人： Hiroyuki Igawa , Hideki Kamaji
发明人： Hiroyuki Igawa , Hideki Kamaji
CPC分类号： H04N1/4051 , G06K15/1881
摘要： An image processing apparatus stores a first dither pattern group that includes dither patterns each corresponding to a gradation value in a first range and formed by line screens in which widths of lines are increased with an increase in the gradation value, a second dither pattern group that includes dither patterns each corresponding to a gradation value in a second range higher than the gradation value in the first range, and formed by void dot screens in which number of dots is increased and void regions surrounded by the dots are decreased with an increase in the gradation value, and a third dither pattern group that includes dither patterns for switching from the line screen to the void dot screen, switching to the void dot screen being completed before a first reference gradation value at which an image defect occurs for received image data is reached.
摘要翻译： 图像处理装置存储第一抖动图案组，该第一抖动图案组包括与第一范围中的灰度值对应的抖动图案，并且通过随着灰度值的增加线宽增加的线条画面形成;第二抖动图案组， 包括各自对应于高于第一范围中的灰度值的第二范围内的灰度值的抖动图案，并且由点数增加的空白点画面和由点包围的空隙区域随着 灰度值和第三抖动图案组，其包括用于从线屏幕切换到空白点屏幕的抖动图案，切换到在接收图像数据发生图像缺陷的第一参考灰度值之前完成的空白点屏幕是 到达。
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公开(公告)号：US4983876A
公开(公告)日：1991-01-08
申请号：US386658
申请日：1989-07-31
申请人： Satoshi Nakamura , Teruo Simizu , Reizo Naruse , Hiroyuki Igawa
发明人： Satoshi Nakamura , Teruo Simizu , Reizo Naruse , Hiroyuki Igawa
CPC分类号： F04B43/046
摘要： A piezoelectric diaphragm pump assembly is disclosed, wherein there is disposed a housing having an inlet port provided with a feed check valve, and an outlet port provided with a discharge check valve, wherein a casing is disposed for accomodating an amplification mechanism, said casing having an L-shape stationary member, to which a plate spring is fixed, a front end portion of the plate spring being fixed with a lever member of the amplification mechanism, which is engaged with an upper portion of a longitudinally effective type piezoelectric actuator, and wherein a diaphragm body coated with a film is disposed, characterized in that a front end portion of the lever member is fixed with a supporting member which is, in turn, fixed with a U-shape supporting member for supporting the diaphragm body, and that the supporting member is connected via a spring to the L-shape stationary member.
摘要翻译： 公开了一种压电隔膜泵组件，其中设置有具有设置有进料止回阀的入口的壳体和设置有排放止回阀的出口，其中设置有用于容纳放大机构的壳体，所述壳体具有 固定板弹簧的L形固定构件，弹簧的前端部分固定有与纵向有效型压电致动器的上部接合的放大机构的杆构件，以及 其特征在于，所述杆构件的前端部固定有支撑构件，所述支撑构件又与用于支撑所述隔膜体的U形支撑构件固定，并且所述支撑构件 支撑构件通过弹簧连接到L形固定构件。
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10.发明授权Image processing method, image processor, and image forming apparatus using same 有权图像处理方法，图像处理器和使用其的图像形成装置公开(公告)号：US08879961B2
公开(公告)日：2014-11-04
申请号：US13628362
申请日：2012-09-27
申请人： Hiroyuki Igawa
发明人： Hiroyuki Igawa
CPC分类号： G03G15/0189 , G03G15/5058
摘要： An image processing method for generating a halftone pattern for forming an image according to input image data includes a step of forming first and second shade patterns to be developed by first and second toners, respectively. The second toner is identical in color to the first toner and different in shade from the first toner, and the second shade pattern is shifted from the first shade pattern.
摘要翻译： 根据输入图像数据产生用于形成图像的半色调图案的图像处理方法包括分别形成由第一和第二调色剂显影的第一和第二阴影图案的步骤。 第二调色剂的颜色与第一调色剂相同，并且与第一调色剂不同，第二调色剂图案从第一色调图案移位。
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