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公开(公告)号：US09211749B1
公开(公告)日：2015-12-15
申请号：US14656001
申请日：2015-03-12
发明人： Daisuke Fujiwara
IPC分类号： B41J29/393 , B41J29/38
CPC分类号： B41J29/393 , B41J2/2054 , B41J13/0027 , B41J29/38
摘要： An ink jet printing apparatus calculates the distribution of ink droplet numbers for every page and every color component when printing target image data is generated, determines whether or not pixel numbers corresponding to the ink droplet numbers are 0 in all color components and all pages in order of a greater ink droplet number from a maximum ink droplet number, based on the distribution of the calculated ink droplet numbers of all the pages, and determines, as a new maximum ink droplet number, a greatest ink droplet number among ink droplet numbers which are ink droplet numbers equal to or smaller than the maximum ink droplet number and of which pixel numbers are not 0, based on a determination result.
摘要翻译： 喷墨打印设备计算当产生打印目标图像数据时每页和每个颜色分量的墨滴数的分布，在所有颜色分量和所有页中按顺序确定与墨滴数对应的像素数是否为0 基于所计算的所有页面的墨滴数量的分布，从最大墨滴数量获得更大的墨滴数，并且将作为新的最大墨滴数确定为墨滴数之间的最大墨滴数 基于确定结果，墨滴数等于或小于最大墨滴数，并且其像素数不为0。
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公开(公告)号：US10000068B2
公开(公告)日：2018-06-19
申请号：US15618342
申请日：2017-06-09
发明人： Daisuke Fujiwara
IPC分类号： B41J2/21 , B41J2/045 , B41J29/393
CPC分类号： B41J2/2132 , B41J2/04593 , B41J2/2054 , B41J2/2103 , B41J2/2146 , B41J29/393
摘要： A controller changes a droplet number larger than a second maximum droplet number among droplet numbers in first droplet data for each ink color to the second maximum droplet number. The controller, for each of certain pixels with a droplet number of black decreased to the second maximum droplet number, performs at least one of a first processing or a second processing. The first processing includes distributing a droplet number subtracted to decrease the droplet number of black to pixels surrounding the certain pixel in the first droplet data for black. The second processing includes adding the subtracted droplet number to a droplet number for the certain pixel in the first droplet data for a color other than black.
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公开(公告)号：US09900466B2
公开(公告)日：2018-02-20
申请号：US15437163
申请日：2017-02-20
发明人： Daisuke Fujiwara , Yukio Yoshikawa
CPC分类号： H04N1/4053 , G06K15/021 , G06K15/028 , G06K15/1836 , G06K15/1847 , G06K2215/0042 , G06K2215/0097 , H04N1/4052 , H04N2201/0082
摘要： An image processing apparatus includes an image processor that performs error diffusion processing by applying an error diffusion matrix to multi-valued image data having pixels two-dimensionally arranged, so as to convert the multi-valued image data into binary image data. The binarization unit applies an error diffusion matrix in which the diffusion coefficient of a pixel diagonal to a focused-on pixel is greater than those of other pixels.
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