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    • 61. 发明申请
    • PRINTING APPARATUS AND PRINTING METHOD
    • 印刷装置和印刷方法
    • US20100245470A1
    • 2010-09-30
    • US12732764
    • 2010-03-26
    • Yoshiaki MurayamaYuji KonnoHitoshi NishikoriNorihiro KawatokoYutaka Kano
    • Yoshiaki MurayamaYuji KonnoHitoshi NishikoriNorihiro KawatokoYutaka Kano
    • B41J23/00
    • B41J2/2132G06K15/107
    • To provide a printing apparatus and a printing method capable of not permitting a printable ratio of each printing scan to have a deviation and, even if a sudden conveyance shift occurs, outputting a uniform and smooth image in the whole area of the print medium. In order to achieve this, when performing multipass printing of 2M passes, a mask such that a printable area overlapping ratio that relates to straddling between Pass M and Pass M+1 is set higher than the printable area overlapping ratio that relates to straddling between other two consecutive passes is used. By this configuration, even if a complementary relationship of dots collapses due to a sudden conveyance shift etc. and thereby a density reduction is anticipated, by an overlapped dot being separated, increase of the density is accelerated, and it becomes possible to mitigate the above-mentioned density reduction.
    • 为了提供能够不允许每个打印扫描的可打印比率具有偏差的打印装置和打印方法,并且即使发生突然的输送偏移,在打印介质的整个区域中输出均匀且平滑的图像。 为了实现这一点,当进行2M遍的多次打印时,将与通过M和通过M + 1之间的跨越相关的可打印区域重叠比设置为高于与其他跨度相关的可打印区域重叠比的掩码 使用两个连续通行证。 通过这种结构,即使由于突然的输送偏移等导致的点的互补关系崩溃,从而预期密度降低,通过重叠的点被分离,加速了密度的增加,并且可以减轻上述 所述密度降低。
    • 70. 发明授权
    • Printing method and printing apparatus
    • 印刷方法和印刷装置
    • US06364446B1
    • 2002-04-02
    • US09588177
    • 2000-06-07
    • Hisashi IshikawaHiroshi TajikaYuji KonnoHiroo InoueNorihiro KawatokoTetsuya EdamuraTetsuhiro Maeda
    • Hisashi IshikawaHiroshi TajikaYuji KonnoHiroo InoueNorihiro KawatokoTetsuya EdamuraTetsuhiro Maeda
    • B41J2205
    • G06K15/107H04N1/4015
    • A printing method capable of printing a high-quality image at a high speed and low cost and a corresponding printing apparatus are disclosed. In this printing apparatus, a shading-corrected mask pattern for multipass printing control in consideration of the characteristics of each printing element of a printhead is generated. The size of the mask pattern in the conveyance direction of the printing medium is set to be an integer multiple of the conveyance amount of the printing medium per scanning of the printhead. Image data masked using the mask pattern is transferred to the printhead and printed. Alternatively, the conveyance-direction size of the mask pattern for masking print data in accordance with each pass printing of multipass printing is set to be equivalent to the number of nozzles of an ink-jet printhead having a plurality of nozzles arrayed in the conveyance direction of the printing medium, and the mask pattern is dividedly used for each pass printing. Any error of the position of a dot printed on the printing medium by an ink droplet discharged from each nozzle is detected in units of nozzles. Printing may be performed using a mask pattern generated such that a printing element with a small error is frequently used in accordance with the detection result, or performed such that the positions of print data are exchanged.
    • 公开了能够以高速低成本打印高质量图像的打印方法和相应的打印装置。 在该打印装置中,生成考虑到打印头的每个打印元件的特性的用于多次打印控制的阴影校正的掩模图案。 将打印介质的输送方向上的掩模图案的尺寸设定为打印头每次打印的打印介质的输送量的整数倍。 使用掩模图案掩蔽的图像数据被传送到打印头并打印。 或者,根据多次打印的每次通过打印将用于掩蔽打印数据的掩模图案的输送方向尺寸设定为等于具有在输送方向排列的多个喷嘴的喷墨打印头的喷嘴数 的印刷介质,并且掩模图案被分割地用于每个通过印刷。 以喷嘴为单位检测由从每个喷嘴排出的墨滴印刷在打印介质上的点的位置的错误。 可以使用生成的掩模图案来执行打印,使得根据检测结果经常使用具有小错误的打印元件,或者执行以使得打印数据的位置被更换。