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    • 3. 发明授权
    • Printing apparatus and printhead temperature retaining control method
    • 打印设备和打印头温度保持控制方法
    • US07758153B2
    • 2010-07-20
    • US11970162
    • 2008-01-07
    • Hirokazu TanakaHidehiko KandaAtsushi SakamotoJiro Moriyama
    • Hirokazu TanakaHidehiko KandaAtsushi SakamotoJiro Moriyama
    • B41J2/165
    • B41J29/387
    • The object of this invention is to provide a printing apparatus and printhead temperature retaining control method capable of suppressing power consumption, and reducing degradation in image quality. To achieve the object, a printing apparatus for printing an image on a printing medium by discharging ink, executes the following processes. A first temperature adjustment process is executed to adjust the printhead temperature to a first adjustment temperature during the non-printing period in which preparation for printing the image is executed by discharging ink from the orifices. Additionally, a second temperature adjustment process is executed to adjust the printhead temperature to a second adjustment temperature during a printing period in which the image is printed on the printing medium by discharging ink from the orifices. The process is executed while providing a quiescent period without printhead temperature adjustment between the first and second temperature adjustment processes.
    • 本发明的目的是提供一种能够抑制功耗并降低图像质量降低的打印装置和打印头温度保持控制方法。 为了实现该目的,用于通过排出墨在打印介质上打印图像的打印装置执行以下处理。 执行第一温度调节处理以在非打印期间将打印头温度调节到第一调节温度,其中通过从孔排出墨来执行用于打印图像的准备。 此外,执行第二温度调节处理以在打印期间将打印头温度调节到第二调节温度,在打印期间,通过从孔中排放墨水将图像打印在打印介质上。 在第一和第二温度调节过程之间没有打印头温度调节的同时提供静止时间的同时执行该过程。
    • 7. 发明授权
    • Image printing apparatus and image printing method
    • 图像打印装置和图像打印方法
    • US07548347B2
    • 2009-06-16
    • US10647271
    • 2003-08-26
    • Norihiro KawatokoHidehiko Kanda
    • Norihiro KawatokoHidehiko Kanda
    • G06K15/00H04N1/405
    • H04N1/40043B41J2/205G06K15/107G06K2215/0094
    • This invention has as its object to realize multi-pass print control which requires a short processing time by a simple arrangement. To this end, a printer according to this invention attains multi-grayscale print control by changing the number of dots to be printed on each pixel to overlap each other in multi-pass print control that prints the pixel in a plurality of scans. In this case, index patterns, each of which designates which of scans is to be used to print in accordance with the density level of a pixel, are prepared for respective pixel values. If a plurality of patterns are prepared for each pixel value, a pattern is randomly selected from them. An image is printed in accordance with a print pattern defined by the selected pattern.
    • 本发明的目的是实现通过简单的布置需要短的处理时间的多遍打印控制。 为此,根据本发明的打印机通过在多个扫描中打印像素的多遍打印控制中改变要打印在每个像素上的点数来进行多灰度打印控制。 在这种情况下,针对各个像素值准备各个索引图案,每个索引图案根据像素的浓度级别指定要使用哪个扫描进行打印。 如果为每个像素值准备多个图案,则从它们中随机选择图案。 根据由所选图案定义的打印图案打印图像。