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    • 3. 发明申请
    • INKJET PRINTING APPARATUS AND INKJET PRINTING METHOD
    • 喷墨打印设备和喷墨打印方法
    • US20120026245A1
    • 2012-02-02
    • US13176098
    • 2011-07-05
    • Takumi Kaneko
    • Takumi Kaneko
    • B41J2/145
    • B41J2/2139
    • In an inkjet printing apparatus, degraded image quality due to ink viscosity increasing is suppressed without forming ink dots unrelated to the print image as in what is called on-sheet preliminary ejection. More specifically, print data is generated for each pass in a multi-pass printing, such that the ratio of dots continuously formed by the same nozzle during the same scan becomes greater in low-duty areas than in high-duty areas. Thus, the lengthening of nozzle nonuse time can be suppressed, even in the case of printing a low-duty area. As a result, it becomes possible to suppress degraded image quality due to ink viscosity increasing.
    • 在喷墨打印设备中,如在所谓的片材预喷射中那样,抑制由于油墨粘度增加而导致的图像质量下降而不形成与打印图像无关的墨点。 更具体地,在多遍打印中针对每次通过产生打印数据,使得在相同扫描期间由相同喷嘴连续形成的点的比率在低占空比方面比在高功率区域中变大。 因此,即使在打印低功率区域的情况下,也可以抑制喷嘴不使用时间的延长。 结果,可以抑制油墨粘度增加引起的图像质量下降。
    • 5. 发明授权
    • Ink jet printing apparatus
    • 喷墨打印设备
    • US07527348B2
    • 2009-05-05
    • US11365624
    • 2006-03-02
    • Masaya UetsukiTakumi KanekoTsutomu AbeNobuyuki Matsumoto
    • Masaya UetsukiTakumi KanekoTsutomu AbeNobuyuki Matsumoto
    • B41J2/165
    • B41J2/16544
    • In an ink jet printing apparatus carrying out printing using a plurality of ejecting portions for respectively ejecting different kinds of inks, a condition for wiping of an ejection face provided with ink ejection openings of the plurality of ejecting portions is appropriately determined and defective ejection due to a wet and dirty ejection face is effectively prevented. A timing of wiping is controlled considering kinds of inks. Specifically, the timing of wiping is determined not simply based on a number of ejections carried out by the plurality of ejecting portions to perform printing, but also a condition of an amount of mist generated in accordance with the kinds of ink.
    • 在使用多个喷射部分进行打印以分别喷射不同种类的油墨的喷墨打印设备中,适当地确定了设置有多个喷射部分的喷墨口的喷射面的擦拭条件,并且由于 有效地防止了湿肮脏的喷射面。 考虑墨水种类来控制擦拭时间。 具体地说,擦拭的时间不是简单地根据由多个喷射部进行的进行打印的喷射次数来决定的,而且是根据油墨的种类生成的雾的状态。