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    • 2. 发明专利
    • Method for forming printing image to rotary three-dimensional body
    • 将图像打印到旋转三维体的方法
    • JP2014136217A
    • 2014-07-28
    • JP2014007203
    • 2014-01-17
    • Heiderberger Druckmaschinen Agハイデルベルガー ドルツクマシーネン アクチエンゲゼルシヤフトHeidelberger Druckmaschinen AG
    • JOERG-ACHIM FISCHER
    • B05D1/26G01B11/00
    • B41J29/393B41J3/4073B41J11/0095B41M5/0088
    • PROBLEM TO BE SOLVED: To print a printing image on a rotary three-dimensional body in desired printing resolution, even when a web speed of a surface section to be printed facing to a printing unit changes.SOLUTION: A method for forming a printing image on a rotary three-dimensional body, is provided with an inkjet printing unit for printing by a predetermined printing clock, the rotary three-dimensional body and a motor for driving rotation of the rotary three-dimensional body, and a basic frequency f(t) for driving the motor is set, and the motor is driven by the basic frequency f(t), and an average diameter Rof the rotary three-dimensional body is set. When rotating the rotary three-dimensional body, a diameter variation ΔR(t) of the rotary three-dimensional body is determined, and a correction value k(t) to the printing clock of the inkjet printing unit is calculated by k(t)=1+ΔR(t)/R, and the inkjet printing unit is driven by a frequency f(t) to the printing clock, that is, f(t)=f(t)×k(t).
    • 要解决的问题:即使当要打印的表面部分的卷筒纸速度面向打印单元的纸幅速度改变时,以期望的打印分辨率将打印图像打印在旋转三维体上。解决方案:一种形成打印图像的方法 在旋转三维体上设置有用于通过预定的打印时钟进行打印的喷墨打印单元,旋转三维体和用于驱动旋转三维体的旋转的马达和基本频率f(t ),并且以基本频率f(t)驱动电动机,设定旋转三维体的平均直径Rof。 当旋转三维体旋转时,确定旋转三维体的直径变化量(Dgr; R(t)),并且通过k(t)计算与喷墨打印单元的打印时钟的校正值k(t) t)= 1 +&Dgr; R(t)/ R,并且喷墨打印单元由打印时钟的频率f(t)驱动,即f(t)= f(t)×k(t) 。