公开(公告)号：US20100045731A1

公开(公告)日：2010-02-25

申请号：US12312458

申请日：2007-11-12

申请人： Joon-Hyung Kim

发明人： Joon-Hyung Kim

IPC分类号： B41J29/393

CPC分类号： B41J2/04586 ,  B41J2/04561 ,  B41J2/2142

摘要： An apparatus for inspecting droplet discharge characteristics of an ink-jet printer head, subsequently discharging ink droplets, includes a photographing means for operating a digital camera to generate an overlapped droplet image for ink droplets at a photographing point before each subsequently discharged ink droplet hits a target point; a light emitting means for operating a speed light to give light to an ink droplet passing the photographing point after a delay time from an ink droplet discharging time point; and a droplet discharge characteristic inspecting means for calculating a signal-to-noise ratio distribution of each pixel of the overlapped droplet image, calculating an overlap rate of droplet images of each pixel from the signal-to-noise ratio distribution to calculate a center coordinate of droplet images, and quantitatively calculating and outputting deviation to droplet jetting velocity and direction using the center coordinate of droplet image, a droplet jetting coordinate and the delay time.

摘要翻译： 一种用于检查喷墨打印头的液滴喷出特性，随后排出墨滴的装置，包括一个拍摄装置，用于在每个随后排出的墨滴撞击之前在拍摄点处产生用于墨滴的墨滴的重叠液滴图像 目标点 发光装置，用于在从墨滴喷射时间点起的延迟时间之后，对通过拍摄点的墨滴进行光的操作; 以及液滴喷射特性检查装置，用于计算重叠液滴图像的每个像素的信噪比分布，从信噪比分布计算每个像素的液滴图像的重叠率，以计算中心坐标 使用液滴图像的中心坐标，液滴喷射坐标和延迟时间定量计算和输出对液滴喷射速度和方向的偏差。