There are three method for dither processing: Net graphic、Dot graphic、Black and white
Net graphic
Net graphic need adjust net size，better suited to material which is not high resolution，or the laser
is relatively slow to respond.
To get the appropriate net size, you can adjust resolution and net frequency of the image.
The higher resolution, the more delicate.
The higher net frequency,the smaller net size.The lower net frequency, the bigger net size.
Generally, resolution of image is 500 - 1000, and net frequency is 30-40lines.
Dot graphic
Dot graphic performance of good gray scale，better suited to material which is high resolution, and
the laser responds fast.
Black and white
In most cases, the effects of color image into black and white image is poor,，however, for some
clear outline image, is very easy to use.
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