Illustrator Tutorial: How to Prepare a Vector File for Print.
Illustrator provides us with a wide range of drawing opportunities, but the more complex the applied effects are, the greater the risk of having a problem when printing is. To avoid this, you need to follow a few simple rules for creating and saving vector files that you are planning to print.
In this Illustrator tutorial we will not go into the smallest details such as color profiles and printing using five colors. Our task is simply to learn how to decide in what way to save the image, depending on the drawing technique. [link]