The Benefit of setting your black type to overprint
When setting up any type of print ready document, if you are placing black type over an image or any color background, be sure that it is set to “overprint” and not “knock out” from the background. The reason for this is simple. Type, by its nature is quite narrow and fine, so if your printing is even slightly out of register, you will notice a hideous white halo around it. See “”Figure A”.