I frequently provide artwork for print on large format digital printers -
When I use ILLUSTRATOR ( CMYK 0 0 0 100 ) blacks print out great, the black on screen also looks like a rich black. ( eps, or pdf for print files )
When i use PHOTOSHOP , the same color ( cmyk 0 0 0 100 ) the on screen black looks gray, and also prints gray. ( I usually use PDF from photoshop for print file )
What do I need to know to resolve this issue?