Re: Raster Blaster
Danny,
A couple things to look at. Ask your plate supplier what the 50% should read when the exposure is set up properly? Depending on plate it could be 50% or it could be 43% or whatever they recommend.
Once you establish you exposure is correct, which it may be, you then need to establish a process calibration curve. I do not know what this is called on EVO. Output a set of plates with a test scale, 2%, 5%, 10%,20,%, 30%, etc up the scale. Make all four colors separately so you can read each and also have CMY so you can see gray balance. You may have a test form you can use from Kodak or GATF offers some or you can make your own.
Have this printed paying particular attention it is printed with the proper end density for your house standard. Once this is done and you read it, you will either have the dot gain you desire or you will not. The way you are setup now with no curve, the odds are you will not.If not, then you will need to program it in EVO, the curve has to be generated in the rip, not the shooter. Output again and print again. You may be OK or you may need to tweak. hope this helps, if not, I would recommend you get your plate supplier/manufacturer along with CtP and workflow vendors on site to help. Hopefully it is one vendor, one phone call.
Regards,
Mark Tonkovich
Heidelberg USA
Product Manager, CtP & Proofing