printing halftones
Hi there!
I recently started printing halftone images on a Korrex Hannover proof press, I even tried some 120lpi images and the turn out as far as details go is always quite impressive (usually I use thicker halftones 36-90 lpi).
But somehow the ink never is as black as when I print other images or type where the ink is pure black.
It happens even using the same ink and same printing configuration (type/rollers height, papers, polimer plates…)
Maybe someone out there has experienced the same and can share their experiences and shed some light on this problem.
thanx :)
In my experience, halftones take much more pressure than type. Try that
Are you looking at the ink coverage under a magnifying glass? Remember that the whole principle of halftones is that you can achieve a full range of tones from black to white, using black ink. If your ink density in the deep shadows of the halftones is grey (not a blend of black dots and white paper) then you may need a denser black ink. But I suspect you are comparing the overall tone of the halftone with the solids of type or line cuts — not a valid comparison.
Bob
Thank you very much @danielheff I really don’t think it has that much to do with the pressure, at least increasing the pressure didn’t help.
@AdLibPress I’m aware of the whole principle of halftones, and I know that a dot should be 100% black, maybe wasn’t that god elaborated… thanks!
@typenut emailed me recommending to double roll the polymer for a more intense colour, and that’s what I did, the result was more than satisfactory, so that’s what I would suggest!