I'm having a book printed via one of the printing-on-demand publishers, and the cover is black and white Line Art.
Problem is, the line art quality looks "jagged" on their proofs and I can't figure out why.
The original line art was scanned at 1200 dpi. The first tiff file I sent them was at 300 dpi (per their requested specs). They then convert it to a pdf. When it came out "jagged" they requested a higher res tiff. I sent them 600 dpi. Same result. Then I sent them 1200 dpi file. Same thing happened.
Then I just made my own pdf from the tiff using Distiller and sent them that. Same result.
When I print out the tiff file on my laser printer, it looks perfect. When I print out the Distilled pdf version, it looks less sharp (half-toney) but doesn't have the jagged line art.
wtf? Anything I can do different, or tell them to change, to take care of this?