I was wondering. Recently, I talked with a print house and they confused me. My default black (0,0,0,100) on INDESIGN was not coming out perfectly black when I sent it out as a PDF. I made another black (0,0,0,0) but my print house said not to do that as it is too black and printers will hate you.
Am I doing something wrong when exporting to PDF or how do I set my default black to the right black?