Hi
the vector is a 4 colour black as if you converted it from a RGB to CMYK.
C: 69.76
M: 67.52
Y: 63.86
K: 73.96
Your printer will not be able to make a single solid plate from it as the strongest ink is still halftone screen at 73.96.
Easily fixed though. Bring it back into Illustrator and select the objects, bring up the colour sliders and set all to 100% black. Save. Job done.
hth
capt.
