When I plot to pdf, Model blacks appear grey, but Paper Space blacks stay black

[Anonymous]

In the plot preview, all the blacks look fine, but as soon as I hit print, the resulting Adobe PDF or the resulting color print takes all the black text and lines from Model space and makes them a weak grey color that is nearly impossible to see.  However, the black text and lines that I added in Paper Space stay true black.  How can I fix this?  Thank you very much for your help in advance.

[pendean]

Using different plot style tables in each of your tabs? Post a DWG with this issue, let's all have a look.