Problems with a test print

When test printing one of my final double page spreads, I had checked to print the 'Non-printing objects' and for this reason when the printed page came out, it had the lines of my columns on the page, which I obviously didn't want.

As these photographs show, the printed out B&W version of my double page spreads contains lines down the faces of the people in my photos, which are very distracting, and not what I intended for.

I have been able to remove these lines by unchecking the box which prints the columns and guides onto the page. This is a hurdle i've overcome in the printing process.