Problem with text and some graphics

Hello all.

I have just started altering some drawings I have been given for a job. Trialing Draftsight, but certainly going to purchase this week as I like what I see so far. I am still however, a learner.

We tried to print the DWG drawings on A1 and some of the text and graphics (part of the original drawing) and they come out blurred and the text is so thick, its unreadable.

Look fine on the PC. Any ideas? I read something about the Z value, but that appears to be zero (unless I am reading the wrong value).

Any help would be great. Many thanks