I've been using AutoCad Lite for about 10 years and whatever printer I've used with it I've always had the problem that the drawings I do come out a very light grey colour that is difficult to see.  Does anyone know why this might be and if there is a setting somewhere I can change to get strong black lines?

Thanks for your reply.  I can't find the plot styles section in my menu - is this because I'm using an old version of autocad lite or have I simply not found it?  I have tried changing the pen weights in the pen assignments in the print box but this has made no difference.  Any further advice would be great.