I recently tried again to resolve this issue on the plotting newsgroup, but now I am pretty sure it is an issue related to the drawing itself, and not the printer.
This only happens cccasionally, and only when plotting a layout that contains views with hiding active. The output of all those viewports are printed in a very faint lineweight. The non-hidden views and paperspace itself is plotten fine.
I've also searched here and in the knowledgebase, without finding a solution or acknowledgement as a bug. I've had this problem on two different printers, as well as on two differnt computers. I've also seen others post here wih the problem on other brands of computers and printers.
Joe Dunfee
Joe Dunfee