We had new printers in today, they were Xerox machines. They are quiet neat but not particularly useful when printing from AutoCAD. The reason why? Because for some reason AutoCAD and the Xerox drivers do not play nice with each other when printing with transparency.
When printing with transparency checked in the plot dialog the Xerox printers just print a small section of the page, about a 5th. Without that checked all is good.
The reason seems that AutoCAD prints vectors normally but when transparency is checked is prints rastors. For some reason this does not play well with the Xerox.
On this post on the second page are some settings but they are not on my driver version. I will investigate some options and update if I find a solution with the newer drivers.