If you ask users not to print, they will print. Two simple ways to help cut printing cost by 25% as follows:
1. Use Ecofont; contains small holes to save ink/toner. I recommend using it as the default Outlook font since most users tend to print emails.
2. Use PrintWhatYouLike.com for printing websites. Helps eliminate advertisements and images which you don't need printed to cut cost on ink, toner, and paper.
Less ink, toner, and paper also help prolong the printer's maintenance due date which saves your company money in the long run.