Everytime I want to print in black and white I choose that option, click ok, then print. The paper still comes out in color. This happens on my work computer and my home computer. I know it is not the printer because I can print word documents and websites in black and white. Only pdf files refuse to print in black and white. I have 200 pages I need to print for work that does not have to be in color and I don't want to waste my ink. Does anyone know what I can do to fix this problem? Thanks.