It would not be wrong to suggest that photocopy machine does not consume similar kind of ink as used by printers. The printers would often be using powder based ink for printing documents. It has been relatively cheaper and could produce several copies than its equivalent in ink cartridges.
While the effort of creating an additional copy of a few pages might not be worth the trip from the working cubicle to the office photocopier, creating huge quantities of duplicates on the photocopy machine would help you save money. However, it would be in your best interest to make the most of the best in business photocopy machine available online.