If the paper jams or tears, operators make repairs quickly. They also keep the paper feeders full. During the run, operators periodically pull printed sheets to check their quality. Many press operators perform maintenance on their machines between jobs. They oil and clean the presses as well as make minor repairs.
Duties also vary by the size of the print shop.
In small shops, operators generally use small presses. These presses print one or two colors at a time and are operated by one person. In larger print shops with larger presses, several press operators and assistants may work together. These presses print several colors at once as well as trim and fold the page. Many printing shops are adding computer-controlled presses.