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What is a press run, and what does it entail?
Prepress is finally complete. Proofs have been approved, imposition and pagination have been done, and the printing plates have been manufactured. Now it’s time for the next step: the press run. Here, sheets of paper are fed through the press while the plates transfer ink from the rollers to rubber cylinders, and then to the paper itself. This two-step process is why this printing process is called “offset.”
Most offset printing presses function similarly, but the quality of the final product depends on a number of factors – perhaps most importantly, a certified team of press operators and quality control specialists. That’s why we make sure you’re aware of the quality assurance steps our vendors take: there are many quality control checkpoints throughout the entire process, from file and production prepress to printing and binding. Perhaps the most vital is checking parent sheets as they’re coming off of the press. Press operators will randomly cross-reference printed sheets with a previously printed proof to confirm color accuracy, making sure that quality stays high throughout the entire print run and that the colors and registration aren’t drifting away from where they need to be as the run progresses.