the stage of publishing where trial impressions made from composed type, or print-outs (from a laser printer, etc) are read for the correction of errors
Examples of 'proof stage' in a sentence
proof stage
I only ever got to read her novels when they were in the final proof stage, as she did not want to hear my opinion.
Times, Sunday Times (2016)
Inevitably, this way of working put pressure on the proof stage as a further creative effort.