My brief stint in journalism was after hot metal but before full computerisation. We typeset by keyboarding into a machine that produced column-wide printed output. Afterwards, to do layout, 'Cut' was done with a blade, and 'Paste' was literal.
(in this vid, too: 25:32)
Never saw how the actual back-end printing was done, but we did cadge used printing plates from the big paper downtown when we needed thin aluminium sheet for other hacks.
Are 24:32 cordwood modules?
25:13 the days when storage was dangerous if it fell on you (now it's probably riskier that you might choke on it).
It was probably offset printing. The plates were etched metal positives from film negatives. A soft intermediate picks up an even layer of ink from the plate and deposits it on wet paper. The paper is then oven dried. (IIRC, it has been a long time)
https://printedpicture.artgallery.yale.edu/photography-ink-r...