In ~1990, I was working on Xerox high volume printers that cost $100K-$1M each (AT&T bought fleets of them to print phone bills). They printed at 50-135 pages per minute on ordinary paper (not card stock). Many types of engineers worked on those printers, but I was always fascinated by the aerodynamics engineers working on the paper path, sometimes meters long, through the printer. Early prototypes of those machines would constantly have horrific paper jams because the aerodynamics weren't tuned well enough yet. Some of these jams did significant damage to internal parts.
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In ~1990, I was working on Xerox high volume printers that cost $100K-$1M each (AT&T bought fleets of them to print phone bills). They printed at 50-135 pages per minute on ordinary paper (not card stock). Many types of engineers worked on those printers, but I was always fascinated by the aerodynamics engineers working on the paper path, sometimes meters long, through the printer. Early prototypes of those machines would constantly have horrific paper jams because the aerodynamics weren't tuned well enough yet. Some of these jams did significant damage to internal parts.