Likewise I worked at a company whose business revolved around mail processing and high-speed paper handling. The problems caused by an ink that can dry fast eno

Likewise I worked at a company whose business revolved around mail processing and high-speed paper handling. The problems caused by an ink that can dry fast enough to not smear when you're printing 200 pieces/minute drove a ridiculous amount of software design. OTOH, it was some of the most fun I've had at work.