I've noticed over my ~20 year history in computing that (certainly home-market) printers are getting slower and slower to turn on as technology 'progresses' – by which I mean that they take longer and longer to do perform all kinds of miscellaneous grinding noises of dubious benefit as part of the startup procedure before they are ready to accept a job. I'm thinking here primary of inkjets, although lasers may be guilty too. For example, my OfficeJet 8500 sometimes takes > 1 minute to start.
What kinds of things is my printer doing when I turn it on that cause whirring, grinding, and grunting, and does it really need to do them? Am I right that more "sophisticated" printers seem to take longer to do this?