As others have noted, this printer is ridiculously fast. Even when it's hibernating in sleep mode, it only takes about 10 seconds for it to wake up, and start printing.
It's an extremely reliable workhorse- I've printed at least 20-30,000 pages to mine without a single paper jam. All I do is refill it with paper, and the occasional printer cartridge.
Only downside- no duplexing on this particular model. I have to take the paper out, reverse it, rotate it, then put it back in.Get more detail about HP LaserJet 4250 Monochrome Printer.