Pentax PocketJet 3 printer

This mobile printer works with regular-size pages so that you can whip out a presentation in a snap during business trips. But the paper is expensive and needs to be hand-fed, so don't rely on this for everyday printing.

Small and easily portable; decent text quality; no inks to refill or to spill during travel; wireless infrared printing; battery and case included.

Many small pieces to carry around; prints on expensive thermal paper; no paper feeder for letter-size sheets; case doesn't hold AC adapter.

The PocketJet 3 is pricey and prints only on special paper, but it's more convenient than a portable inkjet if you need to print black text in out-of-the-way places.