Technology: Prints in Just a Snap

New machines make it fast and easy to produce great pictures at home

One of the biggest problems with home photo printers is that the results have too much of a sketchy, do-it-yourself quality. Now, printing digital pictures at home just got more appealing, thanks to two new compact photo printers, from Olympus and Sony. Both hook up directly to a digital camera, eliminating the fuss of connecting to a PC. They use a printing process called dye sublimation, which heats the ink and vaporizes it into the photo paper. The result: glossy, 4-in.-by-6-in. prints that are virtually indistinguishable from the ones you get from a professional photo lab. Even better, both devices sell...