Hewlett-Packard Co generated considerable excitement with the launch yesterday of a laser-quality ink-jet printer at under $1,000. The DeskJet is described as smaller than a briefcase, and prints two high-resolution text or graphics pages a minute. The development is regarded as particularly significant for the Cupertino company because almost all the technology in the printer was developed in-house. Dataquest reckons the company could sell 100,000 in the first year, generating perhaps $50m revenue for itself from the one product, which Hewlett is building at its Corvallis, Oregon plant. It is designed for use with MS-DOS micros – but not, yet, Apple’s Macintosh; it is available in the US now.